== sanity test 60c: unlink file when mds full ============ 15:13:40 (1789672420)
create 5000 files
 - open/close 488 (time 1789672436.02 total 10.03 last 48.65)
 - open/close 862 (time 1789672446.08 total 20.09 last 37.20)
 - open/close 1302 (time 1789672456.08 total 30.09 last 43.98)
 - open/close 1809 (time 1789672466.09 total 40.10 last 50.68)
 - open/close 2225 (time 1789672476.10 total 50.10 last 41.56)
 - open/close 2675 (time 1789672486.11 total 60.12 last 44.93)
 - open/close 3148 (time 1789672496.12 total 70.13 last 47.25)
 - open/close 3617 (time 1789672506.14 total 80.15 last 46.82)
 - open/close 4107 (time 1789672516.14 total 90.15 last 48.97)
 - open/close 4575 (time 1789672526.16 total 100.17 last 46.72)
total: 5000 open/close in 107.63 seconds: 46.45 ops/second
fail_loc=0x80000137
 - unlinked 0 (time 1789672538 ; total 1 ; last 1)
total: 5000 unlinks in 63 seconds: 79.365082 unlinks/second
fail_loc=0