== sanity test 60c: unlink file when mds full ============ 10:11:10 (1787839870)
create 5000 files
 - open/close 571 (time 1787839885.30 total 10.01 last 57.05)
 - open/close 1144 (time 1787839895.30 total 20.01 last 57.27)
 - open/close 1674 (time 1787839905.33 total 30.04 last 52.87)
 - open/close 2190 (time 1787839915.34 total 40.05 last 51.53)
 - open/close 2725 (time 1787839925.35 total 50.06 last 53.46)
 - open/close 3294 (time 1787839935.35 total 60.07 last 56.86)
 - open/close 3848 (time 1787839945.36 total 70.07 last 55.39)
 - open/close 4349 (time 1787839955.37 total 80.08 last 50.04)
 - open/close 4893 (time 1787839965.37 total 90.08 last 54.38)
total: 5000 open/close in 92.19 seconds: 54.23 ops/second
fail_loc=0x80000137
 - unlinked 0 (time 1787839971 ; total 0 ; last 0)
total: 5000 unlinks in 56 seconds: 89.285713 unlinks/second
fail_loc=0