Hi Matthias, On Thu, 5 Mar 2026, Matthias Riße via ceph-users wrote:
I ran into this issue too and was quite puzzled. There is this open PR which suggests that group snapshot exports are unsupported as of now: https://github.com/ceph/ceph/pull/40808
Thanks for your fast reply. I was afraid of that the group feature is not yet much usable for: no export, no clone, no mirror. Just snap/rollback works. The IBM version supports group mirror[1]. But I don't know if this
feature will stay an exclusive enterprise one? The mentioned PR is old and outdated. Seems not a prominent feature ...
The best thing I could figure out to get consistent snapshots with multiple rbd's is to fsfreeze my filesystems (using libvirt, so domfs{freeze,thaw} in my case) and make individual snapshots of the rbd images.
Yes, I already considered this "workaround", but I'm not using libvirt, so have to talk to qemu-guest-agent my self.
Thanks, Sascha. [1] https://community.ibm.com/community/user/blogs/aarti-sharma/2025/07/04/consistency-group-mirroring-in-ibm-ceph-81 _______________________________________________ ceph-users mailing list -- [email protected] To unsubscribe send an email to [email protected]
