[ovirt-users] Snapshot is "Locked" - Can't do anything with the VM
Nathanaël Blanchet
blanchet at abes.fr
Wed May 4 07:40:32 EDT 2016
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."
>>
>> 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
>>
>>
>>
>
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--
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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