[LU-5731] sanity-lfsck test_18a:

• Type: Bug
• Resolution: Fixed
• Priority: Critical
• Fix Version/s: Lustre 2.7.0
• Affects Version/s: Lustre 2.7.0
• Labels: HB
• Severity: 3
• Assignee: nasf (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://testing.hpdd.intel.com/test_sets/8e09d60c-48fc-11e4-be93-5254006e85c2
https://testing.hpdd.intel.com/test_sets/8384ce00-5179-11e4-b4cf-5254006e85c2

The sub-test test_18a failed with the following error:

(6.1) Expect 1 fixed on mds1, but got: 2

Please provide additional information about the failure here.

Info required for matching: sanity-lfsck 18a

Comments

[Gerrit Updater]

Oleg Drokin ([e-mail]) merged in patch http://review.whamcloud.com/12359/
Subject: LU-5731 osp: flush async updates for osp_sync
Project: fs/lustre-release
Branch: master
Current Patch Set:
Commit: 138a8d14b48951b32a25d2ceada583bfdba494ce

[Jian Yu]

One more instance on master branch: https://testing.hpdd.intel.com/test_sets/71f79e8a-59e7-11e4-aa32-5254006e85c2

[nasf (Inactive)]

Here is the patch:
http://review.whamcloud.com/#/c/12359/

[nasf (Inactive)]

sanity-lfsck test_18a assume that before the test start, there were no orphan OST-objects in the system. It is the test_18a itself to generate orphan OST-object during the test. Unfortunately, there were some orphan OST-object left from other former tests. So more orphan OST-objects have been found and repaired by test_18a. What we need to do is NOT to adjust the test scripts, but found out why there are orphan OST-objects before the test_18a.

After some investigation, I found that in sanity test_14, the async updates for LFSCK have not been handled completely when the LFSCK finished, although before the LFSCK exit, it called dt_sync(), but current dt_sync() ignores the async updates that are handled by background ptlrpcd threads directly. Then those async LFSCK updates generated some orphan OST-objects, and made the test environment dirty.