== sanity test 60c: unlink file when mds full ============ 12:08:08 (1788970088)
create 5000 files
 - open/close 557 (time 1788970103.09 total 10.01 last 55.64)
 - open/close 1116 (time 1788970113.09 total 20.02 last 55.86)
 - open/close 1701 (time 1788970123.10 total 30.03 last 58.45)
 - open/close 2216 (time 1788970133.11 total 40.04 last 51.45)
 - open/close 2761 (time 1788970143.13 total 50.05 last 54.41)
 - open/close 3317 (time 1788970153.13 total 60.05 last 55.59)
 - open/close 3852 (time 1788970163.13 total 70.06 last 53.48)
 - open/close 4363 (time 1788970173.15 total 80.07 last 51.03)
 - open/close 4882 (time 1788970183.16 total 90.08 last 51.85)
total: 5000 open/close in 92.23 seconds: 54.21 ops/second
fail_loc=0x80000137
 - unlinked 0 (time 1788970189 ; total 0 ; last 0)
total: 5000 unlinks in 69 seconds: 72.463768 unlinks/second
fail_loc=0