Hi all,

I've got 2 two node setup, image based installs.
When doing ova exports or generic snapshots, things seem in order.
Removing snapshots shows warning 'disk in illegal state'

Mouse hover shows .. please do not shutdown before succesfully remove snapshot


ovirt-engine log
2020-07-22 16:40:37,549+02 ERROR [org.ovirt.engine.core.dal.dbbroker.auditloghandling.AuditLogDirector] (EE-ManagedExecutorService-commandCoordinator-Thread-2) [264b0047-5aa6-4380-9d32-eb328fd6bed0] EVENT_ID: VDS_BROKER_COMMAND_FAILURE(10,802), VDSM node2.lab command MergeVDS failed: Merge failed
2020-07-22 16:40:37,549+02 ERROR [org.ovirt.engine.core.vdsbroker.vdsbroker.MergeVDSCommand] (EE-ManagedExecutorService-commandCoordinator-Thread-2) [264b0047-5aa6-4380-9d32-eb328fd6bed0] Command 'MergeVDSCommand(HostName = node2.lab, MergeVDSCommandParameters:{hostId='02df5213-1243-4671-a1c6-6489d7146319', vmId='64c25543-bef7-4fdd-8204-6507046f5a34', storagePoolId='5a4ea80c-b3b2-11ea-a890-00163e3cb866', storageDomainId='9a12f1b2-5378-46cc-964d-3575695e823f', imageGroupId='3f7ac8d8-f1ab-4c7a-91cc-f34d0b8a1cb8', imageId='c757e740-9013-4ae0-901d-316932f4af0e', baseImageId='ebe50730-dec3-4f29-8a38-9ae7c59f2aef', topImageId='c757e740-9013-4ae0-901d-316932f4af0e', bandwidth='0'})' execution failed: VDSGenericException: VDSErrorException: Failed to MergeVDS, error = Merge failed, code = 52
2020-07-22 16:40:37,549+02 ERROR [org.ovirt.engine.core.bll.MergeCommand] (EE-ManagedExecutorService-commandCoordinator-Thread-2) [264b0047-5aa6-4380-9d32-eb328fd6bed0] 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)
Caused by: org.ovirt.engine.core.vdsbroker.vdsbroker.VDSErrorException: VDSGenericException: VDSErrorException: Failed to MergeVDS, error = Merge failed, code = 52
      <driver name='qemu' error_policy='report'/>
      <driver name='qemu' type='qcow2' cache='none' error_policy='stop' io='threads'/>
2020-07-22 16:40:39,659+02 ERROR [org.ovirt.engine.core.bll.MergeStatusCommand] (EE-ManagedExecutorService-commandCoordinator-Thread-3) [264b0047-5aa6-4380-9d32-eb328fd6bed0] Failed to live merge. Top volume c757e740-9013-4ae0-901d-316932f4af0e is still in qemu chain [ebe50730-dec3-4f29-8a38-9ae7c59f2aef, c757e740-9013-4ae0-901d-316932f4af0e]
2020-07-22 16:40:41,524+02 ERROR [org.ovirt.engine.core.bll.snapshots.RemoveSnapshotSingleDiskLiveCommand] (EE-ManagedScheduledExecutorService-engineScheduledThreadPool-Thread-58) [264b0047-5aa6-4380-9d32-eb328fd6bed0] Command id: 'e0b2bce7-afe0-4955-ae46-38bcb8719852 failed child command status for step 'MERGE_STATUS'
2020-07-22 16:40:42,597+02 ERROR [org.ovirt.engine.core.bll.snapshots.RemoveSnapshotSingleDiskLiveCommand] (EE-ManagedScheduledExecutorService-engineScheduledThreadPool-Thread-53) [264b0047-5aa6-4380-9d32-eb328fd6bed0] Merging of snapshot 'ef8f7e06-e48c-4a8c-983c-64e3d4ebfcf9' images 'ebe50730-dec3-4f29-8a38-9ae7c59f2aef'..'c757e740-9013-4ae0-901d-316932f4af0e' failed. Images have been marked illegal and can no longer be previewed or reverted to. Please retry Live Merge on the snapshot to complete the operation.
2020-07-22 16:40:42,603+02 ERROR [org.ovirt.engine.core.bll.snapshots.RemoveSnapshotSingleDiskLiveCommand] (EE-ManagedScheduledExecutorService-engineScheduledThreadPool-Thread-53) [264b0047-5aa6-4380-9d32-eb328fd6bed0] Ending command 'org.ovirt.engine.core.bll.snapshots.RemoveSnapshotSingleDiskLiveCommand' with failure.
2020-07-22 16:40:43,679+02 ERROR [org.ovirt.engine.core.bll.snapshots.RemoveSnapshotCommand] (EE-ManagedScheduledExecutorService-engineScheduledThreadPool-Thread-15) [264b0047-5aa6-4380-9d32-eb328fd6bed0] Ending command 'org.ovirt.engine.core.bll.snapshots.RemoveSnapshotCommand' with failure.
2020-07-22 16:40:43,774+02 ERROR [org.ovirt.engine.core.dal.dbbroker.auditloghandling.AuditLogDirector] (EE-ManagedScheduledExecutorService-engineScheduledThreadPool-Thread-15) [264b0047-5aa6-4380-9d32-eb328fd6bed0] EVENT_ID: USER_REMOVE_SNAPSHOT_FINISHED_FAILURE(357), Failed to delete snapshot 'Auto-generated for Export To OVA' for VM 'Adhoc'.


VDSM on hypervisor
2020-07-22 14:14:30,220+0200 ERROR (jsonrpc/5) [virt.vm] (vmId='14283e6d-c3f0-4011-b90f-a1272f0fbc10') Live merge failed (job: e59c54d9-b8d3-44d0-9147-9dd40dff57b9) (vm:5381)
    if ret == -1: raise libvirtError ('virDomainBlockCommit() failed', dom=self)
libvirt.libvirtError: internal error: qemu block name 'json:{"backing": {"driver": "qcow2", "file": {"driver": "file", "filename": "/rhev/data-center/mnt/10.12.0.9:_exports_data/9a12f1b2-5378-46cc-964d-3575695e823f/images/3206de41-ccdc-4f2d-a968-5e4da6c2ca3e/bb3aed4b-fc41-456a-9c18-1409a9aa6d14"}}, "driver": "qcow2", "file": {"driver": "file", "filename": "/rhev/data-center/mnt/10.12.0.9:_exports_data/9a12f1b2-5378-46cc-964d-3575695e823f/images/3206de41-ccdc-4f2d-a968-5e4da6c2ca3e/3995b256-2afb-4853-9360-33d0c12e5fd1"}}' doesn't match expected '/rhev/data-center/mnt/10.12.0.9:_exports_data/9a12f1b2-5378-46cc-964d-3575695e823f/images/3206de41-ccdc-4f2d-a968-5e4da6c2ca3e/3995b256-2afb-4853-9360-33d0c12e5fd1'
2020-07-22 14:14:30,234+0200 INFO  (jsonrpc/5) [jsonrpc.JsonRpcServer] RPC call VM.merge failed (error 52) in 0.17 seconds (__init__:312)

2020-07-22 14:17:28,798+0200 INFO  (jsonrpc/2) [api] FINISH getStats error=Virtual machine does not exist: {'vmId': '698d486c-edbf-4e28-a199-31a2e27bd808'} (api:129)
2020-07-22 14:17:28,798+0200 INFO  (jsonrpc/2) [jsonrpc.JsonRpcServer] RPC call VM.getStats failed (error 1) in 0.00 seconds (__init__:312)

Also in log,
INFO  (jsonrpc/1) [api.virt] FINISH getStats return={'status': {'code': 1, 'message': "Virtual machine does not exist:
But is is there and accessible

Any advice here?
Henri


ovirt 4.4.0.3-1.el8

OS Version:
RHEL - 8 - 1.1911.0.9.el8
OS Description:
oVirt Node 4.4.0
Kernel Version:
4.18.0 - 147.8.1.el8_1.x86_64
KVM Version:
4.1.0 - 23.el8.1
LIBVIRT Version:
libvirt-5.6.0-10.el8
VDSM Version:
vdsm-4.40.16-1.el8
SPICE Version:
0.14.2 - 1.el8
GlusterFS Version:
glusterfs-7.5-1.el8
CEPH Version:
librbd1-12.2.7-9.el8
Open vSwitch Version:
openvswitch-2.11.1-5.el8
Nmstate Version:
nmstate-0.2.10-1.el8

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