www.itwhy.org/linux/debian7-%E5%AE%89%E8%A3%85-kvm-%E8%99%9A%E6%8B%9F%E6%9C%BA.html
www.storageonline.com.cn/life_work/happy-work/use-virt-install-to-create-kvm-vm-but-failed-to-see-console-output/
http://ntcn.net/blog/?p=5817
https://help.ubuntu.com/community/KVM/Installation
www.server-world.info/en/note?os=Debian_8&p=kvm&f=3
报没有权限时，
blog.csdn.net/thinkandaction/article/details/25222599
报没有default网络时，
http://serverfault.com/questions/534484/libvirt-network-error-no-default-network-device-found