Commit graph

40 commits

Author SHA1 Message Date
Yehuda Sadeh
e56fa10e92 ceph: generalize mon requests, add pool op support
Generalize the current statfs synchronous requests, and support pool_ops.

Signed-off-by: Yehuda Sadeh <yehuda@hq.newdream.net>
Signed-off-by: Sage Weil <sage@newdream.net>
2010-08-10 14:41:25 -07:00
Yehuda Sadeh
03066f2345 ceph: use complete_all and wake_up_all
This fixes an issue triggered by running concurrent syncs. One of the syncs
would go through while the other would just hang indefinitely. In any case, we
never actually want to wake a single waiter, so the *_all functions should
be used.

Signed-off-by: Yehuda Sadeh <yehuda@hq.newdream.net>
Signed-off-by: Sage Weil <sage@newdream.net>
2010-07-27 13:11:17 -07:00
Yehuda Sadeh
0cf5537b15 ceph: some endianity fixes
Fix some problems that came up with sparse.

Signed-off-by: Yehuda Sadeh <yehuda@hq.newdream.net>
Signed-off-by: Sage Weil <sage@newdream.net>
2010-06-13 10:34:36 -07:00
Yehuda Sadeh
205475679a ceph: fix memory leak in statfs
Freeing the statfs request structure when required.

Signed-off-by: Yehuda Sadeh <yehuda@hq.newdream.net>
Signed-off-by: Sage Weil <sage@newdream.net>
2010-06-01 16:56:02 -07:00
Sage Weil
09c4d6a7d4 ceph: do not resend mon requests on auth ticket renewal
We only want to send pending mon requests when we successfully
authenticate.  If we are already authenticated, like when we renew our
ticket, there is no need to resend pending requests.

Signed-off-by: Sage Weil <sage@newdream.net>
2010-05-29 09:12:38 -07:00
Sage Weil
240ed68eb5 ceph: reuse mon subscribe message instead of allocated anew
Use the same message, allocated during startup.  No need to reallocate a
new one each time around (and potentially ENOMEM).

Signed-off-by: Sage Weil <sage@newdream.net>
2010-05-21 16:26:11 -07:00
Sage Weil
970690012c ceph: avoid resending queued message to monitor
The auth_reply handler will (re)send any pending requests.  For the
initial mon authenticate phase, that's correct, but when a auth ticket
renewal races with an in-flight request, we may resend a request message
that is already in flight.  Avoid this by revoking the message before
sending it.

We should also avoid resending requests at all during ticket renewal; that
will come soon.

Signed-off-by: Sage Weil <sage@newdream.net>
2010-05-21 15:01:22 -07:00
Tobias Klauser
9e32789f63 ceph: Storage class should be before const qualifier
The C99 specification states in section 6.11.5:

The placement of a storage-class specifier other than at the beginning
of the declaration specifiers in a declaration is an obsolescent
feature.

Signed-off-by: Tobias Klauser <tklauser@distanz.ch>
Signed-off-by: Sage Weil <sage@newdream.net>
2010-05-21 15:01:21 -07:00
Yehuda Sadeh
34d23762d9 ceph: all allocation functions should get gfp_mask
This is essential, as for the rados block device we'll need
to run in different contexts that would need flags that
are other than GFP_NOFS.

Signed-off-by: Yehuda Sadeh <yehuda@hq.newdream.net>
Signed-off-by: Sage Weil <sage@newdream.net>
2010-05-17 15:25:42 -07:00
Julia Lawall
cffe7b6d8c ceph: Use kzalloc
Use kzalloc rather than the combination of kmalloc and memset.

The semantic patch that makes this change is as follows:
(http://coccinelle.lip6.fr/)

// <smpl>
@@
expression x,size,flags;
statement S;
@@

-x = kmalloc(size,flags);
+x = kzalloc(size,flags);
 if (x == NULL) S
-memset(x, 0, size);
// </smpl>

Signed-off-by: Julia Lawall <julia@diku.dk>
Signed-off-by: Sage Weil <sage@newdream.net>
2010-05-17 15:25:40 -07:00
Yehuda Sadeh
f8c76f6f25 ceph: make mon client statfs handling more generic
This is being done so that we could reuse the statfs
infrastructure with other requests that return values.

Signed-off-by: Yehuda Sadeh <yehuda@hq.newdream.net>
Signed-off-by: Sage Weil <sage@newdream.net>
2010-05-17 15:25:33 -07:00
Sage Weil
bb257664f7 ceph: simplify ceph_msg_new
We only need to pass in front_len.  Callers can attach any other payload
pieces (middle, data) as they see fit.

Signed-off-by: Sage Weil <sage@newdream.net>
2010-05-17 15:25:19 -07:00
Sage Weil
a79832f26b ceph: make ceph_msg_new return NULL on failure; clean up, fix callers
Returning ERR_PTR(-ENOMEM) is useless extra work.  Return NULL on failure
instead, and fix up the callers (about half of which were wrong anyway).

Signed-off-by: Sage Weil <sage@newdream.net>
2010-05-17 15:25:18 -07:00
Sage Weil
7c315c552c ceph: drop unnecessary msgpool for mon_client subscribe_ack
Preallocate a single message to reuse instead.

Signed-off-by: Sage Weil <sage@newdream.net>
2010-05-17 15:25:16 -07:00
Sage Weil
6694d6b95c ceph: drop unnecessary msgpool for mon_client auth_reply
Preallocate a single reply message that we can reuse instead.

Signed-off-by: Sage Weil <sage@newdream.net>
2010-05-17 15:25:15 -07:00
Sage Weil
3143edd3a1 ceph: clean up statfs
Avoid unnecessary msgpool.  Preallocate reply.  Fix use-after-free race.

Signed-off-by: Sage Weil <sage@newdream.net>
2010-05-17 15:25:15 -07:00
Tejun Heo
5a0e3ad6af include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h
percpu.h is included by sched.h and module.h and thus ends up being
included when building most .c files.  percpu.h includes slab.h which
in turn includes gfp.h making everything defined by the two files
universally available and complicating inclusion dependencies.

percpu.h -> slab.h dependency is about to be removed.  Prepare for
this change by updating users of gfp and slab facilities include those
headers directly instead of assuming availability.  As this conversion
needs to touch large number of source files, the following script is
used as the basis of conversion.

  http://userweb.kernel.org/~tj/misc/slabh-sweep.py

The script does the followings.

* Scan files for gfp and slab usages and update includes such that
  only the necessary includes are there.  ie. if only gfp is used,
  gfp.h, if slab is used, slab.h.

* When the script inserts a new include, it looks at the include
  blocks and try to put the new include such that its order conforms
  to its surrounding.  It's put in the include block which contains
  core kernel includes, in the same order that the rest are ordered -
  alphabetical, Christmas tree, rev-Xmas-tree or at the end if there
  doesn't seem to be any matching order.

* If the script can't find a place to put a new include (mostly
  because the file doesn't have fitting include block), it prints out
  an error message indicating which .h file needs to be added to the
  file.

The conversion was done in the following steps.

1. The initial automatic conversion of all .c files updated slightly
   over 4000 files, deleting around 700 includes and adding ~480 gfp.h
   and ~3000 slab.h inclusions.  The script emitted errors for ~400
   files.

2. Each error was manually checked.  Some didn't need the inclusion,
   some needed manual addition while adding it to implementation .h or
   embedding .c file was more appropriate for others.  This step added
   inclusions to around 150 files.

3. The script was run again and the output was compared to the edits
   from #2 to make sure no file was left behind.

4. Several build tests were done and a couple of problems were fixed.
   e.g. lib/decompress_*.c used malloc/free() wrappers around slab
   APIs requiring slab.h to be added manually.

5. The script was run on all .h files but without automatically
   editing them as sprinkling gfp.h and slab.h inclusions around .h
   files could easily lead to inclusion dependency hell.  Most gfp.h
   inclusion directives were ignored as stuff from gfp.h was usually
   wildly available and often used in preprocessor macros.  Each
   slab.h inclusion directive was examined and added manually as
   necessary.

6. percpu.h was updated not to include slab.h.

7. Build test were done on the following configurations and failures
   were fixed.  CONFIG_GCOV_KERNEL was turned off for all tests (as my
   distributed build env didn't work with gcov compiles) and a few
   more options had to be turned off depending on archs to make things
   build (like ipr on powerpc/64 which failed due to missing writeq).

   * x86 and x86_64 UP and SMP allmodconfig and a custom test config.
   * powerpc and powerpc64 SMP allmodconfig
   * sparc and sparc64 SMP allmodconfig
   * ia64 SMP allmodconfig
   * s390 SMP allmodconfig
   * alpha SMP allmodconfig
   * um on x86_64 SMP allmodconfig

8. percpu.h modifications were reverted so that it could be applied as
   a separate patch and serve as bisection point.

Given the fact that I had only a couple of failures from tests on step
6, I'm fairly confident about the coverage of this conversion patch.
If there is a breakage, it's likely to be something in one of the arch
headers which should be easily discoverable easily on most builds of
the specific arch.

Signed-off-by: Tejun Heo <tj@kernel.org>
Guess-its-ok-by: Christoph Lameter <cl@linux-foundation.org>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Lee Schermerhorn <Lee.Schermerhorn@hp.com>
2010-03-30 22:02:32 +09:00
Sage Weil
5b3a4db3e4 ceph: fix up unexpected message handling
Fix skipping of unexpected message types from osd, mon.

Clean up pr_info and debug output.

Signed-off-by: Sage Weil <sage@newdream.net>
2010-02-23 14:26:29 -08:00
Sage Weil
5ce6e9dbe6 ceph: fix authentication races, auth_none oops
Call __validate_auth() under monc->mutex, and use helper for
initial hello so that the pending_auth flag is set.  This fixes
possible races in which we have an authentication request (hello
or otherwise) pending and send another one.  In particular, with
auth_none, we _never_ want to call ceph_build_auth() from
__validate_auth(), since the ->build_request() method is NULL.

Signed-off-by: Sage Weil <sage@newdream.net>
2010-02-16 22:01:11 -08:00
Sage Weil
85ff03f6bf ceph: use rbtree for mon statfs requests
An rbtree is lighter weight, particularly given we will generally have
very few in-flight statfs requests.

Signed-off-by: Sage Weil <sage@newdream.net>
2010-02-16 22:01:10 -08:00
Sage Weil
9bd2e6f8ba ceph: allow renewal of auth credentials
Add infrastructure to allow the mon_client to periodically renew its auth
credentials.  Also add a messenger callback that will force such a renewal
if a peer rejects our authenticator.

Signed-off-by: Yehuda Sadeh <yehuda@hq.newdream.net>
Signed-off-by: Sage Weil <sage@newdream.net>
2010-02-10 15:04:47 -08:00
Yehuda Sadeh
0547a9b30a ceph: alloc message data pages and check if tid exists
Now doing it in the same callback that is also responsible for
allocating the 'front' part of the message. If we get a message
that we haven't got a corresponding tid for, mark it for skipping.

Moving the mutex unlock/lock from the osd alloc_msg callback
to the calling function in the messenger.

Signed-off-by: Yehuda Sadeh <yehuda@hq.newdream.net>
2010-01-25 12:57:46 -08:00
Yehuda Sadeh
2450418c47 ceph: allocate middle of message before stating to read
Both front and middle parts of the message are now being
allocated at the ceph_alloc_msg().

Signed-off-by: Yehuda Sadeh <yehuda@hq.newdream.net>
2010-01-25 12:57:37 -08:00
Sage Weil
103e2d3ae5 ceph: remove unused erank field
The ceph_entity_addr erank field is obsolete; remove it.  Get rid of
trivial addr comparison helpers while we're at it.

Signed-off-by: Sage Weil <sage@newdream.net>
2010-01-14 12:23:38 -08:00
Sage Weil
6df058c025 ceph: include transaction id in ceph_msg_header (protocol change)
Many (most?) message types include a transaction id.  By including it in
the fixed size header, we always have it available even when we are unable
to allocate memory for the (larger, variable sized) message body.  This
will allow us to error out the appropriate request instead of (silently)
dropping the reply.

Signed-off-by: Sage Weil <sage@newdream.net>
2009-12-23 08:17:22 -08:00
Sage Weil
9ec7cab14e ceph: hex dump corrupt server data to KERN_DEBUG
Also, print fsid using standard format, NOT hex dump.

Signed-off-by: Sage Weil <sage@newdream.net>
2009-12-21 16:39:52 -08:00
Sage Weil
d4a780ce88 ceph: fix leak of monc mutex
Fix leak of monc mutex on ENOMEM or bad fsid when receiving new mon map.
Audited all other users.

Signed-off-by: Sage Weil <sage@newdream.net>
2009-12-11 08:59:11 -08:00
Sage Weil
50b885b96c ceph: whitespace cleanup
Signed-off-by: Sage Weil <sage@newdream.net>
2009-12-03 14:59:44 -08:00
Sage Weil
b19a29af74 ceph: remove dead code
Left over from mount/auth protocol changes.

Signed-off-by: Sage Weil <sage@newdream.net>
2009-11-20 15:17:24 -08:00
Sage Weil
0743304d87 ceph: fix debugfs entry, simplify fsid checks
We may first learn our fsid from any of the mon, osd, or mds maps
(whichever the monitor sends first).  Consolidate checks in a single
helper.  Initialize the client debugfs entry then, since we need the
fsid (and global_id) for the directory name.

Also remove dead mount code.

Signed-off-by: Sage Weil <sage@newdream.net>
2009-11-20 14:24:27 -08:00
Sage Weil
4e7a5dcd1b ceph: negotiate authentication protocol; implement AUTH_NONE protocol
When we open a monitor session, we send an initial AUTH message listing
the auth protocols we support, our entity name, and (possibly) a previously
assigned global_id.  The monitor chooses a protocol and responds with an
initial message.

Initially implement AUTH_NONE, a dummy protocol that provides no security,
but works within the new framework.  It generates 'authorizers' that are
used when connecting to (mds, osd) services that simply state our entity
name and global_id.

This is a wire protocol change.

Signed-off-by: Sage Weil <sage@newdream.net>
2009-11-18 16:19:57 -08:00
Sage Weil
63f2d21195 ceph: use fixed endian encoding for ceph_entity_addr
We exchange struct ceph_entity_addr over the wire and store it on disk.
The sockaddr_storage.ss_family field, however, is host endianness.  So,
fix ss_family endianness to big endian when sending/receiving over the
wire.

Signed-off-by: Sage Weil <sage@newdream.net>
2009-11-03 15:17:56 -08:00
Sage Weil
6b8051855d ceph: allocate and parse mount args before client instance
This simplifies much of the error handling during mount.  It also means
that we have the mount args before client creation, and we can initialize
based on those options.

Signed-off-by: Sage Weil <sage@newdream.net>
2009-10-27 11:57:03 -07:00
Sage Weil
8f3bc053c6 ceph: warn on allocation from msgpool with larger front_len
Pass the front_len we need when pulling a message off a msgpool,
and WARN if it is greater than the pool's size.  Then try to
allocate a new message (to continue without failing).

Signed-off-by: Sage Weil <sage@newdream.net>
2009-10-15 18:14:43 -07:00
Sage Weil
07bd10fb98 ceph: correct subscribe_ack msgpool payload size
Defined a struct for the SUBSCRIBE_ACK, and use that to size
the msgpool.

Signed-off-by: Sage Weil <sage@newdream.net>
2009-10-15 18:14:42 -07:00
Sage Weil
c89136ea42 ceph: convert encode/decode macros to inlines
This avoids the fugly pass by reference and makes the code a bit easier
to read.

Signed-off-by: Sage Weil <sage@newdream.net>
2009-10-14 09:59:09 -07:00
Sage Weil
8fc57da4d3 ceph: ignore trailing data in monamp
This lets us extend the format more easily.

Signed-off-by: Sage Weil <sage@newdream.net>
2009-10-12 10:29:24 -07:00
Sage Weil
13e38c8ae7 ceph: update to mon client protocol v15
The mon request headers now include session_mon information that must
be properly initialized.

Signed-off-by: Sage Weil <sage@newdream.net>
2009-10-09 16:39:27 -07:00
Sage Weil
0656d11ba6 ceph: renew mon subscription before it expires
Be conservative: renew subscription once half the interval has expired.

Do not reuse sub expiration to control hunting.

Signed-off-by: Sage Weil <sage@newdream.net>
2009-10-08 10:39:08 -07:00
Sage Weil
ba75bb98cf ceph: monitor client
The monitor cluster is responsible for managing cluster membership
and state.  The monitor client handles what minimal interaction
the Ceph client has with it: checking for updated versions of the
MDS and OSD maps, getting statfs() information, and unmounting.

Signed-off-by: Sage Weil <sage@newdream.net>
2009-10-06 11:31:11 -07:00