[ovirt-users] Tasks stuck waiting on another after failed storage migration (yet not visible on SPM)

Hello, I'm running oVirt version 4.3.9.4-1.el7. After a failed live storage migration a VM got stuck with snapshot. Checking the engine logs I can see that the snapshot removal task is waiting for Merge to complete and vice versa. 2020-05-26 18:34:04,826+02 INFO [org.ovirt.engine.core.bll.snapshots.RemoveSnapshotSingleDiskLiveCommandCallback] (EE-ManagedThreadFactory-engineScheduled-Thread-70) [90f428b0-9c4e-4ac0-8de6-1103fc13da9e] Command 'RemoveSnapshotSingleDiskLive' (id: '60ce36c1-bf74-40a9-9fb0-7fcf7eb95f40') waiting on child command id: 'f7d1de7b-9e87-47ba-9ba0-ee04301ba3b1' type:'Merge' to complete 2020-05-26 18:34:04,827+02 INFO [org.ovirt.engine.core.bll.MergeCommandCallback] (EE-ManagedThreadFactory-engineScheduled-Thread-70) [90f428b0-9c4e-4ac0-8de6-1103fc13da9e] Waiting on merge command to complete (jobId = f694590a-1577-4dce-bf0c-3a8d74adf341) 2020-05-26 18:34:04,845+02 INFO [org.ovirt.engine.core.bll.ConcurrentChildCommandsExecutionCallback] (EE-ManagedThreadFactory-engineScheduled-Thread-70) [90f428b0-9c4e-4ac0-8de6-1103fc13da9e] Command 'RemoveSnapshot' (id: '47c9a847-5b4b-4256-9264-a760acde8275') waiting on child command id: '60ce36c1-bf74-40a9-9fb0-7fcf7eb95f40' type:'RemoveSnapshotSingleDiskLive' to complete 2020-05-26 18:34:14,277+02 INFO [org.ovirt.engine.core.vdsbroker.monitoring.VmJobsMonitoring] (EE-ManagedThreadFactory-engineScheduled-Thread-96) [] VM Job [f694590a-1577-4dce-bf0c-3a8d74adf341]: In progress (no change) I cannot see any runnig tasks on the SPM (vdsm-client Host getAllTasksInfo). I also cannot find the task ID in any of the other node's logs. I already tried restarting the Engine (didn't help). To start I'm puzzled as to where this task is queueing? Any Ideas on how I could resolve this? Thank you. Regards, David