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.
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)
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
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