[LU-9227] Changing rate of a TBF rule loses control in some testcases

• Type: Bug
• Resolution: Fixed
• Priority: Minor
• Fix Version/s: Lustre 2.10.0
• Labels: patch
• Severity: 3
• Assignee: Qian Yingjin (Inactive)
• Reporter: Qian Yingjin (Inactive)

Description

In the following test cases, changing rate of a TBF rule lose control:

start dd_0 {dd.0} 1000
dd if=/dev/zero of=/mnt/lustre/test bs=1M count=100
start dd_1000 {dd.1000} 1000

After ran above commands, changing rate of dd_0 takes no effect.
The reason is:

starting rule dd_1000 increases the sequence, but the sequence number of the class with id "dd.0" does not change accordingly, resulting in failure of rate change.

Issue Links

• is related to: LU-9140 sanityn test_77j test_77k: The read / write rate exceeds x% of preset rate
• is related to: LU-3558 NRS TBF policy for QoS purposes

Comments

[Gerrit Updater]

Sebastien Buisson ([e-mail]) uploaded a new patch: https://review.whamcloud.com/28812
Subject: LU-9227 lustre: record denied OPEN in Changelogs
Project: fs/lustre-release
Branch: master
Current Patch Set: 1
Commit: 83fb3bc6ce1b44f88157962b0bcf4ef128285610

[Peter Jones]

Landed for 2.10

[Gerrit Updater]

Oleg Drokin ([e-mail]) merged in patch https://review.whamcloud.com/26085/
Subject: LU-9227 nrs: Rate change of a TBF rule loses control
Project: fs/lustre-release
Branch: master
Current Patch Set:
Commit: 3fcefcaafcdbc532109042f993a0f28f7f553cf3

[Gerrit Updater]

Yingjin Qian ([e-mail]) uploaded a new patch: https://review.whamcloud.com/26085
Subject: LU-9227 nrs: Rate change of a TBF rule loses control
Project: fs/lustre-release
Branch: master
Current Patch Set: 1
Commit: c7f9a92ad469f2a27f61aca129dc36f04b979519

[Qian Yingjin (Inactive)]

It is a new bug, I don't think it is related to LU-9140...

[Emoly Liu]

Is this related to LU-9140 ?