== sanity test 60c: unlink file when mds full ============ 07:41:30 (1789126890)
create 5000 files
 - open/close 508 (time 1789126904.75 total 10.01 last 50.73)
 - open/close 1068 (time 1789126914.80 total 20.06 last 55.73)
 - open/close 1572 (time 1789126924.81 total 30.07 last 50.35)
 - open/close 2173 (time 1789126934.83 total 40.08 last 60.02)
 - open/close 2718 (time 1789126944.84 total 50.10 last 54.44)
 - open/close 3239 (time 1789126954.85 total 60.11 last 52.02)
 - open/close 3787 (time 1789126964.86 total 70.12 last 54.77)
 - open/close 4256 (time 1789126974.87 total 80.13 last 46.83)
 - open/close 4791 (time 1789126984.88 total 90.14 last 53.48)
total: 5000 open/close in 94.99 seconds: 52.64 ops/second
fail_loc=0x80000137
 - unlinked 0 (time 1789126994 ; total 0 ; last 0)
total: 5000 unlinks in 65 seconds: 76.923080 unlinks/second
fail_loc=0