== sanity test 60c: unlink file when mds full ============ 23:36:08 (1788665768)
create 5000 files
 - open/close 639 (time 1788665781.98 total 10.01 last 63.84)
 - open/close 1297 (time 1788665791.98 total 20.01 last 65.78)
 - open/close 1840 (time 1788665802.00 total 30.03 last 54.23)
 - open/close 2465 (time 1788665812.02 total 40.05 last 62.37)
 - open/close 3022 (time 1788665822.04 total 50.07 last 55.58)
 - open/close 3572 (time 1788665832.05 total 60.08 last 54.96)
 - open/close 4104 (time 1788665842.06 total 70.09 last 53.14)
 - open/close 4678 (time 1788665852.07 total 80.10 last 57.32)
total: 5000 open/close in 85.00 seconds: 58.83 ops/second
fail_loc=0x80000137
 - unlinked 0 (time 1788665861 ; total 0 ; last 0)
total: 5000 unlinks in 54 seconds: 92.592590 unlinks/second
fail_loc=0