== sanity test 60c: unlink file when mds full ============ 16:35:07 (1781210107)
create 5000 files
 - open/close 810 (time 1781210119.91 total 10.01 last 80.91)
 - open/close 1716 (time 1781210129.92 total 20.02 last 90.53)
 - open/close 2595 (time 1781210139.92 total 30.02 last 87.88)
 - open/close 3502 (time 1781210149.93 total 40.03 last 90.65)
 - open/close 4352 (time 1781210159.93 total 50.03 last 84.98)
total: 5000 open/close in 58.24 seconds: 85.85 ops/second
fail_loc=0x80000137
 - unlinked 0 (time 1781210170 ; total 0 ; last 0)
total: 5000 unlinks in 41 seconds: 121.951218 unlinks/second
fail_loc=0