[LU-6116] file system can not be umounted after racer.

• Type: Bug
• Resolution: Not a Bug
• Priority: Minor
• Affects Version/s: Lustre 2.7.0
• Severity: 3
• Assignee: WC Triage
• Reporter: Di Wang

Description

I tried to run racer with single MDT, and the system can not be umounted after racer.

[root@testnode tests]# MDSCOUNT=4 sh llmountcleanup.sh 
Stopping clients: testnode /mnt/lustre (opts:-f)
Stopping client testnode /mnt/lustre opts:-f
/mnt/lustre is still busy, wait one second
/mnt/lustre is still busy, wait one second
/mnt/lustre is still busy, wait one second
/mnt/lustre is still busy, wait one second
/mnt/lustre is still busy, wait one second
/mnt/lustre is still busy, wait one second
/mnt/lustre is still busy, wait one second
/mnt/lustre is still busy, wait one second
/mnt/lustre is still busy, wait one second
/mnt/lustre is still busy, wait one second
/mnt/lustre is still busy, wait one second
/mnt/lustre is still busy, wait one second
/mnt/lustre is still busy, wait one second
/mnt/lustre is still busy, wait one second
/mnt/lustre is still busy, wait one second
/mnt/lustre is still busy, wait one second
/mnt/lustre is still busy, wait one second
/mnt/lustre is still busy, wait one second
/mnt/lustre is still busy, wait one second
/mnt/lustre is still busy, wait one second
/mnt/lustre is still busy, wait one second
/mnt/lustre is still busy, wait one second