== sanity test 60c: unlink file when mds full ============ 04:29:33 (1789115373)
create 5000 files
 - open/close 510 (time 1789115388.16 total 10.00 last 50.99)
 - open/close 1019 (time 1789115398.16 total 20.00 last 50.90)
 - open/close 1475 (time 1789115408.17 total 30.02 last 45.53)
 - open/close 1955 (time 1789115418.19 total 40.03 last 47.92)
 - open/close 2377 (time 1789115428.19 total 50.04 last 42.19)
 - open/close 2884 (time 1789115438.20 total 60.05 last 50.63)
 - open/close 3377 (time 1789115448.21 total 70.05 last 49.29)
 - open/close 3906 (time 1789115458.22 total 80.07 last 52.84)
 - open/close 4378 (time 1789115468.22 total 90.07 last 47.17)
 - open/close 4807 (time 1789115478.24 total 100.08 last 42.86)
total: 5000 open/close in 104.48 seconds: 47.85 ops/second
fail_loc=0x80000137
 - unlinked 0 (time 1789115487 ; total 0 ; last 0)
total: 5000 unlinks in 72 seconds: 69.444443 unlinks/second
fail_loc=0