== sanity test 60c: unlink file when mds full ============ 10:09:54 (1788271794)
create 5000 files
 - open/close 533 (time 1788271809.07 total 10.00 last 53.28)
 - open/close 965 (time 1788271819.11 total 20.05 last 43.01)
 - open/close 1444 (time 1788271829.11 total 30.05 last 47.89)
 - open/close 1909 (time 1788271839.13 total 40.07 last 46.44)
 - open/close 2393 (time 1788271849.13 total 50.07 last 48.37)
 - open/close 2813 (time 1788271859.16 total 60.10 last 41.88)
 - open/close 3214 (time 1788271869.18 total 70.12 last 40.03)
 - open/close 3688 (time 1788271879.20 total 80.14 last 47.31)
 - open/close 4118 (time 1788271889.20 total 90.14 last 42.98)
 - open/close 4564 (time 1788271899.21 total 100.15 last 44.57)
total: 5000 open/close in 108.88 seconds: 45.92 ops/second
fail_loc=0x80000137
 - unlinked 0 (time 1788271912 ; total 0 ; last 0)
total: 5000 unlinks in 83 seconds: 60.240963 unlinks/second
fail_loc=0