== sanity test 60c: unlink file when mds full ============ 15:33:00 (1788636780)
create 5000 files
 - open/close 506 (time 1788636794.62 total 10.02 last 50.48)
 - open/close 962 (time 1788636804.66 total 20.06 last 45.41)
 - open/close 1438 (time 1788636814.68 total 30.08 last 47.51)
 - open/close 1934 (time 1788636824.69 total 40.10 last 49.54)
 - open/close 2453 (time 1788636834.70 total 50.11 last 51.85)
 - open/close 2983 (time 1788636844.71 total 60.11 last 52.97)
 - open/close 3472 (time 1788636854.72 total 70.12 last 48.86)
 - open/close 3965 (time 1788636864.73 total 80.13 last 49.24)
 - open/close 4458 (time 1788636874.74 total 90.14 last 49.24)
 - open/close 4953 (time 1788636884.75 total 100.15 last 49.47)
total: 5000 open/close in 101.12 seconds: 49.45 ops/second
fail_loc=0x80000137
 - unlinked 0 (time 1788636889 ; total 0 ; last 0)
total: 5000 unlinks in 73 seconds: 68.493149 unlinks/second
fail_loc=0