== sanity test 60c: unlink file when mds full ============ 10:55:12 (1776869712)
create 5000 files
 - open/close 1753 (time 1776869724.02 total 10.00 last 175.25)
 - open/close 3486 (time 1776869734.02 total 20.01 last 173.23)
 - open/close 4966 (time 1776869744.02 total 30.01 last 147.96)
total: 5000 open/close in 30.24 seconds: 165.34 ops/second
fail_loc=0x80000137
 - unlinked 0 (time 1776869745 ; total 0 ; last 0)
total: 5000 unlinks in 17 seconds: 294.117645 unlinks/second
fail_loc=0