== sanity test 60c: unlink file when mds full ============ 10:47:30 (1782485250)
create 5000 files
 - open/close 565 (time 1782485264.19 total 10.02 last 56.40)
 - open/close 1140 (time 1782485274.22 total 20.05 last 57.33)
 - open/close 1730 (time 1782485284.22 total 30.05 last 58.95)
 - open/close 2328 (time 1782485294.23 total 40.06 last 59.74)
 - open/close 2874 (time 1782485304.24 total 50.07 last 54.58)
 - open/close 3460 (time 1782485314.25 total 60.08 last 58.56)
 - open/close 3995 (time 1782485324.25 total 70.09 last 53.45)
 - open/close 4495 (time 1782485334.26 total 80.09 last 49.97)
 - open/close 4995 (time 1782485344.27 total 90.10 last 49.96)
total: 5000 open/close in 90.18 seconds: 55.45 ops/second
fail_loc=0x80000137
 - unlinked 0 (time 1782485348 ; total 0 ; last 0)
total: 5000 unlinks in 59 seconds: 84.745766 unlinks/second
fail_loc=0