== sanity test 60c: unlink file when mds full ============ 07:53:30 (1788609210)
create 5000 files
 - open/close 624 (time 1788609224.33 total 10.00 last 62.38)
 - open/close 1164 (time 1788609234.35 total 20.03 last 53.86)
 - open/close 1753 (time 1788609244.36 total 30.04 last 58.85)
 - open/close 2327 (time 1788609254.38 total 40.05 last 57.33)
 - open/close 2832 (time 1788609264.40 total 50.08 last 50.36)
 - open/close 3384 (time 1788609274.41 total 60.09 last 55.15)
 - open/close 3986 (time 1788609284.42 total 70.09 last 60.19)
 - open/close 4523 (time 1788609294.42 total 80.09 last 53.67)
 - open/close 4973 (time 1788609304.43 total 90.10 last 44.97)
total: 5000 open/close in 90.59 seconds: 55.20 ops/second
fail_loc=0x80000137
 - unlinked 0 (time 1788609308 ; total 0 ; last 0)
total: 5000 unlinks in 74 seconds: 67.567566 unlinks/second
fail_loc=0