== sanity test 60c: unlink file when mds full ============ 18:31:06 (1788561066)
create 5000 files
 - open/close 404 (time 1788561080.83 total 10.01 last 40.36)
 - open/close 786 (time 1788561090.83 total 20.01 last 38.20)
 - open/close 1176 (time 1788561100.84 total 30.02 last 38.96)
 - open/close 1486 (time 1788561110.85 total 40.03 last 30.99)
 - open/close 1899 (time 1788561120.86 total 50.04 last 41.25)
 - open/close 2305 (time 1788561130.87 total 60.05 last 40.56)
 - open/close 2741 (time 1788561140.87 total 70.05 last 43.58)
 - open/close 3224 (time 1788561150.88 total 80.06 last 48.23)
 - open/close 3665 (time 1788561160.89 total 90.07 last 44.07)
 - open/close 4201 (time 1788561170.92 total 100.10 last 53.47)
 - open/close 4667 (time 1788561180.93 total 110.11 last 46.55)
total: 5000 open/close in 116.69 seconds: 42.85 ops/second
fail_loc=0x80000137
 - unlinked 0 (time 1788561192 ; total 0 ; last 0)
total: 5000 unlinks in 91 seconds: 54.945053 unlinks/second
fail_loc=0