== sanity test 60c: unlink file when mds full ============ 18:16:39 (1789683399)
create 5000 files
 - open/close 522 (time 1789683413.58 total 10.02 last 52.08)
 - open/close 1044 (time 1789683423.59 total 20.04 last 52.12)
 - open/close 1665 (time 1789683433.60 total 30.04 last 62.09)
 - open/close 2203 (time 1789683443.62 total 40.06 last 53.69)
 - open/close 2731 (time 1789683453.62 total 50.06 last 52.80)
 - open/close 3255 (time 1789683463.62 total 60.06 last 52.39)
 - open/close 3752 (time 1789683473.65 total 70.09 last 49.56)
 - open/close 4301 (time 1789683483.67 total 80.11 last 54.78)
 - open/close 4774 (time 1789683493.67 total 90.12 last 47.28)
total: 5000 open/close in 94.76 seconds: 52.76 ops/second
fail_loc=0x80000137
 - unlinked 0 (time 1789683503 ; total 0 ; last 0)
total: 5000 unlinks in 67 seconds: 74.626869 unlinks/second
fail_loc=0