== sanity test 60c: unlink file when mds full ============ 10:38:47 (1788791927)
create 5000 files
 - open/close 559 (time 1788791942.10 total 10.01 last 55.86)
 - open/close 1173 (time 1788791952.11 total 20.01 last 61.36)
 - open/close 1815 (time 1788791962.11 total 30.02 last 64.18)
 - open/close 2436 (time 1788791972.12 total 40.03 last 62.02)
 - open/close 3064 (time 1788791982.13 total 50.04 last 62.75)
 - open/close 3630 (time 1788791992.14 total 60.05 last 56.54)
 - open/close 4133 (time 1788792002.17 total 70.07 last 50.18)
 - open/close 4684 (time 1788792012.18 total 80.09 last 55.01)
total: 5000 open/close in 85.48 seconds: 58.49 ops/second
fail_loc=0x80000137
 - unlinked 0 (time 1788792021 ; total 0 ; last 0)
total: 5000 unlinks in 56 seconds: 89.285713 unlinks/second
fail_loc=0