[Users] Very bad write performance in VM (ovirt 3.3.3)

Hello List, i set up a Cluster with 2 Nodes and Glusterfs. gluster> volume info all Volume Name: Repl2 Type: Replicate Volume ID: 8af9b282-8b60-4d71-a0fd-9116b8fdcca7 Status: Started Number of Bricks: 1 x 2 = 2 Transport-type: tcp Bricks: Brick1: node1.local:/data Brick2: node2.local:/data Options Reconfigured: auth.allow: * user.cifs: enable nfs.disable: off I turned node2 off. Just to make sure i have not network bottle neck and that it will not replicate for my first benchmarks. My first test with bonnie on my local raw disk of node1 gave me 130MB/sec write speed. Then i did the same test on my cluster dir /data: 130MB/sec Then i did the write test in a freshly installed Debian 7 vm: 10MB/sec This is terrible and i wonder why?! My tests where made with: bonnie++ -u root -s <double mem) -d <dir> Here are my bonnie results: http://oi62.tinypic.com/20aara0.jpg Since node2 is turned off, this cant be a network bottle neck. Any ideas? Thanks, Mario