[LU-10277] DNE3: allow 'lfs mkdir' to create directory on MDS which has more space

• Status: Resolved
• Project: Lustre
• Affects Version/s: Lustre 2.10.0
• Fix Version/s: Lustre 2.11.0
• Type: Improvement
• Priority: Major
• Reporter: Lai Siyao
• Assignee: Lai Siyao
• Resolution: Fixed
• Labels: dne3

Description

On DNE system, it will be good to allow 'lfs mkdir' to create directory on MDT which has more free space. In this way, user doesn't need to care much about balance between MDTs.

Issue Links

• is cloned by: LU-10784 DNE3: mkdir() automatically create re...
• is duplicated by: LU-7827 DNE3: automatically select MDT for lf...
• is related to: LU-10767 Potential buffer overflow in lfs_setd...
• is related to: LU-9435 DNE2 - object placement QoS policy

Comments

[Andreas Dilger]

It would also be good to do this with "lfs mkdir -i -1", and pick the less-full MDTs with "lfs mkdir -c N".

[Gerrit Updater]

Lai Siyao ([e-mail]) uploaded a new patch: https://review.whamcloud.com/30598
Subject: LU-10277 utils: 'lfs mkdir' choose the less full MDT
Project: fs/lustre-release
Branch: master
Current Patch Set: 1
Commit: 85b0f7f2ec77f84d1f5d343e3c3c5fe171a19ad7

[Gerrit Updater]

Oleg Drokin ([e-mail]) merged in patch https://review.whamcloud.com/30598/
Subject: LU-10277 utils: 'lfs mkdir -i -1' pick the less full MDTs
Project: fs/lustre-release
Branch: master
Current Patch Set:
Commit: 5c74455b50aa54a0081f1aa86712972857fb8b6a

[Peter Jones]

Landed for 2.11