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

Maor Lipchuk mlipchuk at redhat.com
Wed Feb 14 13:34:56 UTC 2018


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> 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/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> wrote:
>
>>
>> On Tue, Feb 13, 2018 at 3:42 PM, Enrico Becchetti <
>> 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> 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
>>>> 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 <+39%20075%20585%202777>             Mail: Enrico.Becchetti<at>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 <+39%20075%20585%202777>             Mail: Enrico.Becchetti<at>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 <+39%20075%20585%202777>             Mail: Enrico.Becchetti<at>pg.infn.it
> ______________________________________________________________________
>
>
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