== sanity test 60c: unlink file when mds full ============ 19:18:16 (1788650296)
create 5000 files
 - open/close 608 (time 1788650312.20 total 10.04 last 60.57)
 - open/close 1188 (time 1788650322.21 total 20.05 last 57.91)
 - open/close 1817 (time 1788650332.24 total 30.07 last 62.77)
 - open/close 2417 (time 1788650342.24 total 40.07 last 60.00)
 - open/close 3028 (time 1788650352.24 total 50.08 last 61.07)
 - open/close 3641 (time 1788650362.25 total 60.09 last 61.23)
 - open/close 4188 (time 1788650372.26 total 70.10 last 54.65)
 - open/close 4740 (time 1788650382.28 total 80.12 last 55.08)
total: 5000 open/close in 85.56 seconds: 58.44 ops/second
fail_loc=0x80000137
 - unlinked 0 (time 1788650391 ; total 0 ; last 0)
total: 5000 unlinks in 59 seconds: 84.745766 unlinks/second
fail_loc=0