[LU-8446] metadata-updates: FAIL: wrong timestamps

• Status: Resolved
• Project: Lustre
• Affects Version/s: Lustre 2.9.0
• Fix Version/s: Lustre 2.9.0
• Type: Bug
• Priority: Critical
• Reporter: Jian Yu
• Assignee: Niu Yawei (Inactive)
• Resolution: Fixed
• Severity: 3

Description

metadata-updates test failed as follows:

onyx-40vm2: /mnt/lustre/d0.metadata-updates/onyx-40vm1/testfile [ atime mtime ] expected : 978307200 1115251200 ;  got : 1469410011 1115251200 
onyx-40vm1: /mnt/lustre/d0.metadata-updates/onyx-40vm2/testfile [ atime mtime ] expected : 978307200 1115251200 ;  got : 1469410011 1115251200 
 metadata-updates : @@@@@@ FAIL: wrong timestamps

Maloo reports:
https://testing.hpdd.intel.com/test_sets/825136bc-524f-11e6-bf87-5254006e85c2
https://testing.hpdd.intel.com/test_sets/957409a0-5037-11e6-bf87-5254006e85c2
https://testing.hpdd.intel.com/test_sets/92afe362-5008-11e6-9f8e-5254006e85c2

Issue Links

• is related to: LU-8603 improve metadata-updates.sh with sub-...

Comments

[Joseph Gmitter (Inactive)]

Hi Jian,

Can you determine what build this problem starting occurring at? That will help to narrow in on potential patches that could have introduced this issue.

thanks.
Joe

[Jian Yu]

Hi Joe,

By searching on Maloo, I found the failure started occurring on 2016-06-06:
https://testing.hpdd.intel.com/test_sets/12cab8e0-2c5c-11e6-a0ce-5254006e85c2

The build is https://build.hpdd.intel.com/job/lustre-master/3384. However, it's been removed from Jenkins.

[Saurabh Tandan (Inactive)]

Roughly this issue has occurred around 100 times in past 30 days overall.

[Saurabh Tandan (Inactive)]

This issue was first seen on 2016-06-06 for build# 3384 on master Tag 2.8.53 which was the last build for this tag:
https://testing.hpdd.intel.com/test_sets/12cab8e0-2c5c-11e6-a0ce-5254006e85c2

[Peter Jones]

Niu

Could you please assist with this issue?

Thanks

Peter

[Jian Yu]

I'm not sure why maloo doesn't provide debug log for such kind of test (metadata-updates).

I think this is because the tests in metadata-updates.sh are not wrapped as test_x() sub-tests. While gathering logs, there are no sub-test names in the log files, and then Maloo doesn't import them (LU-8603).

From report https://testing.hpdd.intel.com/test_sets/12cab8e0-2c5c-11e6-a0ce-5254006e85c2, we can see:

Dumping lctl log to /logdir/test_logs/2016-06-05/lustre-master-el6_7-x86_64-vs-lustre-master-el7-x86_64--full--2_17_1__3384__-69908717151380-111335/metadata-updates..*.1465232271.log
CMD: onyx-32vm3,onyx-32vm4,onyx-32vm5.onyx.hpdd.intel.com,onyx-32vm6 /usr/sbin/lctl dk > /logdir/test_logs/2016-06-05/lustre-master-el6_7-x86_64-vs-lustre-master-el7-x86_64--full--2_17_1__3384__-69908717151380-111335/metadata-updates..debug_log.\$(hostname -s).1465232271.log;
         dmesg > /logdir/test_logs/2016-06-05/lustre-master-el6_7-x86_64-vs-lustre-master-el7-x86_64--full--2_17_1__3384__-69908717151380-111335/metadata-updates..dmesg.\$(hostname -s).1465232271.log

I'm not sure whether autotest has deleted those logs or not. If not, you can find them in /home/autotest/logdir/... or /home/autotest2/logdir/... on the test cluster.

[Niu Yawei (Inactive)]

Thanks for the log, Yujian.

The log looks normal: OST updated lvb correctly, and clients even returned correct timestamps on glimplse shortly before the failure point. I'll investigate it futher.

[Gerrit Updater]

Niu Yawei ([e-mail]) uploaded a new patch: http://review.whamcloud.com/22623
Subject: LU-8446 llite: clear inode timestamps after losing UPDATE lock
Project: fs/lustre-release
Branch: master
Current Patch Set: 1
Commit: c631f414ea2d3e9d3acbb653bc85c10f68dcb9d5

[Gerrit Updater]

Oleg Drokin ([e-mail]) merged in patch http://review.whamcloud.com/22623/
Subject: LU-8446 llite: clear inode timestamps after losing UPDATE lock
Project: fs/lustre-release
Branch: master
Current Patch Set:
Commit: 4a5e3556a6016cf5ded9c4126454916ab847a1b6

[Peter Jones]

Landed for 2.9