[LU-9966] sanity test_411: fail to trigger a memory allocation error

• Type: Bug
• Resolution: Fixed
• Priority: Minor
• Fix Version/s: Lustre 2.12.0
• Affects Version/s: Lustre 2.12.0
• Severity: 3
• Assignee: Yang Sheng
• Reporter: Maloo

Description

This issue was created by maloo for Bob Glossman <[e-mail]>

This issue relates to the following test suite run: https://testing.hpdd.intel.com/test_sets/32b0aa4c-9502-11e7-ba84-5254006e85c2.

The sub-test test_411 failed with the following error:

fail to trigger a memory allocation error

test_411 is very new. has been failing since 9/1
some (all?) of the instances of FAIL have been seen on sles12sp2/sles12sp3

more:
https://testing.hpdd.intel.com/test_sets/8c6725ca-8f6c-11e7-b5c2-5254006e85c2
https://testing.hpdd.intel.com/test_sets/0a6acf7c-8f8f-11e7-b67f-5254006e85c2

Info required for matching: sanity 411

Issue Links

• is related to: LU-8435 LBUG (osc_cache.c:1290:osc_completion()) ASSERTION( equi(page->cp_state == CPS_PAGEIN, cmd == OBD_BRW_READ) )
• is related to: LU-10366 sanity test 410 fails with 'no inode match'

Comments

[Peter Jones]

Landed for 2.12

[Gerrit Updater]

Oleg Drokin ([e-mail]) merged in patch https://review.whamcloud.com/32293/
Subject: LU-9966 tests: sanity-411 check LBUG direct
Project: fs/lustre-release
Branch: master
Current Patch Set:
Commit: 18637db7ca6fa92ec6ea494a353a5ec46700a30e

[Jian Yu]

+1 on master branch:
https://testing.whamcloud.com/test_sets/8e14dad8-c18f-11e8-a9d9-52540065bddc

[Yang Sheng]

Yes, since the allocation is really depend on situation. So we should avoid to verify dd whether success or not. Anyway, I'll update the patch as this way.

[John Hammond]

Logs show that some allocations are failing but dd is succeeding. Perhaps we should weaken the test to just check that we don't crash.

[James A Simmons]

We see a different but related bug with Ubuntu18.

[Chris Horn]

Just a note: This issue is also seen with Lustre 2.11 on SLES15 RC4

[Gerrit Updater]

Yang Sheng ([e-mail]) uploaded a new patch: https://review.whamcloud.com/32293
Subject: LU-9966 tests: sanity-411 check LBUG direct
Project: fs/lustre-release
Branch: master
Current Patch Set: 1
Commit: eb5551388e81b16704c6655f6a2d0c469b9d5262

[Bruno Faccini (Inactive)]

> I think test_411 just intends to verify not hit on LBUG. So we can avoid to check dd whether success or not.
> Does it necessary?

YangSheng, yes we may do that, but we could also try to find a way to set the conditions that may cause dd to fail.

[Bob Glossman (Inactive)]

another on master:
https://testing.hpdd.intel.com/test_sets/a0416dd0-2f8a-11e8-b6a0-52540065bddc