Hi, before getting into that the first thing I would do is to fail the mgr. There have been too many issues where failing over the mgr resolved many of them. If that doesn't help, the cephadm.log should show something useful (/var/log/ceph/cephadm.log on the OSD hosts, I'm still not too familiar with the whole 'ceph log last 200 debug cephadm' thing). I remember reports in earlier versions of ceph-volume (probably pre-cephadm) where not all OSDs were created if the host had many disks to deploy. But I can't find those threads right now. And it's strange that on the second cluster no OSD is created at all, but again, maybe fail the mgr first before looking deeper into it. Regards, Eugen Zitat von "Kuhring, Mathias" <mathias.kuhring@bih-charite.de>:
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 _______________________________________________ ceph-users mailing list -- ceph-users@ceph.io To unsubscribe send an email to ceph-users-leave@ceph.io