[LU-4322] sanity test_101a: too many discarded pages

• Type: Bug
• Resolution: Fixed
• Priority: Minor
• Fix Version/s: Lustre 2.13.0
• Affects Version/s: Lustre 2.6.0
• Severity: 3
• Assignee: Patrick Farrell (Inactive)
• Reporter: Maloo

Description

This issue was created by maloo for Di Wang <[e-mail]>

This issue relates to the following test suite run: http://maloo.whamcloud.com/test_sets/54474df8-57af-11e3-b4ee-52540035b04c.

The sub-test test_101a failed with the following error:

too many (1163) discarded pages

Info required for matching: sanity 101a

Comments

[Peter Jones]

Landed for 2.13

[Gerrit Updater]

Oleg Drokin ([e-mail]) merged in patch https://review.whamcloud.com/35027/
Subject: LU-4322 tests: re-enable 101a in dne config
Project: fs/lustre-release
Branch: master
Current Patch Set:
Commit: ff78e1aa33bbbaa6073e808c6bb6630e795e89d4

[Gerrit Updater]

Patrick Farrell ([e-mail]) uploaded a new patch: https://review.whamcloud.com/35027
Subject: LU-4322 tests: re-enable 101a in dne config
Project: fs/lustre-release
Branch: master
Current Patch Set: 1
Commit: cafffc8566fbcaaa6db221cc9a724d09c52d1b30

[Andreas Dilger]

The patch was landed to disable sanity.sh test_101a, but the problem was never actually fixed. The bug shouldn't have been closed.

[Jodi Levi (Inactive)]

Patch landed to Master.

[Di Wang (Inactive)]

http://review.whamcloud.com/8428

[Di Wang (Inactive)]

Hmm, I do not know why this only happens in DNE, since it is nothing different compared single MDT run. The only reason here, might be in DNE it use 2 OSS (4 OSTs each OSS), in single MDT, it use single OSS with 8 OSTs. I do not know why we only use 1 OSS in single MDT test.

And also discarded pages might be related with memory pressure, but I did not figure out the real reason yet. For now, I will disable this test for DNE.