Ceph » ceph-volume

This is particularly useful for filestore where Journals will be size restricted, so something like this would be allowed:

ceph-volume lvm create --filestore --data /dev/sda --journal /dev/sdb

Where sdb would be converted to one big VG and just 10GB would be cut out. Second iteration would look like:

ceph-volume lvm create --filestore --data /dev/sdd --journal /dev/sdb

And in this case ceph-volume would understand /dev/sdb is part of an existing VG, so it would just try to carve out another 10GB LV from it