XML Format
Objects in the libvirt API are configured using XML documents to allow for ease of extension in future releases. Each XML document has an associated Relax-NG schema that can be used to validate documents prior to usage.
- Domains
- Networks
- Network filtering
- Storage
- Storage encryption
- Capabilities
- Domain capabilities
- Node devices
- Secrets
- Snapshots
Command line validation
      The virt-xml-validate tool provides a simple command line
      for validating XML documents prior to giving them to libvirt. It uses
      the locally instaled RNG schema documents. It will auto-detect which
      schema to use for validation based on the name of the top level element
      in the input document. Thus it merely requires the XML document filename
      to be passed on the command line
    
$ virt-xml-validate /path/to/XML/file