== sanity test 60c: unlink file when mds full ============ 12:15:05 (1781280905)
create 5000 files
 - open/close 583 (time 1781280920.01 total 10.02 last 58.21)
 - open/close 1143 (time 1781280930.02 total 20.03 last 55.94)
 - open/close 1777 (time 1781280940.04 total 30.04 last 63.29)
 - open/close 2467 (time 1781280950.04 total 40.05 last 68.99)
 - open/close 3107 (time 1781280960.05 total 50.05 last 63.98)
 - open/close 3713 (time 1781280970.05 total 60.06 last 60.55)
 - open/close 4364 (time 1781280980.07 total 70.07 last 65.03)
 - open/close 4937 (time 1781280990.09 total 80.09 last 57.17)
total: 5000 open/close in 81.17 seconds: 61.60 ops/second
fail_loc=0x80000137
 - unlinked 0 (time 1781280995 ; total 0 ; last 0)
total: 5000 unlinks in 46 seconds: 108.695656 unlinks/second
fail_loc=0