Docker Zfs

• Docker ZFS Storage Driver - container filesystem layers are created as ZFS datasets

Also see these:

• Our ZFS guide
• Our Docker guide

Docker ZFS Storage Driver Setup

• You will need to have both Docker and ZFS installed before following these steps.
• Also keep in mind that you should identify disks “by-id” and nott using names like “/dev/sda”.

Stop the docker daemon:

sudo systemctl stop docker

Backup and remove the contents of /var/lib/docker:

sudo cp -au /var/lib/docker /var/lib/docker.bak
sudo rm -rf /var/lib/docker/*

Create a new zpool mounted on /var/lib/docker:

sudo zpool create -f zpool-docker -m /var/lib/docker mirror /dev/sda /dev/sdb

Verify that it is setup and mounted:

sudo zfs list

Enable the ZFS storage driver in the docker daemon config:

vi /etc/docker/daemon.json


{
  "storage-driver": "zfs"
}

Start docker back up:

sudo systemctl start docker

Verify that docker is using the ZFS storage driver as expected:

docker info