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storage: expose volume meta-type in XML

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I got annoyed at having to use both 'virsh vol-list $pool --details'
AND 'virsh vol-dumpxml $vol $pool' to learn if I had populated
the volume correctly.  Since two-thirds of the data present in
virStorageVolGetInfo() already appears in virStorageVolGetXMLDesc(),
this just adds the remaining piece of information, as:

<volume type='...'>
  ...
</volume>

* docs/formatstorage.html.in: Document new <volume type=...>.
* docs/schemas/storagevol.rng (vol): Add it to RelaxNG.
* src/conf/storage_conf.h (virStorageVolTypeToString): Declare.
* src/conf/storage_conf.c (virStorageVolTargetDefFormat): Output
the metatype.
(virStorageVolDefParseXML): Parse it, for unit tests.
* tests/storagevolxml2xmlout/vol-*.xml: Update tests to match.

Signed-off-by: Eric Blake <eblake@redhat.com>
This commit is contained in:
Eric Blake
2013-11-19 13:14:54 -07:00
parent 4d52b465bd
commit 1b5c8d4cbc
20 changed files with 52 additions and 20 deletions
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10
docs/formatstorage.html.in
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@@ -283,14 +283,18 @@
<h2><a name="StorageVol">Storage volume XML</a></h2>
<p>
A storage volume will be either a file or a device node.
The storage volume XML format is available <span class="since">since 0.4.1</span>
A storage volume will generally be either a file or a device
node; <span class="since">since 1.2.0</span>, an optional
output-only attribute <code>type</code> lists the actual type
(file, block, dir, or network), which is also available
from <code>virStorageVolGetInfo()</code>. The storage volume
XML format is available <span class="since">since 0.4.1</span>
</p>
<h3><a name="StorageVolFirst">General metadata</a></h3>
<pre>
&lt;volume&gt;
&lt;volume type='file'&gt;
&lt;name&gt;sparse.img&lt;/name&gt;
&lt;key&gt;/var/lib/xen/images/sparse.img&lt;/key&gt;
&lt;allocation&gt;0&lt;/allocation&gt;