== sanity test 60c: unlink file when mds full ============ 22:01:49 (1788832909)
create 5000 files
 - open/close 528 (time 1788832922.75 total 10.02 last 52.71)
 - open/close 1082 (time 1788832932.79 total 20.06 last 55.15)
 - open/close 1639 (time 1788832942.81 total 30.08 last 55.59)
 - open/close 2175 (time 1788832952.83 total 40.10 last 53.51)
 - open/close 2708 (time 1788832962.83 total 50.11 last 53.27)
 - open/close 3241 (time 1788832972.84 total 60.11 last 53.27)
 - open/close 3739 (time 1788832982.84 total 70.11 last 49.80)
 - open/close 4287 (time 1788832992.84 total 80.12 last 54.78)
 - open/close 4788 (time 1788833002.86 total 90.13 last 50.01)
total: 5000 open/close in 94.53 seconds: 52.89 ops/second
fail_loc=0x80000137
 - unlinked 0 (time 1788833011 ; total 0 ; last 0)
total: 5000 unlinks in 66 seconds: 75.757576 unlinks/second
fail_loc=0