[LU-17199] 'lfs setstripe -C -1' can be set beyond overstripe count > 2000

• Status: Resolved
• Project: Lustre
• Affects Version/s: Lustre 2.16.0
• Type: Bug
• Priority: Minor
• Reporter: Shuichi Ihara
• Assignee: Sergey Cheremencev
• Resolution: Duplicate
• Severity: 3

Description

[root@ec01 ~]# lfs setstripe -C 2000 /lustre/out
[root@ec01 ~]# lfs setstripe -C 2001 /lustre/out
lfs setstripe setstripe: invalid stripe count '2001'
To create a file with specified striping/composite layout, or
create/replace the default layout on an existing directory:

'lfs setstripe -C 2000' works, but '-C 2001' doesn't work. that's expected.

However, 'lfs setstripe -C -1' can be set beyond overstripe count 2000.

[root@ec01 ~]# lfs setstripe -C -1 /lustre/out
[root@ec01 ~]# lfs getstripe /lustre/out/a | grep 0x | wc -l
2727

Issue Links

• duplicates: LU-13748 'lfs setstripe -C -1' stripes too widely
• is related to: LU-16623 lod_statfs_and_check() does not skip ...

Comments

[Andreas Dilger]

This issue has already been fixed in master by limiting the "-C -1" stripe count to LOV_MAX_STRIPE_COUNT by patch https://review.whamcloud.com/50250 "LU-16623 lod: handle object allocation consistently" that landed as commit v2_15_56-1-gced540165e.

[Peter Jones]

Duplicate of LU-16623