On Fri, May 29, 2026 at 6:41 PM Eugen Block <[email protected]> wrote: > > The commands were: > > controller02:~# rbd --id user group create images/test-servers > > controller02:~# for i in 0f69278e-00c2-46b0-b6e7-0b06e9c8b6fd > 72f5816c-c1db-44de-b0a2-19d661faa963 > 47d6144e-0d5a-4dc7-82dd-5be3edf9f6cc; do rbd --id user group image add > images/test-servers images/${i}_disk; done > > controller02:~# rbd --id user group image ls images/test-servers > images/0f69278e-00c2-46b0-b6e7-0b06e9c8b6fd_disk > images/47d6144e-0d5a-4dc7-82dd-5be3edf9f6cc_disk > images/72f5816c-c1db-44de-b0a2-19d661faa963_disk > > controller02:~# rbd --id user group snap create images/test-servers@snap1 > > controller02:~# rbd --id user group snap ls images/test-servers > NAME STATUS > snap1 ok > > > # rollback works for all images > controller02:~# rbd --id user group snap rollback images/test-servers@snap1 > Rolling back to group snapshot: 100% complete...done. > > # removing one image from the group > controller02:~# rbd --id user group image rm images/test-servers > images/0f69278e-00c2-46b0-b6e7-0b06e9c8b6fd_disk > > # rollback fails > controller02:~# rbd --id user group snap rollback images/test-servers@snap1 > Rolling back to group snapshot: 0% complete...failed. > rbd: rollback group to snapshot failed: (22) Invalid argument > > I'll add the debug output later, will need to sanitze it first. But I > don't see anything obvious in there.
Hi Eugen, Based on the above, it's https://tracker.ceph.com/issues/66300 and is therefore the intended behavior. The only fly in the ointment is that you aren't seeing the associated "group snapshot membership does not match group membership" error message. You not seeing it is consistent with the attached debug output where only very early messenger traffic is present and nothing beyond that. It suggests some non-conventional settings in the cluster-wide config such as log_to_stderr being set to false or similar. Can you try appending --log-to-stderr true to "rbd group snap rollback" command? Thanks, Ilya > > Zitat von Ilya Dryomov <[email protected]>: > > > On Fri, May 29, 2026 at 4:05 PM Eugen Block <[email protected]> wrote: > >> > >> Hi, > >> > >> thanks for your quick reply. No I didn't see any additional output > >> than the one I shared (invalid argument). I could add debug log level > >> if necessary. > > > > That error message should have been displayed no matter the log level, > > so something other than https://tracker.ceph.com/issues/66300 might be > > involved. > > > > What exactly do you mean by "I removed an image from the group > > snapshot"? Which commands were run there and in what order? > > > >> But one more detail, I also tried the rollback directly within the > >> cephadm shell (so version 19.2.3) with the same result: > >> > >> ceph03:~ # cephadm shell > >> ... > >> [ceph: root@ceph03 /]# rbd group snap rollback > >> images/test-servers@20260430_start > >> Rolling back to group snapshot: 0% complete...failed. > >> rbd: rollback group to snapshot failed: (22) Invalid argument > >> > >> [ceph: root@ceph03 /]# ceph -v > >> ceph version 19.2.3 (c92aebb279828e9c3c1f5d24613efca272649e62) > >> squid (stable) > > > > Can you try appending --debug-ms 1 --debug-rbd 20 to the command > > (let's stick to this cephadm shell) and attach the output? > > > > Thanks, > > > > Ilya > > > >> > >> Thanks! > >> Eugen > >> > >> Zitat von Ilya Dryomov <[email protected]>: > >> > >> > On Fri, May 29, 2026 at 2:33 PM Eugen Block via ceph-users > >> > <[email protected]> wrote: > >> >> > >> >> Hi, > >> >> > >> >> I wanted to rollback a group snapshot on Ubuntu 24.04 (rbd client > >> >> version 19.2.1), the Ceph cluster version is 19.2.3. The client fails > >> >> with "invalid argument": > >> >> > >> >> controller02:~# rbd --id <user> group snap rollback --pool images > >> >> --group test-servers --snap 20260430_start > >> >> Rolling back to group snapshot: 0% complete...failed. > >> >> rbd: rollback group to snapshot failed: (22) Invalid argument > >> >> > >> >> controller02:~# ceph -v > >> >> ceph version 19.2.1 (9efac4a81335940925dd17dbf407bfd6d3860d28) > >> >> squid (stable) > >> >> > >> >> But running the same command (just as admin not as <user>) on a Ceph > >> >> node works: > >> >> > >> >> ceph03:~ # rbd group snap rollback --pool images --group test-servers > >> >> --snap 20260430_start > >> >> Rolling back to group snapshot: 100% complete...done. > >> >> > >> >> ceph03:~ # ceph -v > >> >> ceph version 16.2.13-66-g54799ee0666 > >> >> (54799ee06669271880ee5fc715f99202002aa371) pacific (stable) > >> >> > >> >> > >> >> What seems to be the issue here is that I removed an image from the > >> >> group snapshot. I wonder if it could be this bug [0] which is supposed > >> >> to be fixed in 19.2.0 according to the "Released In" field of the > >> >> Squid backport tracker [1]. > >> >> > >> >> This seems a little inconsistent to me, could someone please clarify? > >> > > >> > Hi Eugen, > >> > > >> > Did you see "group snapshot membership does not match group membership" > >> > error message when the rollback command failed with 19.2.1 client? > >> > > >> > Thanks, > >> > > >> > Ilya > >> > >> > >> > > > _______________________________________________ ceph-users mailing list -- [email protected] To unsubscribe send an email to [email protected]
