== sanity test 60c: unlink file when mds full ============ 21:19:05 (1789175945)
create 5000 files
 - open/close 475 (time 1789175959.51 total 10.00 last 47.50)
 - open/close 926 (time 1789175969.51 total 20.00 last 45.08)
 - open/close 1399 (time 1789175979.52 total 30.01 last 47.26)
 - open/close 1838 (time 1789175989.53 total 40.03 last 43.83)
 - open/close 2256 (time 1789175999.54 total 50.03 last 41.78)
 - open/close 2647 (time 1789176009.57 total 60.07 last 38.97)
 - open/close 3084 (time 1789176019.65 total 70.14 last 43.37)
 - open/close 3490 (time 1789176029.66 total 80.15 last 40.57)
 - open/close 3887 (time 1789176039.68 total 90.17 last 39.63)
 - open/close 4333 (time 1789176049.68 total 100.18 last 44.57)
 - open/close 4725 (time 1789176059.69 total 110.19 last 39.15)
total: 5000 open/close in 117.81 seconds: 42.44 ops/second
fail_loc=0x80000137
 - unlinked 0 (time 1789176071 ; total 0 ; last 0)
total: 5000 unlinks in 79 seconds: 63.291138 unlinks/second
fail_loc=0