[LU-15553] replay-vbr test 12a fails with 'test_12a failed with 4'

• Type: Bug
• Resolution: Unresolved
• Priority: Minor
• Affects Version/s: Lustre 2.16.0, Lustre 2.15.0, Lustre 2.15.4, Lustre 2.15.5, Lustre 2.15.6
• Labels: zfs
• Severity: 3
• Assignee: Lai Siyao
• Reporter: James Nunez (Inactive)

Description

replay-vbr test_12a started failing with 'test_12a failed with 4' on August 4, 2021 for Lustre 2.14.53.7 with logs at https://testing.whamcloud.com/test_sets/17efe0ba-7e4a-4e7f-b7f5-02383e1314c5. We’ve seen this test fail for ZFS and ldiskfs, but, so far, always DNE.

Looking at a recent failure at https://testing.whamcloud.com/test_sets/014ce4c3-c654-47f9-9333-1c58ebf545c3, the suite_log shows

CMD: onyx-24vm7 e2label /dev/mapper/mds1_flakey 2>/dev/null
Started lustre-MDT0000
CMD: onyx-55vm7.onyx.whamcloud.com unlinkmany /mnt/lustre/f12a.replay-vbr- 25
 - unlinked 0 (time 1643080125 ; total 0 ; last 0)
total: 25 unlinks in 0 seconds: inf unlinks/second
CMD: onyx-55vm7.onyx.whamcloud.com unlinkmany /mnt/lustre/f12a.replay-vbr-3- 25
 - unlinked 0 (time 1643080125 ; total 0 ; last 0)
total: 25 unlinks in 0 seconds: inf unlinks/second
CMD: onyx-55vm7.onyx.whamcloud.com checkstat -v /mnt/lustre/d12a.replay-vbr/f12a.replay-vbr
 replay-vbr test_12a: @@@@@@ FAIL: test_12a failed with 4 
  Trace dump:
  = /usr/lib64/lustre/tests/test-framework.sh:6391:error()
  = /usr/lib64/lustre/tests/test-framework.sh:6695:run_one()

Looking at the code for this test,

1152     # All 50 files should have been replayed
1153     do_node $CLIENT1 unlinkmany $DIR/$tfile- 25 || return 2
1154     do_node $CLIENT1 unlinkmany $DIR/$tfile-3- 25 || return 3
1155     do_node $CLIENT1 $CHECKSTAT $DIR/$tdir/$tfile && return 4
1156 
1157     return 0
1158 }
1159 run_test 12a "lost data due to missed REMOTE client during replay"

The call to checkstat is what produces this error.

Issue Links

• is related to: LU-9096 sanity test_253: File creation failed after rm