== sanity test 60c: unlink file when mds full ============ 18:52:29 (1781218349)
create 5000 files
 - open/close 475 (time 1781218363.56 total 10.04 last 47.33)
 - open/close 919 (time 1781218373.58 total 20.06 last 44.30)
 - open/close 1414 (time 1781218383.60 total 30.07 last 49.43)
 - open/close 1891 (time 1781218393.60 total 40.08 last 47.69)
 - open/close 2330 (time 1781218403.60 total 50.08 last 43.90)
 - open/close 2783 (time 1781218413.61 total 60.08 last 45.27)
 - open/close 3254 (time 1781218423.61 total 70.09 last 47.08)
 - open/close 3709 (time 1781218433.61 total 80.09 last 45.48)
 - open/close 4208 (time 1781218443.63 total 90.11 last 49.83)
 - open/close 4678 (time 1781218453.65 total 100.13 last 46.90)
total: 5000 open/close in 106.69 seconds: 46.86 ops/second
fail_loc=0x80000137
 - unlinked 0 (time 1781218464 ; total 0 ; last 0)
total: 5000 unlinks in 71 seconds: 70.422539 unlinks/second
fail_loc=0