== sanity test 60c: unlink file when mds full ============ 09:54:28 (1790690068)
create 5000 files
 - open/close 475 (time 1790690083.37 total 10.01 last 47.45)
 - open/close 954 (time 1790690093.37 total 20.01 last 47.89)
 - open/close 1462 (time 1790690103.39 total 30.03 last 50.69)
 - open/close 1997 (time 1790690113.40 total 40.04 last 53.45)
 - open/close 2493 (time 1790690123.41 total 50.05 last 49.56)
 - open/close 2975 (time 1790690133.42 total 60.06 last 48.16)
 - open/close 3426 (time 1790690143.42 total 70.06 last 45.08)
 - open/close 3885 (time 1790690153.42 total 80.07 last 45.88)
 - open/close 4329 (time 1790690163.46 total 90.10 last 44.26)
 - open/close 4818 (time 1790690173.48 total 100.12 last 48.81)
total: 5000 open/close in 103.90 seconds: 48.12 ops/second
fail_loc=0x80000137
 - unlinked 0 (time 1790690180 ; total 0 ; last 0)
total: 5000 unlinks in 74 seconds: 67.567566 unlinks/second
fail_loc=0