[ovirt-users] Failed to delete snapshot (again)

Hi folks, since some month I have an issue with snapshot removals (I have storware vprotect backup system, heavily using snapshots). After some time spent on a bugzilla (https://bugzilla.redhat.com/show_bug.cgi?id=1948599) we discovered that my issue is not depending on that bug :-( So they pointed me here again. Briefly: sometime snapshot removal fails, leaving snapshot in illegal state. Trying to remove again (via ovirt UI) keeps failing and doesn't solve. The only way to rebuild a consistent situation is live migrating affected disk to another storage domain; after moving the disk, snapshot is no more marked illegal and then I can remove it. You can imagine this is a bit tricky, specially for large disks. In my logs I can find: 2022-08-29 09:17:11,890+02 ERROR [org.ovirt.engine.core.bll.MergeStatusCommand] (EE-ManagedExecutorService-commandCoordinator-Thread-1) [0eced56f-689d-422b-b15c-20b824377b08] Failed to live merge. Top volume f8f84b1c-53ab-4c99-a01d-743ed3d7859b is still in qemu chain [0ea89fbc-d39a-48ff-aa2b-0381d79d7714, 55bb387f-01a6-41b6-b585-4bcaf2ea5e32, f8f84b1c-53ab-4c99-a01d-743ed3d7859b] My setup is ovirt-engine-4.5.2.4-1.el8.noarch, with hypervisors based on oVirt Node 4.5.2 (vdsm-4.50.2.2-1.el8). Thank you in advance. Regards, gc