== sanity test 60c: unlink file when mds full ============ 11:57:23 (1788796643)
create 5000 files
 - open/close 616 (time 1788796657.88 total 10.01 last 61.54)
 - open/close 1228 (time 1788796667.89 total 20.02 last 61.15)
 - open/close 1837 (time 1788796677.91 total 30.04 last 60.77)
 - open/close 2347 (time 1788796687.91 total 40.04 last 51.00)
 - open/close 2782 (time 1788796697.92 total 50.05 last 43.46)
 - open/close 3294 (time 1788796707.92 total 60.05 last 51.19)
 - open/close 3783 (time 1788796717.93 total 70.06 last 48.87)
 - open/close 4320 (time 1788796727.93 total 80.06 last 53.69)
 - open/close 4812 (time 1788796737.94 total 90.07 last 49.13)
total: 5000 open/close in 94.05 seconds: 53.16 ops/second
fail_loc=0x80000137
 - unlinked 0 (time 1788796746 ; total 0 ; last 0)
total: 5000 unlinks in 62 seconds: 80.645164 unlinks/second
fail_loc=0