== sanity test 60c: unlink file when mds full ============ 19:23:00 (1789428180)
create 5000 files
 - open/close 509 (time 1789428194.20 total 10.01 last 50.86)
 - open/close 1040 (time 1789428204.20 total 20.01 last 53.07)
 - open/close 1625 (time 1789428214.21 total 30.02 last 58.46)
 - open/close 2228 (time 1789428224.21 total 40.02 last 60.30)
 - open/close 2743 (time 1789428234.21 total 50.02 last 51.49)
 - open/close 3281 (time 1789428244.22 total 60.03 last 53.76)
 - open/close 3849 (time 1789428254.22 total 70.03 last 56.78)
 - open/close 4421 (time 1789428264.23 total 80.04 last 57.15)
 - open/close 4966 (time 1789428274.24 total 90.05 last 54.45)
total: 5000 open/close in 90.64 seconds: 55.16 ops/second
fail_loc=0x80000137
 - unlinked 0 (time 1789428278 ; total 0 ; last 0)
total: 5000 unlinks in 65 seconds: 76.923080 unlinks/second
fail_loc=0