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Segmentation fault
diff -u docs/formatdomain.html.in docs.new/formatdomain.html.in
--- docs/formatdomain.html.in 2010-05-27 11:35:33.995122526 +0600
+++ docs.new/formatdomain.html.in 2010-05-27 13:36:27.362623268 +0600
@@ -517,10 +520,30 @@
<dt><code>driver</code></dt>
<dd>If the hypervisor supports multiple backend drivers, then the optional
<code>driver</code> element allows them to be selected. The <code>name</code>
- attribute is the primary backend driver name, while the optional <code>type</code>
- attribute provides the sub-type. The optional <code>cache</code> attribute
+ attribute is the primary backend driver name (for example, "qemu"),
+ while the optional <code>type</code> attribute provides the sub-type.
+ For qemu, possible values are: "raw", "qcow", "qcow2", "vmdk" and some other.
+
+ <p>The optional <code>cache</code> attribute
controls the cache mechanism, possible values are "default", "none",
- "writethrough" and "writeback". <span class="since">Since 0.1.8</span>
+ "writethrough" and "writeback".</p>
+
+ <p>Writethrough caching means that the host
+ page cache will be used to read and write data but write notification will
+ be sent to the guest only when the data has been reported as written by the
+ storage subsystem.</p>
+
+ <p>Writeback caching will report data writes as completed as soon as
+ the data is present in the host page cache. This is safe as long as you trust your host.
+ If your host crashes or loses power, then the guest may experience data corruption.</p>
+
+ <p>The host page cache can be avoided entirely with <code>cache='none'</code>.
+ This will attempt to do disk IO directly to the guests memory.</p>
+
+ <p>As said in qemu-kvm-0.12.3 manual: Some block drivers perform badly with <code>cache='writethrough'</code>, most notably,
+ qcow2. If performance is more important than correctness, <code>cache='writeback'</code>
+ should be used with qcow2.</p>
+ <span class="since">Since 0.1.8</span>
</dd>
<dt><code>encryption</code></dt>
<dd>If present, specifies how the volume is encrypted. See
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