libvirt/tests/storagevolxml2argvdata/qcow2-nobacking-convert-prealloc-compat.argv

qemu-img convert -f raw -O qcow2 \
-o preallocation=metadata,compat=0.10 \
/var/lib/libvirt/images/sparse.img /var/lib/libvirt/images/OtherDemo.img