== sanity test 60c: unlink file when mds full ============ 23:13:35 (1787109215)
create 5000 files
 - open/close 544 (time 1787109229.25 total 10.01 last 54.32)
 - open/close 1039 (time 1787109239.27 total 20.03 last 49.43)
 - open/close 1594 (time 1787109249.27 total 30.03 last 55.49)
 - open/close 2083 (time 1787109259.28 total 40.04 last 48.84)
 - open/close 2615 (time 1787109269.29 total 50.05 last 53.14)
 - open/close 3102 (time 1787109279.33 total 60.09 last 48.53)
 - open/close 3558 (time 1787109289.33 total 70.09 last 45.59)
 - open/close 4033 (time 1787109299.34 total 80.10 last 47.45)
 - open/close 4510 (time 1787109309.35 total 90.11 last 47.67)
total: 5000 open/close in 100.02 seconds: 49.99 ops/second
fail_loc=0x80000137
 - unlinked 0 (time 1787109324 ; total 0 ; last 0)
total: 5000 unlinks in 82 seconds: 60.975609 unlinks/second
fail_loc=0