== sanity test 60c: unlink file when mds full ============ 09:57:23 (1782223043)
create 5000 files
 - open/close 530 (time 1782223057.86 total 10.01 last 52.95)
 - open/close 988 (time 1782223067.88 total 20.02 last 45.73)
 - open/close 1466 (time 1782223077.88 total 30.03 last 47.80)
 - open/close 1969 (time 1782223087.89 total 40.03 last 50.25)
 - open/close 2440 (time 1782223097.91 total 50.06 last 46.96)
 - open/close 2890 (time 1782223107.92 total 60.07 last 44.99)
 - open/close 3365 (time 1782223117.93 total 70.07 last 47.46)
 - open/close 3803 (time 1782223127.94 total 80.09 last 43.74)
 - open/close 4268 (time 1782223137.96 total 90.10 last 46.43)
 - open/close 4689 (time 1782223147.98 total 100.13 last 42.00)
total: 5000 open/close in 107.66 seconds: 46.44 ops/second
fail_loc=0x80000137
 - unlinked 0 (time 1782223161 ; total 0 ; last 0)
total: 5000 unlinks in 79 seconds: 63.291138 unlinks/second
fail_loc=0