== sanity test 60c: unlink file when mds full ============ 23:50:41 (1788753041)
create 5000 files
 - open/close 561 (time 1788753056.58 total 10.00 last 56.10)
 - open/close 1196 (time 1788753066.59 total 20.01 last 63.46)
 - open/close 1784 (time 1788753076.59 total 30.01 last 58.80)
 - open/close 2461 (time 1788753086.59 total 40.01 last 67.70)
 - open/close 3150 (time 1788753096.60 total 50.01 last 68.85)
 - open/close 3825 (time 1788753106.60 total 60.02 last 67.46)
 - open/close 4375 (time 1788753116.61 total 70.03 last 54.94)
 - open/close 4971 (time 1788753126.64 total 80.06 last 59.46)
total: 5000 open/close in 80.72 seconds: 61.94 ops/second
fail_loc=0x80000137
 - unlinked 0 (time 1788753131 ; total 0 ; last 0)
total: 5000 unlinks in 82 seconds: 60.975609 unlinks/second
fail_loc=0