== sanity test 60c: unlink file when mds full ============ 08:51:50 (1788612710)
create 5000 files
 - open/close 405 (time 1788612725.78 total 10.02 last 40.41)
 - open/close 852 (time 1788612735.81 total 20.04 last 44.60)
 - open/close 1294 (time 1788612745.81 total 30.05 last 44.18)
 - open/close 1772 (time 1788612755.81 total 40.05 last 47.80)
 - open/close 2233 (time 1788612765.81 total 50.05 last 46.09)
 - open/close 2693 (time 1788612775.82 total 60.06 last 45.98)
 - open/close 3157 (time 1788612785.88 total 70.11 last 46.13)
 - open/close 3586 (time 1788612795.90 total 80.14 last 42.81)
 - open/close 3978 (time 1788612805.91 total 90.15 last 39.13)
 - open/close 4398 (time 1788612815.93 total 100.17 last 41.92)
 - open/close 4832 (time 1788612825.95 total 110.18 last 43.34)
total: 5000 open/close in 114.28 seconds: 43.75 ops/second
fail_loc=0x80000137
 - unlinked 0 (time 1788612834 ; total 0 ; last 0)
total: 5000 unlinks in 81 seconds: 61.728394 unlinks/second
fail_loc=0