== sanity test 60c: unlink file when mds full ============ 12:19:15 (1789057155)
create 5000 files
 - open/close 546 (time 1789057171.35 total 10.02 last 54.49)
 - open/close 881 (time 1789057181.36 total 20.03 last 33.48)
 - open/close 1246 (time 1789057191.42 total 30.09 last 36.28)
 - open/close 1735 (time 1789057201.43 total 40.10 last 48.86)
 - open/close 2295 (time 1789057211.43 total 50.10 last 56.00)
 - open/close 2849 (time 1789057221.44 total 60.11 last 55.35)
 - open/close 3261 (time 1789057231.45 total 70.11 last 41.17)
 - open/close 3710 (time 1789057241.46 total 80.13 last 44.82)
 - open/close 4237 (time 1789057251.47 total 90.14 last 52.64)
 - open/close 4819 (time 1789057261.50 total 100.17 last 58.04)
total: 5000 open/close in 103.58 seconds: 48.27 ops/second
fail_loc=0x80000137
 - unlinked 0 (time 1789057269 ; total 0 ; last 0)
total: 5000 unlinks in 58 seconds: 86.206894 unlinks/second
fail_loc=0