# create boot drive
sudo qemu-img convert -f raw -O qcow2 redpill-DS918+_7.0.1-42218_b1638389280.img /var/lib/libvirt/images/xpenology-7.0-ds918-boot-qcow2.img
sudo chown qemu:qemu /var/lib/libvirt/images/xpenology-7.0-ds918-boot-qcow2.img
sudo chmod 600 /var/lib/libvirt/images/xpenology-7.0-ds918-boot-qcow2.img
# create data drive (no preallocate to keep size small)
sudo qemu-img create -f qcow2 -o preallocation=off /var/lib/libvirt/images/xpenology-7.0-ds918-data.qcow2 60G
sudo chown qemu:qemu /var/lib/libvirt/images/xpenology-7.0-ds918-data.qcow2
sudo chmod 600 /var/lib/libvirt/images/xpenology-7.0-ds918-data.qcow2
# vm in virtmanager regestrieren
sudo virsh define xpenology-7.0.xml