Hi Steven, You have several ways to identify the drive from the OSD.
Option 1: ceph device ls | grep 'osd\.<id>$' This should return an output of the form: <drive manufacturer>_<drive model>_<drive serial number> <host>:<dev name> osd.<id> Option 2: ceph osd metadata <id> This should show useful information in the "device_ids", "device_paths" and "devices" keys fields. This will also include information about the DB/WAL device, if in use. Then use the output of `lsblk -o NAME,SERIAL` or `lsblk -O` to identify the drive from the serial number. On Mon, 29 Sept 2025 at 18:39, Steven Vacaroaia <[email protected]> wrote: > Hi, > > There must be something basic that I am missing but I have an "osd down" > issue and cannot pinpoint which disk need to be replaced > > Steps I took > > 1. "Identify the problem" > cepg osd stat > 185 osds: 184 up (since 3d), 184 in (since 3d); epoch: e47876; 941 remapped > pgs > > 2." identify the OSD" > ceph osd tree | grep down > 51 ssd_class 6.98630 osd.51 down 0 1.00000 > osd.51 ceph-host-3 > stopped 3m ago 9w - 26.1G <unknown> > <unknown> <unknown> > > 3. "check the block" > ls -al /var/lib/ceph/0cfa836d-68b5-11f0-90bf-7cc2558e5ce8/osd.51 > block -> > > /dev/ceph-419569a5-9a68-4688-8cf4-17ee450a8659/osd-block-75fe30c3-8cfa-49c7-80a1-6d79c3e4b4e6 > > 4. "find the device" > ls -al > > /dev/ceph-419569a5-9a68-4688-8cf4-17ee450a8659/osd-block-75fe30c3-8cfa-49c7-80a1-6d79c3e4b4e6 > /dev/dm-7 > > 5. "what type " > blkid /dev/dm-7 > /dev/dm-7: TYPE="ceph_bluestore" > This is weird since osd 51 was type "ssd_class" so just a regular OSD > deployed on SSD drive > > 5. which disk has dm-7 > lsblk -o NAME,SERIAL | grep > > ceph-419569a5-9a68-4688-8cf4-17ee450a8659/osd-block-75fe30c3-8cfa-49c7-80a1-6d79c3e4b4e6 > no results ?? > > > blkid /dev/dm-7 > /dev/dm-7: TYPE="ceph_bluestore" > _______________________________________________ > ceph-users mailing list -- [email protected] > To unsubscribe send an email to [email protected] > _______________________________________________ ceph-users mailing list -- [email protected] To unsubscribe send an email to [email protected]
