[LU-13686] lctl pool_add returns error randomly

• Type: Bug
• Resolution: Fixed
• Priority: Minor
• Fix Version/s: Lustre 2.14.0
• Severity: 3
• Assignee: Sergey Cheremencev
• Reporter: Sergey Cheremencev

Description

lctl pool_add returns error code depending on order of OSTs, see example:

[root@dhcppc3 lustre-wc-rel]# lctl pool_add lustre.qpool1 OST0000
OST lustre-OST0000_UUID added to pool lustre.qpool1
[root@dhcppc3 lustre-wc-rel]# lctl pool_add lustre.qpool1 OST[0-1]
OST lustre-OST0000_UUID is already in pool lustre.qpool1
OST lustre-OST0001_UUID added to pool lustre.qpool1
[root@dhcppc3 lustre-wc-rel]# echo $?
0
[root@dhcppc3 lustre-wc-rel]# lctl pool_remove lustre.qpool1 OST[0-1]
OST lustre-OST0000_UUID removed from pool lustre.qpool1
OST lustre-OST0001_UUID removed from pool lustre.qpool1
[root@dhcppc3 lustre-wc-rel]# lctl pool_add lustre.qpool1 OST0001
OST lustre-OST0001_UUID added to pool lustre.qpool1
[root@dhcppc3 lustre-wc-rel]# lctl pool_add lustre.qpool1 OST[0-1]
OST lustre-OST0001_UUID is already in pool lustre.qpool1
OST lustre-OST0000_UUID added to pool lustre.qpool1
pool_add: File exists
[root@dhcppc3 lustre-wc-rel]# echo $?
17 

The problem is caused by jt_pool_cmd, that returns the latest result ignoring previous errors.