/var/lib/docker directory is mounted on a 3 replica volume and
should be manually backup from time to time to keep the history. If
there is not enough space, it can be resized with:
$ openstack volume set --size 200 cloud-volume $ ssh email@example.com $ sudo resize2fs /dev/sdb
Note that the
size in the ansible role for the
is only used when the volume is created and cannot be used to shrink
or enlarge the volume.