== sanity test 60c: unlink file when mds full ============ 20:11:23 (1790727083)
create 5000 files
 - open/close 501 (time 1790727097.54 total 10.03 last 49.95)
 - open/close 991 (time 1790727107.56 total 20.05 last 48.90)
 - open/close 1493 (time 1790727117.58 total 30.07 last 50.11)
 - open/close 1988 (time 1790727127.59 total 40.08 last 49.44)
 - open/close 2426 (time 1790727137.61 total 50.11 last 43.69)
 - open/close 2780 (time 1790727147.65 total 60.14 last 35.28)
 - open/close 3202 (time 1790727157.67 total 70.16 last 42.10)
 - open/close 3631 (time 1790727167.70 total 80.19 last 42.77)
 - open/close 4096 (time 1790727177.72 total 90.22 last 46.40)
 - open/close 4585 (time 1790727187.75 total 100.24 last 48.77)
total: 5000 open/close in 109.72 seconds: 45.57 ops/second
fail_loc=0x80000137
 - unlinked 0 (time 1790727202 ; total 0 ; last 0)
total: 5000 unlinks in 82 seconds: 60.975609 unlinks/second
fail_loc=0