[ovirt-users] Snapshot deletion failure

[Vinzenz Feenstra]

> On Jun 24, 2016, at 9:10 AM, nicolas at devels.es wrote:
> 
> Hi,
> 
> We're trying to delete an auto-generated live snapshot that has been created after migrating an online VM's storage to a different domain. oVirt version is 3.6.6 and VDSM version is 4.17.28. Most relevant log lines are:
> 
>    2016-06-24 07:50:36,252 ERROR [org.ovirt.engine.core.vdsbroker.vdsbroker.MergeVDSCommand] (pool-7-thread-10) [799a22e3] Failed in 'MergeVDS' method
>    2016-06-24 07:50:36,256 ERROR [org.ovirt.engine.core.dal.dbbroker.auditloghandling.AuditLogDirector] (pool-7-thread-10) [799a22e3] Correlation ID: null, Call Stack: null, Custom Event ID: -1, Message: VDSM host2.domain.com command failed: Merge failed
>    2016-06-24 07:50:36,256 ERROR [org.ovirt.engine.core.vdsbroker.vdsbroker.MergeVDSCommand] (pool-7-thread-10) [799a22e3] Command 'MergeVDSCommand(HostName = host2.domain.com, MergeVDSCommandParameters:{runAsync='true', hostId='c31dca1a-e5bc-43f6-940f-6397e3ddbee4', vmId='7083832a-a1a2-42b7-961f-2e9c0dcd7e18', storagePoolId='fa155d43-4e68-486f-9f9d-ae3e3916cc4f', storageDomainId='9339780c-3667-4fef-aa13-9bec08957c5f', imageGroupId='65a0b0d4-5c96-4dd9-a31b-4d08e40a46a5', imageId='9eec9e8f-38db-4abf-b1c4-92fa9383f8b1', baseImageId='568b2f77-0ddf-4349-a45c-36fcb0edecb6', topImageId='9eec9e8f-38db-4abf-b1c4-92fa9383f8b1', bandwidth='0'})' execution failed: VDSGenericException: VDSErrorException: Failed to MergeVDS, error = Merge failed, code = 52
>    2016-06-24 07:50:36,256 ERROR [org.ovirt.engine.core.bll.MergeCommand] (pool-7-thread-10) [799a22e3] Engine exception thrown while sending merge command: org.ovirt.engine.core.common.errors.EngineException: EngineException: org.ovirt.engine.core.vdsbroker.vdsbroker.VDSErrorException: VDSGenericException: VDSErrorException: Failed to MergeVDS, error = Merge failed, code = 52 (Failed with error mergeErr and code 52)
> 
> I'm attaching relevant logs (both for ovirt-engine and SPM's vdsm).
> 
> What could be the reason for this error?

@Nir,

that looks like some issue in VDSM please have a look

jsonrpc.Executor/3::ERROR::2016-06-24 07:50:36,216::vm::4955::virt.vm::(merge) vmId=`7083832a-a1a2-42b7-961f-2e9c0dcd7e18`::Live merge failed (job: 3ea68e36-6d99-4af9-a54e-4c5b06df6a0f)
Traceback (most recent call last):
  File "/usr/share/vdsm/virt/vm.py", line 4951, in merge
    flags)
  File "/usr/share/vdsm/virt/virdomain.py", line 68, in f
    ret = attr(*args, **kwargs)
  File "/usr/lib/python2.7/site-packages/vdsm/libvirtconnection.py", line 124, in wrapper
    ret = f(*args, **kwargs)
  File "/usr/lib/python2.7/site-packages/vdsm/utils.py", line 1313, in wrapper
    return func(inst, *args, **kwargs)
  File "/usr/lib64/python2.7/site-packages/libvirt.py", line 668, in blockCommit
    if ret == -1: raise libvirtError ('virDomainBlockCommit() failed', dom=self)
libvirtError: block copy still active: disk 'vda' already in active block job


> 
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