== sanity test 60c: unlink file when mds full ============ 16:40:35 (1781210435)
create 5000 files
 - open/close 520 (time 1781210449.68 total 10.03 last 51.87)
 - open/close 995 (time 1781210459.69 total 20.04 last 47.44)
 - open/close 1521 (time 1781210469.70 total 30.04 last 52.57)
 - open/close 2121 (time 1781210479.70 total 40.05 last 59.98)
 - open/close 2646 (time 1781210489.71 total 50.06 last 52.46)
 - open/close 3175 (time 1781210499.76 total 60.11 last 52.62)
 - open/close 3610 (time 1781210509.79 total 70.13 last 43.39)
 - open/close 4034 (time 1781210519.79 total 80.14 last 42.39)
 - open/close 4565 (time 1781210529.80 total 90.15 last 53.04)
total: 5000 open/close in 98.34 seconds: 50.85 ops/second
fail_loc=0x80000137
 - unlinked 0 (time 1781210541 ; total 0 ; last 0)
total: 5000 unlinks in 65 seconds: 76.923080 unlinks/second
fail_loc=0