== sanity test 60c: unlink file when mds full ============ 17:13:08 (1788642788)
create 5000 files
 - open/close 518 (time 1788642803.09 total 10.01 last 51.75)
 - open/close 1061 (time 1788642813.09 total 20.02 last 54.26)
 - open/close 1591 (time 1788642823.10 total 30.03 last 52.96)
 - open/close 2134 (time 1788642833.11 total 40.04 last 54.24)
 - open/close 2640 (time 1788642843.12 total 50.04 last 50.57)
 - open/close 3166 (time 1788642853.12 total 60.04 last 52.60)
 - open/close 3645 (time 1788642863.13 total 70.05 last 47.87)
 - open/close 4066 (time 1788642873.14 total 80.06 last 42.05)
 - open/close 4549 (time 1788642883.16 total 90.08 last 48.20)
total: 5000 open/close in 99.86 seconds: 50.07 ops/second
fail_loc=0x80000137
 - unlinked 0 (time 1788642897 ; total 0 ; last 0)
total: 5000 unlinks in 70 seconds: 71.428574 unlinks/second
fail_loc=0