== sanity test 60c: unlink file when mds full ============ 10:41:03 (1788619263)
create 5000 files
 - open/close 470 (time 1788619278.27 total 10.01 last 46.95)
 - open/close 961 (time 1788619288.27 total 20.01 last 49.10)
 - open/close 1438 (time 1788619298.27 total 30.01 last 47.69)
 - open/close 1927 (time 1788619308.29 total 40.03 last 48.82)
 - open/close 2386 (time 1788619318.30 total 50.04 last 45.84)
 - open/close 2866 (time 1788619328.32 total 60.06 last 47.94)
 - open/close 3364 (time 1788619338.32 total 70.06 last 49.75)
 - open/close 3889 (time 1788619348.35 total 80.09 last 52.36)
 - open/close 4352 (time 1788619358.36 total 90.10 last 46.24)
 - open/close 4813 (time 1788619368.37 total 100.11 last 46.09)
total: 5000 open/close in 104.51 seconds: 47.84 ops/second
fail_loc=0x80000137
 - unlinked 0 (time 1788619377 ; total 0 ; last 0)
total: 5000 unlinks in 75 seconds: 66.666664 unlinks/second
fail_loc=0