== sanity test 60c: unlink file when mds full ============ 10:59:12 (1788620352)
create 5000 files
 - open/close 628 (time 1788620366.55 total 10.00 last 62.79)
 - open/close 1286 (time 1788620376.57 total 20.02 last 65.68)
 - open/close 1907 (time 1788620386.57 total 30.02 last 62.08)
 - open/close 2513 (time 1788620396.58 total 40.04 last 60.51)
 - open/close 3099 (time 1788620406.59 total 50.04 last 58.57)
 - open/close 3621 (time 1788620416.60 total 60.05 last 52.14)
 - open/close 4021 (time 1788620426.61 total 70.06 last 39.98)
 - open/close 4534 (time 1788620436.62 total 80.08 last 51.21)
total: 5000 open/close in 88.95 seconds: 56.21 ops/second
fail_loc=0x80000137
 - unlinked 0 (time 1788620449 ; total 0 ; last 0)
total: 5000 unlinks in 59 seconds: 84.745766 unlinks/second
fail_loc=0