== sanity test 60c: unlink file when mds full ============ 22:00:10 (1789351210)
create 5000 files
 - open/close 1686 (time 1789351222.13 total 10.00 last 168.58)
 - open/close 3027 (time 1789351232.14 total 20.01 last 134.01)
 - open/close 4355 (time 1789351242.14 total 30.01 last 132.76)
total: 5000 open/close in 34.85 seconds: 143.48 ops/second
fail_loc=0x80000137
 - unlinked 0 (time 1789351248 ; total 0 ; last 0)
total: 5000 unlinks in 29 seconds: 172.413788 unlinks/second
fail_loc=0