== sanity test 60c: unlink file when mds full ============ 13:22:54 (1788801774)
create 5000 files
 - open/close 555 (time 1788801789.40 total 10.00 last 55.49)
 - open/close 1086 (time 1788801799.40 total 20.01 last 53.09)
 - open/close 1550 (time 1788801809.40 total 30.01 last 46.40)
 - open/close 1995 (time 1788801819.41 total 40.01 last 44.46)
 - open/close 2495 (time 1788801829.42 total 50.02 last 49.96)
 - open/close 3036 (time 1788801839.44 total 60.05 last 53.98)
 - open/close 3526 (time 1788801849.45 total 70.06 last 48.94)
 - open/close 4037 (time 1788801859.46 total 80.06 last 51.09)
 - open/close 4541 (time 1788801869.49 total 90.09 last 50.23)
total: 5000 open/close in 99.19 seconds: 50.41 ops/second
fail_loc=0x80000137
 - unlinked 0 (time 1788801882 ; total 0 ; last 0)
total: 5000 unlinks in 70 seconds: 71.428574 unlinks/second
fail_loc=0