== sanity test 60c: unlink file when mds full ============ 12:42:18 (1788540138)
create 5000 files
 - open/close 553 (time 1788540153.01 total 10.00 last 55.29)
 - open/close 995 (time 1788540163.04 total 20.04 last 44.05)
 - open/close 1495 (time 1788540173.06 total 30.06 last 49.90)
 - open/close 1908 (time 1788540183.06 total 40.06 last 41.30)
 - open/close 2323 (time 1788540193.07 total 50.07 last 41.45)
 - open/close 2772 (time 1788540203.09 total 60.08 last 44.84)
 - open/close 3155 (time 1788540213.10 total 70.09 last 38.27)
 - open/close 3607 (time 1788540223.11 total 80.11 last 45.13)
 - open/close 4077 (time 1788540233.13 total 90.12 last 46.93)
 - open/close 4556 (time 1788540243.13 total 100.13 last 47.86)
total: 5000 open/close in 108.87 seconds: 45.93 ops/second
fail_loc=0x80000137
 - unlinked 0 (time 1788540256 ; total 0 ; last 0)
total: 5000 unlinks in 69 seconds: 72.463768 unlinks/second
fail_loc=0