== sanity test 60c: unlink file when mds full ============ 23:02:29 (1790391749)
create 5000 files
 - open/close 428 (time 1790391764.25 total 10.00 last 42.78)
 - open/close 823 (time 1790391774.28 total 20.03 last 39.38)
 - open/close 1210 (time 1790391784.28 total 30.04 last 38.67)
 - open/close 1651 (time 1790391794.30 total 40.06 last 44.01)
 - open/close 2087 (time 1790391804.31 total 50.07 last 43.58)
 - open/close 2506 (time 1790391814.31 total 60.07 last 41.88)
 - open/close 2942 (time 1790391824.32 total 70.07 last 43.59)
 - open/close 3400 (time 1790391834.32 total 80.08 last 45.76)
 - open/close 3900 (time 1790391844.33 total 90.09 last 49.96)
 - open/close 4359 (time 1790391854.34 total 100.10 last 45.87)
 - open/close 4854 (time 1790391864.35 total 110.11 last 49.43)
total: 5000 open/close in 113.24 seconds: 44.15 ops/second
fail_loc=0x80000137
 - unlinked 0 (time 1790391871 ; total 0 ; last 0)
total: 5000 unlinks in 68 seconds: 73.529411 unlinks/second
fail_loc=0