== sanity test 60c: unlink file when mds full ============ 07:55:40 (1788522940)
create 5000 files
 - open/close 486 (time 1788522954.06 total 10.01 last 48.55)
 - open/close 993 (time 1788522964.06 total 20.02 last 50.68)
 - open/close 1468 (time 1788522974.07 total 30.02 last 47.47)
 - open/close 2048 (time 1788522984.07 total 40.02 last 57.98)
 - open/close 2636 (time 1788522994.08 total 50.03 last 58.78)
 - open/close 3063 (time 1788523004.09 total 60.04 last 42.63)
 - open/close 3462 (time 1788523014.10 total 70.05 last 39.86)
 - open/close 3974 (time 1788523024.10 total 80.06 last 51.19)
 - open/close 4482 (time 1788523034.12 total 90.07 last 50.74)
total: 5000 open/close in 99.19 seconds: 50.41 ops/second
fail_loc=0x80000137
 - unlinked 0 (time 1788523047 ; total 0 ; last 0)
total: 5000 unlinks in 66 seconds: 75.757576 unlinks/second
fail_loc=0