== sanity test 60c: unlink file when mds full ============ 07:57:24 (1788263844)
create 5000 files
 - open/close 458 (time 1788263859.79 total 10.02 last 45.73)
 - open/close 1006 (time 1788263869.80 total 20.03 last 54.72)
 - open/close 1484 (time 1788263879.81 total 30.03 last 47.78)
 - open/close 1907 (time 1788263889.83 total 40.05 last 42.22)
 - open/close 2394 (time 1788263899.84 total 50.07 last 48.62)
 - open/close 2876 (time 1788263909.85 total 60.08 last 48.16)
 - open/close 3326 (time 1788263919.87 total 70.10 last 44.91)
 - open/close 3770 (time 1788263929.88 total 80.11 last 44.35)
 - open/close 4324 (time 1788263939.89 total 90.12 last 55.34)
 - open/close 4828 (time 1788263949.91 total 100.13 last 50.32)
total: 5000 open/close in 102.99 seconds: 48.55 ops/second
fail_loc=0x80000137
 - unlinked 0 (time 1788263957 ; total 0 ; last 0)
total: 5000 unlinks in 76 seconds: 65.789474 unlinks/second
fail_loc=0