== sanity test 60c: unlink file when mds full ============ 17:10:14 (1788642614)
create 5000 files
 - open/close 464 (time 1788642629.31 total 10.01 last 46.37)
 - open/close 928 (time 1788642639.34 total 20.03 last 46.29)
 - open/close 1342 (time 1788642649.35 total 30.05 last 41.33)
 - open/close 1730 (time 1788642659.40 total 40.09 last 38.63)
 - open/close 2128 (time 1788642669.42 total 50.12 last 39.70)
 - open/close 2548 (time 1788642679.43 total 60.13 last 41.96)
 - open/close 2964 (time 1788642689.45 total 70.14 last 41.54)
 - open/close 3399 (time 1788642699.47 total 80.16 last 43.39)
 - open/close 3828 (time 1788642709.48 total 90.17 last 42.88)
 - open/close 4248 (time 1788642719.49 total 100.18 last 41.94)
 - open/close 4666 (time 1788642729.52 total 110.22 last 41.67)
total: 5000 open/close in 117.59 seconds: 42.52 ops/second
fail_loc=0x80000137
 - unlinked 0 (time 1788642741 ; total 0 ; last 0)
total: 5000 unlinks in 82 seconds: 60.975609 unlinks/second
fail_loc=0