== sanity test 60c: unlink file when mds full ============ 23:15:14 (1781234114)
create 5000 files
 - open/close 437 (time 1781234128.63 total 10.00 last 43.69)
 - open/close 858 (time 1781234138.64 total 20.01 last 42.07)
 - open/close 1280 (time 1781234148.67 total 30.03 last 42.10)
 - open/close 1695 (time 1781234158.68 total 40.05 last 41.45)
 - open/close 2078 (time 1781234168.69 total 50.06 last 38.24)
 - open/close 2487 (time 1781234178.70 total 60.07 last 40.86)
 - open/close 2908 (time 1781234188.71 total 70.08 last 42.06)
 - open/close 3359 (time 1781234198.72 total 80.09 last 45.07)
 - open/close 3819 (time 1781234208.74 total 90.11 last 45.90)
 - open/close 4229 (time 1781234218.76 total 100.13 last 40.91)
 - open/close 4671 (time 1781234228.77 total 110.14 last 44.17)
total: 5000 open/close in 117.42 seconds: 42.58 ops/second
fail_loc=0x80000137
 - unlinked 0 (time 1781234240 ; total 0 ; last 0)
total: 5000 unlinks in 77 seconds: 64.935066 unlinks/second
fail_loc=0