I would like to try out ZFS on Ubuntu(16.04) docker container. Followed the following https://docs.docker.com/engine/userguide/storagedriver/zfs-driver/
> lsmod | grep zfs
zfs 2813952 5
zunicode 331776 1 zfs
zcommon 57344 1 zfs
znvpair 90112 2 zfs,zcommon
spl 102400 3 zfs,zcommon,znvpair
zavl 16384 1 zfs
Listing the ZFS mounts
>sudo zfs list
NAME USED AVAIL REFER MOUNTPOINT
zpool-docker 261K 976M 53.5K /zpool-docker
zpool-docker/docker 120K 976M 120K /var/lib/docker
After starting docker
> sudo docker info
Containers: 0
Running: 0
Paused: 0
Stopped: 0
Images: 0
Server Version: 1.12.0
Storage Driver: aufs
Root Dir: /var/lib/docker/aufs
Backing Filesystem: zfs
Dirs: 0
...
Wonder why I still get **Storage Driver: aufs & Root Dir: /var/lib/docker/aufs" in place of zfs?
Also how can I map "/zpool-docker" into the Ubuntu container image?
Assuming you have:
data
)/var/lib/docker
(created with a command along the line of: zfs create -o mountpoint=/var/lib/docker data/docker
)Then:
Stop your docker daemon (eg. systemctl stop docker.service
)
Create a file /etc/docker/daemon.json
or amend it to contain a line with "storage-driver"
set to zfs
:
{
...
"storage-driver": "zfs"
...
}
Restart your docker daemon.
docker info
should now reveal:
Storage Driver: zfs
Zpool: data
Zpool Health: ONLINE
Parent Dataset: data/docker