The identification of an OSD / Disk serial number in Ceph is especially important in the event of disk failure. This can be achieved with a couple of commands:
ceph-volume lvm list
This will output something similar to:
====== osd.9 =======
[block] /dev/ceph—-
block device /dev/ceph----
block uuid -----
cephx lockbox secret
cluster fsid ----
cluster name ceph
crush device class None
encrypted 0
osd fsid ----
osd id 9
type block
vdo 0
devices /dev/sdf
This will show the OSD number as will as the disk path (/dev/sdf)
The serial number can now be obtained with the following: