== sanity test 60c: unlink file when mds full ============ 07:52:34 (1789127554)
create 5000 files
 - open/close 501 (time 1789127568.81 total 10.01 last 50.06)
 - open/close 1024 (time 1789127578.85 total 20.04 last 52.13)
 - open/close 1549 (time 1789127588.86 total 30.05 last 52.45)
 - open/close 2058 (time 1789127598.87 total 40.07 last 50.81)
 - open/close 2564 (time 1789127608.89 total 50.09 last 50.51)
 - open/close 3066 (time 1789127618.91 total 60.10 last 50.12)
 - open/close 3567 (time 1789127628.91 total 70.11 last 50.09)
 - open/close 4054 (time 1789127638.92 total 80.12 last 48.63)
 - open/close 4530 (time 1789127648.94 total 90.13 last 47.53)
total: 5000 open/close in 99.55 seconds: 50.22 ops/second
fail_loc=0x80000137
 - unlinked 0 (time 1789127662 ; total 0 ; last 0)
total: 5000 unlinks in 65 seconds: 76.923080 unlinks/second
fail_loc=0