<disk type='file' device='disk'> <driver name='qemu' type='qcow2'/> <source file='/var/lib/libvirt/images/a'> <encryption format='luks'> <secret type='passphrase' uuid='0a81f5b2-8403-7b23-c8d6-21ccc2f80d6f'/> </encryption> <privateData> <nodenames> <nodename type='storage' name='node-a-s'/> <nodename type='format' name='node-b-f'/> </nodenames> </privateData> </source> <backingStore type='file' index='1'> <format type='qcow2'/> <source file='/var/lib/libvirt/images/b'> <privateData> <nodenames> <nodename type='storage' name='node-b-s'/> <nodename type='format' name='node-b-f'/> </nodenames> </privateData> <encryption format='luks'> <secret type='passphrase' uuid='0a81f5b2-8403-7b23-c8d6-21ccc2f80d6f'/> </encryption> </source> <backingStore/> </backingStore> <target dev='vda' bus='virtio'/> <alias name='virtio-disk0'/> </disk>