== sanity test 60c: unlink file when mds full ============ 17:11:05 (1776201065)
create 5000 files
 - open/close 783 (time 1776201078.91 total 10.00 last 78.28)
 - open/close 1500 (time 1776201088.92 total 20.01 last 71.68)
 - open/close 2199 (time 1776201098.93 total 30.02 last 69.83)
 - open/close 2961 (time 1776201108.94 total 40.02 last 76.14)
 - open/close 3645 (time 1776201118.95 total 50.03 last 68.33)
 - open/close 4387 (time 1776201128.95 total 60.04 last 74.18)
total: 5000 open/close in 68.86 seconds: 72.61 ops/second
fail_loc=0x80000137
 - unlinked 0 (time 1776201141 ; total 0 ; last 0)
total: 5000 unlinks in 42 seconds: 119.047623 unlinks/second
fail_loc=0