== sanity test 60c: unlink file when mds full ============ 14:35:39 (1789583739)
create 5000 files
 - open/close 704 (time 1789583754.14 total 10.00 last 70.38)
 - open/close 1272 (time 1789583764.14 total 20.01 last 56.78)
 - open/close 1861 (time 1789583774.17 total 30.04 last 58.71)
 - open/close 2453 (time 1789583784.18 total 40.05 last 59.16)
 - open/close 3011 (time 1789583794.19 total 50.05 last 55.78)
 - open/close 3569 (time 1789583804.21 total 60.07 last 55.68)
 - open/close 4178 (time 1789583814.21 total 70.08 last 60.87)
 - open/close 4740 (time 1789583824.23 total 80.09 last 56.12)
total: 5000 open/close in 84.60 seconds: 59.10 ops/second
fail_loc=0x80000137
 - unlinked 0 (time 1789583833 ; total 0 ; last 0)
total: 5000 unlinks in 63 seconds: 79.365082 unlinks/second
fail_loc=0