KVM

sudo apt-get install qemu-kvm qemu-system virt-manager
sudo vim /etc/libvirt/qemu.conf
user = "root"
group = "root"
# iso file permission
sudo vim /etc/libvirt/qemu.conf
user = "root"
group = "root"

sudo /etc/init.d/libvirt-bin restart
  • http://superuser.com/questions/298426/kvm-image-failed-to-start-with-virsh-permission-denied?answertab=active#tab-top