[LU-6236] ost_prolong_locks()) ASSERTION( lock->l_flags & 0x0000000000000020ULL ) failed

• Status: Resolved
• Project: Lustre
• Affects Version/s: Lustre 2.5.3
• Type: Bug
• Priority: Minor
• Reporter: Gregoire Pichon
• Assignee: Bruno Faccini (Inactive)
• Resolution: Duplicate
• Severity: 3

Description

This ticket reports the same issue than LU-5522.

It occured at customer site on Lustre version 2.5.3 with a few additional patches.

According to the Bull support team, the issue could be a side effect of the fix #10492 for LU-2827, which is one of the addtional patch we apply on top of 2.5.3.

I have posted the patch #13744 in b2_5, which is the backport of the master patch #11634 that fixes LU-5522.

If the support assumption is confirmed, since LU-2827 is integrated into the future 2.5.4 maintenance release, it will be required to have this fix in 2.5.4 also.

Issue Links

• is related to: LU-5522 ofd_prolong_extent_locks()) ASSERTION...

Comments

[Jodi Levi (Inactive)]

Bruno,
Could you have a look at this one and comment?
Thank you!

[Bruno Travouillon (Inactive)]

Lustre 2.5.3 + LU-2827 has been installed on 01/21. First occurrence of this LBUG happened on 01/23. Then we had 6 LBUG in a row (2 hours window) on 02/05, and one on another filesystem on monday. We have 5000+ Lustre clients. I think this fix should be considered for inclusion in 2.5.4.

If you need further information, please let me know.

[Bruno Faccini (Inactive)]

Hello Bruno,
There is no evidence that this problem is a regression from patch LU-2827, but I agree with you that Gregoire's b2_5 version of patch for LU-5522 should be included in 2.5.4.