== sanity test 60c: unlink file when mds full ============ 11:50:59 (1787759459)
create 5000 files
 - open/close 438 (time 1787759473.95 total 10.02 last 43.73)
 - open/close 819 (time 1787759483.96 total 20.02 last 38.08)
 - open/close 1297 (time 1787759493.96 total 30.03 last 47.77)
 - open/close 1852 (time 1787759503.97 total 40.03 last 55.47)
 - open/close 2256 (time 1787759513.98 total 50.05 last 40.34)
 - open/close 2629 (time 1787759523.99 total 60.05 last 37.29)
 - open/close 3035 (time 1787759534.01 total 70.07 last 40.53)
 - open/close 3497 (time 1787759544.01 total 80.08 last 46.16)
 - open/close 4043 (time 1787759554.03 total 90.10 last 54.49)
 - open/close 4540 (time 1787759564.05 total 100.11 last 49.65)
total: 5000 open/close in 109.23 seconds: 45.78 ops/second
fail_loc=0x80000137
 - unlinked 0 (time 1787759578 ; total 0 ; last 0)
total: 5000 unlinks in 71 seconds: 70.422539 unlinks/second
fail_loc=0