== sanity test 60c: unlink file when mds full ============ 11:33:54 (1788449634)
create 5000 files
 - open/close 613 (time 1788449648.38 total 10.01 last 61.24)
 - open/close 1154 (time 1788449658.40 total 20.03 last 54.00)
 - open/close 1678 (time 1788449668.41 total 30.04 last 52.35)
 - open/close 2309 (time 1788449678.42 total 40.04 last 63.08)
 - open/close 2832 (time 1788449688.42 total 50.04 last 52.28)
 - open/close 3391 (time 1788449698.43 total 60.06 last 55.84)
 - open/close 3864 (time 1788449708.46 total 70.08 last 47.16)
 - open/close 4379 (time 1788449718.50 total 80.12 last 51.32)
 - open/close 4939 (time 1788449728.50 total 90.13 last 55.96)
total: 5000 open/close in 91.09 seconds: 54.89 ops/second
fail_loc=0x80000137
 - unlinked 0 (time 1788449733 ; total 0 ; last 0)
total: 5000 unlinks in 59 seconds: 84.745766 unlinks/second
fail_loc=0