You’ll need to obtain the latest virtio-win-<version>.iso file and copy this to you host, alongside the Windows Server 2012 R2 ISO. Get the former from here: https://fedorapeople.org/groups/virt/virtio-win/direct-downloads/archive-virtio/
Both of these ISO’s will be mounted on the guest as you’ll have to manually load the virtstor drivers during Windows setup.
Use the code below to create the guest machine, this assumes you have copied ISO images to /var/kvm/images/iso:
sudo virt-install \ --name vwinguest1 \ --ram 2048 \ --disk path=/var/kvm/images/vm/vwinguest1.qcow2,size=16,bus=virtio,format=qcow2 \ --disk /var/kvm/images/iso/win2012r2.ISO,device=cdrom,bus=ide \ --disk /var/kvm/images/iso/virtio-win.iso,device=cdrom,bus=ide \ --vcpus 1 \ --os-type windows \ --os-variant win2k12r2 \ --network bridge=br0,model=virtio \ --graphics vnc,listen=0.0.0.0 \ --noautoconsole \ --accelerate \ --console pty,target_type=serial
Now open KVM and connect to the host IP on port 5901 (or the next free VNC port if you have other guests running with VNC graphics on this host).
Use the code below to auto-start the VMs on host start-up:
sudo virsh autostart vwindc1