== sanity test 60c: unlink file when mds full ============ 16:17:28 (1788725848)
create 5000 files
 - open/close 524 (time 1788725862.74 total 10.01 last 52.36)
 - open/close 1042 (time 1788725872.78 total 20.04 last 51.63)
 - open/close 1545 (time 1788725882.80 total 30.07 last 50.17)
 - open/close 2072 (time 1788725892.81 total 40.08 last 52.64)
 - open/close 2579 (time 1788725902.82 total 50.09 last 50.64)
 - open/close 3044 (time 1788725912.84 total 60.11 last 46.41)
 - open/close 3450 (time 1788725922.84 total 70.11 last 40.60)
 - open/close 3818 (time 1788725932.85 total 80.11 last 36.78)
 - open/close 4273 (time 1788725942.85 total 90.11 last 45.49)
 - open/close 4726 (time 1788725952.85 total 100.12 last 45.28)
total: 5000 open/close in 106.83 seconds: 46.80 ops/second
fail_loc=0x80000137
 - unlinked 0 (time 1788725964 ; total 0 ; last 0)
total: 5000 unlinks in 69 seconds: 72.463768 unlinks/second
fail_loc=0