== sanity test 60c: unlink file when mds full ============ 14:12:50 (1789323170)
create 5000 files
 - open/close 1912 (time 1789323182.55 total 10.00 last 191.14)
 - open/close 3963 (time 1789323192.56 total 20.01 last 205.03)
total: 5000 open/close in 24.22 seconds: 206.42 ops/second
fail_loc=0x80000137
 - unlinked 0 (time 1789323198 ; total 0 ; last 0)
total: 5000 unlinks in 14 seconds: 357.142853 unlinks/second
fail_loc=0