== sanity test 60c: unlink file when mds full ============ 18:32:40 (1788561160)
create 5000 files
 - open/close 444 (time 1788561175.18 total 10.01 last 44.36)
 - open/close 1111 (time 1788561185.19 total 20.02 last 66.63)
 - open/close 1710 (time 1788561195.21 total 30.04 last 59.76)
 - open/close 2240 (time 1788561205.22 total 40.05 last 52.93)
 - open/close 2733 (time 1788561215.23 total 50.06 last 49.27)
 - open/close 3121 (time 1788561225.25 total 60.08 last 38.74)
 - open/close 3606 (time 1788561235.25 total 70.08 last 48.47)
 - open/close 4152 (time 1788561245.26 total 80.09 last 54.56)
 - open/close 4616 (time 1788561255.26 total 90.09 last 46.39)
total: 5000 open/close in 97.24 seconds: 51.42 ops/second
fail_loc=0x80000137
 - unlinked 0 (time 1788561267 ; total 0 ; last 0)
total: 5000 unlinks in 73 seconds: 68.493149 unlinks/second
fail_loc=0