Storage volume encryption XML format
Storage volume encryption XML ¶
Storage volumes may be encrypted, the XML snippet described below is used to represent the details of the encryption. It can be used as a part of a domain or storage configuration.
      The top-level tag of volume encryption specification
      is encryption, with a mandatory
      attribute format.  Currently defined values
      of format are default and qcow.
      Each value of format implies some expectations about the
      content of the encryption tag.  Other format values may be
      defined in the future.
    
      The encryption tag can currently contain a sequence of
      secret tags, each with mandatory attributes type
      and uuid.  The only currently defined value of
      type is passphrase.  uuid
      refers to a secret known to libvirt.  libvirt can use a secret value
      previously set using virSecretSetValue(), or, if supported
      by the particular volume format and driver, automatically generate a
      secret value at the time of volume creation, and store it using the
      specified uuid.
    
"default" format ¶
      <encryption format="default"/> can be specified only
      when creating a volume.  If the volume is successfully created, the
      encryption formats, parameters and secrets will be auto-generated by
      libvirt and the attached encryption tag will be updated.
      The unmodified contents of the encryption tag can be used
      in later operations with the volume, or when setting up a domain that
      uses the volume.
    
"qcow" format ¶
      The qcow format specifies that the built-in encryption
      support in qcow- or qcow2-formatted volume
      images should be used.  A single
      <secret type='passphrase'> element is expected.  If
      the secret element is not present during volume creation,
      a secret is automatically generated and attached to the volume.
    
Example ¶
      Here is a simple example, specifying use of the qcow format:
    
      <encryption format='qcow'>
         <secret type='passphrase' uuid='c1f11a6d-8c5d-4a3e-ac7a-4e171c5e0d4a' />
      </encryption>
      