Implement Docker on ZFS

Signed-off-by: Arthur Gautier <baloo@gandi.net>
Signed-off-by: Jörg Thalheim <joerg@higgsboson.tk>
master
Jörg Thalheim 2014-09-03 16:26:19 +02:00 committed by Tibor Vass
parent 313659dd18
commit 35172ee021
1 changed files with 7 additions and 1 deletions

View File

@ -250,7 +250,7 @@ precedence over `HTTP_PROXY`.
### Daemon storage-driver option ### Daemon storage-driver option
The Docker daemon has support for several different image layer storage drivers: `aufs`, The Docker daemon has support for several different image layer storage drivers: `aufs`,
`devicemapper`, `btrfs` and `overlay`. `devicemapper`, `btrfs`, `zfs` and `overlay`.
The `aufs` driver is the oldest, but is based on a Linux kernel patch-set that The `aufs` driver is the oldest, but is based on a Linux kernel patch-set that
is unlikely to be merged into the main kernel. These are also known to cause some is unlikely to be merged into the main kernel. These are also known to cause some
@ -272,6 +272,12 @@ explains how to tune your existing setup without the use of options.
The `btrfs` driver is very fast for `docker build` - but like `devicemapper` does not The `btrfs` driver is very fast for `docker build` - but like `devicemapper` does not
share executable memory between devices. Use `docker -d -s btrfs -g /mnt/btrfs_partition`. share executable memory between devices. Use `docker -d -s btrfs -g /mnt/btrfs_partition`.
The `zfs` driver is probably not fast as `btrfs` but has a longer track record
on stability. Thanks to `Single Copy ARC` shared blocks between clones will be
cached only once. Use `docker -d -s zfs`. To select a different zfs filesystem
as backingstore use the storage option `zfs.fsname`:
`docker -d -s zfs --storage-opt zfs.fsname=zroot/docker`
The `overlay` is a very fast union filesystem. It is now merged in the main The `overlay` is a very fast union filesystem. It is now merged in the main
Linux kernel as of [3.18.0](https://lkml.org/lkml/2014/10/26/137). Linux kernel as of [3.18.0](https://lkml.org/lkml/2014/10/26/137).
Call `docker -d -s overlay` to use it. Call `docker -d -s overlay` to use it.