== sanity test 60c: unlink file when mds full ============ 14:52:25 (1789671145)
create 5000 files
 - open/close 559 (time 1789671159.90 total 10.00 last 55.89)
 - open/close 1181 (time 1789671169.91 total 20.01 last 62.16)
 - open/close 1804 (time 1789671179.92 total 30.02 last 62.25)
 - open/close 2437 (time 1789671189.92 total 40.02 last 63.28)
 - open/close 2995 (time 1789671199.92 total 50.02 last 55.80)
 - open/close 3485 (time 1789671209.93 total 60.03 last 48.98)
 - open/close 3916 (time 1789671219.93 total 70.03 last 43.08)
 - open/close 4462 (time 1789671229.94 total 80.04 last 54.52)
total: 5000 open/close in 89.23 seconds: 56.04 ops/second
fail_loc=0x80000137
 - unlinked 0 (time 1789671244 ; total 1 ; last 1)
total: 5000 unlinks in 65 seconds: 76.923080 unlinks/second
fail_loc=0