This document is for a development version of Ceph.
Attaches the given logical volume to OSD as a DB. Logical volume name format is vg/lv. Fails if OSD has already got attached DB.
Attach vgname/lvname as a DB volume to OSD 1:
ceph-volume lvm new-db --osd-id 1 --osd-fsid 55BD4219-16A7-4037-BC20-0F158EFCC83D --target vgname/new_db