== sanity test 60c: unlink file when mds full ============ 12:42:50 (1780332170)
create 5000 files
 - open/close 452 (time 1780332185.80 total 10.02 last 45.10)
 - open/close 1044 (time 1780332195.81 total 20.03 last 59.14)
 - open/close 1560 (time 1780332205.82 total 30.03 last 51.59)
 - open/close 2094 (time 1780332215.83 total 40.04 last 53.34)
 - open/close 2698 (time 1780332225.83 total 50.05 last 60.36)
 - open/close 3152 (time 1780332235.85 total 60.07 last 45.31)
 - open/close 3637 (time 1780332245.87 total 70.08 last 48.44)
 - open/close 4190 (time 1780332255.88 total 80.10 last 55.21)
 - open/close 4775 (time 1780332265.90 total 90.12 last 58.40)
total: 5000 open/close in 94.33 seconds: 53.00 ops/second
fail_loc=0x80000137
 - unlinked 0 (time 1780332274 ; total 0 ; last 0)
total: 5000 unlinks in 57 seconds: 87.719299 unlinks/second
fail_loc=0