== sanity test 60c: unlink file when mds full ============ 23:10:34 (1782529834)
create 5000 files
 - open/close 633 (time 1782529849.33 total 10.04 last 63.05)
 - open/close 1297 (time 1782529859.33 total 20.04 last 66.39)
 - open/close 1900 (time 1782529869.37 total 30.08 last 60.07)
 - open/close 2509 (time 1782529879.37 total 40.08 last 60.88)
 - open/close 3188 (time 1782529889.38 total 50.09 last 67.84)
 - open/close 3759 (time 1782529899.41 total 60.12 last 56.95)
 - open/close 4306 (time 1782529909.41 total 70.13 last 54.66)
 - open/close 4872 (time 1782529919.42 total 80.13 last 56.56)
total: 5000 open/close in 82.65 seconds: 60.50 ops/second
fail_loc=0x80000137
 - unlinked 0 (time 1782529926 ; total 1 ; last 1)
total: 5000 unlinks in 59 seconds: 84.745766 unlinks/second
fail_loc=0