[Gluster-devel] Need help diagnosing regression-test crashes

[Atin Mukherjee]

-Atin
Sent from one plus one
On 09-Apr-2016 9:32 am, "Rajesh Joseph" <rjoseph at redhat.com> wrote:
>
>
>
> On Sat, Apr 9, 2016 at 2:05 AM, Jeff Darcy <jdarcy at redhat.com> wrote:
>>
>> Upon further investigation, I've been able to determine that the problem
>> lies in this line of our generic cleanup routine.
>>
>>         type cleanup_lvm &>/dev/null && cleanup_lvm || true;
>>
>> This works great if snapshot.rc we're at the end of a test that included
>> snapshot.rc (which defines cleanup_lvm), but we've generally been moving
>> away from that in favor of calling it only at the beginning.  Thus, when
>> we go from a snapshot test to a non-snapshot test, the cleanup at the
>> beginning of the latter does *not* clean up any LVM stuff that's left
>> over.  What might have been a simple and correctly attributed failure in
>> the snapshot test can instead show up later.  In this case, the sequence
>> of events is as follows:
>>
>>  1) bug-1322772 (snapshot) test starts glusterd
>>
>>  2) bug-1322772 exits while the new glusterd is still initializing
>>
>>  3) run-tests.sh looks for new core files and finds none
>>
>>  4) run-tests.sh starts bug-1002207 (stripe) test
>>
>>  5) glusterd from bug-1322772 dumps core
>>
>>  6) bug-1002207 test completes
>>
>>  7) run-tests.sh sees new core and misattributes it to bug-1002207
>>
>> The question is what to do about this.  Unconditionally calling
>> lvm_cleanup from generic cleanup is simple, but might make regression
>> tests noticeably slower.  Another possibility would be to change all
>> snapshot tests to call cleanup (or at least cleanup_lvm) at the end, or
>> use bash's "trap" mechanism to ensure the same.  I'm not wild about any
>> of those, but lean toward the "trap" approach.  Anyone else have any
>> opinions?
>
>
> I think each snapshot test script should call cleanup_lvm and trap is a
> great suggestion.
>
> atinm: Can you please look into the crash in the following test case?
> bugs/snapshot/bug-1322772-real-path-fix-for-snapshot.t

Do we have the link to the crash?
>
>
>>
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>
>
>
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-Atin
Sent from one plus one
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