[LU-9796] Speedup file creation under heavy concurrency

• Type: Improvement
• Resolution: Fixed
• Priority: Minor
• Fix Version/s: Lustre 2.11.0, Lustre 2.10.5
• Labels: patch
• Assignee: Hongchao Zhang
• Reporter: Shuichi Ihara (Inactive)

Description

In general, there are some metadata performance regression with/without quota.
Now, Project quota introduced, it's time to measure metadata and improve metadata performance when quota is enabled.
Also, it seems upstream kernel has some performance optimizations for ext4 when quota enabled. It might be possible to get those optimization for Lustre.

Comments

[Minh Diep]

wangshilong, are you planning to submit any more patch since the #31683 reverted?

[Gerrit Updater]

Bob Glossman ([e-mail]) uploaded a new patch: https://review.whamcloud.com/32295
Subject: LU-9796 ldiskfs: improve inode allocation performance
Project: fs/lustre-release
Branch: b2_10
Current Patch Set: 1
Commit: e5e6c26a0f3137f4dbd2bb300a437116c957727d

[Patrick Farrell (Inactive)]

OK, thanks!  I'll keep an eye on this bug, then.

[Peter Jones]

No. AFAIK these are unconfirmed suspicions from support situations. We're just erring on the side of caution for the time being.

[Patrick Farrell (Inactive)]

Are there any details on the failures seen, like an LU tracking them or anything?

[Gerrit Updater]

Oleg Drokin ([e-mail]) merged in patch https://review.whamcloud.com/31683/
Subject: Revert "LU-9796 kernel: improve metadata performaces for RHEL7"
Project: fs/lustre-release
Branch: master
Current Patch Set:
Commit: 2083ffd1bc6c772972834b50e5aef2118c88658d

[Gerrit Updater]

Andreas Dilger ([e-mail]) uploaded a new patch: https://review.whamcloud.com/31683
Subject: Revert "LU-9796 kernel: improve metadata performaces for RHEL7"
Project: fs/lustre-release
Branch: master
Current Patch Set: 1
Commit: 4232b2842ff720791f2afb55b80ba6640142f624

[Peter Jones]

Landed for 2.11

[Gerrit Updater]

Oleg Drokin ([e-mail]) merged in patch https://review.whamcloud.com/28276/
Subject: LU-9796 kernel: improve metadata performaces for RHEL7
Project: fs/lustre-release
Branch: master
Current Patch Set:
Commit: 17fe3c192e101ace75b2f4d7f7e9ff7d8d85480e

[Bob Glossman (Inactive)]

I see recent mods in master have landed for this issue, but only for RHEL 7.x
Is this not needed for RHEL 6.x, SLES 11/12, Ubuntu ?

[Peter Jones]

Does the remaining patch need to land too or can that be abandoned and this ticket marked resolved?