On Fri, Mar 6, 2026 at 8:04 AM Sascha Lucas via ceph-users <[email protected]> wrote: > > Hi Ilya, > > On Thu, 5 Mar 2026, Ilya Dryomov via ceph-users wrote: > > > To see the image-level snapshots that comprise a group snapshot taken > > with "rbd group snap create", run "rbd snap ls --all". > > > > There is no support for cloning from a group snapshot directly but > > cloning from the corresponding image-level snapshots is possible with > > "rbd clone <image name> --snap-id <snap id>" syntax (instead of the > > usual "rbd clone <image name>@<snap name>"). As a workaround one can > > do that for each member image and then create a new group out of the > > resulting clone images. The new "clone" group wouldn't get linked to > > the original "parent" group like clone images get linked to their > > parent images though. > > Thanks for this valuable information. I was able to clone each individual > image from the group snapshot. Also found this IBM documentation[1]. > > > Unfortunately there is no support for exporting a group snapshot > > directly (you already saw the unfinished PR) and even being able to > > export the corresponding image-level snapshots individually is pending > > on https://tracker.ceph.com/issues/72410. As a workaround one can > > clone from an image-level snapshot and then export the clone image. > > Also confirming that exporting the cloned images works well. But with this > workaround there seems no chance for export-diff between two group > snapshots?
Correct -- https://tracker.ceph.com/issues/72410 is needed for that. Thanks, Ilya _______________________________________________ ceph-users mailing list -- [email protected] To unsubscribe send an email to [email protected]
