The oVirt Team has just released a new version of ovirt-engine package that fixes a few high severity bugs: - [BZ 1755869] ovirt-engine throws an exception when trying to access VMs which have snapshots from unsupported compatibility levels - [BZ 1757782] Deleting a Single snapshot disk live merge 'REDUCE_IMAGE' step fails with NPE and snapshot disk remains in illegal state - [BZ 1758052] Create VM rollback fails with NPE leaving VM locked - Exception in invoking callback of command AddVmFromTemplate- Exception: javax.ejb.EJBTransactionRolledbackException
We recommend to update ovirt-engine in order to avoid these issues.