== sanity test 60c: unlink file when mds full ============ 12:20:14 (1774887614)
create 5000 files
 - open/close 558 (time 1774887626.99 total 10.01 last 55.73)
 - open/close 1149 (time 1774887637.01 total 20.03 last 59.01)
 - open/close 1713 (time 1774887647.02 total 30.04 last 56.32)
 - open/close 2264 (time 1774887657.03 total 40.05 last 55.08)
 - open/close 2813 (time 1774887667.04 total 50.06 last 54.82)
 - open/close 3346 (time 1774887677.06 total 60.08 last 53.21)
 - open/close 3870 (time 1774887687.06 total 70.08 last 52.36)
 - open/close 4351 (time 1774887697.09 total 80.11 last 47.99)
 - open/close 4882 (time 1774887707.09 total 90.11 last 53.09)
total: 5000 open/close in 92.38 seconds: 54.13 ops/second
fail_loc=0x80000137
 - unlinked 0 (time 1774887712 ; total 0 ; last 0)
total: 5000 unlinks in 59 seconds: 84.745766 unlinks/second
fail_loc=0