== sanity test 60c: unlink file when mds full ============ 18:08:45 (1789078125)
create 5000 files
 - open/close 358 (time 1789078143.04 total 10.01 last 35.78)
 - open/close 696 (time 1789078153.04 total 20.01 last 33.79)
 - open/close 1145 (time 1789078163.05 total 30.02 last 44.83)
 - open/close 1722 (time 1789078173.07 total 40.03 last 57.64)
 - open/close 2210 (time 1789078183.10 total 50.07 last 48.61)
 - open/close 2717 (time 1789078193.13 total 60.10 last 50.57)
 - open/close 3260 (time 1789078203.14 total 70.11 last 54.25)
 - open/close 3766 (time 1789078213.15 total 80.12 last 50.53)
 - open/close 4279 (time 1789078223.15 total 90.12 last 51.29)
 - open/close 4827 (time 1789078233.16 total 100.13 last 54.77)
total: 5000 open/close in 103.77 seconds: 48.19 ops/second
fail_loc=0x80000137
 - unlinked 0 (time 1789078242 ; total 0 ; last 0)
total: 5000 unlinks in 68 seconds: 73.529411 unlinks/second
fail_loc=0