Hello,

after a failed live storage migration (cause unknown) we have a snapshot which is undeletable due to its status 'illegal' (as seen in storage/snapshot tab). I have already found some bugs [1],[2],[3] regarding this issue, but no way how to solve the issue within oVirt 3.5.3.

I have attached the relevant engine.log snippet. Is there any way to do a live merge (and therefore delete the snapshot)?

[1] https://bugzilla.redhat.com/show_bug.cgi?id=1213157
[2] https://bugzilla.redhat.com/show_bug.cgi?id=1247377 links to [3]
[3] https://bugzilla.redhat.com/show_bug.cgi?id=1247379 (no access)

Kind regards

Jan Siml
2015-08-26 17:31:05,203 INFO  
[org.ovirt.engine.core.bll.RemoveSnapshotSingleDiskLiveCommand] 
(DefaultQuartzScheduler_Worker-21) [598f841d] Executing Live Merge command step 
MERGE
2015-08-26 17:31:05,216 INFO  
[org.ovirt.engine.core.bll.RemoveSnapshotCommandCallback] 
(DefaultQuartzScheduler_Worker-21) Waiting on Live Merge child commands to 
complete
2015-08-26 17:31:05,221 INFO  [org.ovirt.engine.core.bll.MergeCommand] 
(pool-7-thread-8) [6b01a8f1] Running command: MergeCommand internal: true. 
Entities affected :  ID: 08c6d79f-28df-427e-9b0c-e9eb9ee93ecf Type: Storage
2015-08-26 17:31:05,222 INFO  
[org.ovirt.engine.core.vdsbroker.vdsbroker.MergeVDSCommand] (pool-7-thread-8) 
[6b01a8f1] START, MergeVDSCommand(HostName = prod-node-09.company.net, 
MergeVDSCommandParameters{HostId = fc48853d-f70d-429a-b93b-da696739675a, 
vmId=02805d83-7ac7-4992-a332-8e342349b02b, 
storagePoolId=ab28c1c8-2f4c-4152-89cf-cd98f7e5b00d, 
storageDomainId=08c6d79f-28df-427e-9b0c-e9eb9ee93ecf, 
imageGroupId=b67eb317-e15e-45b0-bec6-099da533115c, 
imageId=a0042168-d91f-47fa-aa21-6336da0e084e, 
baseImageId=80238c98-2b50-4f06-bc4c-1db5a2947ee9, 
topImageId=a0042168-d91f-47fa-aa21-6336da0e084e, bandwidth=0}), log id: 18cfaef3
2015-08-26 17:31:05,255 ERROR 
[org.ovirt.engine.core.vdsbroker.vdsbroker.MergeVDSCommand] (pool-7-thread-8) 
[6b01a8f1] Failed in MergeVDS method
2015-08-26 17:31:05,256 INFO  
[org.ovirt.engine.core.vdsbroker.vdsbroker.MergeVDSCommand] (pool-7-thread-8) 
[6b01a8f1] Command org.ovirt.engine.core.vdsbroker.vdsbroker.MergeVDSCommand 
return value 
 StatusOnlyReturnForXmlRpc [mStatus=StatusForXmlRpc [mCode=13, mMessage=Drive 
image file could not be found]]
2015-08-26 17:31:05,256 INFO  
[org.ovirt.engine.core.vdsbroker.vdsbroker.MergeVDSCommand] (pool-7-thread-8) 
[6b01a8f1] HostName = prod-node-09.company.net
2015-08-26 17:31:05,257 ERROR 
[org.ovirt.engine.core.vdsbroker.vdsbroker.MergeVDSCommand] (pool-7-thread-8) 
[6b01a8f1] Command MergeVDSCommand(HostName = prod-node-09.company.net, 
MergeVDSCommandParameters{HostId = fc48853d-f70d-429a-b93b-da696739675a, 
vmId=02805d83-7ac7-4992-a332-8e342349b02b, 
storagePoolId=ab28c1c8-2f4c-4152-89cf-cd98f7e5b00d, 
storageDomainId=08c6d79f-28df-427e-9b0c-e9eb9ee93ecf, 
imageGroupId=b67eb317-e15e-45b0-bec6-099da533115c, 
imageId=a0042168-d91f-47fa-aa21-6336da0e084e, 
baseImageId=80238c98-2b50-4f06-bc4c-1db5a2947ee9, 
topImageId=a0042168-d91f-47fa-aa21-6336da0e084e, bandwidth=0}) execution 
failed. Exception: VDSErrorException: VDSGenericException: VDSErrorException: 
Failed to MergeVDS, error = Drive image file could not be found, code = 13
2015-08-26 17:31:05,259 INFO  
[org.ovirt.engine.core.vdsbroker.vdsbroker.MergeVDSCommand] (pool-7-thread-8) 
[6b01a8f1] FINISH, MergeVDSCommand, log id: 18cfaef3
2015-08-26 17:31:05,259 ERROR [org.ovirt.engine.core.bll.MergeCommand] 
(pool-7-thread-8) [6b01a8f1] Command org.ovirt.engine.core.bll.MergeCommand 
throw Vdc Bll exception. With error message VdcBLLException: 
org.ovirt.engine.core.vdsbroker.vdsbroker.VDSErrorException: 
VDSGenericException: VDSErrorException: Failed to MergeVDS, error = Drive image 
file could not be found, code = 13 (Failed with error imageErr and code 13)
2015-08-26 17:31:05,265 ERROR [org.ovirt.engine.core.bll.MergeCommand] 
(pool-7-thread-8) [6b01a8f1] Transaction rolled-back for command: 
org.ovirt.engine.core.bll.MergeCommand.
2015-08-26 17:31:15,230 ERROR 
[org.ovirt.engine.core.bll.RemoveSnapshotSingleDiskLiveCommand] 
(DefaultQuartzScheduler_Worker-77) [598f841d] Failed child command status for 
step MERGE
2015-08-26 17:31:15,234 INFO  
[org.ovirt.engine.core.bll.RemoveSnapshotCommandCallback] 
(DefaultQuartzScheduler_Worker-77) [1ec62455] All Live Merge child commands 
have completed, status FAILED
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