[LU-2776] Test failure: sanityn, subtest test_51a "multiop is still there"

• Type: Bug
• Resolution: Fixed
• Priority: Major
• Fix Version/s: Lustre 2.4.0, Lustre 2.11.0
• Affects Version/s: Lustre 2.4.0, Lustre 2.5.0
• Labels: zfs
• Severity: 3
• Assignee: Jinshan Xiong (Inactive)
• Reporter: Maloo

Description

This issue was created by maloo for Nathaniel Clark <[e-mail]>

This issue relates to the following test suite run: https://maloo.whamcloud.com/test_sets/5c072382-70f7-11e2-9241-52540035b04c.

The sub-test test_51a failed with the following error:

multiop is still there

Info required for matching: sanityn 51a

Comments

[Peter Jones]

Landed for 2.11

[Gerrit Updater]

Oleg Drokin ([e-mail]) merged in patch https://review.whamcloud.com/27662/
Subject: LU-2776 tests: waiting multiop finished in sanityn:51a
Project: fs/lustre-release
Branch: master
Current Patch Set:
Commit: 9b63762c47732b8d3cb17935d528e0c0fad814db

[Gerrit Updater]

Yang Sheng ([e-mail]) uploaded a new patch: https://review.whamcloud.com/27662
Subject: LU-2776 tests: waiting multiop finished in sanityn:51a
Project: fs/lustre-release
Branch: master
Current Patch Set: 1
Commit: 2426f20903fda471a7dfb33b66df4da4e9de88cb

[Keith Mannthey (Inactive)]

Another occurrence:

https://maloo.whamcloud.com/test_sets/3c2b25fe-e08c-11e2-b3fd-52540035b04c

test_51a 	

    Error: 'multiop is still there'
    Failure Rate: 28.00% of last 100 executions [all branches] 

This seems to be hitting a bit.

[Bruno Faccini (Inactive)]

Just hit one more occurence in https://maloo.whamcloud.com/test_sets/aa92a7ca-de1a-11e2-b04c-52540035b04c, with the new sleep 1s from the patch.

I am wondering if multiop is stuck somewhere, is there a way we get a full backtraces dump from this specific test, like for time-outs ??

[Jinshan Xiong (Inactive)]

let's reopen it.

[Bob Glossman (Inactive)]

Even though this bug is closed I think I see a fresh instance in https://maloo.whamcloud.com/test_sets/7548a8bc-9fcc-11e2-86dc-52540035b04c

Is this the same bug, or should I open a fresh bug report?

[Peter Jones]

Landed for 2.4

[Jinshan Xiong (Inactive)]

patch is at: http://review.whamcloud.com/5321

[Jinshan Xiong (Inactive)]

Hi Andreas, it turns out your guess is right. From the log, the read was started after sleeping 2 seconds. I will fix it.