== sanity test 60c: unlink file when mds full ============ 08:40:10 (1788525610)
create 5000 files
 - open/close 509 (time 1788525624.47 total 10.00 last 50.89)
 - open/close 990 (time 1788525634.48 total 20.01 last 48.06)
 - open/close 1501 (time 1788525644.52 total 30.05 last 50.92)
 - open/close 2075 (time 1788525654.52 total 40.05 last 57.36)
 - open/close 2648 (time 1788525664.53 total 50.06 last 57.23)
 - open/close 3246 (time 1788525674.54 total 60.07 last 59.75)
 - open/close 3822 (time 1788525684.55 total 70.08 last 57.58)
 - open/close 4400 (time 1788525694.55 total 80.08 last 57.79)
 - open/close 4951 (time 1788525704.56 total 90.09 last 55.06)
total: 5000 open/close in 91.40 seconds: 54.71 ops/second
fail_loc=0x80000137
 - unlinked 0 (time 1788525710 ; total 0 ; last 0)
total: 5000 unlinks in 72 seconds: 69.444443 unlinks/second
fail_loc=0