add vdb to vm

add-vdb.sh

#!/bin/bash

pushd /var/lib/libvirt/images &> /dev/null

for vm in $(virsh list --all | grep win2008 | awk '{print $2}')
do
    disk_path="${vm}-vdb.qcow2"
    if [ ! -e ${disk_path} ]; then
        qemu-img create -f qcow2 ${disk_path} 200G
    fi
    if virsh domblklist ${vm} | grep -w vdb; then
        continue
    fi
    virsh attach-disk ${vm} --driver qemu --subdriver qcow2 \
        --source /var/lib/libvirt/images/${disk_path} --target vdb --persistent
done