[LU-14755] t-f is to be enhanced to create required number of pools on fs

• Type: Improvement
• Resolution: Fixed
• Priority: Minor
• Fix Version/s: Lustre 2.15.0
• Affects Version/s: Lustre 2.14.0

Epic/Theme

patch

• Assignee: Elena Gryaznova
• Reporter: Elena Gryaznova

Description

We are interested in running some tests on fs with the pools. The proposed enhancement allows to create $FS_NPOOLS number of pools containing $FS_POOL_NOSTS number of osts. If $FS_NPOOLS not set the number of pools created is $OSTCOUNT / $FS_POOL_NOSTS. Pools names are $FS_POOL based. Pools are not created if FS_POOL not set.
Examples 1:
FS_POOL=global OSTCOUNT=2
lustre.global0
OST lustre-OST0000_UUID
OST lustre-OST0001_UUID
Example 2:
FS_POOL=global OSTCOUNT=6 FS_POOL_NOSTS=3
lustre.global0
OST lustre-OST0000_UUID
OST lustre-OST0001_UUID
OST lustre-OST0002_UUID
lustre.global1
OST lustre-OST0003_UUID
OST lustre-OST0004_UUID
OST lustre-OST0005_UUID
Example 3:
FS_POOL=p OSTCOUNT=5 KEEP_POOLS=true FS_NPOOLS=7 FS_POOL_NOSTS=3
Pool: lustre.p0
lustre-OST0000_UUID
lustre-OST0001_UUID
lustre-OST0002_UUID
Pool: lustre.p1
lustre-OST0003_UUID
lustre-OST0004_UUID
lustre-OST0000_UUID
Pool: lustre.p2
lustre-OST0001_UUID
lustre-OST0002_UUID
lustre-OST0003_UUID
Pool: lustre.p3
lustre-OST0004_UUID
lustre-OST0000_UUID
lustre-OST0001_UUID
Pool: lustre.p4
lustre-OST0002_UUID
lustre-OST0003_UUID
lustre-OST0004_UUID
Pool: lustre.p5
lustre-OST0000_UUID
lustre-OST0001_UUID
lustre-OST0002_UUID
Pool: lustre.p6
lustre-OST0003_UUID
lustre-OST0004_UUID
lustre-OST0000_UUID

Patch adds the ability to remove all old pools at the start if DELETE_OLD_POOLS set to true (default is false) and the ability keep the new pools not deleted at the end if KEEP_POOLS set to true (default is false).

Comments

[Peter Jones]

Landed for 2.15

[Gerrit Updater]

Oleg Drokin ([e-mail]) merged in patch https://review.whamcloud.com/43966/
Subject: LU-14755 tests: create custom pools
Project: fs/lustre-release
Branch: master
Current Patch Set:
Commit: cdebe1d8d356f72134a58dd0718298c9ba1b3d45

[Gerrit Updater]

Elena Gryaznova ([e-mail]) uploaded a new patch: https://review.whamcloud.com/43966
Subject: LU-14755 tests: create custom pools
Project: fs/lustre-release
Branch: master
Current Patch Set: 1
Commit: 6ade9164fc5c791f075d5a48ce7a70af00f5fdde