== sanity test 60c: unlink file when mds full ============ 15:25:39 (1788463539)
create 5000 files
 - open/close 564 (time 1788463553.55 total 10.00 last 56.39)
 - open/close 1107 (time 1788463563.55 total 20.01 last 54.26)
 - open/close 1658 (time 1788463573.58 total 30.03 last 54.96)
 - open/close 2212 (time 1788463583.59 total 40.04 last 55.35)
 - open/close 2702 (time 1788463593.60 total 50.05 last 48.96)
 - open/close 3166 (time 1788463603.62 total 60.07 last 46.30)
 - open/close 3548 (time 1788463613.63 total 70.09 last 38.15)
 - open/close 3974 (time 1788463623.66 total 80.11 last 42.48)
 - open/close 4445 (time 1788463633.67 total 90.13 last 47.04)
 - open/close 4935 (time 1788463643.68 total 100.13 last 48.98)
total: 5000 open/close in 101.65 seconds: 49.19 ops/second
fail_loc=0x80000137
 - unlinked 0 (time 1788463649 ; total 0 ; last 0)
total: 5000 unlinks in 66 seconds: 75.757576 unlinks/second
fail_loc=0