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10af1f23f0
The correct attribute name is 'format', not 'type'. https://bugzilla.redhat.com/show_bug.cgi?id=1139910
68 lines
3.0 KiB
XML
68 lines
3.0 KiB
XML
<?xml version="1.0" encoding="UTF-8"?>
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<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
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<html xmlns="http://www.w3.org/1999/xhtml">
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<body>
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<h1>Storage volume encryption XML format</h1>
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<ul id="toc"></ul>
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<h2><a name="StorageEncryption">Storage volume encryption XML</a></h2>
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<p>
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Storage volumes may be encrypted, the XML snippet described below is used
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to represent the details of the encryption. It can be used as a part
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of a domain or storage configuration.
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</p>
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<p>
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The top-level tag of volume encryption specification
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is <code>encryption</code>, with a mandatory
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attribute <code>format</code>. Currently defined values
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of <code>format</code> are <code>default</code> and <code>qcow</code>.
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Each value of <code>format</code> implies some expectations about the
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content of the <code>encryption</code> tag. Other format values may be
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defined in the future.
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</p>
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<p>
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The <code>encryption</code> tag can currently contain a sequence of
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<code>secret</code> tags, each with mandatory attributes <code>type</code>
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and <code>uuid</code>. The only currently defined value of
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<code>type</code> is <code>passphrase</code>. <code>uuid</code>
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refers to a secret known to libvirt. libvirt can use a secret value
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previously set using <code>virSecretSetValue()</code>, or, if supported
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by the particular volume format and driver, automatically generate a
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secret value at the time of volume creation, and store it using the
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specified <code>uuid</code>.
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</p>
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<h3><a name="StorageEncryptionDefault">"default" format</a></h3>
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<p>
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<code><encryption format="default"/></code> can be specified only
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when creating a volume. If the volume is successfully created, the
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encryption formats, parameters and secrets will be auto-generated by
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libvirt and the attached <code>encryption</code> tag will be updated.
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The unmodified contents of the <code>encryption</code> tag can be used
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in later operations with the volume, or when setting up a domain that
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uses the volume.
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</p>
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<h3><a name="StorageEncryptionQcow">"qcow" format</a></h3>
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<p>
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The <code>qcow</code> format specifies that the built-in encryption
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support in <code>qcow</code>- or <code>qcow2</code>-formatted volume
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images should be used. A single
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<code><secret type='passphrase'></code> element is expected. If
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the <code>secret</code> element is not present during volume creation,
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a secret is automatically generated and attached to the volume.
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</p>
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<h2><a name="example">Example</a></h2>
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<p>
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Here is a simple example, specifying use of the <code>qcow</code> format:
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</p>
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<pre>
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<encryption format='qcow'>
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<secret type='passphrase' uuid='c1f11a6d-8c5d-4a3e-ac7a-4e171c5e0d4a' />
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</encryption></pre>
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</body>
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</html>
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