== sanity test 60c: unlink file when mds full ============ 18:30:13 (1781217013)
create 5000 files
 - open/close 545 (time 1781217027.87 total 10.03 last 54.33)
 - open/close 1076 (time 1781217037.88 total 20.04 last 53.07)
 - open/close 1580 (time 1781217047.88 total 30.04 last 50.40)
 - open/close 2085 (time 1781217057.89 total 40.05 last 50.41)
 - open/close 2636 (time 1781217067.90 total 50.06 last 55.07)
 - open/close 3145 (time 1781217077.90 total 60.07 last 50.87)
 - open/close 3642 (time 1781217087.91 total 70.08 last 49.65)
 - open/close 4086 (time 1781217097.92 total 80.08 last 44.39)
 - open/close 4586 (time 1781217107.93 total 90.09 last 49.93)
total: 5000 open/close in 99.35 seconds: 50.33 ops/second
fail_loc=0x80000137
 - unlinked 0 (time 1781217121 ; total 0 ; last 0)
total: 5000 unlinks in 71 seconds: 70.422539 unlinks/second
fail_loc=0