Use virtio for kvm acceleration

Kvm uses virtio to accelerate kvm-hdaubuntu-server.img-cdromNETKVM-20081229.iso-m1024-enable-kvm-netnic, modelvirtio-netuserkvm-hdaubuntu-server.img-m1024-bootc-netnic, mod... kvm uses virtio to accelerate kvm-hda ubuntu-server.img-cdrom NETKVM-20081229.iso-m 1024-enable-kvm-net nic, model = virtio-net user kvm-hda ubuntu-server.img-m 1024-boot c-net nic, model-virtio-net userkvm:-net nic, model-virtio: invalid parameter 'model-virtio 'kvm-hda ubuntu-server.img-m 1024-boot c-net nic, model = virtio-net user this unsuccessful root @ ubuntu: /home/hypercube/kvm # kvm file = ubuntu-server.img, if = virtio, boot = on-m 1025 kvm:-m 1025: cocould not open disk image file = ubuntu-server.img, if = virtio, boot = on: No such file or directory kvm-drive files = ubuntu-server.img, if = virtio, boot = onqemu-kvm: boot = on | off is deprecated and will be ignored. future versions will reject this parameter. please update your scripts. kvm-drive files = ubuntu-server.img, if = virtio-m 2048