virt-install ubuntu 12.04 with virtio

virt-install_ubuntu12

mkdir -p /data/kvm/images/ubuntu12/
qemu-img create -f qcow2 /data/kvm/images/ubuntu12/boot.img 10G

virt-install --connect qemu:///system \
 --arch=x86_64 \
 --accelerate \
 --name ubuntu12 \
 --ram=1024 \
 --vcpus=2 \
 --hvm \
 --os-type=Linux \
 --os-variant=virtio26 \
 --disk path=/data/kvm/images/ubuntu12/boot.img,format=qcow2,size=10 \
 --network bridge=virbr0 \
 --nographics \
 --keymap ja \
 --location http://ftp.riken.jp/Linux/ubuntu/dists/precise/main/installer-amd64/ \
 --extra-args='console=tty0 console=ttyS0,115200n8'