[LU-8264] lfs setstripe without -p pool_name doesn't inherit pool from parent/ROOT directory

Duplicate — Tue, 19 Mar 2019 16:36:42 +0000

Actually exactly sure of if this is bug, as a doubt filing this bug. Please adviced. Here is use case or more details about it.

Say I have 4 osts on my setup and created pool with 2 osts assign to it

lctl pool_new lustre.pool ;
lctl pool_add lustre.pool lustre-OST0000 lustre-OST0001 ; 
mkdir /mnt/lustre/test_pool
lfs setstripe -c -1 -p lustre.pool /mnt/lustre/test_pool

Now I can create file in that by following two ways

 case1: lfs setstripe -c 3 -p lustre.pool /mnt/lustre/test_pool/test1
 case2: lfs setstripe -c 3  /mnt/lustre/test_pool/test2

Here in case 1 we trim the strip count to 2 as pool has 2 osts
But in case 2 we allow stripe count 3
So question is case2 is expected behaviour or bug (as test_pool is assigned to pool) ?

Following text taken from admin guide.

Several lfs commands can be run with OST pools. Use the lfs setstripe command to associate a directory with an OST pool. This causes all new regular files and directories in the directory to be created in the pool. The lfs command can be used to list pools in a file system and OSTs in a named pool.

Whamcloud Community JIRA

[LU-8264] lfs setstripe without -p pool_name doesn't inherit pool from parent/ROOT directory