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102 lines
3.5 KiB
HTML
102 lines
3.5 KiB
HTML
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<?xml version="1.0" encoding="UTF-8"?>
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<!DOCTYPE html>
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<html xmlns="http://www.w3.org/1999/xhtml">
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<body>
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<h1>Storage Pool Capabilities XML format</h1>
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<ul id="toc"></ul>
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<h2><a id="Overview">Overview</a></h2>
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<p>The Storage Pool Capabilities XML will provide the information
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to determine what types of Storage Pools exist, whether the pool is
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supported, and if relevant the source format types, the required
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source elements, and the target volume format types. </p>
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<p>The Storage Pool Capabilities XML provides more information than the
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<a href="/html/libvirt-libvirt-host.html#virConnectGetCapabilities">
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<code>virConnectGetCapabilities</code>
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</a>
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which only provides an enumerated list of supported pool types.</p>
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<h2><a id="elements">Element and attribute overview</a></h2>
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<p>A query interface was added to the virConnect API's to retrieve the
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XML listing of the set of Storage Pool Capabilities
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(<span class="since">Since 5.2.0</span>):</p>
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<pre>
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<a href="/html/libvirt-libvirt-domain.html#virConnectGetStoragePoolCapabilities">virConnectGetStoragePoolCapabilities</a>
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</pre>
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<p>The root element that emulator capability XML document starts with is
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named <code>storagepoolCapabilities</code>. There will be any number of
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<code>pool</code> child elements with two attributes <code>type</code>
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and <code>supported</code>. Each <code>pool</code> element may have
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a <code>poolOptions</code> or <code>volOptions</code> subelements to
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describe the available features. Sample XML output is:</p>
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<pre>
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<storagepoolCapabilities>
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<pool type='dir' supported='yes'>
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<volOptions>
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<defaultFormat type='raw'</>
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<enum name='targetFormatType'>
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<value>none</value>
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<value>raw</value>
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...
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</enum>
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</volOptions>
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</pool>
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<pool type='fs' supported='yes'>
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<poolOptions>
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<defaultFormat type='auto'</>
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<enum name='sourceFormatType'>
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<value>auto</value>
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<value>ext2</value>
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...
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</enum>
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</poolOptions>
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<volOptions>
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<defaultFormat type='raw'</>
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<enum name='targetFormatType'>
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<value>none</value>
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<value>raw</value>
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...
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</enum>
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</volOptions>
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</pool>
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...
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</storagepoolCapabilities>
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</pre>
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<p>The following section decribes subelements of the
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<code>poolOptions</code> and <code>volOptions</code> subelements </p>:
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<dl>
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<dt><code>defaultFormat</code></dt>
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<dd>For the <code>poolOptions</code>, the <code>type</code> attribute
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describes the default format name used for the pool source. For the
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<code>volOptions</code>, the <code>type</code> attribute describes
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the default volume name used for each volume.
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</dd>
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<dl>
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<dt><code>enum</code></dt>
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<dd>Each enum uses a name from the list below with any number of
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<code>value</code> value subelements describing the valid values.
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<dl>
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<dt><code>sourceFormatType</code></dt>
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<dd>Lists all the possible <code>poolOptions</code> source
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pool format types.
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</dd>
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<dt><code>targetFormatType</code></dt>
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<dd>Lists all the possible <code>volOptions</code> target volume
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format types.
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</dd>
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</dl>
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</dd>
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</dl>
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</dl>
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</body>
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</html>
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