[ceph-users] RBD: group snap rollback invalid argument

[Eugen Block via ceph-users]

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?

Thanks!
Eugen

[0] https://tracker.ceph.com/issues/66300
[1] https://tracker.ceph.com/issues/66589




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Eugen Block
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