== sanity test 60c: unlink file when mds full ============ 19:07:24 (1781219244)
create 5000 files
 - open/close 303 (time 1781219259.78 total 10.02 last 30.24)
 - open/close 714 (time 1781219269.79 total 20.03 last 41.06)
 - open/close 1185 (time 1781219279.80 total 30.04 last 47.06)
 - open/close 1575 (time 1781219289.83 total 40.07 last 38.88)
 - open/close 2049 (time 1781219299.85 total 50.09 last 47.31)
 - open/close 2577 (time 1781219309.85 total 60.10 last 52.75)
 - open/close 2971 (time 1781219319.86 total 70.10 last 39.38)
 - open/close 3421 (time 1781219329.88 total 80.12 last 44.91)
 - open/close 3768 (time 1781219339.92 total 90.16 last 34.55)
 - open/close 4135 (time 1781219349.93 total 100.17 last 36.68)
 - open/close 4511 (time 1781219359.94 total 110.18 last 37.57)
 - open/close 4943 (time 1781219369.94 total 120.18 last 43.19)
total: 5000 open/close in 121.44 seconds: 41.17 ops/second
fail_loc=0x80000137
 - unlinked 0 (time 1781219377 ; total 0 ; last 0)
total: 5000 unlinks in 85 seconds: 58.823528 unlinks/second
fail_loc=0