== sanity test 60c: unlink file when mds full ============ 23:55:14 (1790740514)
create 5000 files
 - open/close 526 (time 1790740528.21 total 10.02 last 52.51)
 - open/close 1013 (time 1790740538.22 total 20.03 last 48.64)
 - open/close 1520 (time 1790740548.23 total 30.04 last 50.63)
 - open/close 2001 (time 1790740558.24 total 40.05 last 48.07)
 - open/close 2441 (time 1790740568.26 total 50.07 last 43.91)
 - open/close 2945 (time 1790740578.27 total 60.08 last 50.37)
 - open/close 3409 (time 1790740588.28 total 70.09 last 46.32)
 - open/close 3893 (time 1790740598.29 total 80.10 last 48.37)
 - open/close 4382 (time 1790740608.29 total 90.10 last 48.89)
 - open/close 4891 (time 1790740618.32 total 100.13 last 50.78)
total: 5000 open/close in 102.20 seconds: 48.92 ops/second
fail_loc=0x80000137
 - unlinked 0 (time 1790740625 ; total 0 ; last 0)
total: 5000 unlinks in 71 seconds: 70.422539 unlinks/second
fail_loc=0