== sanity test 60c: unlink file when mds full ============ 19:35:50 (1789601750)
create 5000 files
 - open/close 515 (time 1789601764.82 total 10.01 last 51.44)
 - open/close 1081 (time 1789601774.82 total 20.02 last 56.58)
 - open/close 1616 (time 1789601784.83 total 30.03 last 53.44)
 - open/close 2142 (time 1789601794.83 total 40.03 last 52.58)
 - open/close 2647 (time 1789601804.85 total 50.04 last 50.44)
 - open/close 3170 (time 1789601814.89 total 60.08 last 52.08)
 - open/close 3642 (time 1789601824.89 total 70.09 last 47.18)
 - open/close 4125 (time 1789601834.90 total 80.09 last 48.28)
 - open/close 4555 (time 1789601844.91 total 90.11 last 42.93)
total: 5000 open/close in 99.61 seconds: 50.20 ops/second
fail_loc=0x80000137
 - unlinked 0 (time 1789601859 ; total 0 ; last 0)
total: 5000 unlinks in 64 seconds: 78.125000 unlinks/second
fail_loc=0