== sanity test 60c: unlink file when mds full ============ 15:29:25 (1788463765)
create 5000 files
 - open/close 326 (time 1788463781.48 total 10.02 last 32.54)
 - open/close 690 (time 1788463791.48 total 20.02 last 36.39)
 - open/close 1029 (time 1788463801.48 total 30.03 last 33.89)
 - open/close 1389 (time 1788463811.50 total 40.05 last 35.92)
 - open/close 1830 (time 1788463821.53 total 50.07 last 44.00)
 - open/close 2268 (time 1788463831.53 total 60.08 last 43.77)
 - open/close 2682 (time 1788463841.55 total 70.09 last 41.33)
 - open/close 3115 (time 1788463851.57 total 80.11 last 43.22)
 - open/close 3527 (time 1788463861.57 total 90.12 last 41.18)
 - open/close 3890 (time 1788463871.58 total 100.13 last 36.27)
 - open/close 4288 (time 1788463881.60 total 110.14 last 39.74)
 - open/close 4656 (time 1788463891.60 total 120.15 last 36.78)
total: 5000 open/close in 128.78 seconds: 38.83 ops/second
fail_loc=0x80000137
 - unlinked 0 (time 1788463905 ; total 0 ; last 0)
total: 5000 unlinks in 84 seconds: 59.523811 unlinks/second
fail_loc=0