[LU-10826] Regression in LU-9372 on OPA enviroment and no recovery triggered

• Type: Bug
• Resolution: Fixed
• Priority: Minor
• Fix Version/s: Lustre 2.12.0
• Environment: master, centos7.4 ; 1 x MDS/MDT, 1 x OSS/OST and 1 client with OPA-10.6
• Severity: 3
• Assignee: Bruno Faccini (Inactive)
• Reporter: Shuichi Ihara (Inactive)

Description

Looks like LU-9372 has regression on OPA enviroment and somehow when test_req_buffer_pressure is enabled (test_req_buffer_pressure=1) on OSS or MDS, client never reconnect and no trigger Lustre recovery.

[root@es14k-vm1 ~]# umount -t lustre -a
[root@es14k-vm1 ~]# lustre_rmmod 
[root@es14k-vm1 ~]# vi /etc/modprobe.d/lustre.conf

options ptlrpc test_req_buffer_pressure=1

[root@es14k-vm1 ~]# mount -t lustre /dev/ddn/scratch0_ost0000 /lustre/scratch0/ost0000

[root@es14k-vm1 ~]# cat /proc/fs/lustre/obdfilter/scratch0-OST0000/recovery_status 
status: WAITING_FOR_CLIENTS

Never client Reconnected and no lustre recovery triggered

Issue Links

• is related to: LU-9372 OOM happens on OSS during Lustre recovery for more than 5000 clients
• is related to: LU-10993 Fix for LU-10826 is problematic and skips recvoery