[LU-15086] replay-dual: test_10: @@@@@@ FAIL: test_10 failed with 2

• Type: Bug
• Resolution: Fixed
• Priority: Minor
• Fix Version/s: Lustre 2.15.0
• Severity: 3
• Assignee: Alex Zhuravlev
• Reporter: Maloo

Description

This issue was created by maloo for Vladimir Saveliev <[e-mail]>

This issue relates to the following test suite run: https://testing.whamcloud.com/test_sets/2f1edc30-7ddf-4a6c-bc7a-fffbf58435b8

This is relatively regular failure:

Error: 'test_10 failed with 2' 
Failure Rate: 6.00% of most recent 100 runs, 0 skipped (all branches)

Comments

[Peter Jones]

Landed for 2.15

[Gerrit Updater]

"Oleg Drokin <[e-mail]>" merged in patch https://review.whamcloud.com/45308/
Subject: LU-15086 ptlrpc: fix timeout after spurious wakeup
Project: fs/lustre-release
Branch: master
Current Patch Set:
Commit: b8383035406a4b7bee2e6d8674eaef480b3e3b35

[Alex Zhuravlev]

with the patch above I can't reproduce the problem. would like to hear Neil's opinion.

[Peter Jones]

Would we be better off reverting LU-12362 from master?

[Gerrit Updater]

"Alex Zhuravlev <[e-mail]>" uploaded a new patch: https://review.whamcloud.com/45308
Subject: LU-15086 ptlrpc: fix timeout after spurious wakeup
Project: fs/lustre-release
Branch: master
Current Patch Set: 1
Commit: a495c00874105caa299fdf4dfaa482df9b24ad2e

[Alex Zhuravlev]

added a simple check to pltrpcd to catch too long waiting:

LustreError: 5019:0:(ptlrpcd.c:515:ptlrpcd()) ASSERTION( timeout == 0 || end - start < timeout + 4 ) failed: timeout 10, end 97, start 83, diff 14, count 3

i.e. 10 seconds wait was requested, but actually spent 14 seconds waiting, wait_woken() was called 3 times.

yet another interesting example from failed replay-dual:

LustreError: 5009:0:(ptlrpcd.c:513:ptlrpcd()) timeout 19, end 711, start 620, diff 91, count 9