Ceph » ceph-volume

Interesting data would be:

when block-data:

• used by ceph (which osd_id)
• used for operating system (also correctly identify raid setups which are not directly mounted)
• mounted but not for ceph
• insufficient size (already there)

when block-db/wal:

• which osds(with ids) are mapped to me
• if there are free slots (see https://tracker.ceph.com/issues/44749) although this probably deserves a separate field

some of this information can already be extracted by inspecting the metadata of each drive, but it's pretty handy to have that
data in a central place.