== sanity test 60c: unlink file when mds full ============ 10:47:33 (1790779653)
create 5000 files
 - open/close 540 (time 1790779668.20 total 10.01 last 53.96)
 - open/close 1030 (time 1790779678.21 total 20.03 last 48.91)
 - open/close 1441 (time 1790779688.22 total 30.03 last 41.09)
 - open/close 1842 (time 1790779698.25 total 40.06 last 39.99)
 - open/close 2266 (time 1790779708.25 total 50.06 last 42.37)
 - open/close 2724 (time 1790779718.26 total 60.07 last 45.78)
 - open/close 3162 (time 1790779728.27 total 70.08 last 43.75)
 - open/close 3631 (time 1790779738.28 total 80.09 last 46.87)
 - open/close 4150 (time 1790779748.28 total 90.09 last 51.87)
 - open/close 4690 (time 1790779758.29 total 100.10 last 53.96)
total: 5000 open/close in 106.59 seconds: 46.91 ops/second
fail_loc=0x80000137
 - unlinked 0 (time 1790779770 ; total 0 ; last 0)
total: 5000 unlinks in 72 seconds: 69.444443 unlinks/second
fail_loc=0