[Gluster-devel] [Gluster-Maintainers] Release 5: Master branch health report (Week of 30th July)

Xavi Hernandez xhernandez at redhat.com
Thu Aug 2 12:40:46 UTC 2018 

On Thu, Aug 2, 2018 at 1:42 PM Kotresh Hiremath Ravishankar <
khiremat at redhat.com> wrote:

>
>
> On Thu, Aug 2, 2018 at 5:05 PM, Atin Mukherjee <atin.mukherjee83 at gmail.com
> > wrote:
>
>>
>>
>> On Thu, Aug 2, 2018 at 4:37 PM Kotresh Hiremath Ravishankar <
>> khiremat at redhat.com> wrote:
>>
>>>
>>>
>>> On Thu, Aug 2, 2018 at 3:49 PM, Xavi Hernandez <xhernandez at redhat.com>
>>> wrote:
>>>
>>>> On Thu, Aug 2, 2018 at 6:14 AM Atin Mukherjee <amukherj at redhat.com>
>>>> wrote:
>>>>
>>>>>
>>>>>
>>>>> On Tue, Jul 31, 2018 at 10:11 PM Atin Mukherjee <amukherj at redhat.com>
>>>>> wrote:
>>>>>
>>>>>> I just went through the nightly regression report of brick mux runs
>>>>>> and here's what I can summarize.
>>>>>>
>>>>>>
>>>>>> =========================================================================================================================================================================
>>>>>> Fails only with brick-mux
>>>>>>
>>>>>> =========================================================================================================================================================================
>>>>>> tests/bugs/core/bug-1432542-mpx-restart-crash.t - Times out even
>>>>>> after 400 secs. Refer
>>>>>> https://fstat.gluster.org/failure/209?state=2&start_date=2018-06-30&end_date=2018-07-31&branch=all,
>>>>>> specifically the latest report
>>>>>> https://build.gluster.org/job/regression-test-burn-in/4051/consoleText
>>>>>> . Wasn't timing out as frequently as it was till 12 July. But since 27
>>>>>> July, it has timed out twice. Beginning to believe commit
>>>>>> 9400b6f2c8aa219a493961e0ab9770b7f12e80d2 has added the delay and now 400
>>>>>> secs isn't sufficient enough (Mohit?)
>>>>>>
>>>>>> tests/bugs/glusterd/add-brick-and-validate-replicated-volume-options.t
>>>>>> (Ref -
>>>>>> https://build.gluster.org/job/regression-test-with-multiplex/814/console)
>>>>>> -  Test fails only in brick-mux mode, AI on Atin to look at and get back.
>>>>>>
>>>>>> tests/bugs/replicate/bug-1433571-undo-pending-only-on-up-bricks.t (
>>>>>> https://build.gluster.org/job/regression-test-with-multiplex/813/console)
>>>>>> - Seems like failed just twice in last 30 days as per
>>>>>> https://fstat.gluster.org/failure/251?state=2&start_date=2018-06-30&end_date=2018-07-31&branch=all.
>>>>>> Need help from AFR team.
>>>>>>
>>>>>> tests/bugs/quota/bug-1293601.t (
>>>>>> https://build.gluster.org/job/regression-test-with-multiplex/812/console)
>>>>>> - Hasn't failed after 26 July and earlier it was failing regularly. Did we
>>>>>> fix this test through any patch (Mohit?)
>>>>>>
>>>>>> tests/bitrot/bug-1373520.t - (
>>>>>> https://build.gluster.org/job/regression-test-with-multiplex/811/console)
>>>>>> - Hasn't failed after 27 July and earlier it was failing regularly. Did we
>>>>>> fix this test through any patch (Mohit?)
>>>>>>
>>>>>
>>>>> I see this has failed in day before yesterday's regression run as well
>>>>> (and I could reproduce it locally with brick mux enabled). The test fails
>>>>> in healing a file within a particular time period.
>>>>>
>>>>> *15:55:19* not ok 25 Got "0" instead of "512", LINENUM:55*15:55:19* FAILED COMMAND: 512 path_size /d/backends/patchy5/FILE1
>>>>>
>>>>> Need EC dev's help here.
>>>>>
>>>>
>>>> I'm not sure where the problem is exactly. I've seen that when the test
>>>> fails, self-heal is attempting to heal the file, but when the file is
>>>> accessed, an Input/Output error is returned, aborting heal. I've checked
>>>> that a heal is attempted every time the file is accessed, but it fails
>>>> always. This error seems to come from bit-rot stub xlator.
>>>>
>>>> When in this situation, if I stop and start the volume, self-heal
>>>> immediately heals the files. It seems like an stale state that is kept by
>>>> the stub xlator, preventing the file from being healed.
>>>>
>>>> Adding bit-rot maintainers for help on this one.
>>>>
>>>
>>> Bitrot-stub marks the file as corrupted in inode_ctx. But when the file
>>> and it's hardlink are deleted from that brick and a lookup is done
>>> on the file, it cleans up the marker on getting ENOENT. This is part of
>>> recovery steps, and only md-cache is disabled during the process.
>>> Is there any other perf xlators that needs to be disabled for this
>>> scenario to expect a lookup/revalidate on the brick where
>>> the back end file is deleted?
>>>
>>
>> But the same test doesn't fail with brick multiplexing not enabled. Do we
>> know why?
>>
> Don't know, something to do with perf xlators I suppose. It's not
> repdroduced on my local system with brick-mux enabled as well. But it's
> happening on Xavis' system.
>
> Xavi,
> Could you try with the patch [1] and let me know whether it fixes the
> issue.
>

With the additional performance xlators disabled still happens.

The only thing that I've observed is that if I add a sleep just before
stopping the volume, the test seems to pass always. Maybe there are some
background updates going on ? (ec does background updates, but I'm not sure
how this can be related with the Input/Output error accessing the brick
file).

Xavi


> [1] https://review.gluster.org/#/c/20619/1
>
>>
>>
>>>
>>>> Xavi
>>>>
>>>>
>>>>
>>>>>
>>>>>> tests/bugs/glusterd/remove-brick-testcases.t - Failed once with a
>>>>>> core, not sure if related to brick mux or not, so not sure if brick mux is
>>>>>> culprit here or not. Ref -
>>>>>> https://build.gluster.org/job/regression-test-with-multiplex/806/console
>>>>>> . Seems to be a glustershd crash. Need help from AFR folks.
>>>>>>
>>>>>>
>>>>>> =========================================================================================================================================================================
>>>>>> Fails for non-brick mux case too
>>>>>>
>>>>>> =========================================================================================================================================================================
>>>>>> tests/bugs/distribute/bug-1122443.t 0 Seems to be failing at my setup
>>>>>> very often, with out brick mux as well. Refer
>>>>>> https://build.gluster.org/job/regression-test-burn-in/4050/consoleText
>>>>>> . There's an email in gluster-devel and a BZ 1610240 for the same.
>>>>>>
>>>>>> tests/bugs/bug-1368312.t - Seems to be recent failures (
>>>>>> https://build.gluster.org/job/regression-test-with-multiplex/815/console)
>>>>>> - seems to be a new failure, however seen this for a non-brick-mux case too
>>>>>> -
>>>>>> https://build.gluster.org/job/regression-test-burn-in/4039/consoleText
>>>>>> . Need some eyes from AFR folks.
>>>>>>
>>>>>> tests/00-geo-rep/georep-basic-dr-tarssh.t - this isn't specific to
>>>>>> brick mux, have seen this failing at multiple default regression runs.
>>>>>> Refer
>>>>>> https://fstat.gluster.org/failure/392?state=2&start_date=2018-06-30&end_date=2018-07-31&branch=all
>>>>>> . We need help from geo-rep dev to root cause this earlier than later
>>>>>>
>>>>>> tests/00-geo-rep/georep-basic-dr-rsync.t - this isn't specific to
>>>>>> brick mux, have seen this failing at multiple default regression runs.
>>>>>> Refer
>>>>>> https://fstat.gluster.org/failure/393?state=2&start_date=2018-06-30&end_date=2018-07-31&branch=all
>>>>>> . We need help from geo-rep dev to root cause this earlier than later
>>>>>>
>>>>>> tests/bugs/glusterd/validating-server-quorum.t (
>>>>>> https://build.gluster.org/job/regression-test-with-multiplex/810/console)
>>>>>> - Fails for non-brick-mux cases too,
>>>>>> https://fstat.gluster.org/failure/580?state=2&start_date=2018-06-30&end_date=2018-07-31&branch=all
>>>>>> .  Atin has a patch https://review.gluster.org/20584 which resolves
>>>>>> it but patch is failing regression for a different test which is unrelated.
>>>>>>
>>>>>> tests/bugs/replicate/bug-1586020-mark-dirty-for-entry-txn-on-quorum-failure.t
>>>>>> (Ref -
>>>>>> https://build.gluster.org/job/regression-test-with-multiplex/809/console)
>>>>>> - fails for non brick mux case too -
>>>>>> https://build.gluster.org/job/regression-test-burn-in/4049/consoleText
>>>>>> - Need some eyes from AFR folks.
>>>>>>
>>>>>
>>>
>>>
>>> --
>>> Thanks and Regards,
>>> Kotresh H R
>>> _______________________________________________
>>> Gluster-devel mailing list
>>> Gluster-devel at gluster.org
>>> https://lists.gluster.org/mailman/listinfo/gluster-devel
>>
>>
>
>
> --
> Thanks and Regards,
> Kotresh H R
>
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