Dear ceph community,
We have trouble with new disks not being properly prepared resp. OSDs not being
fully installed by cephadm.
We just added one new node each with ~40 HDDs each to two of our ceph clusters.
In one cluster all but 5 disks got installed automatically.
In the other none got installed.
We are on ceph version 17.2.7 (b12291d110049b2f35e32e0de30d70e9a4c060d2) quincy
(stable) on both clusters.
(I haven't added new disks since the last upgrade if I recall correctly).
This is our OSD service definition:
```
0|0[root@ceph-3-10 ~]# ceph orch ls osd --export
service_type: osd
service_id: all-available-devices
service_name: osd.all-available-devices
placement:
host_pattern: '*'
spec:
data_devices:
all: true
filter_logic: AND
objectstore: bluestore
---
service_type: osd
service_id: unmanaged
service_name: osd.unmanaged
unmanaged: true
spec:
filter_logic: AND
objectstore: bluestore
```
Usually, new disks are installed properly (as expected due to
all-available-devices).
This time, I can see that LVs were created (via `lsblk`, `lvs`, `cephadm
ceph-volume lvm list`).
And OSDs are entered to the crushmap.
However, they are not assigned to a host yet, nor do they have a type or
weight, e.g.:
```
0|0[root@ceph-2-10 ~]# ceph osd tree | grep "0 osd"
518 0 osd.518 down 0 1.00000
519 0 osd.519 down 0 1.00000
520 0 osd.520 down 0 1.00000
521 0 osd.521 down 0 1.00000
522 0 osd.522 down 0 1.00000
```
And there is also no OSD daemon created (no docker container).
So, OSD creation is somehow stuck halfway.
I thought of fully cleaning up the OSD/disks.
Hopping cephadm might pick them up properly next time.
Just zapping was not possible, e.g. `cephadm ceph-volume lvm zap --destroy
/dev/sdab` results in these errors:
```
/usr/bin/docker: stderr stderr: wipefs: error: /dev/sdab: probing
initialization failed: Device or resource busy
/usr/bin/docker: stderr --> failed to wipefs device, will try again to
workaround probable race condition
```
So, I cleaned up more manually with purging them from crush and "resetting"
disk and LV with dd and dmsetup, resp.:
```
ceph osd purge 480 --force
dd if=/dev/zero of=/dev/sdab bs=1M count=1
dmsetup remove
ceph--e10e0f08--8705--441a--8caa--4590de22a611-osd--block--d464211c--f513--4513--86c1--c7ad63e6c142
```
ceph-volume still reported the old volumes, but then zapping actually got rid
of them (only cleaned out the left-over entries, I guess).
Now, cephadm was able to get one OSD up, when I did this cleanup for only one
disk.
When I did it in bulk for the rest, they all got stuck again the same way.
Looking into ceph-volume logs (here for osd.522 as representative):
```
0|0[root@ceph-2-11 /var/log/ceph/55633ec3-6c0c-4a02-990c-0f87e0f7a01f]# ll
*20240316
-rw-r--r-- 1 ceph ceph 613789 Mar 14 17:10 ceph-osd.522.log-20240316
-rw-r--r-- 1 root root 42473553 Mar 16 03:13 ceph-volume.log-20240316
```
ceph-volume only reports keyring creation:
```
[2024-03-14 16:10:19,509][ceph_volume.util.prepare][INFO ] Creating keyring
file for osd.522
[2024-03-14 16:10:19,510][ceph_volume.process][INFO ] Running command:
/usr/bin/ceph-authtool /var/lib/ceph/osd/ceph-522/keyring --create-keyring
--name osd.522 --add-key AQBfIfNlinc7EBAAHeFicrjmLEjRPGSjuFuLiQ==
```
In the OSD logs I found a couple of these, but don't know if they are related:
```
2024-03-14T16:10:54.706+0000 7fab26988540 2 rocksdb: [db/column_family.cc:546]
Failed to register data paths of column family (id: 11, name: P)
```
Has anyone seen this behaviour before?
Or could tell me where I should look next to troubleshoot this (which logs)?
Any help is appreciated.
Best Wishes,
Mathias
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