== sanity test 60c: unlink file when mds full ============ 05:20:20 (1777022420)
create 5000 files
 - open/close 475 (time 1777022434.44 total 10.01 last 47.45)
 - open/close 864 (time 1777022444.46 total 20.03 last 38.84)
 - open/close 1300 (time 1777022454.47 total 30.04 last 43.54)
 - open/close 1778 (time 1777022464.49 total 40.05 last 47.74)
 - open/close 2302 (time 1777022474.50 total 50.06 last 52.36)
 - open/close 2824 (time 1777022484.53 total 60.09 last 52.04)
 - open/close 3330 (time 1777022494.55 total 70.11 last 50.49)
 - open/close 3822 (time 1777022504.56 total 80.13 last 49.15)
 - open/close 4353 (time 1777022514.57 total 90.13 last 53.05)
 - open/close 4818 (time 1777022524.57 total 100.14 last 46.49)
total: 5000 open/close in 104.02 seconds: 48.07 ops/second
fail_loc=0x80000137
 - unlinked 0 (time 1777022532 ; total 0 ; last 0)
total: 5000 unlinks in 84 seconds: 59.523811 unlinks/second
fail_loc=0