== sanity test 60c: unlink file when mds full ============ 10:09:35 (1788271775)
create 5000 files
 - open/close 514 (time 1788271789.39 total 10.02 last 51.27)
 - open/close 997 (time 1788271799.40 total 20.03 last 48.25)
 - open/close 1522 (time 1788271809.41 total 30.04 last 52.45)
 - open/close 2061 (time 1788271819.42 total 40.06 last 53.83)
 - open/close 2618 (time 1788271829.43 total 50.07 last 55.64)
 - open/close 3130 (time 1788271839.45 total 60.08 last 51.13)
 - open/close 3654 (time 1788271849.45 total 70.09 last 52.35)
 - open/close 4144 (time 1788271859.47 total 80.11 last 48.93)
 - open/close 4667 (time 1788271869.49 total 90.13 last 52.20)
total: 5000 open/close in 97.00 seconds: 51.55 ops/second
fail_loc=0x80000137
 - unlinked 0 (time 1788271879 ; total 0 ; last 0)
total: 5000 unlinks in 66 seconds: 75.757576 unlinks/second
fail_loc=0