== sanity test 60c: unlink file when mds full ============ 18:17:31 (1784413051)
create 5000 files
 - open/close 1875 (time 1784413062.72 total 10.01 last 187.36)
 - open/close 3366 (time 1784413072.72 total 20.01 last 149.06)
 - open/close 4695 (time 1784413082.72 total 30.01 last 132.85)
total: 5000 open/close in 32.22 seconds: 155.20 ops/second
fail_loc=0x80000137
 - unlinked 0 (time 1784413086 ; total 0 ; last 0)
total: 5000 unlinks in 31 seconds: 161.290329 unlinks/second
fail_loc=0