== sanity test 60c: unlink file when mds full ============ 15:02:29 (1782241349)
create 5000 files
 - open/close 482 (time 1782241363.45 total 10.00 last 48.18)
 - open/close 973 (time 1782241373.46 total 20.02 last 49.03)
 - open/close 1480 (time 1782241383.48 total 30.04 last 50.60)
 - open/close 1979 (time 1782241393.52 total 40.08 last 49.72)
 - open/close 2480 (time 1782241403.53 total 50.08 last 50.06)
 - open/close 2986 (time 1782241413.54 total 60.10 last 50.53)
 - open/close 3488 (time 1782241423.55 total 70.10 last 50.18)
 - open/close 3982 (time 1782241433.55 total 80.10 last 49.40)
 - open/close 4464 (time 1782241443.56 total 90.12 last 48.13)
 - open/close 4940 (time 1782241453.60 total 100.15 last 47.43)
total: 5000 open/close in 101.55 seconds: 49.24 ops/second
fail_loc=0x80000137
 - unlinked 0 (time 1782241459 ; total 0 ; last 0)
total: 5000 unlinks in 73 seconds: 68.493149 unlinks/second
fail_loc=0