== sanity test 60c: unlink file when mds full ============ 00:54:34 (1789448074)
create 5000 files
 - open/close 537 (time 1789448088.80 total 10.01 last 53.66)
 - open/close 1070 (time 1789448098.80 total 20.01 last 53.26)
 - open/close 1579 (time 1789448108.81 total 30.03 last 50.84)
 - open/close 2072 (time 1789448118.82 total 40.03 last 49.28)
 - open/close 2550 (time 1789448128.84 total 50.05 last 47.71)
 - open/close 2999 (time 1789448138.85 total 60.06 last 44.85)
 - open/close 3476 (time 1789448148.89 total 70.10 last 47.53)
 - open/close 3924 (time 1789448158.89 total 80.10 last 44.77)
 - open/close 4338 (time 1789448168.89 total 90.10 last 41.39)
 - open/close 4784 (time 1789448178.90 total 100.11 last 44.57)
total: 5000 open/close in 105.08 seconds: 47.58 ops/second
fail_loc=0x80000137
 - unlinked 0 (time 1789448188 ; total 0 ; last 0)
total: 5000 unlinks in 74 seconds: 67.567566 unlinks/second
fail_loc=0