Recent failure in 2.12.2 testing:

https://testing.whamcloud.com/test_sets/81a8b6dc-fdf0-11e8-b837-52540065bddc
CMD: onyx-30vm4 lctl set_param fail_loc=0
fail_loc=0
unlink(/mnt/lustre/d62.replay-single/f62.replay-single-0) error: No such file or directory
total: 0 unlinks in 0 seconds: -nan unlinks/second
replay-single test_62: @@@@@@ FAIL: unlinkmany /mnt/lustre/d62.replay-single/f62.replay-single failed

Earlier hit, erroneously attached to LU-11762:

https://testing.whamcloud.com/test_sets/81a8b6dc-fdf0-11e8-b837-52540065bddc