== sanity test 60c: unlink file when mds full ============ 15:27:00 (1788463620)
create 5000 files
 - open/close 486 (time 1788463634.39 total 10.00 last 48.58)
 - open/close 983 (time 1788463644.41 total 20.02 last 49.62)
 - open/close 1473 (time 1788463654.42 total 30.03 last 48.96)
 - open/close 1990 (time 1788463664.43 total 40.04 last 51.61)
 - open/close 2471 (time 1788463674.44 total 50.05 last 48.08)
 - open/close 2948 (time 1788463684.44 total 60.05 last 47.69)
 - open/close 3402 (time 1788463694.44 total 70.05 last 45.40)
 - open/close 3827 (time 1788463704.45 total 80.06 last 42.44)
 - open/close 4294 (time 1788463714.46 total 90.06 last 46.69)
 - open/close 4775 (time 1788463724.48 total 100.09 last 48.00)
total: 5000 open/close in 105.23 seconds: 47.51 ops/second
fail_loc=0x80000137
 - unlinked 0 (time 1788463734 ; total 0 ; last 0)
total: 5000 unlinks in 76 seconds: 65.789474 unlinks/second
fail_loc=0