[LU-11355] Add Lustre trim support

• Type: Improvement
• Resolution: Fixed
• Priority: Minor
• Fix Version/s: Lustre 2.13.0, Lustre 2.12.3
• Labels: patch ssdopt
• Assignee: Wang Shilong (Inactive)
• Reporter: Wang Shilong (Inactive)

Description

Similar idea of fstrim, use SSD as backend of Lustre filesystem might have performances
drop with gc running in the background.

We have mount option '-o discard'(etc) for ldiskfs to trigger discard automatically
whenever filesystem free some space, but as our benchmarking this could
introduce latency too, and also this is somehow out of control.

So it is desirable for administrators to do trim manually, for example
doing trim if system are idle.

Issue Links

• is related to: LU-137 ioctl passthrough mechanism for Lustre OST/MDT mountpoints
• is related to: LU-10410 Verify fstrim functionality on MDT

Comments

[Gerrit Updater]

Oleg Drokin ([e-mail]) merged in patch https://review.whamcloud.com/35196/
Subject: LU-11355 lustre: enable fstrim on lustre device
Project: fs/lustre-release
Branch: b2_12
Current Patch Set:
Commit: a1ccd957f0667398a1685dd1932bf35153a7f160

[Gerrit Updater]

Minh Diep ([e-mail]) uploaded a new patch: https://review.whamcloud.com/35196
Subject: LU-11355 lustre: enable fstrim on lustre device
Project: fs/lustre-release
Branch: b2_12
Current Patch Set: 1
Commit: 83f29e0886f4bf4592ef1b4c21ecedae32bbc1ea

[Peter Jones]

Landed for 2.13

[Gerrit Updater]

Oleg Drokin ([e-mail]) merged in patch https://review.whamcloud.com/33131/
Subject: LU-11355 lustre: enable fstrim on lustre device
Project: fs/lustre-release
Branch: master
Current Patch Set:
Commit: d5be104cc9b0c7a71b30aa5feb16873aa30803a9

[Gerrit Updater]

Wang Shilong ([e-mail]) uploaded a new patch: https://review.whamcloud.com/34636
Subject: LU-11355 lustre: add lustre trim device support
Project: fs/lustre-release
Branch: master
Current Patch Set: 1
Commit: e768efa6a77bff54cb60271b77d3c3e8cc0f5173

[DELBARY Gael (Inactive)]

Hi,

Nice job, agree it will be very useful to have this feature.

 

[Gerrit Updater]

Wang Shilong ([e-mail]) uploaded a new patch: https://review.whamcloud.com/33131
Subject: LU-11355 lustre: add lustre trim device support
Project: fs/lustre-release
Branch: master
Current Patch Set: 1
Commit: 45cde02b17b77bcd230f2b083d6f91d5687717ca