[ovirt-users] Import Domain and snapshot issue ... please help !!!

Enrico Becchetti enrico.becchetti at pg.infn.it
Wed Feb 14 14:53:49 UTC 2018


Dear All,
old snapsahots seem to be the problem. In fact domain DATA_FC running in 
3.5 had some
lvm snapshot volume. Before deactivate DATA_FC  I didin't remove this 
snapshots so when
I attach this volume to new ovirt 4.2 and import all vm at the same time 
I also import
all snapshots but now How I can remove them ? Throught ovirt web 
interface the remove
tasks running are still hang. Are there any other methods ?
Thank to following this case.
Best Regads
Enrico

Il 14/02/2018 14:34, Maor Lipchuk ha scritto:
> Seems like all the engine logs are full with the same error.
> From vdsm.log.16.xz I can see an error which might explain this failure:
>
> 2018-02-12 07:51:16,161+0100 INFO  (ioprocess communication (40573)) 
> [IOProcess] Starting ioprocess (__init__:447)
> 2018-02-12 07:51:16,201+0100 INFO  (jsonrpc/3) [vdsm.api] FINISH 
> mergeSnapshots return=None from=::ffff:10.0.0.46,57032, 
> flow_id=fd4041b3-2301-44b0-aa65-02bd089f6568, 
> task_id=1be430dc-eeb0-4dc9-92df-3f5b7943c6e0 (api:52)
> 2018-02-12 07:51:16,275+0100 INFO  (jsonrpc/3) [jsonrpc.JsonRpcServer] 
> RPC call Image.mergeSnapshots succeeded in 0.13 seconds (__init__:573)
> 2018-02-12 07:51:16,276+0100 INFO  (tasks/1) 
> [storage.ThreadPool.WorkerThread] START task 
> 1be430dc-eeb0-4dc9-92df-3f5b7943c6e0 (cmd=<bound method Task.commit of 
> <vdsm.storage.task.Task instance at 0x7fa1a0785248>>, args=None) 
> (threadPool:208)
> 2018-02-12 07:51:16,543+0100 INFO  (tasks/1) [storage.Image] 
> sdUUID=47b7c9aa-ef53-48bc-bb55-4a1a0ba5c8d5 vmUUID= 
> imgUUID=ee9ab34c-47a8-4306-95d7-dd4318c69ef5 
> ancestor=9cdc96de-65b7-4187-8ec3-8190b78c1825 
> successor=8f595e80-1013-4c14-a2f5-252bce9526fdpostZero=False 
> discard=False (image:1240)
> 2018-02-12 07:51:16,669+0100 ERROR (tasks/1) 
> [storage.TaskManager.Task] 
> (Task='1be430dc-eeb0-4dc9-92df-3f5b7943c6e0') Unexpected error (task:875)
> Traceback (most recent call last):
>   File "/usr/lib/python2.7/site-packages/vdsm/storage/task.py", line 
> 882, in _run
>     return fn(*args, **kargs)
>   File "/usr/lib/python2.7/site-packages/vdsm/storage/task.py", line 
> 336, in run
>     return self.cmd(*self.argslist, **self.argsdict)
>   File "/usr/lib/python2.7/site-packages/vdsm/storage/securable.py", 
> line 79, in wrapper
>     return method(self, *args, **kwargs)
>   File "/usr/lib/python2.7/site-packages/vdsm/storage/sp.py", line 
> 1853, in mergeSnapshots
>     discard)
>   File "/usr/lib/python2.7/site-packages/vdsm/storage/image.py", line 
> 1251, in merge
>     srcVol = vols[successor]
> KeyError: u'8f595e80-1013-4c14-a2f5-252bce9526fd'
>
> Ala, maybe you know if there is any known issue with mergeSnapshots?
> The usecase here are VMs from oVirt 3.5 which got registered to oVirt 4.2.
>
> Regards,
> Maor
>
>
> On Wed, Feb 14, 2018 at 10:11 AM, Enrico Becchetti 
> <enrico.becchetti at pg.infn.it <mailto:enrico.becchetti at pg.infn.it>> wrote:
>
>       Hi,
>     also you can download them throught these
>     links:
>
>     https://owncloud.pg.infn.it/index.php/s/QpsTyGxtRTPYRTD
>     <https://owncloud.pg.infn.it/index.php/s/QpsTyGxtRTPYRTD>
>     https://owncloud.pg.infn.it/index.php/s/ph8pLcABe0nadeb
>     <https://owncloud.pg.infn.it/index.php/s/ph8pLcABe0nadeb>
>
>     Thanks again !!!!
>
>     Best Regards
>     Enrico
>
>>     Il 13/02/2018 14:52, Maor Lipchuk ha scritto:
>>>
>>>
>>>     On Tue, Feb 13, 2018 at 3:51 PM, Maor Lipchuk
>>>     <mlipchuk at redhat.com <mailto:mlipchuk at redhat.com>> wrote:
>>>
>>>
>>>         On Tue, Feb 13, 2018 at 3:42 PM, Enrico Becchetti
>>>         <enrico.becchetti at pg.infn.it
>>>         <mailto:enrico.becchetti at pg.infn.it>> wrote:
>>>
>>>             see the attach files please ... thanks for your
>>>             attention !!!
>>>
>>>
>>>
>>>         Seems like the engine logs does not contain the entire
>>>         process, can you please share older logs since the import
>>>         operation?
>>>
>>>
>>>     And VDSM logs as well from your host
>>>
>>>             Best Regards
>>>             Enrico
>>>
>>>
>>>             Il 13/02/2018 14:09, Maor Lipchuk ha scritto:
>>>>
>>>>
>>>>             On Tue, Feb 13, 2018 at 1:48 PM, Enrico Becchetti
>>>>             <enrico.becchetti at pg.infn.it
>>>>             <mailto:enrico.becchetti at pg.infn.it>> wrote:
>>>>
>>>>                  Dear All,
>>>>                 I have been using ovirt for a long time with three
>>>>                 hypervisors and an external engine running in a
>>>>                 centos vm .
>>>>
>>>>                 This three hypervisors have HBAs and access to
>>>>                 fiber channel storage. Until recently I used
>>>>                 version 3.5, then I reinstalled everything from
>>>>                 scratch and now I have 4.2.
>>>>
>>>>                 Before formatting everything, I detach the storage
>>>>                 data domani (FC) with the virtual machines and
>>>>                 reimported it to the new 4.2 and all went well. In
>>>>                 this domain there were virtual machines with and
>>>>                 without snapshots.
>>>>
>>>>                 Now I have two problems. The first is that if I try
>>>>                 to delete a snapshot the process is not end
>>>>                 successful and remains hanging and the second
>>>>                 problem is that
>>>>                 in one case I lost the virtual machine !!!
>>>>
>>>>
>>>>
>>>>             Not sure that I fully understand the scneario.'
>>>>             How was the virtual machine got lost if you only tried
>>>>             to delete a snapshot?
>>>>
>>>>
>>>>                 So I need your help to kill the three running
>>>>                 zombie tasks because with taskcleaner.sh I can't do
>>>>                 anything and then I need to know how I can delete
>>>>                 the old snapshots
>>>>                 made with the 3.5 without losing other data or
>>>>                 without having new processes that terminate correctly.
>>>>
>>>>                 If you want some log files please let me know.
>>>>
>>>>
>>>>
>>>>             Hi Enrico,
>>>>
>>>>             Can you please attach the engine and VDSM logs
>>>>
>>>>
>>>>                 Thank you so much.
>>>>                 Best Regards
>>>>                 Enrico
>>>>
>>>>
>>>>
>>>>                 _______________________________________________
>>>>                 Users mailing list
>>>>                 Users at ovirt.org <mailto:Users at ovirt.org>
>>>>                 http://lists.ovirt.org/mailman/listinfo/users
>>>>                 <http://lists.ovirt.org/mailman/listinfo/users>
>>>>
>>>>
>>>
>>>             -- 
>>>             _______________________________________________________________________
>>>
>>>             Enrico Becchetti                    Servizio di Calcolo e Reti
>>>
>>>             Istituto Nazionale di Fisica Nucleare - Sezione di Perugia
>>>             Via Pascoli,c/o Dipartimento di Fisica  06123 Perugia (ITALY)
>>>             Phone:+39 075 5852777 <tel:+39%20075%20585%202777>              Mail: Enrico.Becchetti<at>pg.infn.it <http://pg.infn.it>
>>>             ______________________________________________________________________
>>>
>>>
>>>
>>
>>     -- 
>>     _______________________________________________________________________
>>
>>     Enrico Becchetti                    Servizio di Calcolo e Reti
>>
>>     Istituto Nazionale di Fisica Nucleare - Sezione di Perugia
>>     Via Pascoli,c/o Dipartimento di Fisica  06123 Perugia (ITALY)
>>     Phone:+39 075 5852777 <tel:+39%20075%20585%202777>              Mail: Enrico.Becchetti<at>pg.infn.it <http://pg.infn.it>
>>     ______________________________________________________________________
>
>
>     -- 
>     _______________________________________________________________________
>
>     Enrico Becchetti                    Servizio di Calcolo e Reti
>
>     Istituto Nazionale di Fisica Nucleare - Sezione di Perugia
>     Via Pascoli,c/o Dipartimento di Fisica  06123 Perugia (ITALY)
>     Phone:+39 075 5852777 <tel:+39%20075%20585%202777>              Mail: Enrico.Becchetti<at>pg.infn.it <http://pg.infn.it>
>     ______________________________________________________________________
>
>

-- 
_______________________________________________________________________

Enrico Becchetti                    Servizio di Calcolo e Reti

Istituto Nazionale di Fisica Nucleare - Sezione di Perugia
Via Pascoli,c/o Dipartimento di Fisica  06123 Perugia (ITALY)
Phone:+39 075 5852777             Mail: Enrico.Becchetti<at>pg.infn.it
______________________________________________________________________

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