[LU-11698] Add debugfs file to print checksum speed

• Type: Improvement
• Resolution: Fixed
• Priority: Minor
• Fix Version/s: Lustre 2.15.0
• Labels: easy
• Assignee: Arshad Hussain
• Reporter: Andreas Dilger

Description

Add a /sys or /sys/kernel/debug file that prints out the speed of the different checksum types. This is computed at libcfs module insert time and logged into the debug log, but are not available if the debug log has wrapped.

Comments

[Arshad Hussain]

Andreas, yes. I will take this up. Opened LU-14889 for this.

[Andreas Dilger]

Arshad, one thing I noticed is that there are "{osc,mdc}.*.checksum_type files on the client, but there are no corresponding "{mdt,ofd}.*.checksum_type" files on the servers that report which checksum types are currently supported. It isn't possible to see this just from the client-side checksum_type because those may only list the fastest subset of types reported by the server.

Would you be interested to implement this?

[Peter Jones]

Landed for 2.15

[Gerrit Updater]

Oleg Drokin ([e-mail]) merged in patch https://review.whamcloud.com/43943/
Subject: LU-11698 libcfs: Add checksum speed under /sys/fs
Project: fs/lustre-release
Branch: master
Current Patch Set:
Commit: d775f9ae37975c853984b67f6d1a21e6ec8a8c3d

[Gerrit Updater]

Arshad Hussain ([e-mail]) uploaded a new patch: https://review.whamcloud.com/43943
Subject: LU-11698 libcfs: Add checksum speed in debugfs
Project: fs/lustre-release
Branch: master
Current Patch Set: 1
Commit: ec239b70d53e0e43a4c29f1265fe3d65de339b68