[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
/*******************************************************************************
|
|
|
|
|
* Filename: target_core_pr.c
|
|
|
|
|
*
|
|
|
|
|
* This file contains SPC-3 compliant persistent reservations and
|
|
|
|
|
* legacy SPC-2 reservations with compatible reservation handling (CRH=1)
|
|
|
|
|
*
|
2012-11-09 22:51:48 +00:00
|
|
|
|
* (c) Copyright 2009-2012 RisingTide Systems LLC.
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
*
|
|
|
|
|
* Nicholas A. Bellinger <nab@kernel.org>
|
|
|
|
|
*
|
|
|
|
|
* This program is free software; you can redistribute it and/or modify
|
|
|
|
|
* it under the terms of the GNU General Public License as published by
|
|
|
|
|
* the Free Software Foundation; either version 2 of the License, or
|
|
|
|
|
* (at your option) any later version.
|
|
|
|
|
*
|
|
|
|
|
* This program is distributed in the hope that it will be useful,
|
|
|
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
|
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
|
|
|
* GNU General Public License for more details.
|
|
|
|
|
*
|
|
|
|
|
* You should have received a copy of the GNU General Public License
|
|
|
|
|
* along with this program; if not, write to the Free Software
|
|
|
|
|
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
|
|
|
|
|
*
|
|
|
|
|
******************************************************************************/
|
|
|
|
|
|
|
|
|
|
#include <linux/slab.h>
|
|
|
|
|
#include <linux/spinlock.h>
|
|
|
|
|
#include <linux/list.h>
|
|
|
|
|
#include <scsi/scsi.h>
|
|
|
|
|
#include <scsi/scsi_cmnd.h>
|
|
|
|
|
#include <asm/unaligned.h>
|
|
|
|
|
|
|
|
|
|
#include <target/target_core_base.h>
|
2011-11-16 14:46:48 +00:00
|
|
|
|
#include <target/target_core_backend.h>
|
|
|
|
|
#include <target/target_core_fabric.h>
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
#include <target/target_core_configfs.h>
|
|
|
|
|
|
2011-11-14 17:30:30 +00:00
|
|
|
|
#include "target_core_internal.h"
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
#include "target_core_pr.h"
|
|
|
|
|
#include "target_core_ua.h"
|
|
|
|
|
|
|
|
|
|
/*
|
|
|
|
|
* Used for Specify Initiator Ports Capable Bit (SPEC_I_PT)
|
|
|
|
|
*/
|
|
|
|
|
struct pr_transport_id_holder {
|
|
|
|
|
int dest_local_nexus;
|
|
|
|
|
struct t10_pr_registration *dest_pr_reg;
|
|
|
|
|
struct se_portal_group *dest_tpg;
|
|
|
|
|
struct se_node_acl *dest_node_acl;
|
|
|
|
|
struct se_dev_entry *dest_se_deve;
|
|
|
|
|
struct list_head dest_list;
|
|
|
|
|
};
|
|
|
|
|
|
|
|
|
|
int core_pr_dump_initiator_port(
|
|
|
|
|
struct t10_pr_registration *pr_reg,
|
|
|
|
|
char *buf,
|
|
|
|
|
u32 size)
|
|
|
|
|
{
|
2011-06-08 17:36:43 +00:00
|
|
|
|
if (!pr_reg->isid_present_at_reg)
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
return 0;
|
|
|
|
|
|
|
|
|
|
snprintf(buf, size, ",i,0x%s", &pr_reg->pr_reg_isid[0]);
|
|
|
|
|
return 1;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
static void __core_scsi3_complete_pro_release(struct se_device *, struct se_node_acl *,
|
|
|
|
|
struct t10_pr_registration *, int);
|
|
|
|
|
|
2012-11-06 20:24:09 +00:00
|
|
|
|
static sense_reason_t
|
|
|
|
|
target_scsi2_reservation_check(struct se_cmd *cmd)
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
{
|
2012-10-10 21:37:15 +00:00
|
|
|
|
struct se_device *dev = cmd->se_dev;
|
|
|
|
|
struct se_session *sess = cmd->se_sess;
|
|
|
|
|
|
|
|
|
|
switch (cmd->t_task_cdb[0]) {
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
case INQUIRY:
|
|
|
|
|
case RELEASE:
|
|
|
|
|
case RELEASE_10:
|
|
|
|
|
return 0;
|
|
|
|
|
default:
|
2012-10-10 21:37:15 +00:00
|
|
|
|
break;
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
}
|
|
|
|
|
|
2012-10-10 21:37:15 +00:00
|
|
|
|
if (!dev->dev_reserved_node_acl || !sess)
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
return 0;
|
|
|
|
|
|
2012-10-10 21:37:15 +00:00
|
|
|
|
if (dev->dev_reserved_node_acl != sess->se_node_acl)
|
2012-11-06 20:24:09 +00:00
|
|
|
|
return TCM_RESERVATION_CONFLICT;
|
2012-10-10 21:37:15 +00:00
|
|
|
|
|
|
|
|
|
if (dev->dev_reservation_flags & DRF_SPC2_RESERVATIONS_WITH_ISID) {
|
|
|
|
|
if (dev->dev_res_bin_isid != sess->sess_bin_isid)
|
2012-11-06 20:24:09 +00:00
|
|
|
|
return TCM_RESERVATION_CONFLICT;
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
}
|
|
|
|
|
|
2012-10-10 21:37:15 +00:00
|
|
|
|
return 0;
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
}
|
|
|
|
|
|
2011-11-03 21:50:40 +00:00
|
|
|
|
static struct t10_pr_registration *core_scsi3_locate_pr_reg(struct se_device *,
|
|
|
|
|
struct se_node_acl *, struct se_session *);
|
|
|
|
|
static void core_scsi3_put_pr_reg(struct t10_pr_registration *);
|
|
|
|
|
|
2012-03-14 04:29:06 +00:00
|
|
|
|
static int target_check_scsi2_reservation_conflict(struct se_cmd *cmd)
|
2011-11-03 21:50:40 +00:00
|
|
|
|
{
|
|
|
|
|
struct se_session *se_sess = cmd->se_sess;
|
2012-10-08 04:03:19 +00:00
|
|
|
|
struct se_device *dev = cmd->se_dev;
|
2011-11-03 21:50:40 +00:00
|
|
|
|
struct t10_pr_registration *pr_reg;
|
2012-10-08 04:03:19 +00:00
|
|
|
|
struct t10_reservation *pr_tmpl = &dev->t10_pr;
|
2011-11-03 21:50:40 +00:00
|
|
|
|
int conflict = 0;
|
|
|
|
|
|
|
|
|
|
pr_reg = core_scsi3_locate_pr_reg(cmd->se_dev, se_sess->se_node_acl,
|
|
|
|
|
se_sess);
|
|
|
|
|
if (pr_reg) {
|
|
|
|
|
/*
|
|
|
|
|
* From spc4r17 5.7.3 Exceptions to SPC-2 RESERVE and RELEASE
|
|
|
|
|
* behavior
|
|
|
|
|
*
|
|
|
|
|
* A RESERVE(6) or RESERVE(10) command shall complete with GOOD
|
|
|
|
|
* status, but no reservation shall be established and the
|
|
|
|
|
* persistent reservation shall not be changed, if the command
|
|
|
|
|
* is received from a) and b) below.
|
|
|
|
|
*
|
|
|
|
|
* A RELEASE(6) or RELEASE(10) command shall complete with GOOD
|
|
|
|
|
* status, but the persistent reservation shall not be released,
|
|
|
|
|
* if the command is received from a) and b)
|
|
|
|
|
*
|
|
|
|
|
* a) An I_T nexus that is a persistent reservation holder; or
|
|
|
|
|
* b) An I_T nexus that is registered if a registrants only or
|
|
|
|
|
* all registrants type persistent reservation is present.
|
|
|
|
|
*
|
|
|
|
|
* In all other cases, a RESERVE(6) command, RESERVE(10) command,
|
|
|
|
|
* RELEASE(6) command, or RELEASE(10) command shall be processed
|
|
|
|
|
* as defined in SPC-2.
|
|
|
|
|
*/
|
|
|
|
|
if (pr_reg->pr_res_holder) {
|
|
|
|
|
core_scsi3_put_pr_reg(pr_reg);
|
2012-03-14 04:29:06 +00:00
|
|
|
|
return 1;
|
2011-11-03 21:50:40 +00:00
|
|
|
|
}
|
|
|
|
|
if ((pr_reg->pr_res_type == PR_TYPE_WRITE_EXCLUSIVE_REGONLY) ||
|
|
|
|
|
(pr_reg->pr_res_type == PR_TYPE_EXCLUSIVE_ACCESS_REGONLY) ||
|
|
|
|
|
(pr_reg->pr_res_type == PR_TYPE_WRITE_EXCLUSIVE_ALLREG) ||
|
|
|
|
|
(pr_reg->pr_res_type == PR_TYPE_EXCLUSIVE_ACCESS_ALLREG)) {
|
|
|
|
|
core_scsi3_put_pr_reg(pr_reg);
|
2012-03-14 04:29:06 +00:00
|
|
|
|
return 1;
|
2011-11-03 21:50:40 +00:00
|
|
|
|
}
|
|
|
|
|
core_scsi3_put_pr_reg(pr_reg);
|
|
|
|
|
conflict = 1;
|
|
|
|
|
} else {
|
|
|
|
|
/*
|
|
|
|
|
* Following spc2r20 5.5.1 Reservations overview:
|
|
|
|
|
*
|
|
|
|
|
* If a logical unit has executed a PERSISTENT RESERVE OUT
|
|
|
|
|
* command with the REGISTER or the REGISTER AND IGNORE
|
|
|
|
|
* EXISTING KEY service action and is still registered by any
|
|
|
|
|
* initiator, all RESERVE commands and all RELEASE commands
|
|
|
|
|
* regardless of initiator shall conflict and shall terminate
|
|
|
|
|
* with a RESERVATION CONFLICT status.
|
|
|
|
|
*/
|
|
|
|
|
spin_lock(&pr_tmpl->registration_lock);
|
|
|
|
|
conflict = (list_empty(&pr_tmpl->registration_list)) ? 0 : 1;
|
|
|
|
|
spin_unlock(&pr_tmpl->registration_lock);
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
if (conflict) {
|
|
|
|
|
pr_err("Received legacy SPC-2 RESERVE/RELEASE"
|
|
|
|
|
" while active SPC-3 registrations exist,"
|
|
|
|
|
" returning RESERVATION_CONFLICT\n");
|
2012-03-14 04:29:06 +00:00
|
|
|
|
return -EBUSY;
|
2011-11-03 21:50:40 +00:00
|
|
|
|
}
|
|
|
|
|
|
2012-03-14 04:29:06 +00:00
|
|
|
|
return 0;
|
2011-11-03 21:50:40 +00:00
|
|
|
|
}
|
|
|
|
|
|
2012-11-06 20:24:09 +00:00
|
|
|
|
sense_reason_t
|
|
|
|
|
target_scsi2_reservation_release(struct se_cmd *cmd)
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
{
|
|
|
|
|
struct se_device *dev = cmd->se_dev;
|
|
|
|
|
struct se_session *sess = cmd->se_sess;
|
2012-09-07 06:56:28 +00:00
|
|
|
|
struct se_portal_group *tpg;
|
2012-11-06 20:24:09 +00:00
|
|
|
|
int rc;
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
|
2012-09-07 06:56:28 +00:00
|
|
|
|
if (!sess || !sess->se_tpg)
|
2011-11-03 21:50:44 +00:00
|
|
|
|
goto out;
|
2012-03-14 04:29:06 +00:00
|
|
|
|
rc = target_check_scsi2_reservation_conflict(cmd);
|
|
|
|
|
if (rc == 1)
|
2011-11-03 21:50:44 +00:00
|
|
|
|
goto out;
|
2012-11-06 20:24:09 +00:00
|
|
|
|
if (rc < 0)
|
|
|
|
|
return TCM_RESERVATION_CONFLICT;
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
|
|
|
|
|
spin_lock(&dev->dev_reservation_lock);
|
2011-11-03 21:50:44 +00:00
|
|
|
|
if (!dev->dev_reserved_node_acl || !sess)
|
|
|
|
|
goto out_unlock;
|
|
|
|
|
|
|
|
|
|
if (dev->dev_reserved_node_acl != sess->se_node_acl)
|
|
|
|
|
goto out_unlock;
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
|
2012-05-13 21:39:37 +00:00
|
|
|
|
if (dev->dev_res_bin_isid != sess->sess_bin_isid)
|
|
|
|
|
goto out_unlock;
|
|
|
|
|
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
dev->dev_reserved_node_acl = NULL;
|
2012-10-08 04:03:19 +00:00
|
|
|
|
dev->dev_reservation_flags &= ~DRF_SPC2_RESERVATIONS;
|
|
|
|
|
if (dev->dev_reservation_flags & DRF_SPC2_RESERVATIONS_WITH_ISID) {
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
dev->dev_res_bin_isid = 0;
|
2012-10-08 04:03:19 +00:00
|
|
|
|
dev->dev_reservation_flags &= ~DRF_SPC2_RESERVATIONS_WITH_ISID;
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
}
|
2012-09-07 06:56:28 +00:00
|
|
|
|
tpg = sess->se_tpg;
|
2011-06-08 17:36:43 +00:00
|
|
|
|
pr_debug("SCSI-2 Released reservation for %s LUN: %u ->"
|
2011-07-19 08:55:10 +00:00
|
|
|
|
" MAPPED LUN: %u for %s\n", tpg->se_tpg_tfo->get_fabric_name(),
|
|
|
|
|
cmd->se_lun->unpacked_lun, cmd->se_deve->mapped_lun,
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
sess->se_node_acl->initiatorname);
|
|
|
|
|
|
2011-11-03 21:50:44 +00:00
|
|
|
|
out_unlock:
|
|
|
|
|
spin_unlock(&dev->dev_reservation_lock);
|
|
|
|
|
out:
|
2012-11-06 20:24:09 +00:00
|
|
|
|
target_complete_cmd(cmd, GOOD);
|
|
|
|
|
return 0;
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
}
|
|
|
|
|
|
2012-11-06 20:24:09 +00:00
|
|
|
|
sense_reason_t
|
|
|
|
|
target_scsi2_reservation_reserve(struct se_cmd *cmd)
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
{
|
|
|
|
|
struct se_device *dev = cmd->se_dev;
|
|
|
|
|
struct se_session *sess = cmd->se_sess;
|
2012-09-07 06:56:28 +00:00
|
|
|
|
struct se_portal_group *tpg;
|
2012-11-06 20:24:09 +00:00
|
|
|
|
sense_reason_t ret = 0;
|
|
|
|
|
int rc;
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
|
2011-05-03 00:12:10 +00:00
|
|
|
|
if ((cmd->t_task_cdb[1] & 0x01) &&
|
|
|
|
|
(cmd->t_task_cdb[1] & 0x02)) {
|
2011-06-08 17:36:43 +00:00
|
|
|
|
pr_err("LongIO and Obselete Bits set, returning"
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
" ILLEGAL_REQUEST\n");
|
2012-11-06 20:24:09 +00:00
|
|
|
|
return TCM_UNSUPPORTED_SCSI_OPCODE;
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
}
|
|
|
|
|
/*
|
|
|
|
|
* This is currently the case for target_core_mod passthrough struct se_cmd
|
|
|
|
|
* ops
|
|
|
|
|
*/
|
2012-09-07 06:56:28 +00:00
|
|
|
|
if (!sess || !sess->se_tpg)
|
2011-11-03 21:50:44 +00:00
|
|
|
|
goto out;
|
2012-03-14 04:29:06 +00:00
|
|
|
|
rc = target_check_scsi2_reservation_conflict(cmd);
|
|
|
|
|
if (rc == 1)
|
2011-11-03 21:50:44 +00:00
|
|
|
|
goto out;
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
|
2012-11-06 20:24:09 +00:00
|
|
|
|
if (rc < 0)
|
|
|
|
|
return TCM_RESERVATION_CONFLICT;
|
|
|
|
|
|
2012-09-07 06:56:28 +00:00
|
|
|
|
tpg = sess->se_tpg;
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
spin_lock(&dev->dev_reservation_lock);
|
|
|
|
|
if (dev->dev_reserved_node_acl &&
|
|
|
|
|
(dev->dev_reserved_node_acl != sess->se_node_acl)) {
|
2011-06-08 17:36:43 +00:00
|
|
|
|
pr_err("SCSI-2 RESERVATION CONFLIFT for %s fabric\n",
|
2011-07-19 08:55:10 +00:00
|
|
|
|
tpg->se_tpg_tfo->get_fabric_name());
|
2011-06-08 17:36:43 +00:00
|
|
|
|
pr_err("Original reserver LUN: %u %s\n",
|
2011-07-19 08:55:10 +00:00
|
|
|
|
cmd->se_lun->unpacked_lun,
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
dev->dev_reserved_node_acl->initiatorname);
|
2011-06-08 17:36:43 +00:00
|
|
|
|
pr_err("Current attempt - LUN: %u -> MAPPED LUN: %u"
|
2011-07-19 08:55:10 +00:00
|
|
|
|
" from %s \n", cmd->se_lun->unpacked_lun,
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
cmd->se_deve->mapped_lun,
|
|
|
|
|
sess->se_node_acl->initiatorname);
|
2012-11-06 20:24:09 +00:00
|
|
|
|
ret = TCM_RESERVATION_CONFLICT;
|
2011-11-03 21:50:44 +00:00
|
|
|
|
goto out_unlock;
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
dev->dev_reserved_node_acl = sess->se_node_acl;
|
2012-10-08 04:03:19 +00:00
|
|
|
|
dev->dev_reservation_flags |= DRF_SPC2_RESERVATIONS;
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
if (sess->sess_bin_isid != 0) {
|
|
|
|
|
dev->dev_res_bin_isid = sess->sess_bin_isid;
|
2012-10-08 04:03:19 +00:00
|
|
|
|
dev->dev_reservation_flags |= DRF_SPC2_RESERVATIONS_WITH_ISID;
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
}
|
2011-06-08 17:36:43 +00:00
|
|
|
|
pr_debug("SCSI-2 Reserved %s LUN: %u -> MAPPED LUN: %u"
|
2011-07-19 08:55:10 +00:00
|
|
|
|
" for %s\n", tpg->se_tpg_tfo->get_fabric_name(),
|
|
|
|
|
cmd->se_lun->unpacked_lun, cmd->se_deve->mapped_lun,
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
sess->se_node_acl->initiatorname);
|
|
|
|
|
|
2011-11-03 21:50:44 +00:00
|
|
|
|
out_unlock:
|
|
|
|
|
spin_unlock(&dev->dev_reservation_lock);
|
|
|
|
|
out:
|
2012-04-23 15:35:33 +00:00
|
|
|
|
if (!ret)
|
|
|
|
|
target_complete_cmd(cmd, GOOD);
|
2011-11-03 21:50:44 +00:00
|
|
|
|
return ret;
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
/*
|
|
|
|
|
* Begin SPC-3/SPC-4 Persistent Reservations emulation support
|
|
|
|
|
*
|
|
|
|
|
* This function is called by those initiator ports who are *NOT*
|
|
|
|
|
* the active PR reservation holder when a reservation is present.
|
|
|
|
|
*/
|
|
|
|
|
static int core_scsi3_pr_seq_non_holder(
|
|
|
|
|
struct se_cmd *cmd,
|
|
|
|
|
u32 pr_reg_type)
|
|
|
|
|
{
|
2012-10-10 21:37:15 +00:00
|
|
|
|
unsigned char *cdb = cmd->t_task_cdb;
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
struct se_dev_entry *se_deve;
|
2011-07-19 08:55:10 +00:00
|
|
|
|
struct se_session *se_sess = cmd->se_sess;
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
int other_cdb = 0, ignore_reg;
|
|
|
|
|
int registered_nexus = 0, ret = 1; /* Conflict by default */
|
|
|
|
|
int all_reg = 0, reg_only = 0; /* ALL_REG, REG_ONLY */
|
|
|
|
|
int we = 0; /* Write Exclusive */
|
|
|
|
|
int legacy = 0; /* Act like a legacy device and return
|
|
|
|
|
* RESERVATION CONFLICT on some CDBs */
|
|
|
|
|
|
2012-03-15 19:05:40 +00:00
|
|
|
|
se_deve = se_sess->se_node_acl->device_list[cmd->orig_fe_lun];
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
/*
|
|
|
|
|
* Determine if the registration should be ignored due to
|
2012-10-10 21:37:15 +00:00
|
|
|
|
* non-matching ISIDs in target_scsi3_pr_reservation_check().
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
*/
|
|
|
|
|
ignore_reg = (pr_reg_type & 0x80000000);
|
|
|
|
|
if (ignore_reg)
|
|
|
|
|
pr_reg_type &= ~0x80000000;
|
|
|
|
|
|
|
|
|
|
switch (pr_reg_type) {
|
|
|
|
|
case PR_TYPE_WRITE_EXCLUSIVE:
|
|
|
|
|
we = 1;
|
|
|
|
|
case PR_TYPE_EXCLUSIVE_ACCESS:
|
|
|
|
|
/*
|
|
|
|
|
* Some commands are only allowed for the persistent reservation
|
|
|
|
|
* holder.
|
|
|
|
|
*/
|
|
|
|
|
if ((se_deve->def_pr_registered) && !(ignore_reg))
|
|
|
|
|
registered_nexus = 1;
|
|
|
|
|
break;
|
|
|
|
|
case PR_TYPE_WRITE_EXCLUSIVE_REGONLY:
|
|
|
|
|
we = 1;
|
|
|
|
|
case PR_TYPE_EXCLUSIVE_ACCESS_REGONLY:
|
|
|
|
|
/*
|
|
|
|
|
* Some commands are only allowed for registered I_T Nexuses.
|
|
|
|
|
*/
|
|
|
|
|
reg_only = 1;
|
|
|
|
|
if ((se_deve->def_pr_registered) && !(ignore_reg))
|
|
|
|
|
registered_nexus = 1;
|
|
|
|
|
break;
|
|
|
|
|
case PR_TYPE_WRITE_EXCLUSIVE_ALLREG:
|
|
|
|
|
we = 1;
|
|
|
|
|
case PR_TYPE_EXCLUSIVE_ACCESS_ALLREG:
|
|
|
|
|
/*
|
|
|
|
|
* Each registered I_T Nexus is a reservation holder.
|
|
|
|
|
*/
|
|
|
|
|
all_reg = 1;
|
|
|
|
|
if ((se_deve->def_pr_registered) && !(ignore_reg))
|
|
|
|
|
registered_nexus = 1;
|
|
|
|
|
break;
|
|
|
|
|
default:
|
2011-07-19 08:55:10 +00:00
|
|
|
|
return -EINVAL;
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
}
|
|
|
|
|
/*
|
|
|
|
|
* Referenced from spc4r17 table 45 for *NON* PR holder access
|
|
|
|
|
*/
|
|
|
|
|
switch (cdb[0]) {
|
|
|
|
|
case SECURITY_PROTOCOL_IN:
|
|
|
|
|
if (registered_nexus)
|
|
|
|
|
return 0;
|
|
|
|
|
ret = (we) ? 0 : 1;
|
|
|
|
|
break;
|
|
|
|
|
case MODE_SENSE:
|
|
|
|
|
case MODE_SENSE_10:
|
|
|
|
|
case READ_ATTRIBUTE:
|
|
|
|
|
case READ_BUFFER:
|
|
|
|
|
case RECEIVE_DIAGNOSTIC:
|
|
|
|
|
if (legacy) {
|
|
|
|
|
ret = 1;
|
|
|
|
|
break;
|
|
|
|
|
}
|
|
|
|
|
if (registered_nexus) {
|
|
|
|
|
ret = 0;
|
|
|
|
|
break;
|
|
|
|
|
}
|
|
|
|
|
ret = (we) ? 0 : 1; /* Allowed Write Exclusive */
|
|
|
|
|
break;
|
|
|
|
|
case PERSISTENT_RESERVE_OUT:
|
|
|
|
|
/*
|
|
|
|
|
* This follows PERSISTENT_RESERVE_OUT service actions that
|
|
|
|
|
* are allowed in the presence of various reservations.
|
|
|
|
|
* See spc4r17, table 46
|
|
|
|
|
*/
|
|
|
|
|
switch (cdb[1] & 0x1f) {
|
|
|
|
|
case PRO_CLEAR:
|
|
|
|
|
case PRO_PREEMPT:
|
|
|
|
|
case PRO_PREEMPT_AND_ABORT:
|
|
|
|
|
ret = (registered_nexus) ? 0 : 1;
|
|
|
|
|
break;
|
|
|
|
|
case PRO_REGISTER:
|
|
|
|
|
case PRO_REGISTER_AND_IGNORE_EXISTING_KEY:
|
|
|
|
|
ret = 0;
|
|
|
|
|
break;
|
|
|
|
|
case PRO_REGISTER_AND_MOVE:
|
|
|
|
|
case PRO_RESERVE:
|
|
|
|
|
ret = 1;
|
|
|
|
|
break;
|
|
|
|
|
case PRO_RELEASE:
|
|
|
|
|
ret = (registered_nexus) ? 0 : 1;
|
|
|
|
|
break;
|
|
|
|
|
default:
|
2011-06-08 17:36:43 +00:00
|
|
|
|
pr_err("Unknown PERSISTENT_RESERVE_OUT service"
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
" action: 0x%02x\n", cdb[1] & 0x1f);
|
2011-07-19 08:55:10 +00:00
|
|
|
|
return -EINVAL;
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
}
|
|
|
|
|
break;
|
|
|
|
|
case RELEASE:
|
|
|
|
|
case RELEASE_10:
|
2011-11-03 21:50:40 +00:00
|
|
|
|
/* Handled by CRH=1 in target_scsi2_reservation_release() */
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
ret = 0;
|
|
|
|
|
break;
|
|
|
|
|
case RESERVE:
|
|
|
|
|
case RESERVE_10:
|
2011-11-03 21:50:40 +00:00
|
|
|
|
/* Handled by CRH=1 in target_scsi2_reservation_reserve() */
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
ret = 0;
|
|
|
|
|
break;
|
|
|
|
|
case TEST_UNIT_READY:
|
|
|
|
|
ret = (legacy) ? 1 : 0; /* Conflict for legacy */
|
|
|
|
|
break;
|
|
|
|
|
case MAINTENANCE_IN:
|
|
|
|
|
switch (cdb[1] & 0x1f) {
|
|
|
|
|
case MI_MANAGEMENT_PROTOCOL_IN:
|
|
|
|
|
if (registered_nexus) {
|
|
|
|
|
ret = 0;
|
|
|
|
|
break;
|
|
|
|
|
}
|
|
|
|
|
ret = (we) ? 0 : 1; /* Allowed Write Exclusive */
|
|
|
|
|
break;
|
|
|
|
|
case MI_REPORT_SUPPORTED_OPERATION_CODES:
|
|
|
|
|
case MI_REPORT_SUPPORTED_TASK_MANAGEMENT_FUNCTIONS:
|
|
|
|
|
if (legacy) {
|
|
|
|
|
ret = 1;
|
|
|
|
|
break;
|
|
|
|
|
}
|
|
|
|
|
if (registered_nexus) {
|
|
|
|
|
ret = 0;
|
|
|
|
|
break;
|
|
|
|
|
}
|
|
|
|
|
ret = (we) ? 0 : 1; /* Allowed Write Exclusive */
|
|
|
|
|
break;
|
|
|
|
|
case MI_REPORT_ALIASES:
|
|
|
|
|
case MI_REPORT_IDENTIFYING_INFORMATION:
|
|
|
|
|
case MI_REPORT_PRIORITY:
|
|
|
|
|
case MI_REPORT_TARGET_PGS:
|
|
|
|
|
case MI_REPORT_TIMESTAMP:
|
|
|
|
|
ret = 0; /* Allowed */
|
|
|
|
|
break;
|
|
|
|
|
default:
|
2011-06-08 17:36:43 +00:00
|
|
|
|
pr_err("Unknown MI Service Action: 0x%02x\n",
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
(cdb[1] & 0x1f));
|
2011-07-19 08:55:10 +00:00
|
|
|
|
return -EINVAL;
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
}
|
|
|
|
|
break;
|
|
|
|
|
case ACCESS_CONTROL_IN:
|
|
|
|
|
case ACCESS_CONTROL_OUT:
|
|
|
|
|
case INQUIRY:
|
|
|
|
|
case LOG_SENSE:
|
|
|
|
|
case READ_MEDIA_SERIAL_NUMBER:
|
|
|
|
|
case REPORT_LUNS:
|
|
|
|
|
case REQUEST_SENSE:
|
2012-01-04 01:12:58 +00:00
|
|
|
|
case PERSISTENT_RESERVE_IN:
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
ret = 0; /*/ Allowed CDBs */
|
|
|
|
|
break;
|
|
|
|
|
default:
|
|
|
|
|
other_cdb = 1;
|
|
|
|
|
break;
|
|
|
|
|
}
|
|
|
|
|
/*
|
2011-03-31 01:57:33 +00:00
|
|
|
|
* Case where the CDB is explicitly allowed in the above switch
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
* statement.
|
|
|
|
|
*/
|
2011-06-08 17:36:43 +00:00
|
|
|
|
if (!ret && !other_cdb) {
|
|
|
|
|
pr_debug("Allowing explict CDB: 0x%02x for %s"
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
" reservation holder\n", cdb[0],
|
|
|
|
|
core_scsi3_pr_dump_type(pr_reg_type));
|
2012-04-03 22:51:12 +00:00
|
|
|
|
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
return ret;
|
|
|
|
|
}
|
|
|
|
|
/*
|
|
|
|
|
* Check if write exclusive initiator ports *NOT* holding the
|
|
|
|
|
* WRITE_EXCLUSIVE_* reservation.
|
|
|
|
|
*/
|
2012-07-13 00:34:54 +00:00
|
|
|
|
if (we && !registered_nexus) {
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
if (cmd->data_direction == DMA_TO_DEVICE) {
|
|
|
|
|
/*
|
|
|
|
|
* Conflict for write exclusive
|
|
|
|
|
*/
|
2011-06-08 17:36:43 +00:00
|
|
|
|
pr_debug("%s Conflict for unregistered nexus"
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
" %s CDB: 0x%02x to %s reservation\n",
|
|
|
|
|
transport_dump_cmd_direction(cmd),
|
|
|
|
|
se_sess->se_node_acl->initiatorname, cdb[0],
|
|
|
|
|
core_scsi3_pr_dump_type(pr_reg_type));
|
|
|
|
|
return 1;
|
|
|
|
|
} else {
|
|
|
|
|
/*
|
|
|
|
|
* Allow non WRITE CDBs for all Write Exclusive
|
|
|
|
|
* PR TYPEs to pass for registered and
|
|
|
|
|
* non-registered_nexuxes NOT holding the reservation.
|
|
|
|
|
*
|
|
|
|
|
* We only make noise for the unregisterd nexuses,
|
|
|
|
|
* as we expect registered non-reservation holding
|
|
|
|
|
* nexuses to issue CDBs.
|
|
|
|
|
*/
|
2012-04-03 22:51:12 +00:00
|
|
|
|
|
2011-06-08 17:36:43 +00:00
|
|
|
|
if (!registered_nexus) {
|
|
|
|
|
pr_debug("Allowing implict CDB: 0x%02x"
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
" for %s reservation on unregistered"
|
|
|
|
|
" nexus\n", cdb[0],
|
|
|
|
|
core_scsi3_pr_dump_type(pr_reg_type));
|
|
|
|
|
}
|
2012-04-03 22:51:12 +00:00
|
|
|
|
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
return 0;
|
|
|
|
|
}
|
|
|
|
|
} else if ((reg_only) || (all_reg)) {
|
|
|
|
|
if (registered_nexus) {
|
|
|
|
|
/*
|
|
|
|
|
* For PR_*_REG_ONLY and PR_*_ALL_REG reservations,
|
|
|
|
|
* allow commands from registered nexuses.
|
|
|
|
|
*/
|
2012-04-03 22:51:12 +00:00
|
|
|
|
|
2011-06-08 17:36:43 +00:00
|
|
|
|
pr_debug("Allowing implict CDB: 0x%02x for %s"
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
" reservation\n", cdb[0],
|
|
|
|
|
core_scsi3_pr_dump_type(pr_reg_type));
|
2012-04-03 22:51:12 +00:00
|
|
|
|
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
return 0;
|
|
|
|
|
}
|
|
|
|
|
}
|
2011-06-08 17:36:43 +00:00
|
|
|
|
pr_debug("%s Conflict for %sregistered nexus %s CDB: 0x%2x"
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
" for %s reservation\n", transport_dump_cmd_direction(cmd),
|
|
|
|
|
(registered_nexus) ? "" : "un",
|
|
|
|
|
se_sess->se_node_acl->initiatorname, cdb[0],
|
|
|
|
|
core_scsi3_pr_dump_type(pr_reg_type));
|
|
|
|
|
|
|
|
|
|
return 1; /* Conflict by default */
|
|
|
|
|
}
|
|
|
|
|
|
2012-11-06 20:24:09 +00:00
|
|
|
|
static sense_reason_t
|
|
|
|
|
target_scsi3_pr_reservation_check(struct se_cmd *cmd)
|
2012-10-10 21:37:15 +00:00
|
|
|
|
{
|
|
|
|
|
struct se_device *dev = cmd->se_dev;
|
|
|
|
|
struct se_session *sess = cmd->se_sess;
|
|
|
|
|
u32 pr_reg_type;
|
|
|
|
|
|
|
|
|
|
if (!dev->dev_pr_res_holder)
|
|
|
|
|
return 0;
|
|
|
|
|
|
|
|
|
|
pr_reg_type = dev->dev_pr_res_holder->pr_res_type;
|
|
|
|
|
cmd->pr_res_key = dev->dev_pr_res_holder->pr_res_key;
|
|
|
|
|
if (dev->dev_pr_res_holder->pr_reg_nacl != sess->se_node_acl)
|
|
|
|
|
goto check_nonholder;
|
|
|
|
|
|
|
|
|
|
if (dev->dev_pr_res_holder->isid_present_at_reg) {
|
|
|
|
|
if (dev->dev_pr_res_holder->pr_reg_bin_isid !=
|
|
|
|
|
sess->sess_bin_isid) {
|
|
|
|
|
pr_reg_type |= 0x80000000;
|
|
|
|
|
goto check_nonholder;
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
return 0;
|
|
|
|
|
|
|
|
|
|
check_nonholder:
|
|
|
|
|
if (core_scsi3_pr_seq_non_holder(cmd, pr_reg_type))
|
2012-11-06 20:24:09 +00:00
|
|
|
|
return TCM_RESERVATION_CONFLICT;
|
2012-10-10 21:37:15 +00:00
|
|
|
|
return 0;
|
|
|
|
|
}
|
|
|
|
|
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
static u32 core_scsi3_pr_generation(struct se_device *dev)
|
|
|
|
|
{
|
|
|
|
|
u32 prg;
|
2012-10-08 04:03:19 +00:00
|
|
|
|
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
/*
|
|
|
|
|
* PRGeneration field shall contain the value of a 32-bit wrapping
|
|
|
|
|
* counter mainted by the device server.
|
|
|
|
|
*
|
|
|
|
|
* Note that this is done regardless of Active Persist across
|
|
|
|
|
* Target PowerLoss (APTPL)
|
|
|
|
|
*
|
|
|
|
|
* See spc4r17 section 6.3.12 READ_KEYS service action
|
|
|
|
|
*/
|
|
|
|
|
spin_lock(&dev->dev_reservation_lock);
|
2012-10-08 04:03:19 +00:00
|
|
|
|
prg = dev->t10_pr.pr_generation++;
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
spin_unlock(&dev->dev_reservation_lock);
|
|
|
|
|
|
|
|
|
|
return prg;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
static struct t10_pr_registration *__core_scsi3_do_alloc_registration(
|
|
|
|
|
struct se_device *dev,
|
|
|
|
|
struct se_node_acl *nacl,
|
|
|
|
|
struct se_dev_entry *deve,
|
|
|
|
|
unsigned char *isid,
|
|
|
|
|
u64 sa_res_key,
|
|
|
|
|
int all_tg_pt,
|
|
|
|
|
int aptpl)
|
|
|
|
|
{
|
|
|
|
|
struct t10_pr_registration *pr_reg;
|
|
|
|
|
|
|
|
|
|
pr_reg = kmem_cache_zalloc(t10_pr_reg_cache, GFP_ATOMIC);
|
2011-06-08 17:36:43 +00:00
|
|
|
|
if (!pr_reg) {
|
|
|
|
|
pr_err("Unable to allocate struct t10_pr_registration\n");
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
return NULL;
|
|
|
|
|
}
|
|
|
|
|
|
2012-10-08 04:03:19 +00:00
|
|
|
|
pr_reg->pr_aptpl_buf = kzalloc(dev->t10_pr.pr_aptpl_buf_len,
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
GFP_ATOMIC);
|
2011-06-08 17:36:43 +00:00
|
|
|
|
if (!pr_reg->pr_aptpl_buf) {
|
|
|
|
|
pr_err("Unable to allocate pr_reg->pr_aptpl_buf\n");
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
kmem_cache_free(t10_pr_reg_cache, pr_reg);
|
|
|
|
|
return NULL;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
INIT_LIST_HEAD(&pr_reg->pr_reg_list);
|
|
|
|
|
INIT_LIST_HEAD(&pr_reg->pr_reg_abort_list);
|
|
|
|
|
INIT_LIST_HEAD(&pr_reg->pr_reg_aptpl_list);
|
|
|
|
|
INIT_LIST_HEAD(&pr_reg->pr_reg_atp_list);
|
|
|
|
|
INIT_LIST_HEAD(&pr_reg->pr_reg_atp_mem_list);
|
|
|
|
|
atomic_set(&pr_reg->pr_res_holders, 0);
|
|
|
|
|
pr_reg->pr_reg_nacl = nacl;
|
|
|
|
|
pr_reg->pr_reg_deve = deve;
|
|
|
|
|
pr_reg->pr_res_mapped_lun = deve->mapped_lun;
|
|
|
|
|
pr_reg->pr_aptpl_target_lun = deve->se_lun->unpacked_lun;
|
|
|
|
|
pr_reg->pr_res_key = sa_res_key;
|
|
|
|
|
pr_reg->pr_reg_all_tg_pt = all_tg_pt;
|
|
|
|
|
pr_reg->pr_reg_aptpl = aptpl;
|
|
|
|
|
pr_reg->pr_reg_tg_pt_lun = deve->se_lun;
|
|
|
|
|
/*
|
|
|
|
|
* If an ISID value for this SCSI Initiator Port exists,
|
|
|
|
|
* save it to the registration now.
|
|
|
|
|
*/
|
|
|
|
|
if (isid != NULL) {
|
|
|
|
|
pr_reg->pr_reg_bin_isid = get_unaligned_be64(isid);
|
|
|
|
|
snprintf(pr_reg->pr_reg_isid, PR_REG_ISID_LEN, "%s", isid);
|
|
|
|
|
pr_reg->isid_present_at_reg = 1;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
return pr_reg;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
static int core_scsi3_lunacl_depend_item(struct se_dev_entry *);
|
|
|
|
|
static void core_scsi3_lunacl_undepend_item(struct se_dev_entry *);
|
|
|
|
|
|
|
|
|
|
/*
|
|
|
|
|
* Function used for handling PR registrations for ALL_TG_PT=1 and ALL_TG_PT=0
|
|
|
|
|
* modes.
|
|
|
|
|
*/
|
|
|
|
|
static struct t10_pr_registration *__core_scsi3_alloc_registration(
|
|
|
|
|
struct se_device *dev,
|
|
|
|
|
struct se_node_acl *nacl,
|
|
|
|
|
struct se_dev_entry *deve,
|
|
|
|
|
unsigned char *isid,
|
|
|
|
|
u64 sa_res_key,
|
|
|
|
|
int all_tg_pt,
|
|
|
|
|
int aptpl)
|
|
|
|
|
{
|
|
|
|
|
struct se_dev_entry *deve_tmp;
|
|
|
|
|
struct se_node_acl *nacl_tmp;
|
|
|
|
|
struct se_port *port, *port_tmp;
|
|
|
|
|
struct target_core_fabric_ops *tfo = nacl->se_tpg->se_tpg_tfo;
|
|
|
|
|
struct t10_pr_registration *pr_reg, *pr_reg_atp, *pr_reg_tmp, *pr_reg_tmp_safe;
|
|
|
|
|
int ret;
|
|
|
|
|
/*
|
|
|
|
|
* Create a registration for the I_T Nexus upon which the
|
|
|
|
|
* PROUT REGISTER was received.
|
|
|
|
|
*/
|
|
|
|
|
pr_reg = __core_scsi3_do_alloc_registration(dev, nacl, deve, isid,
|
|
|
|
|
sa_res_key, all_tg_pt, aptpl);
|
2011-06-08 17:36:43 +00:00
|
|
|
|
if (!pr_reg)
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
return NULL;
|
|
|
|
|
/*
|
|
|
|
|
* Return pointer to pr_reg for ALL_TG_PT=0
|
|
|
|
|
*/
|
2011-06-08 17:36:43 +00:00
|
|
|
|
if (!all_tg_pt)
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
return pr_reg;
|
|
|
|
|
/*
|
|
|
|
|
* Create list of matching SCSI Initiator Port registrations
|
|
|
|
|
* for ALL_TG_PT=1
|
|
|
|
|
*/
|
|
|
|
|
spin_lock(&dev->se_port_lock);
|
|
|
|
|
list_for_each_entry_safe(port, port_tmp, &dev->dev_sep_list, sep_list) {
|
|
|
|
|
atomic_inc(&port->sep_tg_pt_ref_cnt);
|
|
|
|
|
smp_mb__after_atomic_inc();
|
|
|
|
|
spin_unlock(&dev->se_port_lock);
|
|
|
|
|
|
|
|
|
|
spin_lock_bh(&port->sep_alua_lock);
|
|
|
|
|
list_for_each_entry(deve_tmp, &port->sep_alua_list,
|
|
|
|
|
alua_port_list) {
|
|
|
|
|
/*
|
|
|
|
|
* This pointer will be NULL for demo mode MappedLUNs
|
|
|
|
|
* that have not been make explict via a ConfigFS
|
|
|
|
|
* MappedLUN group for the SCSI Initiator Node ACL.
|
|
|
|
|
*/
|
2011-06-08 17:36:43 +00:00
|
|
|
|
if (!deve_tmp->se_lun_acl)
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
continue;
|
|
|
|
|
|
|
|
|
|
nacl_tmp = deve_tmp->se_lun_acl->se_lun_nacl;
|
|
|
|
|
/*
|
|
|
|
|
* Skip the matching struct se_node_acl that is allocated
|
|
|
|
|
* above..
|
|
|
|
|
*/
|
|
|
|
|
if (nacl == nacl_tmp)
|
|
|
|
|
continue;
|
|
|
|
|
/*
|
|
|
|
|
* Only perform PR registrations for target ports on
|
|
|
|
|
* the same fabric module as the REGISTER w/ ALL_TG_PT=1
|
|
|
|
|
* arrived.
|
|
|
|
|
*/
|
|
|
|
|
if (tfo != nacl_tmp->se_tpg->se_tpg_tfo)
|
|
|
|
|
continue;
|
|
|
|
|
/*
|
|
|
|
|
* Look for a matching Initiator Node ACL in ASCII format
|
|
|
|
|
*/
|
|
|
|
|
if (strcmp(nacl->initiatorname, nacl_tmp->initiatorname))
|
|
|
|
|
continue;
|
|
|
|
|
|
|
|
|
|
atomic_inc(&deve_tmp->pr_ref_count);
|
|
|
|
|
smp_mb__after_atomic_inc();
|
|
|
|
|
spin_unlock_bh(&port->sep_alua_lock);
|
|
|
|
|
/*
|
|
|
|
|
* Grab a configfs group dependency that is released
|
|
|
|
|
* for the exception path at label out: below, or upon
|
|
|
|
|
* completion of adding ALL_TG_PT=1 registrations in
|
|
|
|
|
* __core_scsi3_add_registration()
|
|
|
|
|
*/
|
|
|
|
|
ret = core_scsi3_lunacl_depend_item(deve_tmp);
|
|
|
|
|
if (ret < 0) {
|
2011-06-08 17:36:43 +00:00
|
|
|
|
pr_err("core_scsi3_lunacl_depend"
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
"_item() failed\n");
|
|
|
|
|
atomic_dec(&port->sep_tg_pt_ref_cnt);
|
|
|
|
|
smp_mb__after_atomic_dec();
|
|
|
|
|
atomic_dec(&deve_tmp->pr_ref_count);
|
|
|
|
|
smp_mb__after_atomic_dec();
|
|
|
|
|
goto out;
|
|
|
|
|
}
|
|
|
|
|
/*
|
|
|
|
|
* Located a matching SCSI Initiator Port on a different
|
|
|
|
|
* port, allocate the pr_reg_atp and attach it to the
|
|
|
|
|
* pr_reg->pr_reg_atp_list that will be processed once
|
|
|
|
|
* the original *pr_reg is processed in
|
|
|
|
|
* __core_scsi3_add_registration()
|
|
|
|
|
*/
|
|
|
|
|
pr_reg_atp = __core_scsi3_do_alloc_registration(dev,
|
|
|
|
|
nacl_tmp, deve_tmp, NULL,
|
|
|
|
|
sa_res_key, all_tg_pt, aptpl);
|
2011-06-08 17:36:43 +00:00
|
|
|
|
if (!pr_reg_atp) {
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
atomic_dec(&port->sep_tg_pt_ref_cnt);
|
|
|
|
|
smp_mb__after_atomic_dec();
|
|
|
|
|
atomic_dec(&deve_tmp->pr_ref_count);
|
|
|
|
|
smp_mb__after_atomic_dec();
|
|
|
|
|
core_scsi3_lunacl_undepend_item(deve_tmp);
|
|
|
|
|
goto out;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
list_add_tail(&pr_reg_atp->pr_reg_atp_mem_list,
|
|
|
|
|
&pr_reg->pr_reg_atp_list);
|
|
|
|
|
spin_lock_bh(&port->sep_alua_lock);
|
|
|
|
|
}
|
|
|
|
|
spin_unlock_bh(&port->sep_alua_lock);
|
|
|
|
|
|
|
|
|
|
spin_lock(&dev->se_port_lock);
|
|
|
|
|
atomic_dec(&port->sep_tg_pt_ref_cnt);
|
|
|
|
|
smp_mb__after_atomic_dec();
|
|
|
|
|
}
|
|
|
|
|
spin_unlock(&dev->se_port_lock);
|
|
|
|
|
|
|
|
|
|
return pr_reg;
|
|
|
|
|
out:
|
|
|
|
|
list_for_each_entry_safe(pr_reg_tmp, pr_reg_tmp_safe,
|
|
|
|
|
&pr_reg->pr_reg_atp_list, pr_reg_atp_mem_list) {
|
|
|
|
|
list_del(&pr_reg_tmp->pr_reg_atp_mem_list);
|
|
|
|
|
core_scsi3_lunacl_undepend_item(pr_reg_tmp->pr_reg_deve);
|
|
|
|
|
kmem_cache_free(t10_pr_reg_cache, pr_reg_tmp);
|
|
|
|
|
}
|
|
|
|
|
kmem_cache_free(t10_pr_reg_cache, pr_reg);
|
|
|
|
|
return NULL;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
int core_scsi3_alloc_aptpl_registration(
|
2011-07-19 08:55:10 +00:00
|
|
|
|
struct t10_reservation *pr_tmpl,
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
u64 sa_res_key,
|
|
|
|
|
unsigned char *i_port,
|
|
|
|
|
unsigned char *isid,
|
|
|
|
|
u32 mapped_lun,
|
|
|
|
|
unsigned char *t_port,
|
|
|
|
|
u16 tpgt,
|
|
|
|
|
u32 target_lun,
|
|
|
|
|
int res_holder,
|
|
|
|
|
int all_tg_pt,
|
|
|
|
|
u8 type)
|
|
|
|
|
{
|
|
|
|
|
struct t10_pr_registration *pr_reg;
|
|
|
|
|
|
2011-06-08 17:36:43 +00:00
|
|
|
|
if (!i_port || !t_port || !sa_res_key) {
|
|
|
|
|
pr_err("Illegal parameters for APTPL registration\n");
|
2011-07-19 08:55:10 +00:00
|
|
|
|
return -EINVAL;
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
pr_reg = kmem_cache_zalloc(t10_pr_reg_cache, GFP_KERNEL);
|
2011-06-08 17:36:43 +00:00
|
|
|
|
if (!pr_reg) {
|
|
|
|
|
pr_err("Unable to allocate struct t10_pr_registration\n");
|
2011-07-19 08:55:10 +00:00
|
|
|
|
return -ENOMEM;
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
}
|
|
|
|
|
pr_reg->pr_aptpl_buf = kzalloc(pr_tmpl->pr_aptpl_buf_len, GFP_KERNEL);
|
|
|
|
|
|
|
|
|
|
INIT_LIST_HEAD(&pr_reg->pr_reg_list);
|
|
|
|
|
INIT_LIST_HEAD(&pr_reg->pr_reg_abort_list);
|
|
|
|
|
INIT_LIST_HEAD(&pr_reg->pr_reg_aptpl_list);
|
|
|
|
|
INIT_LIST_HEAD(&pr_reg->pr_reg_atp_list);
|
|
|
|
|
INIT_LIST_HEAD(&pr_reg->pr_reg_atp_mem_list);
|
|
|
|
|
atomic_set(&pr_reg->pr_res_holders, 0);
|
|
|
|
|
pr_reg->pr_reg_nacl = NULL;
|
|
|
|
|
pr_reg->pr_reg_deve = NULL;
|
|
|
|
|
pr_reg->pr_res_mapped_lun = mapped_lun;
|
|
|
|
|
pr_reg->pr_aptpl_target_lun = target_lun;
|
|
|
|
|
pr_reg->pr_res_key = sa_res_key;
|
|
|
|
|
pr_reg->pr_reg_all_tg_pt = all_tg_pt;
|
|
|
|
|
pr_reg->pr_reg_aptpl = 1;
|
|
|
|
|
pr_reg->pr_reg_tg_pt_lun = NULL;
|
|
|
|
|
pr_reg->pr_res_scope = 0; /* Always LUN_SCOPE */
|
|
|
|
|
pr_reg->pr_res_type = type;
|
|
|
|
|
/*
|
|
|
|
|
* If an ISID value had been saved in APTPL metadata for this
|
|
|
|
|
* SCSI Initiator Port, restore it now.
|
|
|
|
|
*/
|
|
|
|
|
if (isid != NULL) {
|
|
|
|
|
pr_reg->pr_reg_bin_isid = get_unaligned_be64(isid);
|
|
|
|
|
snprintf(pr_reg->pr_reg_isid, PR_REG_ISID_LEN, "%s", isid);
|
|
|
|
|
pr_reg->isid_present_at_reg = 1;
|
|
|
|
|
}
|
|
|
|
|
/*
|
|
|
|
|
* Copy the i_port and t_port information from caller.
|
|
|
|
|
*/
|
|
|
|
|
snprintf(pr_reg->pr_iport, PR_APTPL_MAX_IPORT_LEN, "%s", i_port);
|
|
|
|
|
snprintf(pr_reg->pr_tport, PR_APTPL_MAX_TPORT_LEN, "%s", t_port);
|
|
|
|
|
pr_reg->pr_reg_tpgt = tpgt;
|
|
|
|
|
/*
|
|
|
|
|
* Set pr_res_holder from caller, the pr_reg who is the reservation
|
|
|
|
|
* holder will get it's pointer set in core_scsi3_aptpl_reserve() once
|
|
|
|
|
* the Initiator Node LUN ACL from the fabric module is created for
|
|
|
|
|
* this registration.
|
|
|
|
|
*/
|
|
|
|
|
pr_reg->pr_res_holder = res_holder;
|
|
|
|
|
|
|
|
|
|
list_add_tail(&pr_reg->pr_reg_aptpl_list, &pr_tmpl->aptpl_reg_list);
|
2011-06-08 17:36:43 +00:00
|
|
|
|
pr_debug("SPC-3 PR APTPL Successfully added registration%s from"
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
" metadata\n", (res_holder) ? "+reservation" : "");
|
|
|
|
|
return 0;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
static void core_scsi3_aptpl_reserve(
|
|
|
|
|
struct se_device *dev,
|
|
|
|
|
struct se_portal_group *tpg,
|
|
|
|
|
struct se_node_acl *node_acl,
|
|
|
|
|
struct t10_pr_registration *pr_reg)
|
|
|
|
|
{
|
|
|
|
|
char i_buf[PR_REG_ISID_ID_LEN];
|
|
|
|
|
int prf_isid;
|
|
|
|
|
|
|
|
|
|
memset(i_buf, 0, PR_REG_ISID_ID_LEN);
|
|
|
|
|
prf_isid = core_pr_dump_initiator_port(pr_reg, &i_buf[0],
|
|
|
|
|
PR_REG_ISID_ID_LEN);
|
|
|
|
|
|
|
|
|
|
spin_lock(&dev->dev_reservation_lock);
|
|
|
|
|
dev->dev_pr_res_holder = pr_reg;
|
|
|
|
|
spin_unlock(&dev->dev_reservation_lock);
|
|
|
|
|
|
2011-06-08 17:36:43 +00:00
|
|
|
|
pr_debug("SPC-3 PR [%s] Service Action: APTPL RESERVE created"
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
" new reservation holder TYPE: %s ALL_TG_PT: %d\n",
|
2011-07-19 08:55:10 +00:00
|
|
|
|
tpg->se_tpg_tfo->get_fabric_name(),
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
core_scsi3_pr_dump_type(pr_reg->pr_res_type),
|
|
|
|
|
(pr_reg->pr_reg_all_tg_pt) ? 1 : 0);
|
2011-06-08 17:36:43 +00:00
|
|
|
|
pr_debug("SPC-3 PR [%s] RESERVE Node: %s%s\n",
|
2011-07-19 08:55:10 +00:00
|
|
|
|
tpg->se_tpg_tfo->get_fabric_name(), node_acl->initiatorname,
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
(prf_isid) ? &i_buf[0] : "");
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
static void __core_scsi3_add_registration(struct se_device *, struct se_node_acl *,
|
|
|
|
|
struct t10_pr_registration *, int, int);
|
|
|
|
|
|
|
|
|
|
static int __core_scsi3_check_aptpl_registration(
|
|
|
|
|
struct se_device *dev,
|
|
|
|
|
struct se_portal_group *tpg,
|
|
|
|
|
struct se_lun *lun,
|
|
|
|
|
u32 target_lun,
|
|
|
|
|
struct se_node_acl *nacl,
|
|
|
|
|
struct se_dev_entry *deve)
|
|
|
|
|
{
|
|
|
|
|
struct t10_pr_registration *pr_reg, *pr_reg_tmp;
|
2012-10-08 04:03:19 +00:00
|
|
|
|
struct t10_reservation *pr_tmpl = &dev->t10_pr;
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
unsigned char i_port[PR_APTPL_MAX_IPORT_LEN];
|
|
|
|
|
unsigned char t_port[PR_APTPL_MAX_TPORT_LEN];
|
|
|
|
|
u16 tpgt;
|
|
|
|
|
|
|
|
|
|
memset(i_port, 0, PR_APTPL_MAX_IPORT_LEN);
|
|
|
|
|
memset(t_port, 0, PR_APTPL_MAX_TPORT_LEN);
|
|
|
|
|
/*
|
|
|
|
|
* Copy Initiator Port information from struct se_node_acl
|
|
|
|
|
*/
|
|
|
|
|
snprintf(i_port, PR_APTPL_MAX_IPORT_LEN, "%s", nacl->initiatorname);
|
|
|
|
|
snprintf(t_port, PR_APTPL_MAX_TPORT_LEN, "%s",
|
2011-07-19 08:55:10 +00:00
|
|
|
|
tpg->se_tpg_tfo->tpg_get_wwn(tpg));
|
|
|
|
|
tpgt = tpg->se_tpg_tfo->tpg_get_tag(tpg);
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
/*
|
|
|
|
|
* Look for the matching registrations+reservation from those
|
|
|
|
|
* created from APTPL metadata. Note that multiple registrations
|
|
|
|
|
* may exist for fabrics that use ISIDs in their SCSI Initiator Port
|
|
|
|
|
* TransportIDs.
|
|
|
|
|
*/
|
|
|
|
|
spin_lock(&pr_tmpl->aptpl_reg_lock);
|
|
|
|
|
list_for_each_entry_safe(pr_reg, pr_reg_tmp, &pr_tmpl->aptpl_reg_list,
|
|
|
|
|
pr_reg_aptpl_list) {
|
2011-06-08 17:36:43 +00:00
|
|
|
|
if (!strcmp(pr_reg->pr_iport, i_port) &&
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
(pr_reg->pr_res_mapped_lun == deve->mapped_lun) &&
|
|
|
|
|
!(strcmp(pr_reg->pr_tport, t_port)) &&
|
|
|
|
|
(pr_reg->pr_reg_tpgt == tpgt) &&
|
|
|
|
|
(pr_reg->pr_aptpl_target_lun == target_lun)) {
|
|
|
|
|
|
|
|
|
|
pr_reg->pr_reg_nacl = nacl;
|
|
|
|
|
pr_reg->pr_reg_deve = deve;
|
|
|
|
|
pr_reg->pr_reg_tg_pt_lun = lun;
|
|
|
|
|
|
|
|
|
|
list_del(&pr_reg->pr_reg_aptpl_list);
|
|
|
|
|
spin_unlock(&pr_tmpl->aptpl_reg_lock);
|
|
|
|
|
/*
|
|
|
|
|
* At this point all of the pointers in *pr_reg will
|
|
|
|
|
* be setup, so go ahead and add the registration.
|
|
|
|
|
*/
|
|
|
|
|
|
|
|
|
|
__core_scsi3_add_registration(dev, nacl, pr_reg, 0, 0);
|
|
|
|
|
/*
|
|
|
|
|
* If this registration is the reservation holder,
|
|
|
|
|
* make that happen now..
|
|
|
|
|
*/
|
|
|
|
|
if (pr_reg->pr_res_holder)
|
|
|
|
|
core_scsi3_aptpl_reserve(dev, tpg,
|
|
|
|
|
nacl, pr_reg);
|
|
|
|
|
/*
|
|
|
|
|
* Reenable pr_aptpl_active to accept new metadata
|
|
|
|
|
* updates once the SCSI device is active again..
|
|
|
|
|
*/
|
|
|
|
|
spin_lock(&pr_tmpl->aptpl_reg_lock);
|
|
|
|
|
pr_tmpl->pr_aptpl_active = 1;
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
spin_unlock(&pr_tmpl->aptpl_reg_lock);
|
|
|
|
|
|
|
|
|
|
return 0;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
int core_scsi3_check_aptpl_registration(
|
|
|
|
|
struct se_device *dev,
|
|
|
|
|
struct se_portal_group *tpg,
|
|
|
|
|
struct se_lun *lun,
|
|
|
|
|
struct se_lun_acl *lun_acl)
|
|
|
|
|
{
|
|
|
|
|
struct se_node_acl *nacl = lun_acl->se_lun_nacl;
|
2012-03-15 19:05:40 +00:00
|
|
|
|
struct se_dev_entry *deve = nacl->device_list[lun_acl->mapped_lun];
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
|
2012-10-10 21:37:15 +00:00
|
|
|
|
if (dev->dev_reservation_flags & DRF_SPC2_RESERVATIONS)
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
return 0;
|
|
|
|
|
|
|
|
|
|
return __core_scsi3_check_aptpl_registration(dev, tpg, lun,
|
|
|
|
|
lun->unpacked_lun, nacl, deve);
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
static void __core_scsi3_dump_registration(
|
|
|
|
|
struct target_core_fabric_ops *tfo,
|
|
|
|
|
struct se_device *dev,
|
|
|
|
|
struct se_node_acl *nacl,
|
|
|
|
|
struct t10_pr_registration *pr_reg,
|
|
|
|
|
int register_type)
|
|
|
|
|
{
|
|
|
|
|
struct se_portal_group *se_tpg = nacl->se_tpg;
|
|
|
|
|
char i_buf[PR_REG_ISID_ID_LEN];
|
|
|
|
|
int prf_isid;
|
|
|
|
|
|
|
|
|
|
memset(&i_buf[0], 0, PR_REG_ISID_ID_LEN);
|
|
|
|
|
prf_isid = core_pr_dump_initiator_port(pr_reg, &i_buf[0],
|
|
|
|
|
PR_REG_ISID_ID_LEN);
|
|
|
|
|
|
2011-06-08 17:36:43 +00:00
|
|
|
|
pr_debug("SPC-3 PR [%s] Service Action: REGISTER%s Initiator"
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
" Node: %s%s\n", tfo->get_fabric_name(), (register_type == 2) ?
|
|
|
|
|
"_AND_MOVE" : (register_type == 1) ?
|
|
|
|
|
"_AND_IGNORE_EXISTING_KEY" : "", nacl->initiatorname,
|
|
|
|
|
(prf_isid) ? i_buf : "");
|
2011-06-08 17:36:43 +00:00
|
|
|
|
pr_debug("SPC-3 PR [%s] registration on Target Port: %s,0x%04x\n",
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
tfo->get_fabric_name(), tfo->tpg_get_wwn(se_tpg),
|
|
|
|
|
tfo->tpg_get_tag(se_tpg));
|
2011-06-08 17:36:43 +00:00
|
|
|
|
pr_debug("SPC-3 PR [%s] for %s TCM Subsystem %s Object Target"
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
" Port(s)\n", tfo->get_fabric_name(),
|
|
|
|
|
(pr_reg->pr_reg_all_tg_pt) ? "ALL" : "SINGLE",
|
2011-07-19 08:55:10 +00:00
|
|
|
|
dev->transport->name);
|
2011-06-08 17:36:43 +00:00
|
|
|
|
pr_debug("SPC-3 PR [%s] SA Res Key: 0x%016Lx PRgeneration:"
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
" 0x%08x APTPL: %d\n", tfo->get_fabric_name(),
|
|
|
|
|
pr_reg->pr_res_key, pr_reg->pr_res_generation,
|
|
|
|
|
pr_reg->pr_reg_aptpl);
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/*
|
|
|
|
|
* this function can be called with struct se_device->dev_reservation_lock
|
|
|
|
|
* when register_move = 1
|
|
|
|
|
*/
|
|
|
|
|
static void __core_scsi3_add_registration(
|
|
|
|
|
struct se_device *dev,
|
|
|
|
|
struct se_node_acl *nacl,
|
|
|
|
|
struct t10_pr_registration *pr_reg,
|
|
|
|
|
int register_type,
|
|
|
|
|
int register_move)
|
|
|
|
|
{
|
|
|
|
|
struct target_core_fabric_ops *tfo = nacl->se_tpg->se_tpg_tfo;
|
|
|
|
|
struct t10_pr_registration *pr_reg_tmp, *pr_reg_tmp_safe;
|
2012-10-08 04:03:19 +00:00
|
|
|
|
struct t10_reservation *pr_tmpl = &dev->t10_pr;
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
|
|
|
|
|
/*
|
|
|
|
|
* Increment PRgeneration counter for struct se_device upon a successful
|
|
|
|
|
* REGISTER, see spc4r17 section 6.3.2 READ_KEYS service action
|
|
|
|
|
*
|
|
|
|
|
* Also, when register_move = 1 for PROUT REGISTER_AND_MOVE service
|
|
|
|
|
* action, the struct se_device->dev_reservation_lock will already be held,
|
|
|
|
|
* so we do not call core_scsi3_pr_generation() which grabs the lock
|
|
|
|
|
* for the REGISTER.
|
|
|
|
|
*/
|
|
|
|
|
pr_reg->pr_res_generation = (register_move) ?
|
2012-10-08 04:03:19 +00:00
|
|
|
|
dev->t10_pr.pr_generation++ :
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
core_scsi3_pr_generation(dev);
|
|
|
|
|
|
|
|
|
|
spin_lock(&pr_tmpl->registration_lock);
|
|
|
|
|
list_add_tail(&pr_reg->pr_reg_list, &pr_tmpl->registration_list);
|
|
|
|
|
pr_reg->pr_reg_deve->def_pr_registered = 1;
|
|
|
|
|
|
|
|
|
|
__core_scsi3_dump_registration(tfo, dev, nacl, pr_reg, register_type);
|
|
|
|
|
spin_unlock(&pr_tmpl->registration_lock);
|
|
|
|
|
/*
|
|
|
|
|
* Skip extra processing for ALL_TG_PT=0 or REGISTER_AND_MOVE.
|
|
|
|
|
*/
|
2011-06-08 17:36:43 +00:00
|
|
|
|
if (!pr_reg->pr_reg_all_tg_pt || register_move)
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
return;
|
|
|
|
|
/*
|
|
|
|
|
* Walk pr_reg->pr_reg_atp_list and add registrations for ALL_TG_PT=1
|
|
|
|
|
* allocated in __core_scsi3_alloc_registration()
|
|
|
|
|
*/
|
|
|
|
|
list_for_each_entry_safe(pr_reg_tmp, pr_reg_tmp_safe,
|
|
|
|
|
&pr_reg->pr_reg_atp_list, pr_reg_atp_mem_list) {
|
|
|
|
|
list_del(&pr_reg_tmp->pr_reg_atp_mem_list);
|
|
|
|
|
|
|
|
|
|
pr_reg_tmp->pr_res_generation = core_scsi3_pr_generation(dev);
|
|
|
|
|
|
|
|
|
|
spin_lock(&pr_tmpl->registration_lock);
|
|
|
|
|
list_add_tail(&pr_reg_tmp->pr_reg_list,
|
|
|
|
|
&pr_tmpl->registration_list);
|
|
|
|
|
pr_reg_tmp->pr_reg_deve->def_pr_registered = 1;
|
|
|
|
|
|
|
|
|
|
__core_scsi3_dump_registration(tfo, dev,
|
|
|
|
|
pr_reg_tmp->pr_reg_nacl, pr_reg_tmp,
|
|
|
|
|
register_type);
|
|
|
|
|
spin_unlock(&pr_tmpl->registration_lock);
|
|
|
|
|
/*
|
|
|
|
|
* Drop configfs group dependency reference from
|
|
|
|
|
* __core_scsi3_alloc_registration()
|
|
|
|
|
*/
|
|
|
|
|
core_scsi3_lunacl_undepend_item(pr_reg_tmp->pr_reg_deve);
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
static int core_scsi3_alloc_registration(
|
|
|
|
|
struct se_device *dev,
|
|
|
|
|
struct se_node_acl *nacl,
|
|
|
|
|
struct se_dev_entry *deve,
|
|
|
|
|
unsigned char *isid,
|
|
|
|
|
u64 sa_res_key,
|
|
|
|
|
int all_tg_pt,
|
|
|
|
|
int aptpl,
|
|
|
|
|
int register_type,
|
|
|
|
|
int register_move)
|
|
|
|
|
{
|
|
|
|
|
struct t10_pr_registration *pr_reg;
|
|
|
|
|
|
|
|
|
|
pr_reg = __core_scsi3_alloc_registration(dev, nacl, deve, isid,
|
|
|
|
|
sa_res_key, all_tg_pt, aptpl);
|
2011-06-08 17:36:43 +00:00
|
|
|
|
if (!pr_reg)
|
2011-07-19 08:55:10 +00:00
|
|
|
|
return -EPERM;
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
|
|
|
|
|
__core_scsi3_add_registration(dev, nacl, pr_reg,
|
|
|
|
|
register_type, register_move);
|
|
|
|
|
return 0;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
static struct t10_pr_registration *__core_scsi3_locate_pr_reg(
|
|
|
|
|
struct se_device *dev,
|
|
|
|
|
struct se_node_acl *nacl,
|
|
|
|
|
unsigned char *isid)
|
|
|
|
|
{
|
2012-10-08 04:03:19 +00:00
|
|
|
|
struct t10_reservation *pr_tmpl = &dev->t10_pr;
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
struct t10_pr_registration *pr_reg, *pr_reg_tmp;
|
|
|
|
|
struct se_portal_group *tpg;
|
|
|
|
|
|
|
|
|
|
spin_lock(&pr_tmpl->registration_lock);
|
|
|
|
|
list_for_each_entry_safe(pr_reg, pr_reg_tmp,
|
|
|
|
|
&pr_tmpl->registration_list, pr_reg_list) {
|
|
|
|
|
/*
|
|
|
|
|
* First look for a matching struct se_node_acl
|
|
|
|
|
*/
|
|
|
|
|
if (pr_reg->pr_reg_nacl != nacl)
|
|
|
|
|
continue;
|
|
|
|
|
|
|
|
|
|
tpg = pr_reg->pr_reg_nacl->se_tpg;
|
|
|
|
|
/*
|
|
|
|
|
* If this registration does NOT contain a fabric provided
|
|
|
|
|
* ISID, then we have found a match.
|
|
|
|
|
*/
|
2011-06-08 17:36:43 +00:00
|
|
|
|
if (!pr_reg->isid_present_at_reg) {
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
/*
|
|
|
|
|
* Determine if this SCSI device server requires that
|
|
|
|
|
* SCSI Intiatior TransportID w/ ISIDs is enforced
|
|
|
|
|
* for fabric modules (iSCSI) requiring them.
|
|
|
|
|
*/
|
2011-07-19 08:55:10 +00:00
|
|
|
|
if (tpg->se_tpg_tfo->sess_get_initiator_sid != NULL) {
|
2012-10-08 04:03:19 +00:00
|
|
|
|
if (dev->dev_attrib.enforce_pr_isids)
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
continue;
|
|
|
|
|
}
|
|
|
|
|
atomic_inc(&pr_reg->pr_res_holders);
|
|
|
|
|
smp_mb__after_atomic_inc();
|
|
|
|
|
spin_unlock(&pr_tmpl->registration_lock);
|
|
|
|
|
return pr_reg;
|
|
|
|
|
}
|
|
|
|
|
/*
|
|
|
|
|
* If the *pr_reg contains a fabric defined ISID for multi-value
|
|
|
|
|
* SCSI Initiator Port TransportIDs, then we expect a valid
|
|
|
|
|
* matching ISID to be provided by the local SCSI Initiator Port.
|
|
|
|
|
*/
|
2011-06-08 17:36:43 +00:00
|
|
|
|
if (!isid)
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
continue;
|
|
|
|
|
if (strcmp(isid, pr_reg->pr_reg_isid))
|
|
|
|
|
continue;
|
|
|
|
|
|
|
|
|
|
atomic_inc(&pr_reg->pr_res_holders);
|
|
|
|
|
smp_mb__after_atomic_inc();
|
|
|
|
|
spin_unlock(&pr_tmpl->registration_lock);
|
|
|
|
|
return pr_reg;
|
|
|
|
|
}
|
|
|
|
|
spin_unlock(&pr_tmpl->registration_lock);
|
|
|
|
|
|
|
|
|
|
return NULL;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
static struct t10_pr_registration *core_scsi3_locate_pr_reg(
|
|
|
|
|
struct se_device *dev,
|
|
|
|
|
struct se_node_acl *nacl,
|
|
|
|
|
struct se_session *sess)
|
|
|
|
|
{
|
|
|
|
|
struct se_portal_group *tpg = nacl->se_tpg;
|
|
|
|
|
unsigned char buf[PR_REG_ISID_LEN], *isid_ptr = NULL;
|
|
|
|
|
|
2011-07-19 08:55:10 +00:00
|
|
|
|
if (tpg->se_tpg_tfo->sess_get_initiator_sid != NULL) {
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
memset(&buf[0], 0, PR_REG_ISID_LEN);
|
2011-07-19 08:55:10 +00:00
|
|
|
|
tpg->se_tpg_tfo->sess_get_initiator_sid(sess, &buf[0],
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
PR_REG_ISID_LEN);
|
|
|
|
|
isid_ptr = &buf[0];
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
return __core_scsi3_locate_pr_reg(dev, nacl, isid_ptr);
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
static void core_scsi3_put_pr_reg(struct t10_pr_registration *pr_reg)
|
|
|
|
|
{
|
|
|
|
|
atomic_dec(&pr_reg->pr_res_holders);
|
|
|
|
|
smp_mb__after_atomic_dec();
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
static int core_scsi3_check_implict_release(
|
|
|
|
|
struct se_device *dev,
|
|
|
|
|
struct t10_pr_registration *pr_reg)
|
|
|
|
|
{
|
|
|
|
|
struct se_node_acl *nacl = pr_reg->pr_reg_nacl;
|
|
|
|
|
struct t10_pr_registration *pr_res_holder;
|
|
|
|
|
int ret = 0;
|
|
|
|
|
|
|
|
|
|
spin_lock(&dev->dev_reservation_lock);
|
|
|
|
|
pr_res_holder = dev->dev_pr_res_holder;
|
2011-06-08 17:36:43 +00:00
|
|
|
|
if (!pr_res_holder) {
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
spin_unlock(&dev->dev_reservation_lock);
|
|
|
|
|
return ret;
|
|
|
|
|
}
|
|
|
|
|
if (pr_res_holder == pr_reg) {
|
|
|
|
|
/*
|
|
|
|
|
* Perform an implict RELEASE if the registration that
|
|
|
|
|
* is being released is holding the reservation.
|
|
|
|
|
*
|
|
|
|
|
* From spc4r17, section 5.7.11.1:
|
|
|
|
|
*
|
|
|
|
|
* e) If the I_T nexus is the persistent reservation holder
|
|
|
|
|
* and the persistent reservation is not an all registrants
|
|
|
|
|
* type, then a PERSISTENT RESERVE OUT command with REGISTER
|
|
|
|
|
* service action or REGISTER AND IGNORE EXISTING KEY
|
|
|
|
|
* service action with the SERVICE ACTION RESERVATION KEY
|
|
|
|
|
* field set to zero (see 5.7.11.3).
|
|
|
|
|
*/
|
|
|
|
|
__core_scsi3_complete_pro_release(dev, nacl, pr_reg, 0);
|
|
|
|
|
ret = 1;
|
|
|
|
|
/*
|
|
|
|
|
* For 'All Registrants' reservation types, all existing
|
|
|
|
|
* registrations are still processed as reservation holders
|
|
|
|
|
* in core_scsi3_pr_seq_non_holder() after the initial
|
|
|
|
|
* reservation holder is implictly released here.
|
|
|
|
|
*/
|
|
|
|
|
} else if (pr_reg->pr_reg_all_tg_pt &&
|
|
|
|
|
(!strcmp(pr_res_holder->pr_reg_nacl->initiatorname,
|
|
|
|
|
pr_reg->pr_reg_nacl->initiatorname)) &&
|
|
|
|
|
(pr_res_holder->pr_res_key == pr_reg->pr_res_key)) {
|
2011-06-08 17:36:43 +00:00
|
|
|
|
pr_err("SPC-3 PR: Unable to perform ALL_TG_PT=1"
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
" UNREGISTER while existing reservation with matching"
|
|
|
|
|
" key 0x%016Lx is present from another SCSI Initiator"
|
|
|
|
|
" Port\n", pr_reg->pr_res_key);
|
2011-07-19 08:55:10 +00:00
|
|
|
|
ret = -EPERM;
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
}
|
|
|
|
|
spin_unlock(&dev->dev_reservation_lock);
|
|
|
|
|
|
|
|
|
|
return ret;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/*
|
2011-07-19 08:55:10 +00:00
|
|
|
|
* Called with struct t10_reservation->registration_lock held.
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
*/
|
|
|
|
|
static void __core_scsi3_free_registration(
|
|
|
|
|
struct se_device *dev,
|
|
|
|
|
struct t10_pr_registration *pr_reg,
|
|
|
|
|
struct list_head *preempt_and_abort_list,
|
|
|
|
|
int dec_holders)
|
|
|
|
|
{
|
|
|
|
|
struct target_core_fabric_ops *tfo =
|
|
|
|
|
pr_reg->pr_reg_nacl->se_tpg->se_tpg_tfo;
|
2012-10-08 04:03:19 +00:00
|
|
|
|
struct t10_reservation *pr_tmpl = &dev->t10_pr;
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
char i_buf[PR_REG_ISID_ID_LEN];
|
|
|
|
|
int prf_isid;
|
|
|
|
|
|
|
|
|
|
memset(i_buf, 0, PR_REG_ISID_ID_LEN);
|
|
|
|
|
prf_isid = core_pr_dump_initiator_port(pr_reg, &i_buf[0],
|
|
|
|
|
PR_REG_ISID_ID_LEN);
|
|
|
|
|
|
|
|
|
|
pr_reg->pr_reg_deve->def_pr_registered = 0;
|
|
|
|
|
pr_reg->pr_reg_deve->pr_res_key = 0;
|
|
|
|
|
list_del(&pr_reg->pr_reg_list);
|
|
|
|
|
/*
|
|
|
|
|
* Caller accessing *pr_reg using core_scsi3_locate_pr_reg(),
|
|
|
|
|
* so call core_scsi3_put_pr_reg() to decrement our reference.
|
|
|
|
|
*/
|
|
|
|
|
if (dec_holders)
|
|
|
|
|
core_scsi3_put_pr_reg(pr_reg);
|
|
|
|
|
/*
|
|
|
|
|
* Wait until all reference from any other I_T nexuses for this
|
|
|
|
|
* *pr_reg have been released. Because list_del() is called above,
|
|
|
|
|
* the last core_scsi3_put_pr_reg(pr_reg) will release this reference
|
|
|
|
|
* count back to zero, and we release *pr_reg.
|
|
|
|
|
*/
|
|
|
|
|
while (atomic_read(&pr_reg->pr_res_holders) != 0) {
|
|
|
|
|
spin_unlock(&pr_tmpl->registration_lock);
|
2011-06-08 17:36:43 +00:00
|
|
|
|
pr_debug("SPC-3 PR [%s] waiting for pr_res_holders\n",
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
tfo->get_fabric_name());
|
|
|
|
|
cpu_relax();
|
|
|
|
|
spin_lock(&pr_tmpl->registration_lock);
|
|
|
|
|
}
|
|
|
|
|
|
2011-06-08 17:36:43 +00:00
|
|
|
|
pr_debug("SPC-3 PR [%s] Service Action: UNREGISTER Initiator"
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
" Node: %s%s\n", tfo->get_fabric_name(),
|
|
|
|
|
pr_reg->pr_reg_nacl->initiatorname,
|
|
|
|
|
(prf_isid) ? &i_buf[0] : "");
|
2011-06-08 17:36:43 +00:00
|
|
|
|
pr_debug("SPC-3 PR [%s] for %s TCM Subsystem %s Object Target"
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
" Port(s)\n", tfo->get_fabric_name(),
|
|
|
|
|
(pr_reg->pr_reg_all_tg_pt) ? "ALL" : "SINGLE",
|
2011-07-19 08:55:10 +00:00
|
|
|
|
dev->transport->name);
|
2011-06-08 17:36:43 +00:00
|
|
|
|
pr_debug("SPC-3 PR [%s] SA Res Key: 0x%016Lx PRgeneration:"
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
" 0x%08x\n", tfo->get_fabric_name(), pr_reg->pr_res_key,
|
|
|
|
|
pr_reg->pr_res_generation);
|
|
|
|
|
|
2011-06-08 17:36:43 +00:00
|
|
|
|
if (!preempt_and_abort_list) {
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
pr_reg->pr_reg_deve = NULL;
|
|
|
|
|
pr_reg->pr_reg_nacl = NULL;
|
|
|
|
|
kfree(pr_reg->pr_aptpl_buf);
|
|
|
|
|
kmem_cache_free(t10_pr_reg_cache, pr_reg);
|
|
|
|
|
return;
|
|
|
|
|
}
|
|
|
|
|
/*
|
|
|
|
|
* For PREEMPT_AND_ABORT, the list of *pr_reg in preempt_and_abort_list
|
|
|
|
|
* are released once the ABORT_TASK_SET has completed..
|
|
|
|
|
*/
|
|
|
|
|
list_add_tail(&pr_reg->pr_reg_abort_list, preempt_and_abort_list);
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
void core_scsi3_free_pr_reg_from_nacl(
|
|
|
|
|
struct se_device *dev,
|
|
|
|
|
struct se_node_acl *nacl)
|
|
|
|
|
{
|
2012-10-08 04:03:19 +00:00
|
|
|
|
struct t10_reservation *pr_tmpl = &dev->t10_pr;
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
struct t10_pr_registration *pr_reg, *pr_reg_tmp, *pr_res_holder;
|
|
|
|
|
/*
|
|
|
|
|
* If the passed se_node_acl matches the reservation holder,
|
|
|
|
|
* release the reservation.
|
|
|
|
|
*/
|
|
|
|
|
spin_lock(&dev->dev_reservation_lock);
|
|
|
|
|
pr_res_holder = dev->dev_pr_res_holder;
|
|
|
|
|
if ((pr_res_holder != NULL) &&
|
|
|
|
|
(pr_res_holder->pr_reg_nacl == nacl))
|
|
|
|
|
__core_scsi3_complete_pro_release(dev, nacl, pr_res_holder, 0);
|
|
|
|
|
spin_unlock(&dev->dev_reservation_lock);
|
|
|
|
|
/*
|
|
|
|
|
* Release any registration associated with the struct se_node_acl.
|
|
|
|
|
*/
|
|
|
|
|
spin_lock(&pr_tmpl->registration_lock);
|
|
|
|
|
list_for_each_entry_safe(pr_reg, pr_reg_tmp,
|
|
|
|
|
&pr_tmpl->registration_list, pr_reg_list) {
|
|
|
|
|
|
|
|
|
|
if (pr_reg->pr_reg_nacl != nacl)
|
|
|
|
|
continue;
|
|
|
|
|
|
|
|
|
|
__core_scsi3_free_registration(dev, pr_reg, NULL, 0);
|
|
|
|
|
}
|
|
|
|
|
spin_unlock(&pr_tmpl->registration_lock);
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
void core_scsi3_free_all_registrations(
|
|
|
|
|
struct se_device *dev)
|
|
|
|
|
{
|
2012-10-08 04:03:19 +00:00
|
|
|
|
struct t10_reservation *pr_tmpl = &dev->t10_pr;
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
struct t10_pr_registration *pr_reg, *pr_reg_tmp, *pr_res_holder;
|
|
|
|
|
|
|
|
|
|
spin_lock(&dev->dev_reservation_lock);
|
|
|
|
|
pr_res_holder = dev->dev_pr_res_holder;
|
|
|
|
|
if (pr_res_holder != NULL) {
|
|
|
|
|
struct se_node_acl *pr_res_nacl = pr_res_holder->pr_reg_nacl;
|
|
|
|
|
__core_scsi3_complete_pro_release(dev, pr_res_nacl,
|
|
|
|
|
pr_res_holder, 0);
|
|
|
|
|
}
|
|
|
|
|
spin_unlock(&dev->dev_reservation_lock);
|
|
|
|
|
|
|
|
|
|
spin_lock(&pr_tmpl->registration_lock);
|
|
|
|
|
list_for_each_entry_safe(pr_reg, pr_reg_tmp,
|
|
|
|
|
&pr_tmpl->registration_list, pr_reg_list) {
|
|
|
|
|
|
|
|
|
|
__core_scsi3_free_registration(dev, pr_reg, NULL, 0);
|
|
|
|
|
}
|
|
|
|
|
spin_unlock(&pr_tmpl->registration_lock);
|
|
|
|
|
|
|
|
|
|
spin_lock(&pr_tmpl->aptpl_reg_lock);
|
|
|
|
|
list_for_each_entry_safe(pr_reg, pr_reg_tmp, &pr_tmpl->aptpl_reg_list,
|
|
|
|
|
pr_reg_aptpl_list) {
|
|
|
|
|
list_del(&pr_reg->pr_reg_aptpl_list);
|
|
|
|
|
kfree(pr_reg->pr_aptpl_buf);
|
|
|
|
|
kmem_cache_free(t10_pr_reg_cache, pr_reg);
|
|
|
|
|
}
|
|
|
|
|
spin_unlock(&pr_tmpl->aptpl_reg_lock);
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
static int core_scsi3_tpg_depend_item(struct se_portal_group *tpg)
|
|
|
|
|
{
|
2011-07-19 08:55:10 +00:00
|
|
|
|
return configfs_depend_item(tpg->se_tpg_tfo->tf_subsys,
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
&tpg->tpg_group.cg_item);
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
static void core_scsi3_tpg_undepend_item(struct se_portal_group *tpg)
|
|
|
|
|
{
|
2011-07-19 08:55:10 +00:00
|
|
|
|
configfs_undepend_item(tpg->se_tpg_tfo->tf_subsys,
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
&tpg->tpg_group.cg_item);
|
|
|
|
|
|
|
|
|
|
atomic_dec(&tpg->tpg_pr_ref_count);
|
|
|
|
|
smp_mb__after_atomic_dec();
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
static int core_scsi3_nodeacl_depend_item(struct se_node_acl *nacl)
|
|
|
|
|
{
|
|
|
|
|
struct se_portal_group *tpg = nacl->se_tpg;
|
|
|
|
|
|
|
|
|
|
if (nacl->dynamic_node_acl)
|
|
|
|
|
return 0;
|
|
|
|
|
|
2011-07-19 08:55:10 +00:00
|
|
|
|
return configfs_depend_item(tpg->se_tpg_tfo->tf_subsys,
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
&nacl->acl_group.cg_item);
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
static void core_scsi3_nodeacl_undepend_item(struct se_node_acl *nacl)
|
|
|
|
|
{
|
|
|
|
|
struct se_portal_group *tpg = nacl->se_tpg;
|
|
|
|
|
|
|
|
|
|
if (nacl->dynamic_node_acl) {
|
|
|
|
|
atomic_dec(&nacl->acl_pr_ref_count);
|
|
|
|
|
smp_mb__after_atomic_dec();
|
|
|
|
|
return;
|
|
|
|
|
}
|
|
|
|
|
|
2011-07-19 08:55:10 +00:00
|
|
|
|
configfs_undepend_item(tpg->se_tpg_tfo->tf_subsys,
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
&nacl->acl_group.cg_item);
|
|
|
|
|
|
|
|
|
|
atomic_dec(&nacl->acl_pr_ref_count);
|
|
|
|
|
smp_mb__after_atomic_dec();
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
static int core_scsi3_lunacl_depend_item(struct se_dev_entry *se_deve)
|
|
|
|
|
{
|
|
|
|
|
struct se_lun_acl *lun_acl = se_deve->se_lun_acl;
|
|
|
|
|
struct se_node_acl *nacl;
|
|
|
|
|
struct se_portal_group *tpg;
|
|
|
|
|
/*
|
|
|
|
|
* For nacl->dynamic_node_acl=1
|
|
|
|
|
*/
|
2011-06-08 17:36:43 +00:00
|
|
|
|
if (!lun_acl)
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
return 0;
|
|
|
|
|
|
|
|
|
|
nacl = lun_acl->se_lun_nacl;
|
|
|
|
|
tpg = nacl->se_tpg;
|
|
|
|
|
|
2011-07-19 08:55:10 +00:00
|
|
|
|
return configfs_depend_item(tpg->se_tpg_tfo->tf_subsys,
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
&lun_acl->se_lun_group.cg_item);
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
static void core_scsi3_lunacl_undepend_item(struct se_dev_entry *se_deve)
|
|
|
|
|
{
|
|
|
|
|
struct se_lun_acl *lun_acl = se_deve->se_lun_acl;
|
|
|
|
|
struct se_node_acl *nacl;
|
|
|
|
|
struct se_portal_group *tpg;
|
|
|
|
|
/*
|
|
|
|
|
* For nacl->dynamic_node_acl=1
|
|
|
|
|
*/
|
2011-06-08 17:36:43 +00:00
|
|
|
|
if (!lun_acl) {
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
atomic_dec(&se_deve->pr_ref_count);
|
|
|
|
|
smp_mb__after_atomic_dec();
|
|
|
|
|
return;
|
|
|
|
|
}
|
|
|
|
|
nacl = lun_acl->se_lun_nacl;
|
|
|
|
|
tpg = nacl->se_tpg;
|
|
|
|
|
|
2011-07-19 08:55:10 +00:00
|
|
|
|
configfs_undepend_item(tpg->se_tpg_tfo->tf_subsys,
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
&lun_acl->se_lun_group.cg_item);
|
|
|
|
|
|
|
|
|
|
atomic_dec(&se_deve->pr_ref_count);
|
|
|
|
|
smp_mb__after_atomic_dec();
|
|
|
|
|
}
|
|
|
|
|
|
2012-11-06 20:24:09 +00:00
|
|
|
|
static sense_reason_t
|
|
|
|
|
core_scsi3_decode_spec_i_port(
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
struct se_cmd *cmd,
|
|
|
|
|
struct se_portal_group *tpg,
|
|
|
|
|
unsigned char *l_isid,
|
|
|
|
|
u64 sa_res_key,
|
|
|
|
|
int all_tg_pt,
|
|
|
|
|
int aptpl)
|
|
|
|
|
{
|
2011-07-19 10:26:37 +00:00
|
|
|
|
struct se_device *dev = cmd->se_dev;
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
struct se_port *tmp_port;
|
|
|
|
|
struct se_portal_group *dest_tpg = NULL, *tmp_tpg;
|
2011-07-19 08:55:10 +00:00
|
|
|
|
struct se_session *se_sess = cmd->se_sess;
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
struct se_node_acl *dest_node_acl = NULL;
|
|
|
|
|
struct se_dev_entry *dest_se_deve = NULL, *local_se_deve;
|
|
|
|
|
struct t10_pr_registration *dest_pr_reg, *local_pr_reg, *pr_reg_e;
|
|
|
|
|
struct t10_pr_registration *pr_reg_tmp, *pr_reg_tmp_safe;
|
2012-01-12 18:41:18 +00:00
|
|
|
|
LIST_HEAD(tid_dest_list);
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
struct pr_transport_id_holder *tidh_new, *tidh, *tidh_tmp;
|
|
|
|
|
struct target_core_fabric_ops *tmp_tf_ops;
|
2011-07-20 19:13:28 +00:00
|
|
|
|
unsigned char *buf;
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
unsigned char *ptr, *i_str = NULL, proto_ident, tmp_proto_ident;
|
|
|
|
|
char *iport_ptr = NULL, dest_iport[64], i_buf[PR_REG_ISID_ID_LEN];
|
2012-11-06 20:24:09 +00:00
|
|
|
|
sense_reason_t ret;
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
u32 tpdl, tid_len = 0;
|
2012-11-06 20:24:09 +00:00
|
|
|
|
int dest_local_nexus, prf_isid;
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
u32 dest_rtpi = 0;
|
|
|
|
|
|
|
|
|
|
memset(dest_iport, 0, 64);
|
|
|
|
|
|
2012-03-15 19:05:40 +00:00
|
|
|
|
local_se_deve = se_sess->se_node_acl->device_list[cmd->orig_fe_lun];
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
/*
|
|
|
|
|
* Allocate a struct pr_transport_id_holder and setup the
|
|
|
|
|
* local_node_acl and local_se_deve pointers and add to
|
|
|
|
|
* struct list_head tid_dest_list for add registration
|
|
|
|
|
* processing in the loop of tid_dest_list below.
|
|
|
|
|
*/
|
|
|
|
|
tidh_new = kzalloc(sizeof(struct pr_transport_id_holder), GFP_KERNEL);
|
2011-06-08 17:36:43 +00:00
|
|
|
|
if (!tidh_new) {
|
|
|
|
|
pr_err("Unable to allocate tidh_new\n");
|
2012-11-06 20:24:09 +00:00
|
|
|
|
return TCM_LOGICAL_UNIT_COMMUNICATION_FAILURE;
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
}
|
|
|
|
|
INIT_LIST_HEAD(&tidh_new->dest_list);
|
|
|
|
|
tidh_new->dest_tpg = tpg;
|
|
|
|
|
tidh_new->dest_node_acl = se_sess->se_node_acl;
|
|
|
|
|
tidh_new->dest_se_deve = local_se_deve;
|
|
|
|
|
|
2011-07-19 10:26:37 +00:00
|
|
|
|
local_pr_reg = __core_scsi3_alloc_registration(cmd->se_dev,
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
se_sess->se_node_acl, local_se_deve, l_isid,
|
|
|
|
|
sa_res_key, all_tg_pt, aptpl);
|
2011-06-08 17:36:43 +00:00
|
|
|
|
if (!local_pr_reg) {
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
kfree(tidh_new);
|
2012-11-06 20:24:09 +00:00
|
|
|
|
return TCM_LOGICAL_UNIT_COMMUNICATION_FAILURE;
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
}
|
|
|
|
|
tidh_new->dest_pr_reg = local_pr_reg;
|
|
|
|
|
/*
|
|
|
|
|
* The local I_T nexus does not hold any configfs dependances,
|
|
|
|
|
* so we set tid_h->dest_local_nexus=1 to prevent the
|
|
|
|
|
* configfs_undepend_item() calls in the tid_dest_list loops below.
|
|
|
|
|
*/
|
|
|
|
|
tidh_new->dest_local_nexus = 1;
|
|
|
|
|
list_add_tail(&tidh_new->dest_list, &tid_dest_list);
|
2011-07-20 19:13:28 +00:00
|
|
|
|
|
2012-09-07 15:30:33 +00:00
|
|
|
|
if (cmd->data_length < 28) {
|
|
|
|
|
pr_warn("SPC-PR: Received PR OUT parameter list"
|
|
|
|
|
" length too small: %u\n", cmd->data_length);
|
2012-11-06 20:24:09 +00:00
|
|
|
|
ret = TCM_INVALID_PARAMETER_LIST;
|
2012-09-07 15:30:33 +00:00
|
|
|
|
goto out;
|
|
|
|
|
}
|
|
|
|
|
|
2012-01-17 00:57:08 +00:00
|
|
|
|
buf = transport_kmap_data_sg(cmd);
|
2012-11-06 20:24:09 +00:00
|
|
|
|
if (!buf) {
|
|
|
|
|
ret = TCM_LOGICAL_UNIT_COMMUNICATION_FAILURE;
|
|
|
|
|
goto out;
|
|
|
|
|
}
|
|
|
|
|
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
/*
|
|
|
|
|
* For a PERSISTENT RESERVE OUT specify initiator ports payload,
|
|
|
|
|
* first extract TransportID Parameter Data Length, and make sure
|
|
|
|
|
* the value matches up to the SCSI expected data transfer length.
|
|
|
|
|
*/
|
|
|
|
|
tpdl = (buf[24] & 0xff) << 24;
|
|
|
|
|
tpdl |= (buf[25] & 0xff) << 16;
|
|
|
|
|
tpdl |= (buf[26] & 0xff) << 8;
|
|
|
|
|
tpdl |= buf[27] & 0xff;
|
|
|
|
|
|
|
|
|
|
if ((tpdl + 28) != cmd->data_length) {
|
2011-06-08 17:36:43 +00:00
|
|
|
|
pr_err("SPC-3 PR: Illegal tpdl: %u + 28 byte header"
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
" does not equal CDB data_length: %u\n", tpdl,
|
|
|
|
|
cmd->data_length);
|
2012-11-06 20:24:09 +00:00
|
|
|
|
ret = TCM_INVALID_PARAMETER_LIST;
|
|
|
|
|
goto out_unmap;
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
}
|
|
|
|
|
/*
|
|
|
|
|
* Start processing the received transport IDs using the
|
|
|
|
|
* receiving I_T Nexus portal's fabric dependent methods to
|
|
|
|
|
* obtain the SCSI Initiator Port/Device Identifiers.
|
|
|
|
|
*/
|
|
|
|
|
ptr = &buf[28];
|
|
|
|
|
|
|
|
|
|
while (tpdl > 0) {
|
|
|
|
|
proto_ident = (ptr[0] & 0x0f);
|
|
|
|
|
dest_tpg = NULL;
|
|
|
|
|
|
|
|
|
|
spin_lock(&dev->se_port_lock);
|
|
|
|
|
list_for_each_entry(tmp_port, &dev->dev_sep_list, sep_list) {
|
|
|
|
|
tmp_tpg = tmp_port->sep_tpg;
|
2011-06-08 17:36:43 +00:00
|
|
|
|
if (!tmp_tpg)
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
continue;
|
2011-07-19 08:55:10 +00:00
|
|
|
|
tmp_tf_ops = tmp_tpg->se_tpg_tfo;
|
2011-06-08 17:36:43 +00:00
|
|
|
|
if (!tmp_tf_ops)
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
continue;
|
2011-06-08 17:36:43 +00:00
|
|
|
|
if (!tmp_tf_ops->get_fabric_proto_ident ||
|
|
|
|
|
!tmp_tf_ops->tpg_parse_pr_out_transport_id)
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
continue;
|
|
|
|
|
/*
|
|
|
|
|
* Look for the matching proto_ident provided by
|
|
|
|
|
* the received TransportID
|
|
|
|
|
*/
|
|
|
|
|
tmp_proto_ident = tmp_tf_ops->get_fabric_proto_ident(tmp_tpg);
|
|
|
|
|
if (tmp_proto_ident != proto_ident)
|
|
|
|
|
continue;
|
|
|
|
|
dest_rtpi = tmp_port->sep_rtpi;
|
|
|
|
|
|
|
|
|
|
i_str = tmp_tf_ops->tpg_parse_pr_out_transport_id(
|
|
|
|
|
tmp_tpg, (const char *)ptr, &tid_len,
|
|
|
|
|
&iport_ptr);
|
2011-06-08 17:36:43 +00:00
|
|
|
|
if (!i_str)
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
continue;
|
|
|
|
|
|
|
|
|
|
atomic_inc(&tmp_tpg->tpg_pr_ref_count);
|
|
|
|
|
smp_mb__after_atomic_inc();
|
|
|
|
|
spin_unlock(&dev->se_port_lock);
|
|
|
|
|
|
2012-11-06 20:24:09 +00:00
|
|
|
|
if (core_scsi3_tpg_depend_item(tmp_tpg)) {
|
2011-06-08 17:36:43 +00:00
|
|
|
|
pr_err(" core_scsi3_tpg_depend_item()"
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
" for tmp_tpg\n");
|
|
|
|
|
atomic_dec(&tmp_tpg->tpg_pr_ref_count);
|
|
|
|
|
smp_mb__after_atomic_dec();
|
2012-11-06 20:24:09 +00:00
|
|
|
|
ret = TCM_LOGICAL_UNIT_COMMUNICATION_FAILURE;
|
|
|
|
|
goto out_unmap;
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
}
|
|
|
|
|
/*
|
2012-08-16 13:43:13 +00:00
|
|
|
|
* Locate the destination initiator ACL to be registered
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
* from the decoded fabric module specific TransportID
|
|
|
|
|
* at *i_str.
|
|
|
|
|
*/
|
2011-08-16 16:40:01 +00:00
|
|
|
|
spin_lock_irq(&tmp_tpg->acl_node_lock);
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
dest_node_acl = __core_tpg_get_initiator_node_acl(
|
|
|
|
|
tmp_tpg, i_str);
|
|
|
|
|
if (dest_node_acl) {
|
|
|
|
|
atomic_inc(&dest_node_acl->acl_pr_ref_count);
|
|
|
|
|
smp_mb__after_atomic_inc();
|
|
|
|
|
}
|
2011-08-16 16:40:01 +00:00
|
|
|
|
spin_unlock_irq(&tmp_tpg->acl_node_lock);
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
|
2011-06-08 17:36:43 +00:00
|
|
|
|
if (!dest_node_acl) {
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
core_scsi3_tpg_undepend_item(tmp_tpg);
|
|
|
|
|
spin_lock(&dev->se_port_lock);
|
|
|
|
|
continue;
|
|
|
|
|
}
|
|
|
|
|
|
2012-11-06 20:24:09 +00:00
|
|
|
|
if (core_scsi3_nodeacl_depend_item(dest_node_acl)) {
|
2011-06-08 17:36:43 +00:00
|
|
|
|
pr_err("configfs_depend_item() failed"
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
" for dest_node_acl->acl_group\n");
|
|
|
|
|
atomic_dec(&dest_node_acl->acl_pr_ref_count);
|
|
|
|
|
smp_mb__after_atomic_dec();
|
|
|
|
|
core_scsi3_tpg_undepend_item(tmp_tpg);
|
2012-11-06 20:24:09 +00:00
|
|
|
|
ret = TCM_LOGICAL_UNIT_COMMUNICATION_FAILURE;
|
|
|
|
|
goto out_unmap;
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
dest_tpg = tmp_tpg;
|
2011-06-08 17:36:43 +00:00
|
|
|
|
pr_debug("SPC-3 PR SPEC_I_PT: Located %s Node:"
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
" %s Port RTPI: %hu\n",
|
2011-07-19 08:55:10 +00:00
|
|
|
|
dest_tpg->se_tpg_tfo->get_fabric_name(),
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
dest_node_acl->initiatorname, dest_rtpi);
|
|
|
|
|
|
|
|
|
|
spin_lock(&dev->se_port_lock);
|
|
|
|
|
break;
|
|
|
|
|
}
|
|
|
|
|
spin_unlock(&dev->se_port_lock);
|
|
|
|
|
|
2011-06-08 17:36:43 +00:00
|
|
|
|
if (!dest_tpg) {
|
|
|
|
|
pr_err("SPC-3 PR SPEC_I_PT: Unable to locate"
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
" dest_tpg\n");
|
2012-11-06 20:24:09 +00:00
|
|
|
|
ret = TCM_INVALID_PARAMETER_LIST;
|
|
|
|
|
goto out_unmap;
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
}
|
2012-04-03 22:51:12 +00:00
|
|
|
|
|
2011-06-08 17:36:43 +00:00
|
|
|
|
pr_debug("SPC-3 PR SPEC_I_PT: Got %s data_length: %u tpdl: %u"
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
" tid_len: %d for %s + %s\n",
|
2011-07-19 08:55:10 +00:00
|
|
|
|
dest_tpg->se_tpg_tfo->get_fabric_name(), cmd->data_length,
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
tpdl, tid_len, i_str, iport_ptr);
|
2012-04-03 22:51:12 +00:00
|
|
|
|
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
if (tid_len > tpdl) {
|
2011-06-08 17:36:43 +00:00
|
|
|
|
pr_err("SPC-3 PR SPEC_I_PT: Illegal tid_len:"
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
" %u for Transport ID: %s\n", tid_len, ptr);
|
|
|
|
|
core_scsi3_nodeacl_undepend_item(dest_node_acl);
|
|
|
|
|
core_scsi3_tpg_undepend_item(dest_tpg);
|
2012-11-06 20:24:09 +00:00
|
|
|
|
ret = TCM_INVALID_PARAMETER_LIST;
|
|
|
|
|
goto out_unmap;
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
}
|
|
|
|
|
/*
|
|
|
|
|
* Locate the desintation struct se_dev_entry pointer for matching
|
|
|
|
|
* RELATIVE TARGET PORT IDENTIFIER on the receiving I_T Nexus
|
|
|
|
|
* Target Port.
|
|
|
|
|
*/
|
|
|
|
|
dest_se_deve = core_get_se_deve_from_rtpi(dest_node_acl,
|
|
|
|
|
dest_rtpi);
|
2011-06-08 17:36:43 +00:00
|
|
|
|
if (!dest_se_deve) {
|
|
|
|
|
pr_err("Unable to locate %s dest_se_deve"
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
" from destination RTPI: %hu\n",
|
2011-07-19 08:55:10 +00:00
|
|
|
|
dest_tpg->se_tpg_tfo->get_fabric_name(),
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
dest_rtpi);
|
|
|
|
|
|
|
|
|
|
core_scsi3_nodeacl_undepend_item(dest_node_acl);
|
|
|
|
|
core_scsi3_tpg_undepend_item(dest_tpg);
|
2012-11-06 20:24:09 +00:00
|
|
|
|
ret = TCM_INVALID_PARAMETER_LIST;
|
|
|
|
|
goto out_unmap;
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
}
|
|
|
|
|
|
2012-11-06 20:24:09 +00:00
|
|
|
|
if (core_scsi3_lunacl_depend_item(dest_se_deve)) {
|
2011-06-08 17:36:43 +00:00
|
|
|
|
pr_err("core_scsi3_lunacl_depend_item()"
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
" failed\n");
|
|
|
|
|
atomic_dec(&dest_se_deve->pr_ref_count);
|
|
|
|
|
smp_mb__after_atomic_dec();
|
|
|
|
|
core_scsi3_nodeacl_undepend_item(dest_node_acl);
|
|
|
|
|
core_scsi3_tpg_undepend_item(dest_tpg);
|
2012-11-06 20:24:09 +00:00
|
|
|
|
ret = TCM_LOGICAL_UNIT_COMMUNICATION_FAILURE;
|
|
|
|
|
goto out_unmap;
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
}
|
2012-04-03 22:51:12 +00:00
|
|
|
|
|
2011-06-08 17:36:43 +00:00
|
|
|
|
pr_debug("SPC-3 PR SPEC_I_PT: Located %s Node: %s"
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
" dest_se_deve mapped_lun: %u\n",
|
2011-07-19 08:55:10 +00:00
|
|
|
|
dest_tpg->se_tpg_tfo->get_fabric_name(),
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
dest_node_acl->initiatorname, dest_se_deve->mapped_lun);
|
2012-04-03 22:51:12 +00:00
|
|
|
|
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
/*
|
|
|
|
|
* Skip any TransportIDs that already have a registration for
|
|
|
|
|
* this target port.
|
|
|
|
|
*/
|
|
|
|
|
pr_reg_e = __core_scsi3_locate_pr_reg(dev, dest_node_acl,
|
|
|
|
|
iport_ptr);
|
|
|
|
|
if (pr_reg_e) {
|
|
|
|
|
core_scsi3_put_pr_reg(pr_reg_e);
|
|
|
|
|
core_scsi3_lunacl_undepend_item(dest_se_deve);
|
|
|
|
|
core_scsi3_nodeacl_undepend_item(dest_node_acl);
|
|
|
|
|
core_scsi3_tpg_undepend_item(dest_tpg);
|
|
|
|
|
ptr += tid_len;
|
|
|
|
|
tpdl -= tid_len;
|
|
|
|
|
tid_len = 0;
|
|
|
|
|
continue;
|
|
|
|
|
}
|
|
|
|
|
/*
|
|
|
|
|
* Allocate a struct pr_transport_id_holder and setup
|
|
|
|
|
* the dest_node_acl and dest_se_deve pointers for the
|
|
|
|
|
* loop below.
|
|
|
|
|
*/
|
|
|
|
|
tidh_new = kzalloc(sizeof(struct pr_transport_id_holder),
|
|
|
|
|
GFP_KERNEL);
|
2011-06-08 17:36:43 +00:00
|
|
|
|
if (!tidh_new) {
|
|
|
|
|
pr_err("Unable to allocate tidh_new\n");
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
core_scsi3_lunacl_undepend_item(dest_se_deve);
|
|
|
|
|
core_scsi3_nodeacl_undepend_item(dest_node_acl);
|
|
|
|
|
core_scsi3_tpg_undepend_item(dest_tpg);
|
2012-11-06 20:24:09 +00:00
|
|
|
|
ret = TCM_LOGICAL_UNIT_COMMUNICATION_FAILURE;
|
|
|
|
|
goto out_unmap;
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
}
|
|
|
|
|
INIT_LIST_HEAD(&tidh_new->dest_list);
|
|
|
|
|
tidh_new->dest_tpg = dest_tpg;
|
|
|
|
|
tidh_new->dest_node_acl = dest_node_acl;
|
|
|
|
|
tidh_new->dest_se_deve = dest_se_deve;
|
|
|
|
|
|
|
|
|
|
/*
|
|
|
|
|
* Allocate, but do NOT add the registration for the
|
|
|
|
|
* TransportID referenced SCSI Initiator port. This
|
|
|
|
|
* done because of the following from spc4r17 in section
|
|
|
|
|
* 6.14.3 wrt SPEC_I_PT:
|
|
|
|
|
*
|
|
|
|
|
* "If a registration fails for any initiator port (e.g., if th
|
|
|
|
|
* logical unit does not have enough resources available to
|
|
|
|
|
* hold the registration information), no registrations shall be
|
|
|
|
|
* made, and the command shall be terminated with
|
|
|
|
|
* CHECK CONDITION status."
|
|
|
|
|
*
|
|
|
|
|
* That means we call __core_scsi3_alloc_registration() here,
|
|
|
|
|
* and then call __core_scsi3_add_registration() in the
|
|
|
|
|
* 2nd loop which will never fail.
|
|
|
|
|
*/
|
2011-07-19 10:26:37 +00:00
|
|
|
|
dest_pr_reg = __core_scsi3_alloc_registration(cmd->se_dev,
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
dest_node_acl, dest_se_deve, iport_ptr,
|
|
|
|
|
sa_res_key, all_tg_pt, aptpl);
|
2011-06-08 17:36:43 +00:00
|
|
|
|
if (!dest_pr_reg) {
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
core_scsi3_lunacl_undepend_item(dest_se_deve);
|
|
|
|
|
core_scsi3_nodeacl_undepend_item(dest_node_acl);
|
|
|
|
|
core_scsi3_tpg_undepend_item(dest_tpg);
|
|
|
|
|
kfree(tidh_new);
|
2012-11-06 20:24:09 +00:00
|
|
|
|
ret = TCM_INVALID_PARAMETER_LIST;
|
|
|
|
|
goto out_unmap;
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
}
|
|
|
|
|
tidh_new->dest_pr_reg = dest_pr_reg;
|
|
|
|
|
list_add_tail(&tidh_new->dest_list, &tid_dest_list);
|
|
|
|
|
|
|
|
|
|
ptr += tid_len;
|
|
|
|
|
tpdl -= tid_len;
|
|
|
|
|
tid_len = 0;
|
|
|
|
|
|
|
|
|
|
}
|
2011-07-20 19:13:28 +00:00
|
|
|
|
|
2012-01-17 00:57:08 +00:00
|
|
|
|
transport_kunmap_data_sg(cmd);
|
2011-07-20 19:13:28 +00:00
|
|
|
|
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
/*
|
|
|
|
|
* Go ahead and create a registrations from tid_dest_list for the
|
|
|
|
|
* SPEC_I_PT provided TransportID for the *tidh referenced dest_node_acl
|
|
|
|
|
* and dest_se_deve.
|
|
|
|
|
*
|
|
|
|
|
* The SA Reservation Key from the PROUT is set for the
|
|
|
|
|
* registration, and ALL_TG_PT is also passed. ALL_TG_PT=1
|
|
|
|
|
* means that the TransportID Initiator port will be
|
|
|
|
|
* registered on all of the target ports in the SCSI target device
|
|
|
|
|
* ALL_TG_PT=0 means the registration will only be for the
|
|
|
|
|
* SCSI target port the PROUT REGISTER with SPEC_I_PT=1
|
|
|
|
|
* was received.
|
|
|
|
|
*/
|
|
|
|
|
list_for_each_entry_safe(tidh, tidh_tmp, &tid_dest_list, dest_list) {
|
|
|
|
|
dest_tpg = tidh->dest_tpg;
|
|
|
|
|
dest_node_acl = tidh->dest_node_acl;
|
|
|
|
|
dest_se_deve = tidh->dest_se_deve;
|
|
|
|
|
dest_pr_reg = tidh->dest_pr_reg;
|
|
|
|
|
dest_local_nexus = tidh->dest_local_nexus;
|
|
|
|
|
|
|
|
|
|
list_del(&tidh->dest_list);
|
|
|
|
|
kfree(tidh);
|
|
|
|
|
|
|
|
|
|
memset(i_buf, 0, PR_REG_ISID_ID_LEN);
|
|
|
|
|
prf_isid = core_pr_dump_initiator_port(dest_pr_reg, &i_buf[0],
|
|
|
|
|
PR_REG_ISID_ID_LEN);
|
|
|
|
|
|
2011-07-19 10:26:37 +00:00
|
|
|
|
__core_scsi3_add_registration(cmd->se_dev, dest_node_acl,
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
dest_pr_reg, 0, 0);
|
|
|
|
|
|
2011-06-08 17:36:43 +00:00
|
|
|
|
pr_debug("SPC-3 PR [%s] SPEC_I_PT: Successfully"
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
" registered Transport ID for Node: %s%s Mapped LUN:"
|
2011-07-19 08:55:10 +00:00
|
|
|
|
" %u\n", dest_tpg->se_tpg_tfo->get_fabric_name(),
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
dest_node_acl->initiatorname, (prf_isid) ?
|
|
|
|
|
&i_buf[0] : "", dest_se_deve->mapped_lun);
|
|
|
|
|
|
|
|
|
|
if (dest_local_nexus)
|
|
|
|
|
continue;
|
|
|
|
|
|
|
|
|
|
core_scsi3_lunacl_undepend_item(dest_se_deve);
|
|
|
|
|
core_scsi3_nodeacl_undepend_item(dest_node_acl);
|
|
|
|
|
core_scsi3_tpg_undepend_item(dest_tpg);
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
return 0;
|
2012-11-06 20:24:09 +00:00
|
|
|
|
out_unmap:
|
2012-01-17 00:57:08 +00:00
|
|
|
|
transport_kunmap_data_sg(cmd);
|
2012-11-06 20:24:09 +00:00
|
|
|
|
out:
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
/*
|
|
|
|
|
* For the failure case, release everything from tid_dest_list
|
|
|
|
|
* including *dest_pr_reg and the configfs dependances..
|
|
|
|
|
*/
|
|
|
|
|
list_for_each_entry_safe(tidh, tidh_tmp, &tid_dest_list, dest_list) {
|
|
|
|
|
dest_tpg = tidh->dest_tpg;
|
|
|
|
|
dest_node_acl = tidh->dest_node_acl;
|
|
|
|
|
dest_se_deve = tidh->dest_se_deve;
|
|
|
|
|
dest_pr_reg = tidh->dest_pr_reg;
|
|
|
|
|
dest_local_nexus = tidh->dest_local_nexus;
|
|
|
|
|
|
|
|
|
|
list_del(&tidh->dest_list);
|
|
|
|
|
kfree(tidh);
|
|
|
|
|
/*
|
|
|
|
|
* Release any extra ALL_TG_PT=1 registrations for
|
|
|
|
|
* the SPEC_I_PT=1 case.
|
|
|
|
|
*/
|
|
|
|
|
list_for_each_entry_safe(pr_reg_tmp, pr_reg_tmp_safe,
|
|
|
|
|
&dest_pr_reg->pr_reg_atp_list,
|
|
|
|
|
pr_reg_atp_mem_list) {
|
|
|
|
|
list_del(&pr_reg_tmp->pr_reg_atp_mem_list);
|
|
|
|
|
core_scsi3_lunacl_undepend_item(pr_reg_tmp->pr_reg_deve);
|
|
|
|
|
kmem_cache_free(t10_pr_reg_cache, pr_reg_tmp);
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
kfree(dest_pr_reg->pr_aptpl_buf);
|
|
|
|
|
kmem_cache_free(t10_pr_reg_cache, dest_pr_reg);
|
|
|
|
|
|
|
|
|
|
if (dest_local_nexus)
|
|
|
|
|
continue;
|
|
|
|
|
|
|
|
|
|
core_scsi3_lunacl_undepend_item(dest_se_deve);
|
|
|
|
|
core_scsi3_nodeacl_undepend_item(dest_node_acl);
|
|
|
|
|
core_scsi3_tpg_undepend_item(dest_tpg);
|
|
|
|
|
}
|
|
|
|
|
return ret;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/*
|
|
|
|
|
* Called with struct se_device->dev_reservation_lock held
|
|
|
|
|
*/
|
|
|
|
|
static int __core_scsi3_update_aptpl_buf(
|
|
|
|
|
struct se_device *dev,
|
|
|
|
|
unsigned char *buf,
|
|
|
|
|
u32 pr_aptpl_buf_len,
|
|
|
|
|
int clear_aptpl_metadata)
|
|
|
|
|
{
|
|
|
|
|
struct se_lun *lun;
|
|
|
|
|
struct se_portal_group *tpg;
|
|
|
|
|
struct t10_pr_registration *pr_reg;
|
|
|
|
|
unsigned char tmp[512], isid_buf[32];
|
|
|
|
|
ssize_t len = 0;
|
|
|
|
|
int reg_count = 0;
|
|
|
|
|
|
|
|
|
|
memset(buf, 0, pr_aptpl_buf_len);
|
|
|
|
|
/*
|
|
|
|
|
* Called to clear metadata once APTPL has been deactivated.
|
|
|
|
|
*/
|
|
|
|
|
if (clear_aptpl_metadata) {
|
|
|
|
|
snprintf(buf, pr_aptpl_buf_len,
|
|
|
|
|
"No Registrations or Reservations\n");
|
|
|
|
|
return 0;
|
|
|
|
|
}
|
|
|
|
|
/*
|
|
|
|
|
* Walk the registration list..
|
|
|
|
|
*/
|
2012-10-08 04:03:19 +00:00
|
|
|
|
spin_lock(&dev->t10_pr.registration_lock);
|
|
|
|
|
list_for_each_entry(pr_reg, &dev->t10_pr.registration_list,
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
pr_reg_list) {
|
|
|
|
|
|
|
|
|
|
tmp[0] = '\0';
|
|
|
|
|
isid_buf[0] = '\0';
|
|
|
|
|
tpg = pr_reg->pr_reg_nacl->se_tpg;
|
|
|
|
|
lun = pr_reg->pr_reg_tg_pt_lun;
|
|
|
|
|
/*
|
|
|
|
|
* Write out any ISID value to APTPL metadata that was included
|
|
|
|
|
* in the original registration.
|
|
|
|
|
*/
|
|
|
|
|
if (pr_reg->isid_present_at_reg)
|
|
|
|
|
snprintf(isid_buf, 32, "initiator_sid=%s\n",
|
|
|
|
|
pr_reg->pr_reg_isid);
|
|
|
|
|
/*
|
|
|
|
|
* Include special metadata if the pr_reg matches the
|
|
|
|
|
* reservation holder.
|
|
|
|
|
*/
|
|
|
|
|
if (dev->dev_pr_res_holder == pr_reg) {
|
|
|
|
|
snprintf(tmp, 512, "PR_REG_START: %d"
|
|
|
|
|
"\ninitiator_fabric=%s\n"
|
|
|
|
|
"initiator_node=%s\n%s"
|
|
|
|
|
"sa_res_key=%llu\n"
|
|
|
|
|
"res_holder=1\nres_type=%02x\n"
|
|
|
|
|
"res_scope=%02x\nres_all_tg_pt=%d\n"
|
|
|
|
|
"mapped_lun=%u\n", reg_count,
|
2011-07-19 08:55:10 +00:00
|
|
|
|
tpg->se_tpg_tfo->get_fabric_name(),
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
pr_reg->pr_reg_nacl->initiatorname, isid_buf,
|
|
|
|
|
pr_reg->pr_res_key, pr_reg->pr_res_type,
|
|
|
|
|
pr_reg->pr_res_scope, pr_reg->pr_reg_all_tg_pt,
|
|
|
|
|
pr_reg->pr_res_mapped_lun);
|
|
|
|
|
} else {
|
|
|
|
|
snprintf(tmp, 512, "PR_REG_START: %d\n"
|
|
|
|
|
"initiator_fabric=%s\ninitiator_node=%s\n%s"
|
|
|
|
|
"sa_res_key=%llu\nres_holder=0\n"
|
|
|
|
|
"res_all_tg_pt=%d\nmapped_lun=%u\n",
|
2011-07-19 08:55:10 +00:00
|
|
|
|
reg_count, tpg->se_tpg_tfo->get_fabric_name(),
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
pr_reg->pr_reg_nacl->initiatorname, isid_buf,
|
|
|
|
|
pr_reg->pr_res_key, pr_reg->pr_reg_all_tg_pt,
|
|
|
|
|
pr_reg->pr_res_mapped_lun);
|
|
|
|
|
}
|
|
|
|
|
|
2011-06-15 17:03:05 +00:00
|
|
|
|
if ((len + strlen(tmp) >= pr_aptpl_buf_len)) {
|
2011-06-08 17:36:43 +00:00
|
|
|
|
pr_err("Unable to update renaming"
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
" APTPL metadata\n");
|
2012-10-08 04:03:19 +00:00
|
|
|
|
spin_unlock(&dev->t10_pr.registration_lock);
|
2011-07-19 08:55:10 +00:00
|
|
|
|
return -EMSGSIZE;
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
}
|
|
|
|
|
len += sprintf(buf+len, "%s", tmp);
|
|
|
|
|
|
|
|
|
|
/*
|
|
|
|
|
* Include information about the associated SCSI target port.
|
|
|
|
|
*/
|
|
|
|
|
snprintf(tmp, 512, "target_fabric=%s\ntarget_node=%s\n"
|
|
|
|
|
"tpgt=%hu\nport_rtpi=%hu\ntarget_lun=%u\nPR_REG_END:"
|
2011-07-19 08:55:10 +00:00
|
|
|
|
" %d\n", tpg->se_tpg_tfo->get_fabric_name(),
|
|
|
|
|
tpg->se_tpg_tfo->tpg_get_wwn(tpg),
|
|
|
|
|
tpg->se_tpg_tfo->tpg_get_tag(tpg),
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
lun->lun_sep->sep_rtpi, lun->unpacked_lun, reg_count);
|
|
|
|
|
|
2011-06-15 17:03:05 +00:00
|
|
|
|
if ((len + strlen(tmp) >= pr_aptpl_buf_len)) {
|
2011-06-08 17:36:43 +00:00
|
|
|
|
pr_err("Unable to update renaming"
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
" APTPL metadata\n");
|
2012-10-08 04:03:19 +00:00
|
|
|
|
spin_unlock(&dev->t10_pr.registration_lock);
|
2011-07-19 08:55:10 +00:00
|
|
|
|
return -EMSGSIZE;
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
}
|
|
|
|
|
len += sprintf(buf+len, "%s", tmp);
|
|
|
|
|
reg_count++;
|
|
|
|
|
}
|
2012-10-08 04:03:19 +00:00
|
|
|
|
spin_unlock(&dev->t10_pr.registration_lock);
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
|
2011-06-08 17:36:43 +00:00
|
|
|
|
if (!reg_count)
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
len += sprintf(buf+len, "No Registrations or Reservations");
|
|
|
|
|
|
|
|
|
|
return 0;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
static int core_scsi3_update_aptpl_buf(
|
|
|
|
|
struct se_device *dev,
|
|
|
|
|
unsigned char *buf,
|
|
|
|
|
u32 pr_aptpl_buf_len,
|
|
|
|
|
int clear_aptpl_metadata)
|
|
|
|
|
{
|
|
|
|
|
int ret;
|
|
|
|
|
|
|
|
|
|
spin_lock(&dev->dev_reservation_lock);
|
|
|
|
|
ret = __core_scsi3_update_aptpl_buf(dev, buf, pr_aptpl_buf_len,
|
|
|
|
|
clear_aptpl_metadata);
|
|
|
|
|
spin_unlock(&dev->dev_reservation_lock);
|
|
|
|
|
|
|
|
|
|
return ret;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/*
|
|
|
|
|
* Called with struct se_device->aptpl_file_mutex held
|
|
|
|
|
*/
|
|
|
|
|
static int __core_scsi3_write_aptpl_to_file(
|
|
|
|
|
struct se_device *dev,
|
|
|
|
|
unsigned char *buf,
|
|
|
|
|
u32 pr_aptpl_buf_len)
|
|
|
|
|
{
|
2012-10-08 04:03:19 +00:00
|
|
|
|
struct t10_wwn *wwn = &dev->t10_wwn;
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
struct file *file;
|
|
|
|
|
struct iovec iov[1];
|
|
|
|
|
mm_segment_t old_fs;
|
|
|
|
|
int flags = O_RDWR | O_CREAT | O_TRUNC;
|
|
|
|
|
char path[512];
|
|
|
|
|
int ret;
|
|
|
|
|
|
|
|
|
|
memset(iov, 0, sizeof(struct iovec));
|
|
|
|
|
memset(path, 0, 512);
|
|
|
|
|
|
2011-06-15 17:03:05 +00:00
|
|
|
|
if (strlen(&wwn->unit_serial[0]) >= 512) {
|
2011-06-08 17:36:43 +00:00
|
|
|
|
pr_err("WWN value for struct se_device does not fit"
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
" into path buffer\n");
|
2011-07-19 08:55:10 +00:00
|
|
|
|
return -EMSGSIZE;
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
snprintf(path, 512, "/var/target/pr/aptpl_%s", &wwn->unit_serial[0]);
|
|
|
|
|
file = filp_open(path, flags, 0600);
|
|
|
|
|
if (IS_ERR(file) || !file || !file->f_dentry) {
|
2011-06-08 17:36:43 +00:00
|
|
|
|
pr_err("filp_open(%s) for APTPL metadata"
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
" failed\n", path);
|
2012-07-16 22:17:10 +00:00
|
|
|
|
return IS_ERR(file) ? PTR_ERR(file) : -ENOENT;
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
iov[0].iov_base = &buf[0];
|
2011-06-08 17:36:43 +00:00
|
|
|
|
if (!pr_aptpl_buf_len)
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
iov[0].iov_len = (strlen(&buf[0]) + 1); /* Add extra for NULL */
|
|
|
|
|
else
|
|
|
|
|
iov[0].iov_len = pr_aptpl_buf_len;
|
|
|
|
|
|
|
|
|
|
old_fs = get_fs();
|
|
|
|
|
set_fs(get_ds());
|
|
|
|
|
ret = vfs_writev(file, &iov[0], 1, &file->f_pos);
|
|
|
|
|
set_fs(old_fs);
|
|
|
|
|
|
|
|
|
|
if (ret < 0) {
|
2011-06-08 17:36:43 +00:00
|
|
|
|
pr_debug("Error writing APTPL metadata file: %s\n", path);
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
filp_close(file, NULL);
|
2011-07-19 08:55:10 +00:00
|
|
|
|
return -EIO;
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
}
|
|
|
|
|
filp_close(file, NULL);
|
|
|
|
|
|
|
|
|
|
return 0;
|
|
|
|
|
}
|
|
|
|
|
|
2012-11-06 20:24:09 +00:00
|
|
|
|
static int
|
|
|
|
|
core_scsi3_update_and_write_aptpl(struct se_device *dev, unsigned char *in_buf,
|
|
|
|
|
u32 in_pr_aptpl_buf_len)
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
{
|
|
|
|
|
unsigned char null_buf[64], *buf;
|
|
|
|
|
u32 pr_aptpl_buf_len;
|
2012-11-06 20:24:09 +00:00
|
|
|
|
int clear_aptpl_metadata = 0;
|
|
|
|
|
int ret;
|
|
|
|
|
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
/*
|
|
|
|
|
* Can be called with a NULL pointer from PROUT service action CLEAR
|
|
|
|
|
*/
|
2011-06-08 17:36:43 +00:00
|
|
|
|
if (!in_buf) {
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
memset(null_buf, 0, 64);
|
|
|
|
|
buf = &null_buf[0];
|
|
|
|
|
/*
|
|
|
|
|
* This will clear the APTPL metadata to:
|
|
|
|
|
* "No Registrations or Reservations" status
|
|
|
|
|
*/
|
|
|
|
|
pr_aptpl_buf_len = 64;
|
|
|
|
|
clear_aptpl_metadata = 1;
|
|
|
|
|
} else {
|
|
|
|
|
buf = in_buf;
|
|
|
|
|
pr_aptpl_buf_len = in_pr_aptpl_buf_len;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
ret = core_scsi3_update_aptpl_buf(dev, buf, pr_aptpl_buf_len,
|
|
|
|
|
clear_aptpl_metadata);
|
|
|
|
|
if (ret != 0)
|
2011-07-19 08:55:10 +00:00
|
|
|
|
return ret;
|
2012-11-06 20:24:09 +00:00
|
|
|
|
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
/*
|
|
|
|
|
* __core_scsi3_write_aptpl_to_file() will call strlen()
|
|
|
|
|
* on the passed buf to determine pr_aptpl_buf_len.
|
|
|
|
|
*/
|
2012-11-06 20:24:09 +00:00
|
|
|
|
return __core_scsi3_write_aptpl_to_file(dev, buf, 0);
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
}
|
|
|
|
|
|
2012-11-06 20:24:09 +00:00
|
|
|
|
static sense_reason_t
|
|
|
|
|
core_scsi3_emulate_pro_register(struct se_cmd *cmd, u64 res_key, u64 sa_res_key,
|
|
|
|
|
int aptpl, int all_tg_pt, int spec_i_pt, int ignore_key)
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
{
|
2011-07-19 08:55:10 +00:00
|
|
|
|
struct se_session *se_sess = cmd->se_sess;
|
2011-07-19 10:26:37 +00:00
|
|
|
|
struct se_device *dev = cmd->se_dev;
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
struct se_dev_entry *se_deve;
|
2011-07-19 08:55:10 +00:00
|
|
|
|
struct se_lun *se_lun = cmd->se_lun;
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
struct se_portal_group *se_tpg;
|
|
|
|
|
struct t10_pr_registration *pr_reg, *pr_reg_p, *pr_reg_tmp, *pr_reg_e;
|
2012-10-08 04:03:19 +00:00
|
|
|
|
struct t10_reservation *pr_tmpl = &dev->t10_pr;
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
/* Used for APTPL metadata w/ UNREGISTER */
|
|
|
|
|
unsigned char *pr_aptpl_buf = NULL;
|
|
|
|
|
unsigned char isid_buf[PR_REG_ISID_LEN], *isid_ptr = NULL;
|
2012-11-06 20:24:09 +00:00
|
|
|
|
sense_reason_t ret;
|
|
|
|
|
int pr_holder = 0, type;
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
|
2011-06-08 17:36:43 +00:00
|
|
|
|
if (!se_sess || !se_lun) {
|
|
|
|
|
pr_err("SPC-3 PR: se_sess || struct se_lun is NULL!\n");
|
2012-11-06 20:24:09 +00:00
|
|
|
|
return TCM_LOGICAL_UNIT_COMMUNICATION_FAILURE;
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
}
|
|
|
|
|
se_tpg = se_sess->se_tpg;
|
2012-03-15 19:05:40 +00:00
|
|
|
|
se_deve = se_sess->se_node_acl->device_list[cmd->orig_fe_lun];
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
|
2011-07-19 08:55:10 +00:00
|
|
|
|
if (se_tpg->se_tpg_tfo->sess_get_initiator_sid) {
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
memset(&isid_buf[0], 0, PR_REG_ISID_LEN);
|
2011-07-19 08:55:10 +00:00
|
|
|
|
se_tpg->se_tpg_tfo->sess_get_initiator_sid(se_sess, &isid_buf[0],
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
PR_REG_ISID_LEN);
|
|
|
|
|
isid_ptr = &isid_buf[0];
|
|
|
|
|
}
|
|
|
|
|
/*
|
|
|
|
|
* Follow logic from spc4r17 Section 5.7.7, Register Behaviors Table 47
|
|
|
|
|
*/
|
|
|
|
|
pr_reg_e = core_scsi3_locate_pr_reg(dev, se_sess->se_node_acl, se_sess);
|
2011-06-08 17:36:43 +00:00
|
|
|
|
if (!pr_reg_e) {
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
if (res_key) {
|
2011-06-08 17:36:43 +00:00
|
|
|
|
pr_warn("SPC-3 PR: Reservation Key non-zero"
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
" for SA REGISTER, returning CONFLICT\n");
|
2012-11-06 20:24:09 +00:00
|
|
|
|
return TCM_RESERVATION_CONFLICT;
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
}
|
|
|
|
|
/*
|
|
|
|
|
* Do nothing but return GOOD status.
|
|
|
|
|
*/
|
2011-06-08 17:36:43 +00:00
|
|
|
|
if (!sa_res_key)
|
2011-11-04 09:36:16 +00:00
|
|
|
|
return 0;
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
|
2011-06-08 17:36:43 +00:00
|
|
|
|
if (!spec_i_pt) {
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
/*
|
|
|
|
|
* Perform the Service Action REGISTER on the Initiator
|
|
|
|
|
* Port Endpoint that the PRO was received from on the
|
|
|
|
|
* Logical Unit of the SCSI device server.
|
|
|
|
|
*/
|
2012-11-06 20:24:09 +00:00
|
|
|
|
if (core_scsi3_alloc_registration(cmd->se_dev,
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
se_sess->se_node_acl, se_deve, isid_ptr,
|
|
|
|
|
sa_res_key, all_tg_pt, aptpl,
|
2012-11-06 20:24:09 +00:00
|
|
|
|
ignore_key, 0)) {
|
2011-06-08 17:36:43 +00:00
|
|
|
|
pr_err("Unable to allocate"
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
" struct t10_pr_registration\n");
|
2012-11-06 20:24:09 +00:00
|
|
|
|
return TCM_INVALID_PARAMETER_LIST;
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
}
|
|
|
|
|
} else {
|
|
|
|
|
/*
|
|
|
|
|
* Register both the Initiator port that received
|
|
|
|
|
* PROUT SA REGISTER + SPEC_I_PT=1 and extract SCSI
|
|
|
|
|
* TransportID from Parameter list and loop through
|
|
|
|
|
* fabric dependent parameter list while calling
|
|
|
|
|
* logic from of core_scsi3_alloc_registration() for
|
|
|
|
|
* each TransportID provided SCSI Initiator Port/Device
|
|
|
|
|
*/
|
|
|
|
|
ret = core_scsi3_decode_spec_i_port(cmd, se_tpg,
|
|
|
|
|
isid_ptr, sa_res_key, all_tg_pt, aptpl);
|
|
|
|
|
if (ret != 0)
|
|
|
|
|
return ret;
|
|
|
|
|
}
|
|
|
|
|
/*
|
|
|
|
|
* Nothing left to do for the APTPL=0 case.
|
|
|
|
|
*/
|
2011-06-08 17:36:43 +00:00
|
|
|
|
if (!aptpl) {
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
pr_tmpl->pr_aptpl_active = 0;
|
2011-07-19 10:26:37 +00:00
|
|
|
|
core_scsi3_update_and_write_aptpl(cmd->se_dev, NULL, 0);
|
2011-06-08 17:36:43 +00:00
|
|
|
|
pr_debug("SPC-3 PR: Set APTPL Bit Deactivated for"
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
" REGISTER\n");
|
|
|
|
|
return 0;
|
|
|
|
|
}
|
|
|
|
|
/*
|
|
|
|
|
* Locate the newly allocated local I_T Nexus *pr_reg, and
|
|
|
|
|
* update the APTPL metadata information using its
|
|
|
|
|
* preallocated *pr_reg->pr_aptpl_buf.
|
|
|
|
|
*/
|
2011-07-19 10:26:37 +00:00
|
|
|
|
pr_reg = core_scsi3_locate_pr_reg(cmd->se_dev,
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
se_sess->se_node_acl, se_sess);
|
|
|
|
|
|
2012-11-06 20:24:09 +00:00
|
|
|
|
if (core_scsi3_update_and_write_aptpl(cmd->se_dev,
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
&pr_reg->pr_aptpl_buf[0],
|
2012-11-06 20:24:09 +00:00
|
|
|
|
pr_tmpl->pr_aptpl_buf_len)) {
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
pr_tmpl->pr_aptpl_active = 1;
|
2011-06-08 17:36:43 +00:00
|
|
|
|
pr_debug("SPC-3 PR: Set APTPL Bit Activated for REGISTER\n");
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
}
|
|
|
|
|
|
2012-11-06 20:24:09 +00:00
|
|
|
|
goto out_put_pr_reg;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/*
|
|
|
|
|
* Locate the existing *pr_reg via struct se_node_acl pointers
|
|
|
|
|
*/
|
|
|
|
|
pr_reg = pr_reg_e;
|
|
|
|
|
type = pr_reg->pr_res_type;
|
|
|
|
|
|
|
|
|
|
if (!ignore_key) {
|
|
|
|
|
if (res_key != pr_reg->pr_res_key) {
|
|
|
|
|
pr_err("SPC-3 PR REGISTER: Received"
|
|
|
|
|
" res_key: 0x%016Lx does not match"
|
|
|
|
|
" existing SA REGISTER res_key:"
|
|
|
|
|
" 0x%016Lx\n", res_key,
|
|
|
|
|
pr_reg->pr_res_key);
|
|
|
|
|
ret = TCM_RESERVATION_CONFLICT;
|
|
|
|
|
goto out_put_pr_reg;
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
}
|
2012-11-06 20:24:09 +00:00
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
if (spec_i_pt) {
|
|
|
|
|
pr_err("SPC-3 PR UNREGISTER: SPEC_I_PT"
|
|
|
|
|
" set while sa_res_key=0\n");
|
|
|
|
|
ret = TCM_INVALID_PARAMETER_LIST;
|
|
|
|
|
goto out_put_pr_reg;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/*
|
|
|
|
|
* An existing ALL_TG_PT=1 registration being released
|
|
|
|
|
* must also set ALL_TG_PT=1 in the incoming PROUT.
|
|
|
|
|
*/
|
|
|
|
|
if (pr_reg->pr_reg_all_tg_pt && !(all_tg_pt)) {
|
|
|
|
|
pr_err("SPC-3 PR UNREGISTER: ALL_TG_PT=1"
|
|
|
|
|
" registration exists, but ALL_TG_PT=1 bit not"
|
|
|
|
|
" present in received PROUT\n");
|
|
|
|
|
ret = TCM_INVALID_CDB_FIELD;
|
|
|
|
|
goto out_put_pr_reg;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/*
|
|
|
|
|
* Allocate APTPL metadata buffer used for UNREGISTER ops
|
|
|
|
|
*/
|
|
|
|
|
if (aptpl) {
|
|
|
|
|
pr_aptpl_buf = kzalloc(pr_tmpl->pr_aptpl_buf_len,
|
|
|
|
|
GFP_KERNEL);
|
|
|
|
|
if (!pr_aptpl_buf) {
|
|
|
|
|
pr_err("Unable to allocate"
|
|
|
|
|
" pr_aptpl_buf\n");
|
|
|
|
|
ret = TCM_LOGICAL_UNIT_COMMUNICATION_FAILURE;
|
|
|
|
|
goto out_put_pr_reg;
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
}
|
2012-11-06 20:24:09 +00:00
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/*
|
|
|
|
|
* sa_res_key=0 Unregister Reservation Key for registered I_T
|
|
|
|
|
* Nexus sa_res_key=1 Change Reservation Key for registered I_T
|
|
|
|
|
* Nexus.
|
|
|
|
|
*/
|
|
|
|
|
if (!sa_res_key) {
|
|
|
|
|
pr_holder = core_scsi3_check_implict_release(
|
|
|
|
|
cmd->se_dev, pr_reg);
|
|
|
|
|
if (pr_holder < 0) {
|
|
|
|
|
kfree(pr_aptpl_buf);
|
|
|
|
|
ret = TCM_RESERVATION_CONFLICT;
|
|
|
|
|
goto out_put_pr_reg;
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
}
|
2012-11-06 20:24:09 +00:00
|
|
|
|
|
|
|
|
|
spin_lock(&pr_tmpl->registration_lock);
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
/*
|
2012-11-06 20:24:09 +00:00
|
|
|
|
* Release all ALL_TG_PT=1 for the matching SCSI Initiator Port
|
|
|
|
|
* and matching pr_res_key.
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
*/
|
2012-11-06 20:24:09 +00:00
|
|
|
|
if (pr_reg->pr_reg_all_tg_pt) {
|
|
|
|
|
list_for_each_entry_safe(pr_reg_p, pr_reg_tmp,
|
|
|
|
|
&pr_tmpl->registration_list,
|
|
|
|
|
pr_reg_list) {
|
|
|
|
|
|
|
|
|
|
if (!pr_reg_p->pr_reg_all_tg_pt)
|
|
|
|
|
continue;
|
|
|
|
|
if (pr_reg_p->pr_res_key != res_key)
|
|
|
|
|
continue;
|
|
|
|
|
if (pr_reg == pr_reg_p)
|
|
|
|
|
continue;
|
|
|
|
|
if (strcmp(pr_reg->pr_reg_nacl->initiatorname,
|
|
|
|
|
pr_reg_p->pr_reg_nacl->initiatorname))
|
|
|
|
|
continue;
|
|
|
|
|
|
|
|
|
|
__core_scsi3_free_registration(dev,
|
|
|
|
|
pr_reg_p, NULL, 0);
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
}
|
|
|
|
|
}
|
2012-11-06 20:24:09 +00:00
|
|
|
|
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
/*
|
2012-11-06 20:24:09 +00:00
|
|
|
|
* Release the calling I_T Nexus registration now..
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
*/
|
2012-11-06 20:24:09 +00:00
|
|
|
|
__core_scsi3_free_registration(cmd->se_dev, pr_reg, NULL, 1);
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
|
2012-11-06 20:24:09 +00:00
|
|
|
|
/*
|
|
|
|
|
* From spc4r17, section 5.7.11.3 Unregistering
|
|
|
|
|
*
|
|
|
|
|
* If the persistent reservation is a registrants only
|
|
|
|
|
* type, the device server shall establish a unit
|
|
|
|
|
* attention condition for the initiator port associated
|
|
|
|
|
* with every registered I_T nexus except for the I_T
|
|
|
|
|
* nexus on which the PERSISTENT RESERVE OUT command was
|
|
|
|
|
* received, with the additional sense code set to
|
|
|
|
|
* RESERVATIONS RELEASED.
|
|
|
|
|
*/
|
|
|
|
|
if (pr_holder &&
|
|
|
|
|
(type == PR_TYPE_WRITE_EXCLUSIVE_REGONLY ||
|
|
|
|
|
type == PR_TYPE_EXCLUSIVE_ACCESS_REGONLY)) {
|
|
|
|
|
list_for_each_entry(pr_reg_p,
|
|
|
|
|
&pr_tmpl->registration_list,
|
|
|
|
|
pr_reg_list) {
|
|
|
|
|
|
|
|
|
|
core_scsi3_ua_allocate(
|
|
|
|
|
pr_reg_p->pr_reg_nacl,
|
|
|
|
|
pr_reg_p->pr_res_mapped_lun,
|
|
|
|
|
0x2A,
|
|
|
|
|
ASCQ_2AH_RESERVATIONS_RELEASED);
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
}
|
2012-11-06 20:24:09 +00:00
|
|
|
|
}
|
|
|
|
|
spin_unlock(&pr_tmpl->registration_lock);
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
|
2012-11-06 20:24:09 +00:00
|
|
|
|
if (!aptpl) {
|
|
|
|
|
pr_tmpl->pr_aptpl_active = 0;
|
|
|
|
|
core_scsi3_update_and_write_aptpl(dev, NULL, 0);
|
|
|
|
|
pr_debug("SPC-3 PR: Set APTPL Bit Deactivated"
|
|
|
|
|
" for UNREGISTER\n");
|
|
|
|
|
return 0;
|
|
|
|
|
}
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
|
2012-11-06 20:24:09 +00:00
|
|
|
|
if (!core_scsi3_update_and_write_aptpl(dev, &pr_aptpl_buf[0],
|
|
|
|
|
pr_tmpl->pr_aptpl_buf_len)) {
|
|
|
|
|
pr_tmpl->pr_aptpl_active = 1;
|
|
|
|
|
pr_debug("SPC-3 PR: Set APTPL Bit Activated"
|
|
|
|
|
" for UNREGISTER\n");
|
|
|
|
|
}
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
|
2012-11-06 20:24:09 +00:00
|
|
|
|
goto out_free_aptpl_buf;
|
|
|
|
|
}
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
|
2012-11-06 20:24:09 +00:00
|
|
|
|
/*
|
|
|
|
|
* Increment PRgeneration counter for struct se_device"
|
|
|
|
|
* upon a successful REGISTER, see spc4r17 section 6.3.2
|
|
|
|
|
* READ_KEYS service action.
|
|
|
|
|
*/
|
|
|
|
|
pr_reg->pr_res_generation = core_scsi3_pr_generation(cmd->se_dev);
|
|
|
|
|
pr_reg->pr_res_key = sa_res_key;
|
|
|
|
|
pr_debug("SPC-3 PR [%s] REGISTER%s: Changed Reservation"
|
|
|
|
|
" Key for %s to: 0x%016Lx PRgeneration:"
|
|
|
|
|
" 0x%08x\n", cmd->se_tfo->get_fabric_name(),
|
|
|
|
|
(ignore_key) ? "_AND_IGNORE_EXISTING_KEY" : "",
|
|
|
|
|
pr_reg->pr_reg_nacl->initiatorname,
|
|
|
|
|
pr_reg->pr_res_key, pr_reg->pr_res_generation);
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
|
2012-11-06 20:24:09 +00:00
|
|
|
|
if (!aptpl) {
|
|
|
|
|
pr_tmpl->pr_aptpl_active = 0;
|
|
|
|
|
core_scsi3_update_and_write_aptpl(dev, NULL, 0);
|
|
|
|
|
pr_debug("SPC-3 PR: Set APTPL Bit Deactivated"
|
|
|
|
|
" for REGISTER\n");
|
|
|
|
|
ret = 0;
|
|
|
|
|
goto out_put_pr_reg;
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
}
|
2012-11-06 20:24:09 +00:00
|
|
|
|
|
|
|
|
|
if (!core_scsi3_update_and_write_aptpl(dev, &pr_aptpl_buf[0],
|
|
|
|
|
pr_tmpl->pr_aptpl_buf_len)) {
|
|
|
|
|
pr_tmpl->pr_aptpl_active = 1;
|
|
|
|
|
pr_debug("SPC-3 PR: Set APTPL Bit Activated"
|
|
|
|
|
" for REGISTER\n");
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
out_free_aptpl_buf:
|
|
|
|
|
kfree(pr_aptpl_buf);
|
|
|
|
|
ret = 0;
|
|
|
|
|
out_put_pr_reg:
|
|
|
|
|
core_scsi3_put_pr_reg(pr_reg);
|
|
|
|
|
return ret;
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
unsigned char *core_scsi3_pr_dump_type(int type)
|
|
|
|
|
{
|
|
|
|
|
switch (type) {
|
|
|
|
|
case PR_TYPE_WRITE_EXCLUSIVE:
|
|
|
|
|
return "Write Exclusive Access";
|
|
|
|
|
case PR_TYPE_EXCLUSIVE_ACCESS:
|
|
|
|
|
return "Exclusive Access";
|
|
|
|
|
case PR_TYPE_WRITE_EXCLUSIVE_REGONLY:
|
|
|
|
|
return "Write Exclusive Access, Registrants Only";
|
|
|
|
|
case PR_TYPE_EXCLUSIVE_ACCESS_REGONLY:
|
|
|
|
|
return "Exclusive Access, Registrants Only";
|
|
|
|
|
case PR_TYPE_WRITE_EXCLUSIVE_ALLREG:
|
|
|
|
|
return "Write Exclusive Access, All Registrants";
|
|
|
|
|
case PR_TYPE_EXCLUSIVE_ACCESS_ALLREG:
|
|
|
|
|
return "Exclusive Access, All Registrants";
|
|
|
|
|
default:
|
|
|
|
|
break;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
return "Unknown SPC-3 PR Type";
|
|
|
|
|
}
|
|
|
|
|
|
2012-11-06 20:24:09 +00:00
|
|
|
|
static sense_reason_t
|
|
|
|
|
core_scsi3_pro_reserve(struct se_cmd *cmd, int type, int scope, u64 res_key)
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
{
|
2012-11-06 20:24:09 +00:00
|
|
|
|
struct se_device *dev = cmd->se_dev;
|
2011-07-19 08:55:10 +00:00
|
|
|
|
struct se_session *se_sess = cmd->se_sess;
|
|
|
|
|
struct se_lun *se_lun = cmd->se_lun;
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
struct t10_pr_registration *pr_reg, *pr_res_holder;
|
2012-10-08 04:03:19 +00:00
|
|
|
|
struct t10_reservation *pr_tmpl = &dev->t10_pr;
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
char i_buf[PR_REG_ISID_ID_LEN];
|
2012-11-06 20:24:09 +00:00
|
|
|
|
sense_reason_t ret;
|
|
|
|
|
int prf_isid;
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
|
|
|
|
|
memset(i_buf, 0, PR_REG_ISID_ID_LEN);
|
|
|
|
|
|
2011-06-08 17:36:43 +00:00
|
|
|
|
if (!se_sess || !se_lun) {
|
|
|
|
|
pr_err("SPC-3 PR: se_sess || struct se_lun is NULL!\n");
|
2012-11-06 20:24:09 +00:00
|
|
|
|
return TCM_LOGICAL_UNIT_COMMUNICATION_FAILURE;
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
}
|
|
|
|
|
/*
|
|
|
|
|
* Locate the existing *pr_reg via struct se_node_acl pointers
|
|
|
|
|
*/
|
2011-07-19 10:26:37 +00:00
|
|
|
|
pr_reg = core_scsi3_locate_pr_reg(cmd->se_dev, se_sess->se_node_acl,
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
se_sess);
|
2011-06-08 17:36:43 +00:00
|
|
|
|
if (!pr_reg) {
|
|
|
|
|
pr_err("SPC-3 PR: Unable to locate"
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
" PR_REGISTERED *pr_reg for RESERVE\n");
|
2012-11-06 20:24:09 +00:00
|
|
|
|
return TCM_LOGICAL_UNIT_COMMUNICATION_FAILURE;
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
}
|
|
|
|
|
/*
|
|
|
|
|
* From spc4r17 Section 5.7.9: Reserving:
|
|
|
|
|
*
|
|
|
|
|
* An application client creates a persistent reservation by issuing
|
|
|
|
|
* a PERSISTENT RESERVE OUT command with RESERVE service action through
|
|
|
|
|
* a registered I_T nexus with the following parameters:
|
|
|
|
|
* a) RESERVATION KEY set to the value of the reservation key that is
|
|
|
|
|
* registered with the logical unit for the I_T nexus; and
|
|
|
|
|
*/
|
|
|
|
|
if (res_key != pr_reg->pr_res_key) {
|
2011-06-08 17:36:43 +00:00
|
|
|
|
pr_err("SPC-3 PR RESERVE: Received res_key: 0x%016Lx"
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
" does not match existing SA REGISTER res_key:"
|
|
|
|
|
" 0x%016Lx\n", res_key, pr_reg->pr_res_key);
|
2012-11-06 20:24:09 +00:00
|
|
|
|
ret = TCM_RESERVATION_CONFLICT;
|
|
|
|
|
goto out_put_pr_reg;
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
}
|
|
|
|
|
/*
|
|
|
|
|
* From spc4r17 Section 5.7.9: Reserving:
|
|
|
|
|
*
|
|
|
|
|
* From above:
|
|
|
|
|
* b) TYPE field and SCOPE field set to the persistent reservation
|
|
|
|
|
* being created.
|
|
|
|
|
*
|
|
|
|
|
* Only one persistent reservation is allowed at a time per logical unit
|
|
|
|
|
* and that persistent reservation has a scope of LU_SCOPE.
|
|
|
|
|
*/
|
|
|
|
|
if (scope != PR_SCOPE_LU_SCOPE) {
|
2011-06-08 17:36:43 +00:00
|
|
|
|
pr_err("SPC-3 PR: Illegal SCOPE: 0x%02x\n", scope);
|
2012-11-06 20:24:09 +00:00
|
|
|
|
ret = TCM_INVALID_PARAMETER_LIST;
|
|
|
|
|
goto out_put_pr_reg;
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
}
|
|
|
|
|
/*
|
|
|
|
|
* See if we have an existing PR reservation holder pointer at
|
|
|
|
|
* struct se_device->dev_pr_res_holder in the form struct t10_pr_registration
|
|
|
|
|
* *pr_res_holder.
|
|
|
|
|
*/
|
|
|
|
|
spin_lock(&dev->dev_reservation_lock);
|
|
|
|
|
pr_res_holder = dev->dev_pr_res_holder;
|
2012-07-13 00:34:54 +00:00
|
|
|
|
if (pr_res_holder) {
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
/*
|
|
|
|
|
* From spc4r17 Section 5.7.9: Reserving:
|
|
|
|
|
*
|
|
|
|
|
* If the device server receives a PERSISTENT RESERVE OUT
|
|
|
|
|
* command from an I_T nexus other than a persistent reservation
|
|
|
|
|
* holder (see 5.7.10) that attempts to create a persistent
|
|
|
|
|
* reservation when a persistent reservation already exists for
|
|
|
|
|
* the logical unit, then the command shall be completed with
|
|
|
|
|
* RESERVATION CONFLICT status.
|
|
|
|
|
*/
|
|
|
|
|
if (pr_res_holder != pr_reg) {
|
|
|
|
|
struct se_node_acl *pr_res_nacl = pr_res_holder->pr_reg_nacl;
|
2011-06-08 17:36:43 +00:00
|
|
|
|
pr_err("SPC-3 PR: Attempted RESERVE from"
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
" [%s]: %s while reservation already held by"
|
|
|
|
|
" [%s]: %s, returning RESERVATION_CONFLICT\n",
|
2011-07-19 08:55:10 +00:00
|
|
|
|
cmd->se_tfo->get_fabric_name(),
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
se_sess->se_node_acl->initiatorname,
|
2011-07-19 08:55:10 +00:00
|
|
|
|
pr_res_nacl->se_tpg->se_tpg_tfo->get_fabric_name(),
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
pr_res_holder->pr_reg_nacl->initiatorname);
|
|
|
|
|
|
|
|
|
|
spin_unlock(&dev->dev_reservation_lock);
|
2012-11-06 20:24:09 +00:00
|
|
|
|
ret = TCM_RESERVATION_CONFLICT;
|
|
|
|
|
goto out_put_pr_reg;
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
}
|
|
|
|
|
/*
|
|
|
|
|
* From spc4r17 Section 5.7.9: Reserving:
|
|
|
|
|
*
|
|
|
|
|
* If a persistent reservation holder attempts to modify the
|
|
|
|
|
* type or scope of an existing persistent reservation, the
|
|
|
|
|
* command shall be completed with RESERVATION CONFLICT status.
|
|
|
|
|
*/
|
|
|
|
|
if ((pr_res_holder->pr_res_type != type) ||
|
|
|
|
|
(pr_res_holder->pr_res_scope != scope)) {
|
|
|
|
|
struct se_node_acl *pr_res_nacl = pr_res_holder->pr_reg_nacl;
|
2011-06-08 17:36:43 +00:00
|
|
|
|
pr_err("SPC-3 PR: Attempted RESERVE from"
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
" [%s]: %s trying to change TYPE and/or SCOPE,"
|
|
|
|
|
" while reservation already held by [%s]: %s,"
|
|
|
|
|
" returning RESERVATION_CONFLICT\n",
|
2011-07-19 08:55:10 +00:00
|
|
|
|
cmd->se_tfo->get_fabric_name(),
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
se_sess->se_node_acl->initiatorname,
|
2011-07-19 08:55:10 +00:00
|
|
|
|
pr_res_nacl->se_tpg->se_tpg_tfo->get_fabric_name(),
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
pr_res_holder->pr_reg_nacl->initiatorname);
|
|
|
|
|
|
|
|
|
|
spin_unlock(&dev->dev_reservation_lock);
|
2012-11-06 20:24:09 +00:00
|
|
|
|
ret = TCM_RESERVATION_CONFLICT;
|
|
|
|
|
goto out_put_pr_reg;
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
}
|
|
|
|
|
/*
|
|
|
|
|
* From spc4r17 Section 5.7.9: Reserving:
|
|
|
|
|
*
|
|
|
|
|
* If the device server receives a PERSISTENT RESERVE OUT
|
|
|
|
|
* command with RESERVE service action where the TYPE field and
|
|
|
|
|
* the SCOPE field contain the same values as the existing type
|
|
|
|
|
* and scope from a persistent reservation holder, it shall not
|
|
|
|
|
* make any change to the existing persistent reservation and
|
|
|
|
|
* shall completethe command with GOOD status.
|
|
|
|
|
*/
|
|
|
|
|
spin_unlock(&dev->dev_reservation_lock);
|
2012-11-06 20:24:09 +00:00
|
|
|
|
ret = 0;
|
|
|
|
|
goto out_put_pr_reg;
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
}
|
|
|
|
|
/*
|
|
|
|
|
* Otherwise, our *pr_reg becomes the PR reservation holder for said
|
|
|
|
|
* TYPE/SCOPE. Also set the received scope and type in *pr_reg.
|
|
|
|
|
*/
|
|
|
|
|
pr_reg->pr_res_scope = scope;
|
|
|
|
|
pr_reg->pr_res_type = type;
|
|
|
|
|
pr_reg->pr_res_holder = 1;
|
|
|
|
|
dev->dev_pr_res_holder = pr_reg;
|
|
|
|
|
prf_isid = core_pr_dump_initiator_port(pr_reg, &i_buf[0],
|
|
|
|
|
PR_REG_ISID_ID_LEN);
|
|
|
|
|
|
2011-06-08 17:36:43 +00:00
|
|
|
|
pr_debug("SPC-3 PR [%s] Service Action: RESERVE created new"
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
" reservation holder TYPE: %s ALL_TG_PT: %d\n",
|
2011-07-19 08:55:10 +00:00
|
|
|
|
cmd->se_tfo->get_fabric_name(), core_scsi3_pr_dump_type(type),
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
(pr_reg->pr_reg_all_tg_pt) ? 1 : 0);
|
2011-06-08 17:36:43 +00:00
|
|
|
|
pr_debug("SPC-3 PR [%s] RESERVE Node: %s%s\n",
|
2011-07-19 08:55:10 +00:00
|
|
|
|
cmd->se_tfo->get_fabric_name(),
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
se_sess->se_node_acl->initiatorname,
|
|
|
|
|
(prf_isid) ? &i_buf[0] : "");
|
|
|
|
|
spin_unlock(&dev->dev_reservation_lock);
|
|
|
|
|
|
|
|
|
|
if (pr_tmpl->pr_aptpl_active) {
|
2012-11-06 20:24:09 +00:00
|
|
|
|
if (!core_scsi3_update_and_write_aptpl(cmd->se_dev,
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
&pr_reg->pr_aptpl_buf[0],
|
2012-11-06 20:24:09 +00:00
|
|
|
|
pr_tmpl->pr_aptpl_buf_len)) {
|
2011-06-08 17:36:43 +00:00
|
|
|
|
pr_debug("SPC-3 PR: Updated APTPL metadata"
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
" for RESERVE\n");
|
2012-11-06 20:24:09 +00:00
|
|
|
|
}
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
}
|
|
|
|
|
|
2012-11-06 20:24:09 +00:00
|
|
|
|
ret = 0;
|
|
|
|
|
out_put_pr_reg:
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
core_scsi3_put_pr_reg(pr_reg);
|
2012-11-06 20:24:09 +00:00
|
|
|
|
return ret;
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
}
|
|
|
|
|
|
2012-11-06 20:24:09 +00:00
|
|
|
|
static sense_reason_t
|
|
|
|
|
core_scsi3_emulate_pro_reserve(struct se_cmd *cmd, int type, int scope,
|
|
|
|
|
u64 res_key)
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
{
|
|
|
|
|
switch (type) {
|
|
|
|
|
case PR_TYPE_WRITE_EXCLUSIVE:
|
|
|
|
|
case PR_TYPE_EXCLUSIVE_ACCESS:
|
|
|
|
|
case PR_TYPE_WRITE_EXCLUSIVE_REGONLY:
|
|
|
|
|
case PR_TYPE_EXCLUSIVE_ACCESS_REGONLY:
|
|
|
|
|
case PR_TYPE_WRITE_EXCLUSIVE_ALLREG:
|
|
|
|
|
case PR_TYPE_EXCLUSIVE_ACCESS_ALLREG:
|
2012-11-06 20:24:09 +00:00
|
|
|
|
return core_scsi3_pro_reserve(cmd, type, scope, res_key);
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
default:
|
2011-06-08 17:36:43 +00:00
|
|
|
|
pr_err("SPC-3 PR: Unknown Service Action RESERVE Type:"
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
" 0x%02x\n", type);
|
2012-11-06 20:24:09 +00:00
|
|
|
|
return TCM_INVALID_CDB_FIELD;
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/*
|
|
|
|
|
* Called with struct se_device->dev_reservation_lock held.
|
|
|
|
|
*/
|
|
|
|
|
static void __core_scsi3_complete_pro_release(
|
|
|
|
|
struct se_device *dev,
|
|
|
|
|
struct se_node_acl *se_nacl,
|
|
|
|
|
struct t10_pr_registration *pr_reg,
|
|
|
|
|
int explict)
|
|
|
|
|
{
|
|
|
|
|
struct target_core_fabric_ops *tfo = se_nacl->se_tpg->se_tpg_tfo;
|
|
|
|
|
char i_buf[PR_REG_ISID_ID_LEN];
|
|
|
|
|
int prf_isid;
|
|
|
|
|
|
|
|
|
|
memset(i_buf, 0, PR_REG_ISID_ID_LEN);
|
|
|
|
|
prf_isid = core_pr_dump_initiator_port(pr_reg, &i_buf[0],
|
|
|
|
|
PR_REG_ISID_ID_LEN);
|
|
|
|
|
/*
|
|
|
|
|
* Go ahead and release the current PR reservation holder.
|
|
|
|
|
*/
|
|
|
|
|
dev->dev_pr_res_holder = NULL;
|
|
|
|
|
|
2011-06-08 17:36:43 +00:00
|
|
|
|
pr_debug("SPC-3 PR [%s] Service Action: %s RELEASE cleared"
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
" reservation holder TYPE: %s ALL_TG_PT: %d\n",
|
|
|
|
|
tfo->get_fabric_name(), (explict) ? "explict" : "implict",
|
|
|
|
|
core_scsi3_pr_dump_type(pr_reg->pr_res_type),
|
|
|
|
|
(pr_reg->pr_reg_all_tg_pt) ? 1 : 0);
|
2011-06-08 17:36:43 +00:00
|
|
|
|
pr_debug("SPC-3 PR [%s] RELEASE Node: %s%s\n",
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
tfo->get_fabric_name(), se_nacl->initiatorname,
|
|
|
|
|
(prf_isid) ? &i_buf[0] : "");
|
|
|
|
|
/*
|
|
|
|
|
* Clear TYPE and SCOPE for the next PROUT Service Action: RESERVE
|
|
|
|
|
*/
|
|
|
|
|
pr_reg->pr_res_holder = pr_reg->pr_res_type = pr_reg->pr_res_scope = 0;
|
|
|
|
|
}
|
|
|
|
|
|
2012-11-06 20:24:09 +00:00
|
|
|
|
static sense_reason_t
|
|
|
|
|
core_scsi3_emulate_pro_release(struct se_cmd *cmd, int type, int scope,
|
|
|
|
|
u64 res_key)
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
{
|
|
|
|
|
struct se_device *dev = cmd->se_dev;
|
2011-07-19 08:55:10 +00:00
|
|
|
|
struct se_session *se_sess = cmd->se_sess;
|
|
|
|
|
struct se_lun *se_lun = cmd->se_lun;
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
struct t10_pr_registration *pr_reg, *pr_reg_p, *pr_res_holder;
|
2012-10-08 04:03:19 +00:00
|
|
|
|
struct t10_reservation *pr_tmpl = &dev->t10_pr;
|
2012-11-06 20:24:09 +00:00
|
|
|
|
int all_reg = 0;
|
|
|
|
|
sense_reason_t ret = 0;
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
|
2011-06-08 17:36:43 +00:00
|
|
|
|
if (!se_sess || !se_lun) {
|
|
|
|
|
pr_err("SPC-3 PR: se_sess || struct se_lun is NULL!\n");
|
2012-11-06 20:24:09 +00:00
|
|
|
|
return TCM_LOGICAL_UNIT_COMMUNICATION_FAILURE;
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
}
|
|
|
|
|
/*
|
|
|
|
|
* Locate the existing *pr_reg via struct se_node_acl pointers
|
|
|
|
|
*/
|
|
|
|
|
pr_reg = core_scsi3_locate_pr_reg(dev, se_sess->se_node_acl, se_sess);
|
2011-06-08 17:36:43 +00:00
|
|
|
|
if (!pr_reg) {
|
|
|
|
|
pr_err("SPC-3 PR: Unable to locate"
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
" PR_REGISTERED *pr_reg for RELEASE\n");
|
2012-11-06 20:24:09 +00:00
|
|
|
|
return TCM_LOGICAL_UNIT_COMMUNICATION_FAILURE;
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
}
|
|
|
|
|
/*
|
|
|
|
|
* From spc4r17 Section 5.7.11.2 Releasing:
|
|
|
|
|
*
|
|
|
|
|
* If there is no persistent reservation or in response to a persistent
|
|
|
|
|
* reservation release request from a registered I_T nexus that is not a
|
|
|
|
|
* persistent reservation holder (see 5.7.10), the device server shall
|
|
|
|
|
* do the following:
|
|
|
|
|
*
|
|
|
|
|
* a) Not release the persistent reservation, if any;
|
|
|
|
|
* b) Not remove any registrations; and
|
|
|
|
|
* c) Complete the command with GOOD status.
|
|
|
|
|
*/
|
|
|
|
|
spin_lock(&dev->dev_reservation_lock);
|
|
|
|
|
pr_res_holder = dev->dev_pr_res_holder;
|
2011-06-08 17:36:43 +00:00
|
|
|
|
if (!pr_res_holder) {
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
/*
|
|
|
|
|
* No persistent reservation, return GOOD status.
|
|
|
|
|
*/
|
|
|
|
|
spin_unlock(&dev->dev_reservation_lock);
|
2012-11-06 23:46:25 +00:00
|
|
|
|
goto out_put_pr_reg;
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
}
|
|
|
|
|
if ((pr_res_holder->pr_res_type == PR_TYPE_WRITE_EXCLUSIVE_ALLREG) ||
|
|
|
|
|
(pr_res_holder->pr_res_type == PR_TYPE_EXCLUSIVE_ACCESS_ALLREG))
|
|
|
|
|
all_reg = 1;
|
|
|
|
|
|
|
|
|
|
if ((all_reg == 0) && (pr_res_holder != pr_reg)) {
|
|
|
|
|
/*
|
|
|
|
|
* Non 'All Registrants' PR Type cases..
|
|
|
|
|
* Release request from a registered I_T nexus that is not a
|
|
|
|
|
* persistent reservation holder. return GOOD status.
|
|
|
|
|
*/
|
|
|
|
|
spin_unlock(&dev->dev_reservation_lock);
|
2012-11-06 20:24:09 +00:00
|
|
|
|
goto out_put_pr_reg;
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
}
|
2012-11-06 20:24:09 +00:00
|
|
|
|
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
/*
|
|
|
|
|
* From spc4r17 Section 5.7.11.2 Releasing:
|
|
|
|
|
*
|
|
|
|
|
* Only the persistent reservation holder (see 5.7.10) is allowed to
|
|
|
|
|
* release a persistent reservation.
|
|
|
|
|
*
|
|
|
|
|
* An application client releases the persistent reservation by issuing
|
|
|
|
|
* a PERSISTENT RESERVE OUT command with RELEASE service action through
|
|
|
|
|
* an I_T nexus that is a persistent reservation holder with the
|
|
|
|
|
* following parameters:
|
|
|
|
|
*
|
|
|
|
|
* a) RESERVATION KEY field set to the value of the reservation key
|
|
|
|
|
* that is registered with the logical unit for the I_T nexus;
|
|
|
|
|
*/
|
|
|
|
|
if (res_key != pr_reg->pr_res_key) {
|
2011-06-08 17:36:43 +00:00
|
|
|
|
pr_err("SPC-3 PR RELEASE: Received res_key: 0x%016Lx"
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
" does not match existing SA REGISTER res_key:"
|
|
|
|
|
" 0x%016Lx\n", res_key, pr_reg->pr_res_key);
|
|
|
|
|
spin_unlock(&dev->dev_reservation_lock);
|
2012-11-06 20:24:09 +00:00
|
|
|
|
ret = TCM_RESERVATION_CONFLICT;
|
|
|
|
|
goto out_put_pr_reg;
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
}
|
|
|
|
|
/*
|
|
|
|
|
* From spc4r17 Section 5.7.11.2 Releasing and above:
|
|
|
|
|
*
|
|
|
|
|
* b) TYPE field and SCOPE field set to match the persistent
|
|
|
|
|
* reservation being released.
|
|
|
|
|
*/
|
|
|
|
|
if ((pr_res_holder->pr_res_type != type) ||
|
|
|
|
|
(pr_res_holder->pr_res_scope != scope)) {
|
|
|
|
|
struct se_node_acl *pr_res_nacl = pr_res_holder->pr_reg_nacl;
|
2011-06-08 17:36:43 +00:00
|
|
|
|
pr_err("SPC-3 PR RELEASE: Attempted to release"
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
" reservation from [%s]: %s with different TYPE "
|
|
|
|
|
"and/or SCOPE while reservation already held by"
|
|
|
|
|
" [%s]: %s, returning RESERVATION_CONFLICT\n",
|
2011-07-19 08:55:10 +00:00
|
|
|
|
cmd->se_tfo->get_fabric_name(),
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
se_sess->se_node_acl->initiatorname,
|
2011-07-19 08:55:10 +00:00
|
|
|
|
pr_res_nacl->se_tpg->se_tpg_tfo->get_fabric_name(),
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
pr_res_holder->pr_reg_nacl->initiatorname);
|
|
|
|
|
|
|
|
|
|
spin_unlock(&dev->dev_reservation_lock);
|
2012-11-06 20:24:09 +00:00
|
|
|
|
ret = TCM_RESERVATION_CONFLICT;
|
|
|
|
|
goto out_put_pr_reg;
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
}
|
|
|
|
|
/*
|
|
|
|
|
* In response to a persistent reservation release request from the
|
|
|
|
|
* persistent reservation holder the device server shall perform a
|
|
|
|
|
* release by doing the following as an uninterrupted series of actions:
|
|
|
|
|
* a) Release the persistent reservation;
|
|
|
|
|
* b) Not remove any registration(s);
|
|
|
|
|
* c) If the released persistent reservation is a registrants only type
|
|
|
|
|
* or all registrants type persistent reservation,
|
|
|
|
|
* the device server shall establish a unit attention condition for
|
|
|
|
|
* the initiator port associated with every regis-
|
|
|
|
|
* tered I_T nexus other than I_T nexus on which the PERSISTENT
|
|
|
|
|
* RESERVE OUT command with RELEASE service action was received,
|
|
|
|
|
* with the additional sense code set to RESERVATIONS RELEASED; and
|
|
|
|
|
* d) If the persistent reservation is of any other type, the device
|
|
|
|
|
* server shall not establish a unit attention condition.
|
|
|
|
|
*/
|
|
|
|
|
__core_scsi3_complete_pro_release(dev, se_sess->se_node_acl,
|
|
|
|
|
pr_reg, 1);
|
|
|
|
|
|
|
|
|
|
spin_unlock(&dev->dev_reservation_lock);
|
|
|
|
|
|
|
|
|
|
if ((type != PR_TYPE_WRITE_EXCLUSIVE_REGONLY) &&
|
|
|
|
|
(type != PR_TYPE_EXCLUSIVE_ACCESS_REGONLY) &&
|
|
|
|
|
(type != PR_TYPE_WRITE_EXCLUSIVE_ALLREG) &&
|
|
|
|
|
(type != PR_TYPE_EXCLUSIVE_ACCESS_ALLREG)) {
|
|
|
|
|
/*
|
|
|
|
|
* If no UNIT ATTENTION conditions will be established for
|
|
|
|
|
* PR_TYPE_WRITE_EXCLUSIVE or PR_TYPE_EXCLUSIVE_ACCESS
|
|
|
|
|
* go ahead and check for APTPL=1 update+write below
|
|
|
|
|
*/
|
|
|
|
|
goto write_aptpl;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
spin_lock(&pr_tmpl->registration_lock);
|
|
|
|
|
list_for_each_entry(pr_reg_p, &pr_tmpl->registration_list,
|
|
|
|
|
pr_reg_list) {
|
|
|
|
|
/*
|
|
|
|
|
* Do not establish a UNIT ATTENTION condition
|
|
|
|
|
* for the calling I_T Nexus
|
|
|
|
|
*/
|
|
|
|
|
if (pr_reg_p == pr_reg)
|
|
|
|
|
continue;
|
|
|
|
|
|
|
|
|
|
core_scsi3_ua_allocate(pr_reg_p->pr_reg_nacl,
|
|
|
|
|
pr_reg_p->pr_res_mapped_lun,
|
|
|
|
|
0x2A, ASCQ_2AH_RESERVATIONS_RELEASED);
|
|
|
|
|
}
|
|
|
|
|
spin_unlock(&pr_tmpl->registration_lock);
|
|
|
|
|
|
|
|
|
|
write_aptpl:
|
|
|
|
|
if (pr_tmpl->pr_aptpl_active) {
|
2012-11-06 20:24:09 +00:00
|
|
|
|
if (!core_scsi3_update_and_write_aptpl(cmd->se_dev,
|
|
|
|
|
&pr_reg->pr_aptpl_buf[0], pr_tmpl->pr_aptpl_buf_len)) {
|
2011-06-08 17:36:43 +00:00
|
|
|
|
pr_debug("SPC-3 PR: Updated APTPL metadata for RELEASE\n");
|
2012-11-06 20:24:09 +00:00
|
|
|
|
}
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
}
|
2012-11-06 20:24:09 +00:00
|
|
|
|
out_put_pr_reg:
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
core_scsi3_put_pr_reg(pr_reg);
|
2012-11-06 20:24:09 +00:00
|
|
|
|
return ret;
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
}
|
|
|
|
|
|
2012-11-06 20:24:09 +00:00
|
|
|
|
static sense_reason_t
|
|
|
|
|
core_scsi3_emulate_pro_clear(struct se_cmd *cmd, u64 res_key)
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
{
|
|
|
|
|
struct se_device *dev = cmd->se_dev;
|
|
|
|
|
struct se_node_acl *pr_reg_nacl;
|
2011-07-19 08:55:10 +00:00
|
|
|
|
struct se_session *se_sess = cmd->se_sess;
|
2012-10-08 04:03:19 +00:00
|
|
|
|
struct t10_reservation *pr_tmpl = &dev->t10_pr;
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
struct t10_pr_registration *pr_reg, *pr_reg_tmp, *pr_reg_n, *pr_res_holder;
|
|
|
|
|
u32 pr_res_mapped_lun = 0;
|
|
|
|
|
int calling_it_nexus = 0;
|
|
|
|
|
/*
|
|
|
|
|
* Locate the existing *pr_reg via struct se_node_acl pointers
|
|
|
|
|
*/
|
2011-07-19 10:26:37 +00:00
|
|
|
|
pr_reg_n = core_scsi3_locate_pr_reg(cmd->se_dev,
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
se_sess->se_node_acl, se_sess);
|
2011-06-08 17:36:43 +00:00
|
|
|
|
if (!pr_reg_n) {
|
|
|
|
|
pr_err("SPC-3 PR: Unable to locate"
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
" PR_REGISTERED *pr_reg for CLEAR\n");
|
2012-11-06 20:24:09 +00:00
|
|
|
|
return TCM_LOGICAL_UNIT_COMMUNICATION_FAILURE;
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
}
|
|
|
|
|
/*
|
|
|
|
|
* From spc4r17 section 5.7.11.6, Clearing:
|
|
|
|
|
*
|
|
|
|
|
* Any application client may release the persistent reservation and
|
|
|
|
|
* remove all registrations from a device server by issuing a
|
|
|
|
|
* PERSISTENT RESERVE OUT command with CLEAR service action through a
|
|
|
|
|
* registered I_T nexus with the following parameter:
|
|
|
|
|
*
|
|
|
|
|
* a) RESERVATION KEY field set to the value of the reservation key
|
|
|
|
|
* that is registered with the logical unit for the I_T nexus.
|
|
|
|
|
*/
|
|
|
|
|
if (res_key != pr_reg_n->pr_res_key) {
|
2011-06-08 17:36:43 +00:00
|
|
|
|
pr_err("SPC-3 PR REGISTER: Received"
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
" res_key: 0x%016Lx does not match"
|
|
|
|
|
" existing SA REGISTER res_key:"
|
|
|
|
|
" 0x%016Lx\n", res_key, pr_reg_n->pr_res_key);
|
|
|
|
|
core_scsi3_put_pr_reg(pr_reg_n);
|
2012-11-06 20:24:09 +00:00
|
|
|
|
return TCM_RESERVATION_CONFLICT;
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
}
|
|
|
|
|
/*
|
|
|
|
|
* a) Release the persistent reservation, if any;
|
|
|
|
|
*/
|
|
|
|
|
spin_lock(&dev->dev_reservation_lock);
|
|
|
|
|
pr_res_holder = dev->dev_pr_res_holder;
|
|
|
|
|
if (pr_res_holder) {
|
|
|
|
|
struct se_node_acl *pr_res_nacl = pr_res_holder->pr_reg_nacl;
|
|
|
|
|
__core_scsi3_complete_pro_release(dev, pr_res_nacl,
|
|
|
|
|
pr_res_holder, 0);
|
|
|
|
|
}
|
|
|
|
|
spin_unlock(&dev->dev_reservation_lock);
|
|
|
|
|
/*
|
|
|
|
|
* b) Remove all registration(s) (see spc4r17 5.7.7);
|
|
|
|
|
*/
|
|
|
|
|
spin_lock(&pr_tmpl->registration_lock);
|
|
|
|
|
list_for_each_entry_safe(pr_reg, pr_reg_tmp,
|
|
|
|
|
&pr_tmpl->registration_list, pr_reg_list) {
|
|
|
|
|
|
|
|
|
|
calling_it_nexus = (pr_reg_n == pr_reg) ? 1 : 0;
|
|
|
|
|
pr_reg_nacl = pr_reg->pr_reg_nacl;
|
|
|
|
|
pr_res_mapped_lun = pr_reg->pr_res_mapped_lun;
|
|
|
|
|
__core_scsi3_free_registration(dev, pr_reg, NULL,
|
|
|
|
|
calling_it_nexus);
|
|
|
|
|
/*
|
|
|
|
|
* e) Establish a unit attention condition for the initiator
|
|
|
|
|
* port associated with every registered I_T nexus other
|
|
|
|
|
* than the I_T nexus on which the PERSISTENT RESERVE OUT
|
|
|
|
|
* command with CLEAR service action was received, with the
|
|
|
|
|
* additional sense code set to RESERVATIONS PREEMPTED.
|
|
|
|
|
*/
|
2011-06-08 17:36:43 +00:00
|
|
|
|
if (!calling_it_nexus)
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
core_scsi3_ua_allocate(pr_reg_nacl, pr_res_mapped_lun,
|
|
|
|
|
0x2A, ASCQ_2AH_RESERVATIONS_PREEMPTED);
|
|
|
|
|
}
|
|
|
|
|
spin_unlock(&pr_tmpl->registration_lock);
|
|
|
|
|
|
2011-06-08 17:36:43 +00:00
|
|
|
|
pr_debug("SPC-3 PR [%s] Service Action: CLEAR complete\n",
|
2011-07-19 08:55:10 +00:00
|
|
|
|
cmd->se_tfo->get_fabric_name());
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
|
|
|
|
|
if (pr_tmpl->pr_aptpl_active) {
|
2011-07-19 10:26:37 +00:00
|
|
|
|
core_scsi3_update_and_write_aptpl(cmd->se_dev, NULL, 0);
|
2011-06-08 17:36:43 +00:00
|
|
|
|
pr_debug("SPC-3 PR: Updated APTPL metadata"
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
" for CLEAR\n");
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
core_scsi3_pr_generation(dev);
|
|
|
|
|
return 0;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/*
|
|
|
|
|
* Called with struct se_device->dev_reservation_lock held.
|
|
|
|
|
*/
|
|
|
|
|
static void __core_scsi3_complete_pro_preempt(
|
|
|
|
|
struct se_device *dev,
|
|
|
|
|
struct t10_pr_registration *pr_reg,
|
|
|
|
|
struct list_head *preempt_and_abort_list,
|
|
|
|
|
int type,
|
|
|
|
|
int scope,
|
|
|
|
|
int abort)
|
|
|
|
|
{
|
|
|
|
|
struct se_node_acl *nacl = pr_reg->pr_reg_nacl;
|
|
|
|
|
struct target_core_fabric_ops *tfo = nacl->se_tpg->se_tpg_tfo;
|
|
|
|
|
char i_buf[PR_REG_ISID_ID_LEN];
|
|
|
|
|
int prf_isid;
|
|
|
|
|
|
|
|
|
|
memset(i_buf, 0, PR_REG_ISID_ID_LEN);
|
|
|
|
|
prf_isid = core_pr_dump_initiator_port(pr_reg, &i_buf[0],
|
|
|
|
|
PR_REG_ISID_ID_LEN);
|
|
|
|
|
/*
|
|
|
|
|
* Do an implict RELEASE of the existing reservation.
|
|
|
|
|
*/
|
|
|
|
|
if (dev->dev_pr_res_holder)
|
|
|
|
|
__core_scsi3_complete_pro_release(dev, nacl,
|
|
|
|
|
dev->dev_pr_res_holder, 0);
|
|
|
|
|
|
|
|
|
|
dev->dev_pr_res_holder = pr_reg;
|
|
|
|
|
pr_reg->pr_res_holder = 1;
|
|
|
|
|
pr_reg->pr_res_type = type;
|
|
|
|
|
pr_reg->pr_res_scope = scope;
|
|
|
|
|
|
2011-06-08 17:36:43 +00:00
|
|
|
|
pr_debug("SPC-3 PR [%s] Service Action: PREEMPT%s created new"
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
" reservation holder TYPE: %s ALL_TG_PT: %d\n",
|
|
|
|
|
tfo->get_fabric_name(), (abort) ? "_AND_ABORT" : "",
|
|
|
|
|
core_scsi3_pr_dump_type(type),
|
|
|
|
|
(pr_reg->pr_reg_all_tg_pt) ? 1 : 0);
|
2011-06-08 17:36:43 +00:00
|
|
|
|
pr_debug("SPC-3 PR [%s] PREEMPT%s from Node: %s%s\n",
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
tfo->get_fabric_name(), (abort) ? "_AND_ABORT" : "",
|
|
|
|
|
nacl->initiatorname, (prf_isid) ? &i_buf[0] : "");
|
|
|
|
|
/*
|
|
|
|
|
* For PREEMPT_AND_ABORT, add the preempting reservation's
|
|
|
|
|
* struct t10_pr_registration to the list that will be compared
|
|
|
|
|
* against received CDBs..
|
|
|
|
|
*/
|
|
|
|
|
if (preempt_and_abort_list)
|
|
|
|
|
list_add_tail(&pr_reg->pr_reg_abort_list,
|
|
|
|
|
preempt_and_abort_list);
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
static void core_scsi3_release_preempt_and_abort(
|
|
|
|
|
struct list_head *preempt_and_abort_list,
|
|
|
|
|
struct t10_pr_registration *pr_reg_holder)
|
|
|
|
|
{
|
|
|
|
|
struct t10_pr_registration *pr_reg, *pr_reg_tmp;
|
|
|
|
|
|
|
|
|
|
list_for_each_entry_safe(pr_reg, pr_reg_tmp, preempt_and_abort_list,
|
|
|
|
|
pr_reg_abort_list) {
|
|
|
|
|
|
|
|
|
|
list_del(&pr_reg->pr_reg_abort_list);
|
|
|
|
|
if (pr_reg_holder == pr_reg)
|
|
|
|
|
continue;
|
|
|
|
|
if (pr_reg->pr_res_holder) {
|
2011-06-08 17:36:43 +00:00
|
|
|
|
pr_warn("pr_reg->pr_res_holder still set\n");
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
continue;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
pr_reg->pr_reg_deve = NULL;
|
|
|
|
|
pr_reg->pr_reg_nacl = NULL;
|
|
|
|
|
kfree(pr_reg->pr_aptpl_buf);
|
|
|
|
|
kmem_cache_free(t10_pr_reg_cache, pr_reg);
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
|
2012-11-06 20:24:09 +00:00
|
|
|
|
static sense_reason_t
|
|
|
|
|
core_scsi3_pro_preempt(struct se_cmd *cmd, int type, int scope, u64 res_key,
|
|
|
|
|
u64 sa_res_key, int abort)
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
{
|
2011-07-19 10:26:37 +00:00
|
|
|
|
struct se_device *dev = cmd->se_dev;
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
struct se_node_acl *pr_reg_nacl;
|
2011-07-19 08:55:10 +00:00
|
|
|
|
struct se_session *se_sess = cmd->se_sess;
|
2012-01-12 18:41:18 +00:00
|
|
|
|
LIST_HEAD(preempt_and_abort_list);
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
struct t10_pr_registration *pr_reg, *pr_reg_tmp, *pr_reg_n, *pr_res_holder;
|
2012-10-08 04:03:19 +00:00
|
|
|
|
struct t10_reservation *pr_tmpl = &dev->t10_pr;
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
u32 pr_res_mapped_lun = 0;
|
|
|
|
|
int all_reg = 0, calling_it_nexus = 0, released_regs = 0;
|
2012-11-06 20:24:09 +00:00
|
|
|
|
int prh_type = 0, prh_scope = 0;
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
|
2012-11-06 20:24:09 +00:00
|
|
|
|
if (!se_sess)
|
|
|
|
|
return TCM_LOGICAL_UNIT_COMMUNICATION_FAILURE;
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
|
2011-07-19 10:26:37 +00:00
|
|
|
|
pr_reg_n = core_scsi3_locate_pr_reg(cmd->se_dev, se_sess->se_node_acl,
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
se_sess);
|
2011-06-08 17:36:43 +00:00
|
|
|
|
if (!pr_reg_n) {
|
|
|
|
|
pr_err("SPC-3 PR: Unable to locate"
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
" PR_REGISTERED *pr_reg for PREEMPT%s\n",
|
|
|
|
|
(abort) ? "_AND_ABORT" : "");
|
2012-11-06 20:24:09 +00:00
|
|
|
|
return TCM_RESERVATION_CONFLICT;
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
}
|
|
|
|
|
if (pr_reg_n->pr_res_key != res_key) {
|
|
|
|
|
core_scsi3_put_pr_reg(pr_reg_n);
|
2012-11-06 20:24:09 +00:00
|
|
|
|
return TCM_RESERVATION_CONFLICT;
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
}
|
|
|
|
|
if (scope != PR_SCOPE_LU_SCOPE) {
|
2011-06-08 17:36:43 +00:00
|
|
|
|
pr_err("SPC-3 PR: Illegal SCOPE: 0x%02x\n", scope);
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
core_scsi3_put_pr_reg(pr_reg_n);
|
2012-11-06 20:24:09 +00:00
|
|
|
|
return TCM_INVALID_PARAMETER_LIST;
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
spin_lock(&dev->dev_reservation_lock);
|
|
|
|
|
pr_res_holder = dev->dev_pr_res_holder;
|
|
|
|
|
if (pr_res_holder &&
|
|
|
|
|
((pr_res_holder->pr_res_type == PR_TYPE_WRITE_EXCLUSIVE_ALLREG) ||
|
|
|
|
|
(pr_res_holder->pr_res_type == PR_TYPE_EXCLUSIVE_ACCESS_ALLREG)))
|
|
|
|
|
all_reg = 1;
|
|
|
|
|
|
2011-06-08 17:36:43 +00:00
|
|
|
|
if (!all_reg && !sa_res_key) {
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
spin_unlock(&dev->dev_reservation_lock);
|
|
|
|
|
core_scsi3_put_pr_reg(pr_reg_n);
|
2012-11-06 20:24:09 +00:00
|
|
|
|
return TCM_INVALID_PARAMETER_LIST;
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
}
|
|
|
|
|
/*
|
|
|
|
|
* From spc4r17, section 5.7.11.4.4 Removing Registrations:
|
|
|
|
|
*
|
|
|
|
|
* If the SERVICE ACTION RESERVATION KEY field does not identify a
|
|
|
|
|
* persistent reservation holder or there is no persistent reservation
|
|
|
|
|
* holder (i.e., there is no persistent reservation), then the device
|
|
|
|
|
* server shall perform a preempt by doing the following in an
|
|
|
|
|
* uninterrupted series of actions. (See below..)
|
|
|
|
|
*/
|
2011-06-08 17:36:43 +00:00
|
|
|
|
if (!pr_res_holder || (pr_res_holder->pr_res_key != sa_res_key)) {
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
/*
|
|
|
|
|
* No existing or SA Reservation Key matching reservations..
|
|
|
|
|
*
|
|
|
|
|
* PROUT SA PREEMPT with All Registrant type reservations are
|
|
|
|
|
* allowed to be processed without a matching SA Reservation Key
|
|
|
|
|
*/
|
|
|
|
|
spin_lock(&pr_tmpl->registration_lock);
|
|
|
|
|
list_for_each_entry_safe(pr_reg, pr_reg_tmp,
|
|
|
|
|
&pr_tmpl->registration_list, pr_reg_list) {
|
|
|
|
|
/*
|
|
|
|
|
* Removing of registrations in non all registrants
|
|
|
|
|
* type reservations without a matching SA reservation
|
|
|
|
|
* key.
|
|
|
|
|
*
|
|
|
|
|
* a) Remove the registrations for all I_T nexuses
|
|
|
|
|
* specified by the SERVICE ACTION RESERVATION KEY
|
|
|
|
|
* field;
|
|
|
|
|
* b) Ignore the contents of the SCOPE and TYPE fields;
|
|
|
|
|
* c) Process tasks as defined in 5.7.1; and
|
|
|
|
|
* d) Establish a unit attention condition for the
|
|
|
|
|
* initiator port associated with every I_T nexus
|
|
|
|
|
* that lost its registration other than the I_T
|
|
|
|
|
* nexus on which the PERSISTENT RESERVE OUT command
|
|
|
|
|
* was received, with the additional sense code set
|
|
|
|
|
* to REGISTRATIONS PREEMPTED.
|
|
|
|
|
*/
|
2011-06-08 17:36:43 +00:00
|
|
|
|
if (!all_reg) {
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
if (pr_reg->pr_res_key != sa_res_key)
|
|
|
|
|
continue;
|
|
|
|
|
|
|
|
|
|
calling_it_nexus = (pr_reg_n == pr_reg) ? 1 : 0;
|
|
|
|
|
pr_reg_nacl = pr_reg->pr_reg_nacl;
|
|
|
|
|
pr_res_mapped_lun = pr_reg->pr_res_mapped_lun;
|
|
|
|
|
__core_scsi3_free_registration(dev, pr_reg,
|
|
|
|
|
(abort) ? &preempt_and_abort_list :
|
|
|
|
|
NULL, calling_it_nexus);
|
|
|
|
|
released_regs++;
|
|
|
|
|
} else {
|
|
|
|
|
/*
|
|
|
|
|
* Case for any existing all registrants type
|
|
|
|
|
* reservation, follow logic in spc4r17 section
|
|
|
|
|
* 5.7.11.4 Preempting, Table 52 and Figure 7.
|
|
|
|
|
*
|
|
|
|
|
* For a ZERO SA Reservation key, release
|
|
|
|
|
* all other registrations and do an implict
|
|
|
|
|
* release of active persistent reservation.
|
|
|
|
|
*
|
|
|
|
|
* For a non-ZERO SA Reservation key, only
|
|
|
|
|
* release the matching reservation key from
|
|
|
|
|
* registrations.
|
|
|
|
|
*/
|
|
|
|
|
if ((sa_res_key) &&
|
|
|
|
|
(pr_reg->pr_res_key != sa_res_key))
|
|
|
|
|
continue;
|
|
|
|
|
|
|
|
|
|
calling_it_nexus = (pr_reg_n == pr_reg) ? 1 : 0;
|
|
|
|
|
if (calling_it_nexus)
|
|
|
|
|
continue;
|
|
|
|
|
|
|
|
|
|
pr_reg_nacl = pr_reg->pr_reg_nacl;
|
|
|
|
|
pr_res_mapped_lun = pr_reg->pr_res_mapped_lun;
|
|
|
|
|
__core_scsi3_free_registration(dev, pr_reg,
|
|
|
|
|
(abort) ? &preempt_and_abort_list :
|
|
|
|
|
NULL, 0);
|
|
|
|
|
released_regs++;
|
|
|
|
|
}
|
2011-06-08 17:36:43 +00:00
|
|
|
|
if (!calling_it_nexus)
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
core_scsi3_ua_allocate(pr_reg_nacl,
|
|
|
|
|
pr_res_mapped_lun, 0x2A,
|
2012-01-04 01:12:57 +00:00
|
|
|
|
ASCQ_2AH_REGISTRATIONS_PREEMPTED);
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
}
|
|
|
|
|
spin_unlock(&pr_tmpl->registration_lock);
|
|
|
|
|
/*
|
|
|
|
|
* If a PERSISTENT RESERVE OUT with a PREEMPT service action or
|
|
|
|
|
* a PREEMPT AND ABORT service action sets the SERVICE ACTION
|
|
|
|
|
* RESERVATION KEY field to a value that does not match any
|
|
|
|
|
* registered reservation key, then the device server shall
|
|
|
|
|
* complete the command with RESERVATION CONFLICT status.
|
|
|
|
|
*/
|
2011-06-08 17:36:43 +00:00
|
|
|
|
if (!released_regs) {
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
spin_unlock(&dev->dev_reservation_lock);
|
|
|
|
|
core_scsi3_put_pr_reg(pr_reg_n);
|
2012-11-06 20:24:09 +00:00
|
|
|
|
return TCM_RESERVATION_CONFLICT;
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
}
|
|
|
|
|
/*
|
|
|
|
|
* For an existing all registrants type reservation
|
|
|
|
|
* with a zero SA rservation key, preempt the existing
|
|
|
|
|
* reservation with the new PR type and scope.
|
|
|
|
|
*/
|
|
|
|
|
if (pr_res_holder && all_reg && !(sa_res_key)) {
|
|
|
|
|
__core_scsi3_complete_pro_preempt(dev, pr_reg_n,
|
|
|
|
|
(abort) ? &preempt_and_abort_list : NULL,
|
|
|
|
|
type, scope, abort);
|
|
|
|
|
|
|
|
|
|
if (abort)
|
|
|
|
|
core_scsi3_release_preempt_and_abort(
|
|
|
|
|
&preempt_and_abort_list, pr_reg_n);
|
|
|
|
|
}
|
|
|
|
|
spin_unlock(&dev->dev_reservation_lock);
|
|
|
|
|
|
|
|
|
|
if (pr_tmpl->pr_aptpl_active) {
|
2012-11-06 20:24:09 +00:00
|
|
|
|
if (!core_scsi3_update_and_write_aptpl(cmd->se_dev,
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
&pr_reg_n->pr_aptpl_buf[0],
|
2012-11-06 20:24:09 +00:00
|
|
|
|
pr_tmpl->pr_aptpl_buf_len)) {
|
2011-06-08 17:36:43 +00:00
|
|
|
|
pr_debug("SPC-3 PR: Updated APTPL"
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
" metadata for PREEMPT%s\n", (abort) ?
|
|
|
|
|
"_AND_ABORT" : "");
|
2012-11-06 20:24:09 +00:00
|
|
|
|
}
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
core_scsi3_put_pr_reg(pr_reg_n);
|
2011-07-19 10:26:37 +00:00
|
|
|
|
core_scsi3_pr_generation(cmd->se_dev);
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
return 0;
|
|
|
|
|
}
|
|
|
|
|
/*
|
|
|
|
|
* The PREEMPTing SA reservation key matches that of the
|
|
|
|
|
* existing persistent reservation, first, we check if
|
|
|
|
|
* we are preempting our own reservation.
|
|
|
|
|
* From spc4r17, section 5.7.11.4.3 Preempting
|
|
|
|
|
* persistent reservations and registration handling
|
|
|
|
|
*
|
|
|
|
|
* If an all registrants persistent reservation is not
|
|
|
|
|
* present, it is not an error for the persistent
|
|
|
|
|
* reservation holder to preempt itself (i.e., a
|
|
|
|
|
* PERSISTENT RESERVE OUT with a PREEMPT service action
|
|
|
|
|
* or a PREEMPT AND ABORT service action with the
|
|
|
|
|
* SERVICE ACTION RESERVATION KEY value equal to the
|
|
|
|
|
* persistent reservation holder's reservation key that
|
|
|
|
|
* is received from the persistent reservation holder).
|
|
|
|
|
* In that case, the device server shall establish the
|
|
|
|
|
* new persistent reservation and maintain the
|
|
|
|
|
* registration.
|
|
|
|
|
*/
|
|
|
|
|
prh_type = pr_res_holder->pr_res_type;
|
|
|
|
|
prh_scope = pr_res_holder->pr_res_scope;
|
|
|
|
|
/*
|
|
|
|
|
* If the SERVICE ACTION RESERVATION KEY field identifies a
|
|
|
|
|
* persistent reservation holder (see 5.7.10), the device
|
|
|
|
|
* server shall perform a preempt by doing the following as
|
|
|
|
|
* an uninterrupted series of actions:
|
|
|
|
|
*
|
|
|
|
|
* a) Release the persistent reservation for the holder
|
|
|
|
|
* identified by the SERVICE ACTION RESERVATION KEY field;
|
|
|
|
|
*/
|
|
|
|
|
if (pr_reg_n != pr_res_holder)
|
|
|
|
|
__core_scsi3_complete_pro_release(dev,
|
|
|
|
|
pr_res_holder->pr_reg_nacl,
|
|
|
|
|
dev->dev_pr_res_holder, 0);
|
|
|
|
|
/*
|
|
|
|
|
* b) Remove the registrations for all I_T nexuses identified
|
|
|
|
|
* by the SERVICE ACTION RESERVATION KEY field, except the
|
|
|
|
|
* I_T nexus that is being used for the PERSISTENT RESERVE
|
|
|
|
|
* OUT command. If an all registrants persistent reservation
|
|
|
|
|
* is present and the SERVICE ACTION RESERVATION KEY field
|
|
|
|
|
* is set to zero, then all registrations shall be removed
|
|
|
|
|
* except for that of the I_T nexus that is being used for
|
|
|
|
|
* the PERSISTENT RESERVE OUT command;
|
|
|
|
|
*/
|
|
|
|
|
spin_lock(&pr_tmpl->registration_lock);
|
|
|
|
|
list_for_each_entry_safe(pr_reg, pr_reg_tmp,
|
|
|
|
|
&pr_tmpl->registration_list, pr_reg_list) {
|
|
|
|
|
|
|
|
|
|
calling_it_nexus = (pr_reg_n == pr_reg) ? 1 : 0;
|
|
|
|
|
if (calling_it_nexus)
|
|
|
|
|
continue;
|
|
|
|
|
|
|
|
|
|
if (pr_reg->pr_res_key != sa_res_key)
|
|
|
|
|
continue;
|
|
|
|
|
|
|
|
|
|
pr_reg_nacl = pr_reg->pr_reg_nacl;
|
|
|
|
|
pr_res_mapped_lun = pr_reg->pr_res_mapped_lun;
|
|
|
|
|
__core_scsi3_free_registration(dev, pr_reg,
|
|
|
|
|
(abort) ? &preempt_and_abort_list : NULL,
|
|
|
|
|
calling_it_nexus);
|
|
|
|
|
/*
|
|
|
|
|
* e) Establish a unit attention condition for the initiator
|
|
|
|
|
* port associated with every I_T nexus that lost its
|
|
|
|
|
* persistent reservation and/or registration, with the
|
|
|
|
|
* additional sense code set to REGISTRATIONS PREEMPTED;
|
|
|
|
|
*/
|
|
|
|
|
core_scsi3_ua_allocate(pr_reg_nacl, pr_res_mapped_lun, 0x2A,
|
2012-01-04 01:12:57 +00:00
|
|
|
|
ASCQ_2AH_REGISTRATIONS_PREEMPTED);
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
}
|
|
|
|
|
spin_unlock(&pr_tmpl->registration_lock);
|
|
|
|
|
/*
|
|
|
|
|
* c) Establish a persistent reservation for the preempting
|
|
|
|
|
* I_T nexus using the contents of the SCOPE and TYPE fields;
|
|
|
|
|
*/
|
|
|
|
|
__core_scsi3_complete_pro_preempt(dev, pr_reg_n,
|
|
|
|
|
(abort) ? &preempt_and_abort_list : NULL,
|
|
|
|
|
type, scope, abort);
|
|
|
|
|
/*
|
|
|
|
|
* d) Process tasks as defined in 5.7.1;
|
|
|
|
|
* e) See above..
|
|
|
|
|
* f) If the type or scope has changed, then for every I_T nexus
|
|
|
|
|
* whose reservation key was not removed, except for the I_T
|
|
|
|
|
* nexus on which the PERSISTENT RESERVE OUT command was
|
|
|
|
|
* received, the device server shall establish a unit
|
|
|
|
|
* attention condition for the initiator port associated with
|
|
|
|
|
* that I_T nexus, with the additional sense code set to
|
|
|
|
|
* RESERVATIONS RELEASED. If the type or scope have not
|
|
|
|
|
* changed, then no unit attention condition(s) shall be
|
|
|
|
|
* established for this reason.
|
|
|
|
|
*/
|
|
|
|
|
if ((prh_type != type) || (prh_scope != scope)) {
|
|
|
|
|
spin_lock(&pr_tmpl->registration_lock);
|
|
|
|
|
list_for_each_entry_safe(pr_reg, pr_reg_tmp,
|
|
|
|
|
&pr_tmpl->registration_list, pr_reg_list) {
|
|
|
|
|
|
|
|
|
|
calling_it_nexus = (pr_reg_n == pr_reg) ? 1 : 0;
|
|
|
|
|
if (calling_it_nexus)
|
|
|
|
|
continue;
|
|
|
|
|
|
|
|
|
|
core_scsi3_ua_allocate(pr_reg->pr_reg_nacl,
|
|
|
|
|
pr_reg->pr_res_mapped_lun, 0x2A,
|
|
|
|
|
ASCQ_2AH_RESERVATIONS_RELEASED);
|
|
|
|
|
}
|
|
|
|
|
spin_unlock(&pr_tmpl->registration_lock);
|
|
|
|
|
}
|
|
|
|
|
spin_unlock(&dev->dev_reservation_lock);
|
|
|
|
|
/*
|
|
|
|
|
* Call LUN_RESET logic upon list of struct t10_pr_registration,
|
|
|
|
|
* All received CDBs for the matching existing reservation and
|
|
|
|
|
* registrations undergo ABORT_TASK logic.
|
|
|
|
|
*
|
|
|
|
|
* From there, core_scsi3_release_preempt_and_abort() will
|
|
|
|
|
* release every registration in the list (which have already
|
|
|
|
|
* been removed from the primary pr_reg list), except the
|
|
|
|
|
* new persistent reservation holder, the calling Initiator Port.
|
|
|
|
|
*/
|
|
|
|
|
if (abort) {
|
|
|
|
|
core_tmr_lun_reset(dev, NULL, &preempt_and_abort_list, cmd);
|
|
|
|
|
core_scsi3_release_preempt_and_abort(&preempt_and_abort_list,
|
|
|
|
|
pr_reg_n);
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
if (pr_tmpl->pr_aptpl_active) {
|
2012-11-06 20:24:09 +00:00
|
|
|
|
if (!core_scsi3_update_and_write_aptpl(cmd->se_dev,
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
&pr_reg_n->pr_aptpl_buf[0],
|
2012-11-06 20:24:09 +00:00
|
|
|
|
pr_tmpl->pr_aptpl_buf_len)) {
|
2011-06-08 17:36:43 +00:00
|
|
|
|
pr_debug("SPC-3 PR: Updated APTPL metadata for PREEMPT"
|
2012-11-06 20:24:09 +00:00
|
|
|
|
"%s\n", abort ? "_AND_ABORT" : "");
|
|
|
|
|
}
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
core_scsi3_put_pr_reg(pr_reg_n);
|
2011-07-19 10:26:37 +00:00
|
|
|
|
core_scsi3_pr_generation(cmd->se_dev);
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
return 0;
|
|
|
|
|
}
|
|
|
|
|
|
2012-11-06 20:24:09 +00:00
|
|
|
|
static sense_reason_t
|
|
|
|
|
core_scsi3_emulate_pro_preempt(struct se_cmd *cmd, int type, int scope,
|
|
|
|
|
u64 res_key, u64 sa_res_key, int abort)
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
{
|
|
|
|
|
switch (type) {
|
|
|
|
|
case PR_TYPE_WRITE_EXCLUSIVE:
|
|
|
|
|
case PR_TYPE_EXCLUSIVE_ACCESS:
|
|
|
|
|
case PR_TYPE_WRITE_EXCLUSIVE_REGONLY:
|
|
|
|
|
case PR_TYPE_EXCLUSIVE_ACCESS_REGONLY:
|
|
|
|
|
case PR_TYPE_WRITE_EXCLUSIVE_ALLREG:
|
|
|
|
|
case PR_TYPE_EXCLUSIVE_ACCESS_ALLREG:
|
2012-11-06 20:24:09 +00:00
|
|
|
|
return core_scsi3_pro_preempt(cmd, type, scope, res_key,
|
|
|
|
|
sa_res_key, abort);
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
default:
|
2011-06-08 17:36:43 +00:00
|
|
|
|
pr_err("SPC-3 PR: Unknown Service Action PREEMPT%s"
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
" Type: 0x%02x\n", (abort) ? "_AND_ABORT" : "", type);
|
2012-11-06 20:24:09 +00:00
|
|
|
|
return TCM_INVALID_CDB_FIELD;
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
2012-11-06 20:24:09 +00:00
|
|
|
|
static sense_reason_t
|
|
|
|
|
core_scsi3_emulate_pro_register_and_move(struct se_cmd *cmd, u64 res_key,
|
|
|
|
|
u64 sa_res_key, int aptpl, int unreg)
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
{
|
2011-07-19 08:55:10 +00:00
|
|
|
|
struct se_session *se_sess = cmd->se_sess;
|
2011-07-19 10:26:37 +00:00
|
|
|
|
struct se_device *dev = cmd->se_dev;
|
2012-03-15 19:06:58 +00:00
|
|
|
|
struct se_dev_entry *dest_se_deve = NULL;
|
2011-07-19 08:55:10 +00:00
|
|
|
|
struct se_lun *se_lun = cmd->se_lun;
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
struct se_node_acl *pr_res_nacl, *pr_reg_nacl, *dest_node_acl = NULL;
|
|
|
|
|
struct se_port *se_port;
|
|
|
|
|
struct se_portal_group *se_tpg, *dest_se_tpg = NULL;
|
|
|
|
|
struct target_core_fabric_ops *dest_tf_ops = NULL, *tf_ops;
|
|
|
|
|
struct t10_pr_registration *pr_reg, *pr_res_holder, *dest_pr_reg;
|
2012-10-08 04:03:19 +00:00
|
|
|
|
struct t10_reservation *pr_tmpl = &dev->t10_pr;
|
2011-07-20 19:13:28 +00:00
|
|
|
|
unsigned char *buf;
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
unsigned char *initiator_str;
|
|
|
|
|
char *iport_ptr = NULL, dest_iport[64], i_buf[PR_REG_ISID_ID_LEN];
|
|
|
|
|
u32 tid_len, tmp_tid_len;
|
2012-11-06 20:24:09 +00:00
|
|
|
|
int new_reg = 0, type, scope, matching_iname, prf_isid;
|
|
|
|
|
sense_reason_t ret;
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
unsigned short rtpi;
|
|
|
|
|
unsigned char proto_ident;
|
|
|
|
|
|
2011-06-08 17:36:43 +00:00
|
|
|
|
if (!se_sess || !se_lun) {
|
|
|
|
|
pr_err("SPC-3 PR: se_sess || struct se_lun is NULL!\n");
|
2012-11-06 20:24:09 +00:00
|
|
|
|
return TCM_LOGICAL_UNIT_COMMUNICATION_FAILURE;
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
}
|
2012-11-06 20:24:09 +00:00
|
|
|
|
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
memset(dest_iport, 0, 64);
|
|
|
|
|
memset(i_buf, 0, PR_REG_ISID_ID_LEN);
|
|
|
|
|
se_tpg = se_sess->se_tpg;
|
2011-07-19 08:55:10 +00:00
|
|
|
|
tf_ops = se_tpg->se_tpg_tfo;
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
/*
|
|
|
|
|
* Follow logic from spc4r17 Section 5.7.8, Table 50 --
|
|
|
|
|
* Register behaviors for a REGISTER AND MOVE service action
|
|
|
|
|
*
|
|
|
|
|
* Locate the existing *pr_reg via struct se_node_acl pointers
|
|
|
|
|
*/
|
2011-07-19 10:26:37 +00:00
|
|
|
|
pr_reg = core_scsi3_locate_pr_reg(cmd->se_dev, se_sess->se_node_acl,
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
se_sess);
|
2011-06-08 17:36:43 +00:00
|
|
|
|
if (!pr_reg) {
|
|
|
|
|
pr_err("SPC-3 PR: Unable to locate PR_REGISTERED"
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
" *pr_reg for REGISTER_AND_MOVE\n");
|
2012-11-06 20:24:09 +00:00
|
|
|
|
return TCM_LOGICAL_UNIT_COMMUNICATION_FAILURE;
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
}
|
|
|
|
|
/*
|
|
|
|
|
* The provided reservation key much match the existing reservation key
|
|
|
|
|
* provided during this initiator's I_T nexus registration.
|
|
|
|
|
*/
|
|
|
|
|
if (res_key != pr_reg->pr_res_key) {
|
2011-06-08 17:36:43 +00:00
|
|
|
|
pr_warn("SPC-3 PR REGISTER_AND_MOVE: Received"
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
" res_key: 0x%016Lx does not match existing SA REGISTER"
|
|
|
|
|
" res_key: 0x%016Lx\n", res_key, pr_reg->pr_res_key);
|
2012-11-06 20:24:09 +00:00
|
|
|
|
ret = TCM_RESERVATION_CONFLICT;
|
|
|
|
|
goto out_put_pr_reg;
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
}
|
|
|
|
|
/*
|
|
|
|
|
* The service active reservation key needs to be non zero
|
|
|
|
|
*/
|
2011-06-08 17:36:43 +00:00
|
|
|
|
if (!sa_res_key) {
|
|
|
|
|
pr_warn("SPC-3 PR REGISTER_AND_MOVE: Received zero"
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
" sa_res_key\n");
|
2012-11-06 20:24:09 +00:00
|
|
|
|
ret = TCM_INVALID_PARAMETER_LIST;
|
|
|
|
|
goto out_put_pr_reg;
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
}
|
2011-07-20 19:13:28 +00:00
|
|
|
|
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
/*
|
|
|
|
|
* Determine the Relative Target Port Identifier where the reservation
|
|
|
|
|
* will be moved to for the TransportID containing SCSI initiator WWN
|
|
|
|
|
* information.
|
|
|
|
|
*/
|
2012-01-17 00:57:08 +00:00
|
|
|
|
buf = transport_kmap_data_sg(cmd);
|
2012-11-06 20:24:09 +00:00
|
|
|
|
if (!buf) {
|
|
|
|
|
ret = TCM_LOGICAL_UNIT_COMMUNICATION_FAILURE;
|
|
|
|
|
goto out_put_pr_reg;
|
|
|
|
|
}
|
|
|
|
|
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
rtpi = (buf[18] & 0xff) << 8;
|
|
|
|
|
rtpi |= buf[19] & 0xff;
|
|
|
|
|
tid_len = (buf[20] & 0xff) << 24;
|
|
|
|
|
tid_len |= (buf[21] & 0xff) << 16;
|
|
|
|
|
tid_len |= (buf[22] & 0xff) << 8;
|
|
|
|
|
tid_len |= buf[23] & 0xff;
|
2012-01-17 00:57:08 +00:00
|
|
|
|
transport_kunmap_data_sg(cmd);
|
2011-07-20 19:13:28 +00:00
|
|
|
|
buf = NULL;
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
|
|
|
|
|
if ((tid_len + 24) != cmd->data_length) {
|
2011-06-08 17:36:43 +00:00
|
|
|
|
pr_err("SPC-3 PR: Illegal tid_len: %u + 24 byte header"
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
" does not equal CDB data_length: %u\n", tid_len,
|
|
|
|
|
cmd->data_length);
|
2012-11-06 20:24:09 +00:00
|
|
|
|
ret = TCM_INVALID_PARAMETER_LIST;
|
|
|
|
|
goto out_put_pr_reg;
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
spin_lock(&dev->se_port_lock);
|
|
|
|
|
list_for_each_entry(se_port, &dev->dev_sep_list, sep_list) {
|
|
|
|
|
if (se_port->sep_rtpi != rtpi)
|
|
|
|
|
continue;
|
|
|
|
|
dest_se_tpg = se_port->sep_tpg;
|
2011-06-08 17:36:43 +00:00
|
|
|
|
if (!dest_se_tpg)
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
continue;
|
2011-07-19 08:55:10 +00:00
|
|
|
|
dest_tf_ops = dest_se_tpg->se_tpg_tfo;
|
2011-06-08 17:36:43 +00:00
|
|
|
|
if (!dest_tf_ops)
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
continue;
|
|
|
|
|
|
|
|
|
|
atomic_inc(&dest_se_tpg->tpg_pr_ref_count);
|
|
|
|
|
smp_mb__after_atomic_inc();
|
|
|
|
|
spin_unlock(&dev->se_port_lock);
|
|
|
|
|
|
2012-11-06 20:24:09 +00:00
|
|
|
|
if (core_scsi3_tpg_depend_item(dest_se_tpg)) {
|
2011-06-08 17:36:43 +00:00
|
|
|
|
pr_err("core_scsi3_tpg_depend_item() failed"
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
" for dest_se_tpg\n");
|
|
|
|
|
atomic_dec(&dest_se_tpg->tpg_pr_ref_count);
|
|
|
|
|
smp_mb__after_atomic_dec();
|
2012-11-06 20:24:09 +00:00
|
|
|
|
ret = TCM_LOGICAL_UNIT_COMMUNICATION_FAILURE;
|
|
|
|
|
goto out_put_pr_reg;
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
spin_lock(&dev->se_port_lock);
|
|
|
|
|
break;
|
|
|
|
|
}
|
|
|
|
|
spin_unlock(&dev->se_port_lock);
|
|
|
|
|
|
2011-06-08 17:36:43 +00:00
|
|
|
|
if (!dest_se_tpg || !dest_tf_ops) {
|
|
|
|
|
pr_err("SPC-3 PR REGISTER_AND_MOVE: Unable to locate"
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
" fabric ops from Relative Target Port Identifier:"
|
|
|
|
|
" %hu\n", rtpi);
|
2012-11-06 20:24:09 +00:00
|
|
|
|
ret = TCM_INVALID_PARAMETER_LIST;
|
|
|
|
|
goto out_put_pr_reg;
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
}
|
2011-07-20 19:13:28 +00:00
|
|
|
|
|
2012-01-17 00:57:08 +00:00
|
|
|
|
buf = transport_kmap_data_sg(cmd);
|
2012-11-06 20:24:09 +00:00
|
|
|
|
if (!buf) {
|
|
|
|
|
ret = TCM_LOGICAL_UNIT_COMMUNICATION_FAILURE;
|
|
|
|
|
goto out_put_pr_reg;
|
|
|
|
|
}
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
proto_ident = (buf[24] & 0x0f);
|
2012-04-03 22:51:12 +00:00
|
|
|
|
|
2011-06-08 17:36:43 +00:00
|
|
|
|
pr_debug("SPC-3 PR REGISTER_AND_MOVE: Extracted Protocol Identifier:"
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
" 0x%02x\n", proto_ident);
|
2012-04-03 22:51:12 +00:00
|
|
|
|
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
if (proto_ident != dest_tf_ops->get_fabric_proto_ident(dest_se_tpg)) {
|
2011-06-08 17:36:43 +00:00
|
|
|
|
pr_err("SPC-3 PR REGISTER_AND_MOVE: Received"
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
" proto_ident: 0x%02x does not match ident: 0x%02x"
|
|
|
|
|
" from fabric: %s\n", proto_ident,
|
|
|
|
|
dest_tf_ops->get_fabric_proto_ident(dest_se_tpg),
|
|
|
|
|
dest_tf_ops->get_fabric_name());
|
2012-11-06 20:24:09 +00:00
|
|
|
|
ret = TCM_INVALID_PARAMETER_LIST;
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
goto out;
|
|
|
|
|
}
|
|
|
|
|
if (dest_tf_ops->tpg_parse_pr_out_transport_id == NULL) {
|
2011-06-08 17:36:43 +00:00
|
|
|
|
pr_err("SPC-3 PR REGISTER_AND_MOVE: Fabric does not"
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
" containg a valid tpg_parse_pr_out_transport_id"
|
|
|
|
|
" function pointer\n");
|
2012-11-06 20:24:09 +00:00
|
|
|
|
ret = TCM_LOGICAL_UNIT_COMMUNICATION_FAILURE;
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
goto out;
|
|
|
|
|
}
|
|
|
|
|
initiator_str = dest_tf_ops->tpg_parse_pr_out_transport_id(dest_se_tpg,
|
|
|
|
|
(const char *)&buf[24], &tmp_tid_len, &iport_ptr);
|
2011-06-08 17:36:43 +00:00
|
|
|
|
if (!initiator_str) {
|
|
|
|
|
pr_err("SPC-3 PR REGISTER_AND_MOVE: Unable to locate"
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
" initiator_str from Transport ID\n");
|
2012-11-06 20:24:09 +00:00
|
|
|
|
ret = TCM_INVALID_PARAMETER_LIST;
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
goto out;
|
|
|
|
|
}
|
|
|
|
|
|
2012-01-17 00:57:08 +00:00
|
|
|
|
transport_kunmap_data_sg(cmd);
|
2011-07-20 19:13:28 +00:00
|
|
|
|
buf = NULL;
|
|
|
|
|
|
2011-06-08 17:36:43 +00:00
|
|
|
|
pr_debug("SPC-3 PR [%s] Extracted initiator %s identifier: %s"
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
" %s\n", dest_tf_ops->get_fabric_name(), (iport_ptr != NULL) ?
|
|
|
|
|
"port" : "device", initiator_str, (iport_ptr != NULL) ?
|
|
|
|
|
iport_ptr : "");
|
|
|
|
|
/*
|
|
|
|
|
* If a PERSISTENT RESERVE OUT command with a REGISTER AND MOVE service
|
|
|
|
|
* action specifies a TransportID that is the same as the initiator port
|
|
|
|
|
* of the I_T nexus for the command received, then the command shall
|
|
|
|
|
* be terminated with CHECK CONDITION status, with the sense key set to
|
|
|
|
|
* ILLEGAL REQUEST, and the additional sense code set to INVALID FIELD
|
|
|
|
|
* IN PARAMETER LIST.
|
|
|
|
|
*/
|
|
|
|
|
pr_reg_nacl = pr_reg->pr_reg_nacl;
|
|
|
|
|
matching_iname = (!strcmp(initiator_str,
|
|
|
|
|
pr_reg_nacl->initiatorname)) ? 1 : 0;
|
2011-06-08 17:36:43 +00:00
|
|
|
|
if (!matching_iname)
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
goto after_iport_check;
|
|
|
|
|
|
2011-06-08 17:36:43 +00:00
|
|
|
|
if (!iport_ptr || !pr_reg->isid_present_at_reg) {
|
|
|
|
|
pr_err("SPC-3 PR REGISTER_AND_MOVE: TransportID: %s"
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
" matches: %s on received I_T Nexus\n", initiator_str,
|
|
|
|
|
pr_reg_nacl->initiatorname);
|
2012-11-06 20:24:09 +00:00
|
|
|
|
ret = TCM_INVALID_PARAMETER_LIST;
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
goto out;
|
|
|
|
|
}
|
2011-06-08 17:36:43 +00:00
|
|
|
|
if (!strcmp(iport_ptr, pr_reg->pr_reg_isid)) {
|
|
|
|
|
pr_err("SPC-3 PR REGISTER_AND_MOVE: TransportID: %s %s"
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
" matches: %s %s on received I_T Nexus\n",
|
|
|
|
|
initiator_str, iport_ptr, pr_reg_nacl->initiatorname,
|
|
|
|
|
pr_reg->pr_reg_isid);
|
2012-11-06 20:24:09 +00:00
|
|
|
|
ret = TCM_INVALID_PARAMETER_LIST;
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
goto out;
|
|
|
|
|
}
|
|
|
|
|
after_iport_check:
|
|
|
|
|
/*
|
|
|
|
|
* Locate the destination struct se_node_acl from the received Transport ID
|
|
|
|
|
*/
|
2011-08-16 16:40:01 +00:00
|
|
|
|
spin_lock_irq(&dest_se_tpg->acl_node_lock);
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
dest_node_acl = __core_tpg_get_initiator_node_acl(dest_se_tpg,
|
|
|
|
|
initiator_str);
|
|
|
|
|
if (dest_node_acl) {
|
|
|
|
|
atomic_inc(&dest_node_acl->acl_pr_ref_count);
|
|
|
|
|
smp_mb__after_atomic_inc();
|
|
|
|
|
}
|
2011-08-16 16:40:01 +00:00
|
|
|
|
spin_unlock_irq(&dest_se_tpg->acl_node_lock);
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
|
2011-06-08 17:36:43 +00:00
|
|
|
|
if (!dest_node_acl) {
|
|
|
|
|
pr_err("Unable to locate %s dest_node_acl for"
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
" TransportID%s\n", dest_tf_ops->get_fabric_name(),
|
|
|
|
|
initiator_str);
|
2012-11-06 20:24:09 +00:00
|
|
|
|
ret = TCM_INVALID_PARAMETER_LIST;
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
goto out;
|
|
|
|
|
}
|
2012-11-06 20:24:09 +00:00
|
|
|
|
|
|
|
|
|
if (core_scsi3_nodeacl_depend_item(dest_node_acl)) {
|
2011-06-08 17:36:43 +00:00
|
|
|
|
pr_err("core_scsi3_nodeacl_depend_item() for"
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
" dest_node_acl\n");
|
|
|
|
|
atomic_dec(&dest_node_acl->acl_pr_ref_count);
|
|
|
|
|
smp_mb__after_atomic_dec();
|
|
|
|
|
dest_node_acl = NULL;
|
2012-11-06 20:24:09 +00:00
|
|
|
|
ret = TCM_INVALID_PARAMETER_LIST;
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
goto out;
|
|
|
|
|
}
|
2012-04-03 22:51:12 +00:00
|
|
|
|
|
2011-06-08 17:36:43 +00:00
|
|
|
|
pr_debug("SPC-3 PR REGISTER_AND_MOVE: Found %s dest_node_acl:"
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
" %s from TransportID\n", dest_tf_ops->get_fabric_name(),
|
|
|
|
|
dest_node_acl->initiatorname);
|
2012-04-03 22:51:12 +00:00
|
|
|
|
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
/*
|
|
|
|
|
* Locate the struct se_dev_entry pointer for the matching RELATIVE TARGET
|
|
|
|
|
* PORT IDENTIFIER.
|
|
|
|
|
*/
|
|
|
|
|
dest_se_deve = core_get_se_deve_from_rtpi(dest_node_acl, rtpi);
|
2011-06-08 17:36:43 +00:00
|
|
|
|
if (!dest_se_deve) {
|
|
|
|
|
pr_err("Unable to locate %s dest_se_deve from RTPI:"
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
" %hu\n", dest_tf_ops->get_fabric_name(), rtpi);
|
2012-11-06 20:24:09 +00:00
|
|
|
|
ret = TCM_INVALID_PARAMETER_LIST;
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
goto out;
|
|
|
|
|
}
|
|
|
|
|
|
2012-11-06 20:24:09 +00:00
|
|
|
|
if (core_scsi3_lunacl_depend_item(dest_se_deve)) {
|
2011-06-08 17:36:43 +00:00
|
|
|
|
pr_err("core_scsi3_lunacl_depend_item() failed\n");
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
atomic_dec(&dest_se_deve->pr_ref_count);
|
|
|
|
|
smp_mb__after_atomic_dec();
|
|
|
|
|
dest_se_deve = NULL;
|
2012-11-06 20:24:09 +00:00
|
|
|
|
ret = TCM_LOGICAL_UNIT_COMMUNICATION_FAILURE;
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
goto out;
|
|
|
|
|
}
|
2012-04-03 22:51:12 +00:00
|
|
|
|
|
2011-06-08 17:36:43 +00:00
|
|
|
|
pr_debug("SPC-3 PR REGISTER_AND_MOVE: Located %s node %s LUN"
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
" ACL for dest_se_deve->mapped_lun: %u\n",
|
|
|
|
|
dest_tf_ops->get_fabric_name(), dest_node_acl->initiatorname,
|
|
|
|
|
dest_se_deve->mapped_lun);
|
2012-04-03 22:51:12 +00:00
|
|
|
|
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
/*
|
|
|
|
|
* A persistent reservation needs to already existing in order to
|
|
|
|
|
* successfully complete the REGISTER_AND_MOVE service action..
|
|
|
|
|
*/
|
|
|
|
|
spin_lock(&dev->dev_reservation_lock);
|
|
|
|
|
pr_res_holder = dev->dev_pr_res_holder;
|
2011-06-08 17:36:43 +00:00
|
|
|
|
if (!pr_res_holder) {
|
|
|
|
|
pr_warn("SPC-3 PR REGISTER_AND_MOVE: No reservation"
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
" currently held\n");
|
|
|
|
|
spin_unlock(&dev->dev_reservation_lock);
|
2012-11-06 20:24:09 +00:00
|
|
|
|
ret = TCM_INVALID_CDB_FIELD;
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
goto out;
|
|
|
|
|
}
|
|
|
|
|
/*
|
|
|
|
|
* The received on I_T Nexus must be the reservation holder.
|
|
|
|
|
*
|
|
|
|
|
* From spc4r17 section 5.7.8 Table 50 --
|
|
|
|
|
* Register behaviors for a REGISTER AND MOVE service action
|
|
|
|
|
*/
|
|
|
|
|
if (pr_res_holder != pr_reg) {
|
2011-06-08 17:36:43 +00:00
|
|
|
|
pr_warn("SPC-3 PR REGISTER_AND_MOVE: Calling I_T"
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
" Nexus is not reservation holder\n");
|
|
|
|
|
spin_unlock(&dev->dev_reservation_lock);
|
2012-11-06 20:24:09 +00:00
|
|
|
|
ret = TCM_RESERVATION_CONFLICT;
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
goto out;
|
|
|
|
|
}
|
|
|
|
|
/*
|
|
|
|
|
* From spc4r17 section 5.7.8: registering and moving reservation
|
|
|
|
|
*
|
|
|
|
|
* If a PERSISTENT RESERVE OUT command with a REGISTER AND MOVE service
|
|
|
|
|
* action is received and the established persistent reservation is a
|
|
|
|
|
* Write Exclusive - All Registrants type or Exclusive Access -
|
|
|
|
|
* All Registrants type reservation, then the command shall be completed
|
|
|
|
|
* with RESERVATION CONFLICT status.
|
|
|
|
|
*/
|
|
|
|
|
if ((pr_res_holder->pr_res_type == PR_TYPE_WRITE_EXCLUSIVE_ALLREG) ||
|
|
|
|
|
(pr_res_holder->pr_res_type == PR_TYPE_EXCLUSIVE_ACCESS_ALLREG)) {
|
2011-06-08 17:36:43 +00:00
|
|
|
|
pr_warn("SPC-3 PR REGISTER_AND_MOVE: Unable to move"
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
" reservation for type: %s\n",
|
|
|
|
|
core_scsi3_pr_dump_type(pr_res_holder->pr_res_type));
|
|
|
|
|
spin_unlock(&dev->dev_reservation_lock);
|
2012-11-06 20:24:09 +00:00
|
|
|
|
ret = TCM_RESERVATION_CONFLICT;
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
goto out;
|
|
|
|
|
}
|
|
|
|
|
pr_res_nacl = pr_res_holder->pr_reg_nacl;
|
|
|
|
|
/*
|
|
|
|
|
* b) Ignore the contents of the (received) SCOPE and TYPE fields;
|
|
|
|
|
*/
|
|
|
|
|
type = pr_res_holder->pr_res_type;
|
|
|
|
|
scope = pr_res_holder->pr_res_type;
|
|
|
|
|
/*
|
|
|
|
|
* c) Associate the reservation key specified in the SERVICE ACTION
|
|
|
|
|
* RESERVATION KEY field with the I_T nexus specified as the
|
|
|
|
|
* destination of the register and move, where:
|
|
|
|
|
* A) The I_T nexus is specified by the TransportID and the
|
|
|
|
|
* RELATIVE TARGET PORT IDENTIFIER field (see 6.14.4); and
|
|
|
|
|
* B) Regardless of the TransportID format used, the association for
|
|
|
|
|
* the initiator port is based on either the initiator port name
|
|
|
|
|
* (see 3.1.71) on SCSI transport protocols where port names are
|
|
|
|
|
* required or the initiator port identifier (see 3.1.70) on SCSI
|
|
|
|
|
* transport protocols where port names are not required;
|
|
|
|
|
* d) Register the reservation key specified in the SERVICE ACTION
|
|
|
|
|
* RESERVATION KEY field;
|
|
|
|
|
* e) Retain the reservation key specified in the SERVICE ACTION
|
|
|
|
|
* RESERVATION KEY field and associated information;
|
|
|
|
|
*
|
|
|
|
|
* Also, It is not an error for a REGISTER AND MOVE service action to
|
|
|
|
|
* register an I_T nexus that is already registered with the same
|
|
|
|
|
* reservation key or a different reservation key.
|
|
|
|
|
*/
|
|
|
|
|
dest_pr_reg = __core_scsi3_locate_pr_reg(dev, dest_node_acl,
|
|
|
|
|
iport_ptr);
|
2011-06-08 17:36:43 +00:00
|
|
|
|
if (!dest_pr_reg) {
|
2012-11-06 20:24:09 +00:00
|
|
|
|
if (core_scsi3_alloc_registration(cmd->se_dev,
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
dest_node_acl, dest_se_deve, iport_ptr,
|
2012-11-06 20:24:09 +00:00
|
|
|
|
sa_res_key, 0, aptpl, 2, 1)) {
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
spin_unlock(&dev->dev_reservation_lock);
|
2012-11-06 20:24:09 +00:00
|
|
|
|
ret = TCM_INVALID_PARAMETER_LIST;
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
goto out;
|
|
|
|
|
}
|
|
|
|
|
dest_pr_reg = __core_scsi3_locate_pr_reg(dev, dest_node_acl,
|
|
|
|
|
iport_ptr);
|
|
|
|
|
new_reg = 1;
|
|
|
|
|
}
|
|
|
|
|
/*
|
|
|
|
|
* f) Release the persistent reservation for the persistent reservation
|
|
|
|
|
* holder (i.e., the I_T nexus on which the
|
|
|
|
|
*/
|
|
|
|
|
__core_scsi3_complete_pro_release(dev, pr_res_nacl,
|
|
|
|
|
dev->dev_pr_res_holder, 0);
|
|
|
|
|
/*
|
|
|
|
|
* g) Move the persistent reservation to the specified I_T nexus using
|
|
|
|
|
* the same scope and type as the persistent reservation released in
|
|
|
|
|
* item f); and
|
|
|
|
|
*/
|
|
|
|
|
dev->dev_pr_res_holder = dest_pr_reg;
|
|
|
|
|
dest_pr_reg->pr_res_holder = 1;
|
|
|
|
|
dest_pr_reg->pr_res_type = type;
|
|
|
|
|
pr_reg->pr_res_scope = scope;
|
|
|
|
|
prf_isid = core_pr_dump_initiator_port(pr_reg, &i_buf[0],
|
|
|
|
|
PR_REG_ISID_ID_LEN);
|
|
|
|
|
/*
|
|
|
|
|
* Increment PRGeneration for existing registrations..
|
|
|
|
|
*/
|
2011-06-08 17:36:43 +00:00
|
|
|
|
if (!new_reg)
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
dest_pr_reg->pr_res_generation = pr_tmpl->pr_generation++;
|
|
|
|
|
spin_unlock(&dev->dev_reservation_lock);
|
|
|
|
|
|
2011-06-08 17:36:43 +00:00
|
|
|
|
pr_debug("SPC-3 PR [%s] Service Action: REGISTER_AND_MOVE"
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
" created new reservation holder TYPE: %s on object RTPI:"
|
|
|
|
|
" %hu PRGeneration: 0x%08x\n", dest_tf_ops->get_fabric_name(),
|
|
|
|
|
core_scsi3_pr_dump_type(type), rtpi,
|
|
|
|
|
dest_pr_reg->pr_res_generation);
|
2011-06-08 17:36:43 +00:00
|
|
|
|
pr_debug("SPC-3 PR Successfully moved reservation from"
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
" %s Fabric Node: %s%s -> %s Fabric Node: %s %s\n",
|
|
|
|
|
tf_ops->get_fabric_name(), pr_reg_nacl->initiatorname,
|
|
|
|
|
(prf_isid) ? &i_buf[0] : "", dest_tf_ops->get_fabric_name(),
|
|
|
|
|
dest_node_acl->initiatorname, (iport_ptr != NULL) ?
|
|
|
|
|
iport_ptr : "");
|
|
|
|
|
/*
|
|
|
|
|
* It is now safe to release configfs group dependencies for destination
|
|
|
|
|
* of Transport ID Initiator Device/Port Identifier
|
|
|
|
|
*/
|
|
|
|
|
core_scsi3_lunacl_undepend_item(dest_se_deve);
|
|
|
|
|
core_scsi3_nodeacl_undepend_item(dest_node_acl);
|
|
|
|
|
core_scsi3_tpg_undepend_item(dest_se_tpg);
|
|
|
|
|
/*
|
|
|
|
|
* h) If the UNREG bit is set to one, unregister (see 5.7.11.3) the I_T
|
|
|
|
|
* nexus on which PERSISTENT RESERVE OUT command was received.
|
|
|
|
|
*/
|
|
|
|
|
if (unreg) {
|
|
|
|
|
spin_lock(&pr_tmpl->registration_lock);
|
|
|
|
|
__core_scsi3_free_registration(dev, pr_reg, NULL, 1);
|
|
|
|
|
spin_unlock(&pr_tmpl->registration_lock);
|
|
|
|
|
} else
|
|
|
|
|
core_scsi3_put_pr_reg(pr_reg);
|
|
|
|
|
|
|
|
|
|
/*
|
|
|
|
|
* Clear the APTPL metadata if APTPL has been disabled, otherwise
|
|
|
|
|
* write out the updated metadata to struct file for this SCSI device.
|
|
|
|
|
*/
|
2011-06-08 17:36:43 +00:00
|
|
|
|
if (!aptpl) {
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
pr_tmpl->pr_aptpl_active = 0;
|
2011-07-19 10:26:37 +00:00
|
|
|
|
core_scsi3_update_and_write_aptpl(cmd->se_dev, NULL, 0);
|
2011-06-08 17:36:43 +00:00
|
|
|
|
pr_debug("SPC-3 PR: Set APTPL Bit Deactivated for"
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
" REGISTER_AND_MOVE\n");
|
|
|
|
|
} else {
|
|
|
|
|
pr_tmpl->pr_aptpl_active = 1;
|
2012-11-06 20:24:09 +00:00
|
|
|
|
if (!core_scsi3_update_and_write_aptpl(cmd->se_dev,
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
&dest_pr_reg->pr_aptpl_buf[0],
|
2012-11-06 20:24:09 +00:00
|
|
|
|
pr_tmpl->pr_aptpl_buf_len)) {
|
2011-06-08 17:36:43 +00:00
|
|
|
|
pr_debug("SPC-3 PR: Set APTPL Bit Activated for"
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
" REGISTER_AND_MOVE\n");
|
2012-11-06 20:24:09 +00:00
|
|
|
|
}
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
}
|
|
|
|
|
|
2012-01-17 00:57:08 +00:00
|
|
|
|
transport_kunmap_data_sg(cmd);
|
2011-07-20 19:13:28 +00:00
|
|
|
|
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
core_scsi3_put_pr_reg(dest_pr_reg);
|
|
|
|
|
return 0;
|
|
|
|
|
out:
|
2011-07-20 19:13:28 +00:00
|
|
|
|
if (buf)
|
2012-01-17 00:57:08 +00:00
|
|
|
|
transport_kunmap_data_sg(cmd);
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
if (dest_se_deve)
|
|
|
|
|
core_scsi3_lunacl_undepend_item(dest_se_deve);
|
|
|
|
|
if (dest_node_acl)
|
|
|
|
|
core_scsi3_nodeacl_undepend_item(dest_node_acl);
|
|
|
|
|
core_scsi3_tpg_undepend_item(dest_se_tpg);
|
2012-11-06 20:24:09 +00:00
|
|
|
|
|
|
|
|
|
out_put_pr_reg:
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
core_scsi3_put_pr_reg(pr_reg);
|
|
|
|
|
return ret;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
static unsigned long long core_scsi3_extract_reservation_key(unsigned char *cdb)
|
|
|
|
|
{
|
|
|
|
|
unsigned int __v1, __v2;
|
|
|
|
|
|
|
|
|
|
__v1 = (cdb[0] << 24) | (cdb[1] << 16) | (cdb[2] << 8) | cdb[3];
|
|
|
|
|
__v2 = (cdb[4] << 24) | (cdb[5] << 16) | (cdb[6] << 8) | cdb[7];
|
|
|
|
|
|
|
|
|
|
return ((unsigned long long)__v2) | (unsigned long long)__v1 << 32;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/*
|
|
|
|
|
* See spc4r17 section 6.14 Table 170
|
|
|
|
|
*/
|
2012-11-06 20:24:09 +00:00
|
|
|
|
sense_reason_t
|
|
|
|
|
target_scsi3_emulate_pr_out(struct se_cmd *cmd)
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
{
|
2011-11-03 21:50:41 +00:00
|
|
|
|
unsigned char *cdb = &cmd->t_task_cdb[0];
|
2011-07-20 19:13:28 +00:00
|
|
|
|
unsigned char *buf;
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
u64 res_key, sa_res_key;
|
|
|
|
|
int sa, scope, type, aptpl;
|
|
|
|
|
int spec_i_pt = 0, all_tg_pt = 0, unreg = 0;
|
2012-11-06 20:24:09 +00:00
|
|
|
|
sense_reason_t ret;
|
2011-11-03 21:50:41 +00:00
|
|
|
|
|
|
|
|
|
/*
|
|
|
|
|
* Following spc2r20 5.5.1 Reservations overview:
|
|
|
|
|
*
|
|
|
|
|
* If a logical unit has been reserved by any RESERVE command and is
|
|
|
|
|
* still reserved by any initiator, all PERSISTENT RESERVE IN and all
|
|
|
|
|
* PERSISTENT RESERVE OUT commands shall conflict regardless of
|
|
|
|
|
* initiator or service action and shall terminate with a RESERVATION
|
|
|
|
|
* CONFLICT status.
|
|
|
|
|
*/
|
2012-10-08 04:03:19 +00:00
|
|
|
|
if (cmd->se_dev->dev_reservation_flags & DRF_SPC2_RESERVATIONS) {
|
2011-11-03 21:50:41 +00:00
|
|
|
|
pr_err("Received PERSISTENT_RESERVE CDB while legacy"
|
|
|
|
|
" SPC-2 reservation is held, returning"
|
|
|
|
|
" RESERVATION_CONFLICT\n");
|
2012-11-06 20:24:09 +00:00
|
|
|
|
return TCM_RESERVATION_CONFLICT;
|
2011-11-03 21:50:41 +00:00
|
|
|
|
}
|
|
|
|
|
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
/*
|
|
|
|
|
* FIXME: A NULL struct se_session pointer means an this is not coming from
|
|
|
|
|
* a $FABRIC_MOD's nexus, but from internal passthrough ops.
|
|
|
|
|
*/
|
2012-11-06 20:24:09 +00:00
|
|
|
|
if (!cmd->se_sess)
|
|
|
|
|
return TCM_LOGICAL_UNIT_COMMUNICATION_FAILURE;
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
|
|
|
|
|
if (cmd->data_length < 24) {
|
2011-06-08 17:36:43 +00:00
|
|
|
|
pr_warn("SPC-PR: Received PR OUT parameter list"
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
" length too small: %u\n", cmd->data_length);
|
2012-11-06 20:24:09 +00:00
|
|
|
|
return TCM_INVALID_PARAMETER_LIST;
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
}
|
2012-11-06 20:24:09 +00:00
|
|
|
|
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
/*
|
|
|
|
|
* From the PERSISTENT_RESERVE_OUT command descriptor block (CDB)
|
|
|
|
|
*/
|
|
|
|
|
sa = (cdb[1] & 0x1f);
|
|
|
|
|
scope = (cdb[2] & 0xf0);
|
|
|
|
|
type = (cdb[2] & 0x0f);
|
2011-07-20 19:13:28 +00:00
|
|
|
|
|
2012-01-17 00:57:08 +00:00
|
|
|
|
buf = transport_kmap_data_sg(cmd);
|
2012-11-06 20:24:09 +00:00
|
|
|
|
if (!buf)
|
|
|
|
|
return TCM_LOGICAL_UNIT_COMMUNICATION_FAILURE;
|
|
|
|
|
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
/*
|
|
|
|
|
* From PERSISTENT_RESERVE_OUT parameter list (payload)
|
|
|
|
|
*/
|
|
|
|
|
res_key = core_scsi3_extract_reservation_key(&buf[0]);
|
|
|
|
|
sa_res_key = core_scsi3_extract_reservation_key(&buf[8]);
|
|
|
|
|
/*
|
|
|
|
|
* REGISTER_AND_MOVE uses a different SA parameter list containing
|
|
|
|
|
* SCSI TransportIDs.
|
|
|
|
|
*/
|
|
|
|
|
if (sa != PRO_REGISTER_AND_MOVE) {
|
|
|
|
|
spec_i_pt = (buf[20] & 0x08);
|
|
|
|
|
all_tg_pt = (buf[20] & 0x04);
|
|
|
|
|
aptpl = (buf[20] & 0x01);
|
|
|
|
|
} else {
|
|
|
|
|
aptpl = (buf[17] & 0x01);
|
|
|
|
|
unreg = (buf[17] & 0x02);
|
|
|
|
|
}
|
2012-01-17 00:57:08 +00:00
|
|
|
|
transport_kunmap_data_sg(cmd);
|
2011-07-20 19:13:28 +00:00
|
|
|
|
buf = NULL;
|
|
|
|
|
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
/*
|
|
|
|
|
* SPEC_I_PT=1 is only valid for Service action: REGISTER
|
|
|
|
|
*/
|
2012-11-06 20:24:09 +00:00
|
|
|
|
if (spec_i_pt && ((cdb[1] & 0x1f) != PRO_REGISTER))
|
|
|
|
|
return TCM_INVALID_PARAMETER_LIST;
|
2011-11-03 21:50:44 +00:00
|
|
|
|
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
/*
|
|
|
|
|
* From spc4r17 section 6.14:
|
|
|
|
|
*
|
|
|
|
|
* If the SPEC_I_PT bit is set to zero, the service action is not
|
|
|
|
|
* REGISTER AND MOVE, and the parameter list length is not 24, then
|
|
|
|
|
* the command shall be terminated with CHECK CONDITION status, with
|
|
|
|
|
* the sense key set to ILLEGAL REQUEST, and the additional sense
|
|
|
|
|
* code set to PARAMETER LIST LENGTH ERROR.
|
|
|
|
|
*/
|
2011-06-08 17:36:43 +00:00
|
|
|
|
if (!spec_i_pt && ((cdb[1] & 0x1f) != PRO_REGISTER_AND_MOVE) &&
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
(cmd->data_length != 24)) {
|
2011-06-08 17:36:43 +00:00
|
|
|
|
pr_warn("SPC-PR: Received PR OUT illegal parameter"
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
" list length: %u\n", cmd->data_length);
|
2012-11-06 20:24:09 +00:00
|
|
|
|
return TCM_INVALID_PARAMETER_LIST;
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
}
|
2012-11-06 20:24:09 +00:00
|
|
|
|
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
/*
|
|
|
|
|
* (core_scsi3_emulate_pro_* function parameters
|
|
|
|
|
* are defined by spc4r17 Table 174:
|
|
|
|
|
* PERSISTENT_RESERVE_OUT service actions and valid parameters.
|
|
|
|
|
*/
|
|
|
|
|
switch (sa) {
|
|
|
|
|
case PRO_REGISTER:
|
2011-11-03 21:50:44 +00:00
|
|
|
|
ret = core_scsi3_emulate_pro_register(cmd,
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
res_key, sa_res_key, aptpl, all_tg_pt, spec_i_pt, 0);
|
2011-11-03 21:50:44 +00:00
|
|
|
|
break;
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
case PRO_RESERVE:
|
2011-11-03 21:50:44 +00:00
|
|
|
|
ret = core_scsi3_emulate_pro_reserve(cmd, type, scope, res_key);
|
|
|
|
|
break;
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
case PRO_RELEASE:
|
2011-11-03 21:50:44 +00:00
|
|
|
|
ret = core_scsi3_emulate_pro_release(cmd, type, scope, res_key);
|
|
|
|
|
break;
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
case PRO_CLEAR:
|
2011-11-03 21:50:44 +00:00
|
|
|
|
ret = core_scsi3_emulate_pro_clear(cmd, res_key);
|
|
|
|
|
break;
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
case PRO_PREEMPT:
|
2011-11-03 21:50:44 +00:00
|
|
|
|
ret = core_scsi3_emulate_pro_preempt(cmd, type, scope,
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
res_key, sa_res_key, 0);
|
2011-11-03 21:50:44 +00:00
|
|
|
|
break;
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
case PRO_PREEMPT_AND_ABORT:
|
2011-11-03 21:50:44 +00:00
|
|
|
|
ret = core_scsi3_emulate_pro_preempt(cmd, type, scope,
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
res_key, sa_res_key, 1);
|
2011-11-03 21:50:44 +00:00
|
|
|
|
break;
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
case PRO_REGISTER_AND_IGNORE_EXISTING_KEY:
|
2011-11-03 21:50:44 +00:00
|
|
|
|
ret = core_scsi3_emulate_pro_register(cmd,
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
0, sa_res_key, aptpl, all_tg_pt, spec_i_pt, 1);
|
2011-11-03 21:50:44 +00:00
|
|
|
|
break;
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
case PRO_REGISTER_AND_MOVE:
|
2011-11-03 21:50:44 +00:00
|
|
|
|
ret = core_scsi3_emulate_pro_register_and_move(cmd, res_key,
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
sa_res_key, aptpl, unreg);
|
2011-11-03 21:50:44 +00:00
|
|
|
|
break;
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
default:
|
2011-06-08 17:36:43 +00:00
|
|
|
|
pr_err("Unknown PERSISTENT_RESERVE_OUT service"
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
" action: 0x%02x\n", cdb[1] & 0x1f);
|
2012-11-06 20:24:09 +00:00
|
|
|
|
return TCM_INVALID_CDB_FIELD;
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
}
|
|
|
|
|
|
2012-04-23 15:35:33 +00:00
|
|
|
|
if (!ret)
|
|
|
|
|
target_complete_cmd(cmd, GOOD);
|
2011-11-03 21:50:44 +00:00
|
|
|
|
return ret;
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/*
|
|
|
|
|
* PERSISTENT_RESERVE_IN Service Action READ_KEYS
|
|
|
|
|
*
|
|
|
|
|
* See spc4r17 section 5.7.6.2 and section 6.13.2, Table 160
|
|
|
|
|
*/
|
2012-11-06 20:24:09 +00:00
|
|
|
|
static sense_reason_t
|
|
|
|
|
core_scsi3_pri_read_keys(struct se_cmd *cmd)
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
{
|
2012-10-08 04:03:19 +00:00
|
|
|
|
struct se_device *dev = cmd->se_dev;
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
struct t10_pr_registration *pr_reg;
|
2011-07-20 19:13:28 +00:00
|
|
|
|
unsigned char *buf;
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
u32 add_len = 0, off = 8;
|
|
|
|
|
|
|
|
|
|
if (cmd->data_length < 8) {
|
2011-06-08 17:36:43 +00:00
|
|
|
|
pr_err("PRIN SA READ_KEYS SCSI Data Length: %u"
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
" too small\n", cmd->data_length);
|
2012-11-06 20:24:09 +00:00
|
|
|
|
return TCM_INVALID_CDB_FIELD;
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
}
|
|
|
|
|
|
2012-01-17 00:57:08 +00:00
|
|
|
|
buf = transport_kmap_data_sg(cmd);
|
2012-11-06 20:24:09 +00:00
|
|
|
|
if (!buf)
|
|
|
|
|
return TCM_LOGICAL_UNIT_COMMUNICATION_FAILURE;
|
|
|
|
|
|
2012-10-08 04:03:19 +00:00
|
|
|
|
buf[0] = ((dev->t10_pr.pr_generation >> 24) & 0xff);
|
|
|
|
|
buf[1] = ((dev->t10_pr.pr_generation >> 16) & 0xff);
|
|
|
|
|
buf[2] = ((dev->t10_pr.pr_generation >> 8) & 0xff);
|
|
|
|
|
buf[3] = (dev->t10_pr.pr_generation & 0xff);
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
|
2012-10-08 04:03:19 +00:00
|
|
|
|
spin_lock(&dev->t10_pr.registration_lock);
|
|
|
|
|
list_for_each_entry(pr_reg, &dev->t10_pr.registration_list,
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
pr_reg_list) {
|
|
|
|
|
/*
|
|
|
|
|
* Check for overflow of 8byte PRI READ_KEYS payload and
|
|
|
|
|
* next reservation key list descriptor.
|
|
|
|
|
*/
|
|
|
|
|
if ((add_len + 8) > (cmd->data_length - 8))
|
|
|
|
|
break;
|
|
|
|
|
|
|
|
|
|
buf[off++] = ((pr_reg->pr_res_key >> 56) & 0xff);
|
|
|
|
|
buf[off++] = ((pr_reg->pr_res_key >> 48) & 0xff);
|
|
|
|
|
buf[off++] = ((pr_reg->pr_res_key >> 40) & 0xff);
|
|
|
|
|
buf[off++] = ((pr_reg->pr_res_key >> 32) & 0xff);
|
|
|
|
|
buf[off++] = ((pr_reg->pr_res_key >> 24) & 0xff);
|
|
|
|
|
buf[off++] = ((pr_reg->pr_res_key >> 16) & 0xff);
|
|
|
|
|
buf[off++] = ((pr_reg->pr_res_key >> 8) & 0xff);
|
|
|
|
|
buf[off++] = (pr_reg->pr_res_key & 0xff);
|
|
|
|
|
|
|
|
|
|
add_len += 8;
|
|
|
|
|
}
|
2012-10-08 04:03:19 +00:00
|
|
|
|
spin_unlock(&dev->t10_pr.registration_lock);
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
|
|
|
|
|
buf[4] = ((add_len >> 24) & 0xff);
|
|
|
|
|
buf[5] = ((add_len >> 16) & 0xff);
|
|
|
|
|
buf[6] = ((add_len >> 8) & 0xff);
|
|
|
|
|
buf[7] = (add_len & 0xff);
|
|
|
|
|
|
2012-01-17 00:57:08 +00:00
|
|
|
|
transport_kunmap_data_sg(cmd);
|
2011-07-20 19:13:28 +00:00
|
|
|
|
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
return 0;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/*
|
|
|
|
|
* PERSISTENT_RESERVE_IN Service Action READ_RESERVATION
|
|
|
|
|
*
|
|
|
|
|
* See spc4r17 section 5.7.6.3 and section 6.13.3.2 Table 161 and 162
|
|
|
|
|
*/
|
2012-11-06 20:24:09 +00:00
|
|
|
|
static sense_reason_t
|
|
|
|
|
core_scsi3_pri_read_reservation(struct se_cmd *cmd)
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
{
|
2012-10-08 04:03:19 +00:00
|
|
|
|
struct se_device *dev = cmd->se_dev;
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
struct t10_pr_registration *pr_reg;
|
2011-07-20 19:13:28 +00:00
|
|
|
|
unsigned char *buf;
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
u64 pr_res_key;
|
|
|
|
|
u32 add_len = 16; /* Hardcoded to 16 when a reservation is held. */
|
|
|
|
|
|
|
|
|
|
if (cmd->data_length < 8) {
|
2011-06-08 17:36:43 +00:00
|
|
|
|
pr_err("PRIN SA READ_RESERVATIONS SCSI Data Length: %u"
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
" too small\n", cmd->data_length);
|
2012-11-06 20:24:09 +00:00
|
|
|
|
return TCM_INVALID_CDB_FIELD;
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
}
|
|
|
|
|
|
2012-01-17 00:57:08 +00:00
|
|
|
|
buf = transport_kmap_data_sg(cmd);
|
2012-11-06 20:24:09 +00:00
|
|
|
|
if (!buf)
|
|
|
|
|
return TCM_LOGICAL_UNIT_COMMUNICATION_FAILURE;
|
|
|
|
|
|
2012-10-08 04:03:19 +00:00
|
|
|
|
buf[0] = ((dev->t10_pr.pr_generation >> 24) & 0xff);
|
|
|
|
|
buf[1] = ((dev->t10_pr.pr_generation >> 16) & 0xff);
|
|
|
|
|
buf[2] = ((dev->t10_pr.pr_generation >> 8) & 0xff);
|
|
|
|
|
buf[3] = (dev->t10_pr.pr_generation & 0xff);
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
|
2012-10-08 04:03:19 +00:00
|
|
|
|
spin_lock(&dev->dev_reservation_lock);
|
|
|
|
|
pr_reg = dev->dev_pr_res_holder;
|
2012-07-13 00:34:54 +00:00
|
|
|
|
if (pr_reg) {
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
/*
|
|
|
|
|
* Set the hardcoded Additional Length
|
|
|
|
|
*/
|
|
|
|
|
buf[4] = ((add_len >> 24) & 0xff);
|
|
|
|
|
buf[5] = ((add_len >> 16) & 0xff);
|
|
|
|
|
buf[6] = ((add_len >> 8) & 0xff);
|
|
|
|
|
buf[7] = (add_len & 0xff);
|
|
|
|
|
|
2011-07-20 19:13:28 +00:00
|
|
|
|
if (cmd->data_length < 22)
|
|
|
|
|
goto err;
|
|
|
|
|
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
/*
|
|
|
|
|
* Set the Reservation key.
|
|
|
|
|
*
|
|
|
|
|
* From spc4r17, section 5.7.10:
|
|
|
|
|
* A persistent reservation holder has its reservation key
|
|
|
|
|
* returned in the parameter data from a PERSISTENT
|
|
|
|
|
* RESERVE IN command with READ RESERVATION service action as
|
|
|
|
|
* follows:
|
|
|
|
|
* a) For a persistent reservation of the type Write Exclusive
|
|
|
|
|
* - All Registrants or Exclusive Access  All Regitrants,
|
|
|
|
|
* the reservation key shall be set to zero; or
|
|
|
|
|
* b) For all other persistent reservation types, the
|
|
|
|
|
* reservation key shall be set to the registered
|
|
|
|
|
* reservation key for the I_T nexus that holds the
|
|
|
|
|
* persistent reservation.
|
|
|
|
|
*/
|
|
|
|
|
if ((pr_reg->pr_res_type == PR_TYPE_WRITE_EXCLUSIVE_ALLREG) ||
|
|
|
|
|
(pr_reg->pr_res_type == PR_TYPE_EXCLUSIVE_ACCESS_ALLREG))
|
|
|
|
|
pr_res_key = 0;
|
|
|
|
|
else
|
|
|
|
|
pr_res_key = pr_reg->pr_res_key;
|
|
|
|
|
|
|
|
|
|
buf[8] = ((pr_res_key >> 56) & 0xff);
|
|
|
|
|
buf[9] = ((pr_res_key >> 48) & 0xff);
|
|
|
|
|
buf[10] = ((pr_res_key >> 40) & 0xff);
|
|
|
|
|
buf[11] = ((pr_res_key >> 32) & 0xff);
|
|
|
|
|
buf[12] = ((pr_res_key >> 24) & 0xff);
|
|
|
|
|
buf[13] = ((pr_res_key >> 16) & 0xff);
|
|
|
|
|
buf[14] = ((pr_res_key >> 8) & 0xff);
|
|
|
|
|
buf[15] = (pr_res_key & 0xff);
|
|
|
|
|
/*
|
|
|
|
|
* Set the SCOPE and TYPE
|
|
|
|
|
*/
|
|
|
|
|
buf[21] = (pr_reg->pr_res_scope & 0xf0) |
|
|
|
|
|
(pr_reg->pr_res_type & 0x0f);
|
|
|
|
|
}
|
2011-07-20 19:13:28 +00:00
|
|
|
|
|
|
|
|
|
err:
|
2012-10-08 04:03:19 +00:00
|
|
|
|
spin_unlock(&dev->dev_reservation_lock);
|
2012-01-17 00:57:08 +00:00
|
|
|
|
transport_kunmap_data_sg(cmd);
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
|
|
|
|
|
return 0;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/*
|
|
|
|
|
* PERSISTENT_RESERVE_IN Service Action REPORT_CAPABILITIES
|
|
|
|
|
*
|
|
|
|
|
* See spc4r17 section 6.13.4 Table 165
|
|
|
|
|
*/
|
2012-11-06 20:24:09 +00:00
|
|
|
|
static sense_reason_t
|
|
|
|
|
core_scsi3_pri_report_capabilities(struct se_cmd *cmd)
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
{
|
2011-07-19 10:26:37 +00:00
|
|
|
|
struct se_device *dev = cmd->se_dev;
|
2012-10-08 04:03:19 +00:00
|
|
|
|
struct t10_reservation *pr_tmpl = &dev->t10_pr;
|
2011-07-20 19:13:28 +00:00
|
|
|
|
unsigned char *buf;
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
u16 add_len = 8; /* Hardcoded to 8. */
|
|
|
|
|
|
|
|
|
|
if (cmd->data_length < 6) {
|
2011-06-08 17:36:43 +00:00
|
|
|
|
pr_err("PRIN SA REPORT_CAPABILITIES SCSI Data Length:"
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
" %u too small\n", cmd->data_length);
|
2012-11-06 20:24:09 +00:00
|
|
|
|
return TCM_INVALID_CDB_FIELD;
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
}
|
|
|
|
|
|
2012-01-17 00:57:08 +00:00
|
|
|
|
buf = transport_kmap_data_sg(cmd);
|
2012-11-06 20:24:09 +00:00
|
|
|
|
if (!buf)
|
|
|
|
|
return TCM_LOGICAL_UNIT_COMMUNICATION_FAILURE;
|
2011-07-20 19:13:28 +00:00
|
|
|
|
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
buf[0] = ((add_len << 8) & 0xff);
|
|
|
|
|
buf[1] = (add_len & 0xff);
|
|
|
|
|
buf[2] |= 0x10; /* CRH: Compatible Reservation Hanlding bit. */
|
|
|
|
|
buf[2] |= 0x08; /* SIP_C: Specify Initiator Ports Capable bit */
|
|
|
|
|
buf[2] |= 0x04; /* ATP_C: All Target Ports Capable bit */
|
|
|
|
|
buf[2] |= 0x01; /* PTPL_C: Persistence across Target Power Loss bit */
|
|
|
|
|
/*
|
|
|
|
|
* We are filling in the PERSISTENT RESERVATION TYPE MASK below, so
|
|
|
|
|
* set the TMV: Task Mask Valid bit.
|
|
|
|
|
*/
|
|
|
|
|
buf[3] |= 0x80;
|
|
|
|
|
/*
|
|
|
|
|
* Change ALLOW COMMANDs to 0x20 or 0x40 later from Table 166
|
|
|
|
|
*/
|
|
|
|
|
buf[3] |= 0x10; /* ALLOW COMMANDs field 001b */
|
|
|
|
|
/*
|
|
|
|
|
* PTPL_A: Persistence across Target Power Loss Active bit
|
|
|
|
|
*/
|
|
|
|
|
if (pr_tmpl->pr_aptpl_active)
|
|
|
|
|
buf[3] |= 0x01;
|
|
|
|
|
/*
|
|
|
|
|
* Setup the PERSISTENT RESERVATION TYPE MASK from Table 167
|
|
|
|
|
*/
|
|
|
|
|
buf[4] |= 0x80; /* PR_TYPE_EXCLUSIVE_ACCESS_ALLREG */
|
|
|
|
|
buf[4] |= 0x40; /* PR_TYPE_EXCLUSIVE_ACCESS_REGONLY */
|
|
|
|
|
buf[4] |= 0x20; /* PR_TYPE_WRITE_EXCLUSIVE_REGONLY */
|
|
|
|
|
buf[4] |= 0x08; /* PR_TYPE_EXCLUSIVE_ACCESS */
|
|
|
|
|
buf[4] |= 0x02; /* PR_TYPE_WRITE_EXCLUSIVE */
|
|
|
|
|
buf[5] |= 0x01; /* PR_TYPE_EXCLUSIVE_ACCESS_ALLREG */
|
|
|
|
|
|
2012-01-17 00:57:08 +00:00
|
|
|
|
transport_kunmap_data_sg(cmd);
|
2011-07-20 19:13:28 +00:00
|
|
|
|
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
return 0;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/*
|
|
|
|
|
* PERSISTENT_RESERVE_IN Service Action READ_FULL_STATUS
|
|
|
|
|
*
|
|
|
|
|
* See spc4r17 section 6.13.5 Table 168 and 169
|
|
|
|
|
*/
|
2012-11-06 20:24:09 +00:00
|
|
|
|
static sense_reason_t
|
|
|
|
|
core_scsi3_pri_read_full_status(struct se_cmd *cmd)
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
{
|
2012-10-08 04:03:19 +00:00
|
|
|
|
struct se_device *dev = cmd->se_dev;
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
struct se_node_acl *se_nacl;
|
|
|
|
|
struct se_portal_group *se_tpg;
|
|
|
|
|
struct t10_pr_registration *pr_reg, *pr_reg_tmp;
|
2012-10-08 04:03:19 +00:00
|
|
|
|
struct t10_reservation *pr_tmpl = &dev->t10_pr;
|
2011-07-20 19:13:28 +00:00
|
|
|
|
unsigned char *buf;
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
u32 add_desc_len = 0, add_len = 0, desc_len, exp_desc_len;
|
|
|
|
|
u32 off = 8; /* off into first Full Status descriptor */
|
|
|
|
|
int format_code = 0;
|
|
|
|
|
|
|
|
|
|
if (cmd->data_length < 8) {
|
2011-06-08 17:36:43 +00:00
|
|
|
|
pr_err("PRIN SA READ_FULL_STATUS SCSI Data Length: %u"
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
" too small\n", cmd->data_length);
|
2012-11-06 20:24:09 +00:00
|
|
|
|
return TCM_INVALID_CDB_FIELD;
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
}
|
|
|
|
|
|
2012-01-17 00:57:08 +00:00
|
|
|
|
buf = transport_kmap_data_sg(cmd);
|
2012-11-06 20:24:09 +00:00
|
|
|
|
if (!buf)
|
|
|
|
|
return TCM_LOGICAL_UNIT_COMMUNICATION_FAILURE;
|
2011-07-20 19:13:28 +00:00
|
|
|
|
|
2012-10-08 04:03:19 +00:00
|
|
|
|
buf[0] = ((dev->t10_pr.pr_generation >> 24) & 0xff);
|
|
|
|
|
buf[1] = ((dev->t10_pr.pr_generation >> 16) & 0xff);
|
|
|
|
|
buf[2] = ((dev->t10_pr.pr_generation >> 8) & 0xff);
|
|
|
|
|
buf[3] = (dev->t10_pr.pr_generation & 0xff);
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
|
|
|
|
|
spin_lock(&pr_tmpl->registration_lock);
|
|
|
|
|
list_for_each_entry_safe(pr_reg, pr_reg_tmp,
|
|
|
|
|
&pr_tmpl->registration_list, pr_reg_list) {
|
|
|
|
|
|
|
|
|
|
se_nacl = pr_reg->pr_reg_nacl;
|
|
|
|
|
se_tpg = pr_reg->pr_reg_nacl->se_tpg;
|
|
|
|
|
add_desc_len = 0;
|
|
|
|
|
|
|
|
|
|
atomic_inc(&pr_reg->pr_res_holders);
|
|
|
|
|
smp_mb__after_atomic_inc();
|
|
|
|
|
spin_unlock(&pr_tmpl->registration_lock);
|
|
|
|
|
/*
|
|
|
|
|
* Determine expected length of $FABRIC_MOD specific
|
|
|
|
|
* TransportID full status descriptor..
|
|
|
|
|
*/
|
2011-07-19 08:55:10 +00:00
|
|
|
|
exp_desc_len = se_tpg->se_tpg_tfo->tpg_get_pr_transport_id_len(
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
se_tpg, se_nacl, pr_reg, &format_code);
|
|
|
|
|
|
|
|
|
|
if ((exp_desc_len + add_len) > cmd->data_length) {
|
2011-06-08 17:36:43 +00:00
|
|
|
|
pr_warn("SPC-3 PRIN READ_FULL_STATUS ran"
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
" out of buffer: %d\n", cmd->data_length);
|
|
|
|
|
spin_lock(&pr_tmpl->registration_lock);
|
|
|
|
|
atomic_dec(&pr_reg->pr_res_holders);
|
|
|
|
|
smp_mb__after_atomic_dec();
|
|
|
|
|
break;
|
|
|
|
|
}
|
|
|
|
|
/*
|
|
|
|
|
* Set RESERVATION KEY
|
|
|
|
|
*/
|
|
|
|
|
buf[off++] = ((pr_reg->pr_res_key >> 56) & 0xff);
|
|
|
|
|
buf[off++] = ((pr_reg->pr_res_key >> 48) & 0xff);
|
|
|
|
|
buf[off++] = ((pr_reg->pr_res_key >> 40) & 0xff);
|
|
|
|
|
buf[off++] = ((pr_reg->pr_res_key >> 32) & 0xff);
|
|
|
|
|
buf[off++] = ((pr_reg->pr_res_key >> 24) & 0xff);
|
|
|
|
|
buf[off++] = ((pr_reg->pr_res_key >> 16) & 0xff);
|
|
|
|
|
buf[off++] = ((pr_reg->pr_res_key >> 8) & 0xff);
|
|
|
|
|
buf[off++] = (pr_reg->pr_res_key & 0xff);
|
|
|
|
|
off += 4; /* Skip Over Reserved area */
|
|
|
|
|
|
|
|
|
|
/*
|
|
|
|
|
* Set ALL_TG_PT bit if PROUT SA REGISTER had this set.
|
|
|
|
|
*/
|
|
|
|
|
if (pr_reg->pr_reg_all_tg_pt)
|
|
|
|
|
buf[off] = 0x02;
|
|
|
|
|
/*
|
|
|
|
|
* The struct se_lun pointer will be present for the
|
|
|
|
|
* reservation holder for PR_HOLDER bit.
|
|
|
|
|
*
|
|
|
|
|
* Also, if this registration is the reservation
|
|
|
|
|
* holder, fill in SCOPE and TYPE in the next byte.
|
|
|
|
|
*/
|
|
|
|
|
if (pr_reg->pr_res_holder) {
|
|
|
|
|
buf[off++] |= 0x01;
|
|
|
|
|
buf[off++] = (pr_reg->pr_res_scope & 0xf0) |
|
|
|
|
|
(pr_reg->pr_res_type & 0x0f);
|
|
|
|
|
} else
|
|
|
|
|
off += 2;
|
|
|
|
|
|
|
|
|
|
off += 4; /* Skip over reserved area */
|
|
|
|
|
/*
|
|
|
|
|
* From spc4r17 6.3.15:
|
|
|
|
|
*
|
|
|
|
|
* If the ALL_TG_PT bit set to zero, the RELATIVE TARGET PORT
|
|
|
|
|
* IDENTIFIER field contains the relative port identifier (see
|
|
|
|
|
* 3.1.120) of the target port that is part of the I_T nexus
|
|
|
|
|
* described by this full status descriptor. If the ALL_TG_PT
|
|
|
|
|
* bit is set to one, the contents of the RELATIVE TARGET PORT
|
|
|
|
|
* IDENTIFIER field are not defined by this standard.
|
|
|
|
|
*/
|
2011-06-08 17:36:43 +00:00
|
|
|
|
if (!pr_reg->pr_reg_all_tg_pt) {
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
struct se_port *port = pr_reg->pr_reg_tg_pt_lun->lun_sep;
|
|
|
|
|
|
|
|
|
|
buf[off++] = ((port->sep_rtpi >> 8) & 0xff);
|
|
|
|
|
buf[off++] = (port->sep_rtpi & 0xff);
|
|
|
|
|
} else
|
2012-08-16 13:43:13 +00:00
|
|
|
|
off += 2; /* Skip over RELATIVE TARGET PORT IDENTIFIER */
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
|
|
|
|
|
/*
|
|
|
|
|
* Now, have the $FABRIC_MOD fill in the protocol identifier
|
|
|
|
|
*/
|
2011-07-19 08:55:10 +00:00
|
|
|
|
desc_len = se_tpg->se_tpg_tfo->tpg_get_pr_transport_id(se_tpg,
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
se_nacl, pr_reg, &format_code, &buf[off+4]);
|
|
|
|
|
|
|
|
|
|
spin_lock(&pr_tmpl->registration_lock);
|
|
|
|
|
atomic_dec(&pr_reg->pr_res_holders);
|
|
|
|
|
smp_mb__after_atomic_dec();
|
|
|
|
|
/*
|
|
|
|
|
* Set the ADDITIONAL DESCRIPTOR LENGTH
|
|
|
|
|
*/
|
|
|
|
|
buf[off++] = ((desc_len >> 24) & 0xff);
|
|
|
|
|
buf[off++] = ((desc_len >> 16) & 0xff);
|
|
|
|
|
buf[off++] = ((desc_len >> 8) & 0xff);
|
|
|
|
|
buf[off++] = (desc_len & 0xff);
|
|
|
|
|
/*
|
|
|
|
|
* Size of full desctipor header minus TransportID
|
|
|
|
|
* containing $FABRIC_MOD specific) initiator device/port
|
|
|
|
|
* WWN information.
|
|
|
|
|
*
|
|
|
|
|
* See spc4r17 Section 6.13.5 Table 169
|
|
|
|
|
*/
|
|
|
|
|
add_desc_len = (24 + desc_len);
|
|
|
|
|
|
|
|
|
|
off += desc_len;
|
|
|
|
|
add_len += add_desc_len;
|
|
|
|
|
}
|
|
|
|
|
spin_unlock(&pr_tmpl->registration_lock);
|
|
|
|
|
/*
|
|
|
|
|
* Set ADDITIONAL_LENGTH
|
|
|
|
|
*/
|
|
|
|
|
buf[4] = ((add_len >> 24) & 0xff);
|
|
|
|
|
buf[5] = ((add_len >> 16) & 0xff);
|
|
|
|
|
buf[6] = ((add_len >> 8) & 0xff);
|
|
|
|
|
buf[7] = (add_len & 0xff);
|
|
|
|
|
|
2012-01-17 00:57:08 +00:00
|
|
|
|
transport_kunmap_data_sg(cmd);
|
2011-07-20 19:13:28 +00:00
|
|
|
|
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
return 0;
|
|
|
|
|
}
|
|
|
|
|
|
2012-11-06 20:24:09 +00:00
|
|
|
|
sense_reason_t
|
|
|
|
|
target_scsi3_emulate_pr_in(struct se_cmd *cmd)
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
{
|
2012-11-06 20:24:09 +00:00
|
|
|
|
sense_reason_t ret;
|
2011-11-03 21:50:42 +00:00
|
|
|
|
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
/*
|
|
|
|
|
* Following spc2r20 5.5.1 Reservations overview:
|
|
|
|
|
*
|
|
|
|
|
* If a logical unit has been reserved by any RESERVE command and is
|
|
|
|
|
* still reserved by any initiator, all PERSISTENT RESERVE IN and all
|
|
|
|
|
* PERSISTENT RESERVE OUT commands shall conflict regardless of
|
|
|
|
|
* initiator or service action and shall terminate with a RESERVATION
|
|
|
|
|
* CONFLICT status.
|
|
|
|
|
*/
|
2012-10-08 04:03:19 +00:00
|
|
|
|
if (cmd->se_dev->dev_reservation_flags & DRF_SPC2_RESERVATIONS) {
|
2011-06-08 17:36:43 +00:00
|
|
|
|
pr_err("Received PERSISTENT_RESERVE CDB while legacy"
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
" SPC-2 reservation is held, returning"
|
|
|
|
|
" RESERVATION_CONFLICT\n");
|
2012-11-06 20:24:09 +00:00
|
|
|
|
return TCM_RESERVATION_CONFLICT;
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
}
|
|
|
|
|
|
2011-11-03 21:50:41 +00:00
|
|
|
|
switch (cmd->t_task_cdb[1] & 0x1f) {
|
|
|
|
|
case PRI_READ_KEYS:
|
2011-11-03 21:50:44 +00:00
|
|
|
|
ret = core_scsi3_pri_read_keys(cmd);
|
|
|
|
|
break;
|
2011-11-03 21:50:41 +00:00
|
|
|
|
case PRI_READ_RESERVATION:
|
2011-11-03 21:50:44 +00:00
|
|
|
|
ret = core_scsi3_pri_read_reservation(cmd);
|
|
|
|
|
break;
|
2011-11-03 21:50:41 +00:00
|
|
|
|
case PRI_REPORT_CAPABILITIES:
|
2011-11-03 21:50:44 +00:00
|
|
|
|
ret = core_scsi3_pri_report_capabilities(cmd);
|
|
|
|
|
break;
|
2011-11-03 21:50:41 +00:00
|
|
|
|
case PRI_READ_FULL_STATUS:
|
2011-11-03 21:50:44 +00:00
|
|
|
|
ret = core_scsi3_pri_read_full_status(cmd);
|
|
|
|
|
break;
|
2011-11-03 21:50:41 +00:00
|
|
|
|
default:
|
|
|
|
|
pr_err("Unknown PERSISTENT_RESERVE_IN service"
|
|
|
|
|
" action: 0x%02x\n", cmd->t_task_cdb[1] & 0x1f);
|
2012-11-06 20:24:09 +00:00
|
|
|
|
return TCM_INVALID_CDB_FIELD;
|
2011-11-03 21:50:44 +00:00
|
|
|
|
}
|
|
|
|
|
|
2012-04-23 15:35:33 +00:00
|
|
|
|
if (!ret)
|
|
|
|
|
target_complete_cmd(cmd, GOOD);
|
2011-11-03 21:50:44 +00:00
|
|
|
|
return ret;
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
}
|
|
|
|
|
|
2012-11-06 20:24:09 +00:00
|
|
|
|
sense_reason_t
|
|
|
|
|
target_check_reservation(struct se_cmd *cmd)
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
{
|
2012-10-10 21:37:15 +00:00
|
|
|
|
struct se_device *dev = cmd->se_dev;
|
2012-11-06 20:24:09 +00:00
|
|
|
|
sense_reason_t ret;
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
|
2012-10-10 21:37:15 +00:00
|
|
|
|
if (!cmd->se_sess)
|
|
|
|
|
return 0;
|
|
|
|
|
if (dev->se_hba->hba_flags & HBA_FLAGS_INTERNAL_USE)
|
|
|
|
|
return 0;
|
|
|
|
|
if (dev->transport->transport_type == TRANSPORT_PLUGIN_PHBA_PDEV)
|
|
|
|
|
return 0;
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
|
2012-10-10 21:37:15 +00:00
|
|
|
|
spin_lock(&dev->dev_reservation_lock);
|
|
|
|
|
if (dev->dev_reservation_flags & DRF_SPC2_RESERVATIONS)
|
|
|
|
|
ret = target_scsi2_reservation_check(cmd);
|
|
|
|
|
else
|
|
|
|
|
ret = target_scsi3_pr_reservation_check(cmd);
|
|
|
|
|
spin_unlock(&dev->dev_reservation_lock);
|
2012-10-08 04:03:19 +00:00
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2012-10-10 21:37:15 +00:00
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return ret;
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
}
|