== sanity test 60c: unlink file when mds full ============ 10:54:35 (1788360875)
create 5000 files
 - open/close 640 (time 1788360887.96 total 10.01 last 63.94)
 - open/close 1267 (time 1788360897.98 total 20.03 last 62.60)
 - open/close 1892 (time 1788360907.99 total 30.04 last 62.41)
 - open/close 2507 (time 1788360918.00 total 40.05 last 61.47)
 - open/close 3164 (time 1788360928.01 total 50.05 last 65.64)
 - open/close 3799 (time 1788360938.02 total 60.06 last 63.45)
 - open/close 4421 (time 1788360948.04 total 70.08 last 62.08)
total: 5000 open/close in 79.36 seconds: 63.00 ops/second
fail_loc=0x80000137
 - unlinked 0 (time 1788360960 ; total 0 ; last 0)
total: 5000 unlinks in 54 seconds: 92.592590 unlinks/second
fail_loc=0