== sanity test 60c: unlink file when mds full ============ 16:20:18 (1781209218)
create 5000 files
 - open/close 560 (time 1781209232.85 total 10.01 last 55.96)
 - open/close 1057 (time 1781209242.86 total 20.02 last 49.66)
 - open/close 1541 (time 1781209252.89 total 30.04 last 48.26)
 - open/close 1998 (time 1781209262.93 total 40.09 last 45.51)
 - open/close 2582 (time 1781209272.93 total 50.09 last 58.38)
 - open/close 3092 (time 1781209282.94 total 60.09 last 50.99)
 - open/close 3544 (time 1781209292.94 total 70.10 last 45.18)
 - open/close 4042 (time 1781209302.95 total 80.10 last 49.77)
 - open/close 4498 (time 1781209312.96 total 90.11 last 45.55)
 - open/close 4969 (time 1781209322.97 total 100.13 last 47.03)
total: 5000 open/close in 100.62 seconds: 49.69 ops/second
fail_loc=0x80000137
 - unlinked 0 (time 1781209328 ; total 0 ; last 0)
total: 5000 unlinks in 92 seconds: 54.347828 unlinks/second
fail_loc=0