== sanity test 60c: unlink file when mds full ============ 22:18:39 (1789265919)
create 5000 files
 - open/close 489 (time 1789265934.37 total 10.02 last 48.78)
 - open/close 938 (time 1789265944.38 total 20.03 last 44.87)
 - open/close 1425 (time 1789265954.39 total 30.04 last 48.65)
 - open/close 1959 (time 1789265964.40 total 40.06 last 53.33)
 - open/close 2428 (time 1789265974.45 total 50.11 last 46.67)
 - open/close 2885 (time 1789265984.46 total 60.11 last 45.68)
 - open/close 3373 (time 1789265994.46 total 70.11 last 48.80)
 - open/close 3790 (time 1789266004.46 total 80.11 last 41.69)
 - open/close 4205 (time 1789266014.52 total 90.17 last 41.27)
 - open/close 4640 (time 1789266024.53 total 100.18 last 43.44)
total: 5000 open/close in 109.62 seconds: 45.61 ops/second
fail_loc=0x80000137
 - unlinked 0 (time 1789266039 ; total 0 ; last 0)
total: 5000 unlinks in 78 seconds: 64.102562 unlinks/second
fail_loc=0