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Accepting request 248639 from Virtualization

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OBS-URL: https://build.opensuse.org/request/show/248639
OBS-URL: https://build.opensuse.org/package/show/openSUSE:Factory/docker?expand=0&rev=6
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Stephan Kulow 2014-09-12 08:03:38 +00:00 committed by Git OBS Bridge
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35
README_SUSE.md
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@ -106,19 +106,40 @@ At the time of writing, upstream is working on a `libvirt-lxc` driver.
## Storage drivers
Docker images are made by series of stacked layers. The recommended driver is
DeviceMapper one, which is also the default choice.
Docker supports different storage drivers:
The Docker packages ships also an experimental BTRFS driver. To use this driver
Docker daemon must run on a BTRFS partition already prepared by the host system.
* `vfs`: this driver is automatically used when the Docker host filesystem
does not support copy-on-write. This is a simple driver which does not offer
some of the advantages of Docker (like sharing layers, more on that in the
next sections). It is highly reliable but also slow.
* `devicemapper`: this driver relies on the device-mapper thin provisioning
module. It supports copy-on-write, hence it offers all the advantages of
Docker.
* `btrfs`: this driver relies on Btrfs to provide all the features required
by Docker. To use this driver the `/var/lib/docker` directory must be on a
btrfs filesystem.
* `AUFS`: this driver relies on AUFS union filesystem. Neither the upstream
kernel nor the SUSE one supports this filesystem. Hence the AUFS driver is
not built into the SUSE Docker package.
To use the experimental BTRFS driver the Docker daemon must be started with this
command:
It is possible to specify which driver to use by changing the value of the
`DOCKER_OPTS` variable defined inside of the `/etc/sysconfig/docker` file.
This can be done either manually or using &yast; by browsing to:
* System
* /etc/sysconfig Editor
* System
* Management
* DOCKER_OPTS
menu and entering the `-s storage_driver` string.
For example, to force the usage of the `devicemapper` driver
enter the following text:
```
docker -d -s btrfs
DOCKER_OPTS="-s devicemapper
```
It is recommended to have `/var/lib/docker` mounted on a different filesystem
to not affect the Docker host OS in case of a filesystem corruption.
# Setting up a Docker host

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docker.changes
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@ -1,3 +1,8 @@
-------------------------------------------------------------------
Thu Sep 4 15:41:39 UTC 2014 - fcastelli@suse.com
- Updates to SUSE's readme file.
-------------------------------------------------------------------
Mon Aug 25 07:49:48 UTC 2014 - fcastelli@suse.com