== sanity test 60c: unlink file when mds full ============ 14:17:19 (1775758639)
create 5000 files
 - open/close 558 (time 1775758654.30 total 10.03 last 55.64)
 - open/close 1111 (time 1775758664.31 total 20.03 last 55.27)
 - open/close 1701 (time 1775758674.32 total 30.05 last 58.92)
 - open/close 2224 (time 1775758684.33 total 40.06 last 52.25)
 - open/close 2785 (time 1775758694.34 total 50.07 last 56.03)
 - open/close 3309 (time 1775758704.35 total 60.07 last 52.39)
 - open/close 3860 (time 1775758714.35 total 70.07 last 55.09)
 - open/close 4395 (time 1775758724.35 total 80.08 last 53.48)
 - open/close 4952 (time 1775758734.35 total 90.08 last 55.70)
total: 5000 open/close in 90.85 seconds: 55.04 ops/second
fail_loc=0x80000137
 - unlinked 0 (time 1775758739 ; total 0 ; last 0)
total: 5000 unlinks in 67 seconds: 74.626869 unlinks/second
fail_loc=0