== sanity test 60c: unlink file when mds full ============ 16:38:44 (1788813524)
create 5000 files
 - open/close 407 (time 1788813540.22 total 10.02 last 40.64)
 - open/close 812 (time 1788813550.22 total 20.02 last 40.46)
 - open/close 1277 (time 1788813560.24 total 30.04 last 46.42)
 - open/close 1800 (time 1788813570.25 total 40.05 last 52.28)
 - open/close 2360 (time 1788813580.27 total 50.07 last 55.89)
 - open/close 2816 (time 1788813590.28 total 60.08 last 45.55)
 - open/close 3301 (time 1788813600.28 total 70.08 last 48.50)
 - open/close 3760 (time 1788813610.31 total 80.11 last 45.75)
 - open/close 4218 (time 1788813620.34 total 90.14 last 45.68)
 - open/close 4701 (time 1788813630.35 total 100.15 last 48.25)
total: 5000 open/close in 105.77 seconds: 47.27 ops/second
fail_loc=0x80000137
 - unlinked 0 (time 1788813640 ; total 0 ; last 0)
total: 5000 unlinks in 78 seconds: 64.102562 unlinks/second
fail_loc=0