== sanity test 60c: unlink file when mds full ============ 17:23:07 (1776201787)
create 5000 files
 - open/close 697 (time 1776201801.37 total 10.00 last 69.68)
 - open/close 1337 (time 1776201811.38 total 20.02 last 63.89)
 - open/close 1886 (time 1776201821.40 total 30.03 last 54.84)
 - open/close 2384 (time 1776201831.41 total 40.04 last 49.73)
 - open/close 2906 (time 1776201841.43 total 50.06 last 52.10)
 - open/close 3531 (time 1776201851.44 total 60.07 last 62.44)
 - open/close 4258 (time 1776201861.45 total 70.08 last 72.62)
 - open/close 4957 (time 1776201871.45 total 80.09 last 69.87)
total: 5000 open/close in 80.79 seconds: 61.89 ops/second
fail_loc=0x80000137
 - unlinked 0 (time 1776201876 ; total 0 ; last 0)
total: 5000 unlinks in 43 seconds: 116.279068 unlinks/second
fail_loc=0