[ovirt-users] Snapshot is "Locked" - Can't do anything with the VM
Nathanaël Blanchet
blanchet at abes.fr
Wed May 18 15:56:15 UTC 2016
Le 18/05/2016 16:50, Ivo Rütsche a écrit :
>
> Hi Nathanaël
>
> I try it today and the snapshot was in the state "OK" after I execute
> the script. I try to remove the snapshot again, but it never do
> something. So after I click "Delete", i have this situation:
>
> Tasks(1):
> - (Hourglass) Removing Snapshot Auto-generated for Live Storage
> Migration of VM xxxx
> -- (Completed) Validating
> -- (Hourglass) Executing
>
> The snapshot is in the status "Locked"
>
> This status remains for ever.
>
>
> When I restart the engine, the Status is still in the status "Locked",
> but the task no longer exists.
>
>
> engine.log:
> 2016-05-18 16:33:07,532 INFO
> [org.ovirt.engine.core.bll.RemoveSnapshotCommand] (default task-23)
> [53281b57] Lock Acquired to object
> 'EngineLock:{exclusiveLocks='[2acfe3fa-be69-46da-9add-c748b2bd6034=<VM, ACTION_TYPE_FAILED_OBJECT_LOCKED>]',
> sharedLocks='null'}'
>
> 2016-05-18 16:33:08,640 INFO
> [org.ovirt.engine.core.bll.RemoveSnapshotCommand] (default task-23)
> [53281b57] Running command: RemoveSnapshotCommand internal: false.
> Entities affected : ID: 2acfe3fa-be69-46da-9add-c748b2bd6034 Type:
> VMAction group MANIPULATE_VM_SNAPSHOTS with role type USER
>
> 2016-05-18 16:33:08,984 INFO
> [org.ovirt.engine.core.bll.RemoveSnapshotCommand] (default task-23)
> [53281b57] Lock freed to object
> 'EngineLock:{exclusiveLocks='[2acfe3fa-be69-46da-9add-c748b2bd6034=<VM, ACTION_TYPE_FAILED_OBJECT_LOCKED>]',
> sharedLocks='null'}'
>
> 2016-05-18 16:33:10,079 INFO
> [org.ovirt.engine.core.dal.dbbroker.auditloghandling.AuditLogDirector]
> (default task-23) [] Correlation ID: 53281b57, Job ID:
> 58b18e63-2b7f-480c-84ea-260508aa8798, Call Stack: null, Custom Event
> ID: -1, Message: Snapshot 'Auto-generated for Live Storage Migration'
> deletion for VM 'xxxx' was initiated by admin at internal.
>
> ....but nothing else....
>
> On the node side, i can't find anything in the logs (or i looking on
> the wrong place).
>
> When the VM is not running, I can remove the snapshot without any
> problems. The VM images are on a NFS export from a Solaris (ZFS).
>
> gruss Ivo
>
>
>
>
>
>
> On 04.05.2016 13:40, Nathanaël Blanchet wrote:
>> Unlock procedure
>>
>> * QUERY : -q
>>
>> PGPASSWORD=XXXXX
>> /usr/share/ovirt-engine/setup/dbutils/unlock_entity.sh -q -t snapshot
>> -u engine
>> 296c010e-3c1d-4008-84b3-5cd39cff6aa1 |
>> 525a4dda-dbbb-4872-a5f1-8ac2aed48392
>>
>> * REMOVE
>>
>> PGPASSWORD=XXXXX
>> /usr/share/ovirt-engine/setup/dbutils/unlock_entity.sh -t snapshot -u
>> engine 525a4dda-dbbb-4872-a5f1-8ac2aed48392
>>
>> Ref :
>> http://lists.ovirt.org/pipermail/users/2015-November/035686.html
>>
>> Le 03/05/2016 21:17, Ivo Rütsche a écrit :
>>>
>>> I just do a full clone of the whole VM and the clone is running fine
>>> and have the last data on all disks.
>>>
>>> gruss ivo
>>>
>>>
>>> On 03.05.2016 20:12, Markus Stockhausen wrote:
>>>> Hi,
>>>>
>>>> we've seen a lot of trouble when deleting snapshots of multidisk VMs.
>>>> Especially endless running snapshot deletions is one of our culprits.
>>>> More here: https://bugzilla.redhat.com/show_bug.cgi?id=1319400
>>>>
>>>> Markus
>>>> ________________________________________
>>>> Von: users-bounces at ovirt.org [users-bounces at ovirt.org]" im
>>>> Auftrag von "Ivo Rütsche [lists.ovirt.org at direct.ruetsche.com]
>>>> Gesendet: Dienstag, 3. Mai 2016 19:23
>>>> An: users at ovirt.org
>>>> Betreff: [ovirt-users] Snapshot is "Locked" - Can't do anything
>>>> with the VM
>>>>
>>>> Hi oVirt List
>>>>
>>>> We have the problem, that two of our VM's have "Locked" snapshots
>>>> and we
>>>> can't go forward. From 10 VM's which we move from one store to
>>>> another,
>>>> we have problems with 5 of them to delete the snapshots. But with a
>>>> lot
>>>> of luck, the snapshot was always on the dedicated Swap-Disk, so we
>>>> just
>>>> have to remove the whole disk and create it again as new.
>>>>
>>>> Because we replace all the filers, we have to move the VM's
>>>> arround. The
>>>> move itself runns fine, but deleting the snapshots doesn't work
>>>> sometimes.
>>>>
>>>> I found a lot about our problem, but I can't find any solution, which
>>>> works an our environment.
>>>>
>>>> Our setup:
>>>> - 3 Solaris filer with NFS exports for the hosts for the vm-images
>>>> - 8 hosts (oVirt 3.6 / Centos 7.2.1511)
>>>> - The engine host is located outside of the DC, connected via VPN
>>>>
>>>> At the moment, one of the "problem-VM" is productive, the other should
>>>> become productive in the next days, so we focus us to the 2nd VM,
>>>> because we can play arround with them. The other one is startet up,
>>>> but
>>>> i have no idea, what happens, when i shut them down...
>>>>
>>>> This is the status today of VM, which is not productive at the moment:
>>>> - VM Status: Down
>>>> - Snapshots OK: 2
>>>> - Snapshots Locked: 1
>>>> - In the snapshot tab, everything is grayed out (Create, Preview,
>>>> Commit, Undo etc.)
>>>> - No active tasks are displayed
>>>>
>>>> Error message when i try to start the VM:
>>>> "Cannot run VM. The VM is performing an operation on a Snapshot.
>>>> Please
>>>> wait for the operation to finish, and try again."
This often produces to me too. The only way I found to resolve it is to
restart engine, you may try this, it has no impact on the host and vms.
>>>>
>>>> Something about the history of this VM:
>>>> 1. We start the disk move from filer1 to filer3, totaly 4 drives,
>>>> everything was fine
>>>> 2. Deleting snapshots, i think one or two runns fine
>>>> 3. Deleting the 2nd or 3rd snapshot runs two days without an end
>>>> 4. Rebooting the Engine
>>>> 5. No task anymore in the Tasks list
>>>> 6. The status of the snapshot is "Locked", die Disk of this snapshot
>>>> becoms "Illegal" and red
>>>> 7. Shutdown the VM - no luck, i can't start it again --> "Cannot run
>>>> VM. The VM is performing an operation on a Snapshot. Please wait
>>>> for the
>>>> operation to finish, and try again."
>>>> 8. We move the disk back from filer3 to the filer1
>>>> 9. The status of the snapshot is "Locked", die Disk of this snapshot
>>>> becoms "OK" and green
>>>> ...but i can't delete the snapshot or starting the VM :(
>>>>
>>>> Today, i copy the image files to a dedicated KVM host, which is not
>>>> involved in the oVirt environment and i merge the image manualy
>>>> together:
>>>> qemu-img convert -p -f qcow2 804ffcc3-446f-4c56-ba99-ab90c7951a6f
>>>> -O raw
>>>> Merged1
>>>>
>>>> I mount the image and everything fine, all the changes from the
>>>> last two
>>>> days are now in a base image. I try to remove the whole disk in oVirt,
>>>> but i still got the error message, that i have to wait. So for me, the
>>>> next step is to create a new VM and migrate everything manualy, this
>>>> will work, but can't be the solution for the other VM, which is
>>>> productive and it have the same problem.
>>>>
>>>>
>>>>
>>>> Some information about:
>>>>
>>>> *****************
>>>> [root at lin-ovirt7 images]# vdsm-tool dump-volume-chains
>>>> d6e6656d-7aaf-4c5b-bb93-cd6134ed9654
>>>>
>>>> Images volume chains (base volume first)
>>>>
>>>> image: f3cfefd2-d467-41d5-a054-5b01f81a21b4
>>>>
>>>> - a018521a-bd3a-4322-ac79-52d15e95639e
>>>> status: OK, voltype: INTERNAL, format: RAW, legality:
>>>> LEGAL, type: SPARSE
>>>>
>>>> - 2e2f0b4a-b015-4b50-8d10-51726de460a9
>>>> status: OK, voltype: INTERNAL, format: COW, legality:
>>>> LEGAL, type: SPARSE
>>>>
>>>> - 804ffcc3-446f-4c56-ba99-ab90c7951a6f
>>>> status: OK, voltype: LEAF, format: COW, legality:
>>>> LEGAL,
>>>> type: SPARSE
>>>> *****************
>>>> [root at lin-ovirt7 images]# ls -altrh
>>>> f3cfefd2-d467-41d5-a054-5b01f81a21b4/
>>>> total 34G
>>>> -rw-rw----+ 1 vdsm kvm 1.0M 2. Mai 21:03
>>>> a018521a-bd3a-4322-ac79-52d15e95639e.lease
>>>> -rw-rw----+ 1 vdsm kvm 1.0M 2. Mai 21:03
>>>> 2e2f0b4a-b015-4b50-8d10-51726de460a9.lease
>>>> -rw-r--r--+ 1 vdsm kvm 260 2. Mai 21:03
>>>> 804ffcc3-446f-4c56-ba99-ab90c7951a6f.meta
>>>> -rw-rw----+ 1 vdsm kvm 1.0M 2. Mai 21:03
>>>> 804ffcc3-446f-4c56-ba99-ab90c7951a6f.lease
>>>> -rw-rw----+ 1 vdsm kvm 300G 2. Mai 22:26
>>>> a018521a-bd3a-4322-ac79-52d15e95639e
>>>> -rw-rw----+ 1 vdsm kvm 77M 2. Mai 22:27
>>>> 2e2f0b4a-b015-4b50-8d10-51726de460a9
>>>> -rw-rw----+ 1 vdsm kvm 3.5G 2. Mai 22:34
>>>> 804ffcc3-446f-4c56-ba99-ab90c7951a6f
>>>> -rw-r--r--+ 1 vdsm kvm 364 2. Mai 22:34
>>>> a018521a-bd3a-4322-ac79-52d15e95639e.meta
>>>> -rw-r--r--+ 1 vdsm kvm 264 2. Mai 22:34
>>>> 2e2f0b4a-b015-4b50-8d10-51726de460a9.meta
>>>> drwxr-xr-x+ 2 vdsm kvm 11 2. Mai 22:34 .
>>>> drwxr-xr-x+ 50 vdsm kvm 50 3. Mai 14:30 ..
>>>> [root at lin-ovirt7 images]#
>>>> *****************
>>>>
>>>> I attach some line from the engine.log, maybe someone can help, if you
>>>> need more information everything is here.
>>>>
>>>> gruss ivo
>>>>
>>>>
>>>>
>>>
>>> _______________________________________________
>>> Users mailing list
>>> Users at ovirt.org
>>> http://lists.ovirt.org/mailman/listinfo/users
>>
>> --
>> Nathanaël Blanchet
>>
>> Supervision réseau
>> Pôle Infrastrutures Informatiques
>> 227 avenue Professeur-Jean-Louis-Viala
>> 34193 MONTPELLIER CEDEX 5
>> Tél. 33 (0)4 67 54 84 55
>> Fax 33 (0)4 67 54 84 14
>> blanchet at abes.fr
>
--
Nathanaël Blanchet
Supervision réseau
Pôle Infrastrutures Informatiques
227 avenue Professeur-Jean-Louis-Viala
34193 MONTPELLIER CEDEX 5
Tél. 33 (0)4 67 54 84 55
Fax 33 (0)4 67 54 84 14
blanchet at abes.fr
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