[LU-9893] replay-single test_70c: test failed to respond and timed out

• Type: Bug
• Resolution: Unresolved
• Priority: Minor
• Affects Version/s: Lustre 2.10.1, Lustre 2.11.0
• Environment: Trevis2, failover; server: RHEL 7.3, ldiskfs, branch master, v2.10.51, b3620; client: RHEL 7.3, branch master, v2.10.51, b3620
• Severity: 3
• Assignee: WC Triage
• Reporter: James Casper

Description

https://testing.hpdd.intel.com/test_sessions/9b7c7e8e-7b5a-4f4d-af09-400c586a8340

Looks like another mds hang on umount issue for this build. It may be related to these tickets:

LU-9791 (parallel-scale-nfsv3 & v4)
LU-9856 (racer)
LU-9469 (conf-sanity)

However, this one does not show this message in the MDS console log:

BUG: unable to handle kernel NULL pointer dereference at (null)

What this shares in common with the above three is they all have an mds umount at the end of the suite_log. No further activity is seen.

From suite_log:

test_70c fail mds1 1 times
Failing mds1 on trevis-41vm3
CMD: trevis-41vm3 grep -c /mnt/lustre-mds1' ' /proc/mounts
Stopping /mnt/lustre-mds1 (opts:) on trevis-41vm3
CMD: trevis-41vm3 umount -d /mnt/lustre-mds1  (end of log)