I have the same problem, that needs to do some extra things, not supported by libvirt API, such as setting up vlan, getting host/guest statistics etc.<br>Right now, I have agent running on the host, which communicating with my management server. My agent is connecting to libvirt daemon on the same machine. In this way, I have to setup agent on each physical machine.<br>
Will libvirt provide the API, like XAPI&#39;s call_plugin (<a href="http://www.xen.org/files/XenCloud/ocamldoc/apidoc.html?c=host">http://www.xen.org/files/XenCloud/ocamldoc/apidoc.html?c=host</a>)? In call_plugin, I can do whatever I want and at any time, which is much flexible than libvirt&#39;s hooks, IMHO.<br>
<br><br><div class="gmail_quote">On Tue, Jun 29, 2010 at 7:03 AM, Radek Hladik <span dir="ltr">&lt;<a href="mailto:radek@eadresa.cz">radek@eadresa.cz</a>&gt;</span> wrote:<br><blockquote class="gmail_quote" style="margin: 0pt 0pt 0pt 0.8ex; border-left: 1px solid rgb(204, 204, 204); padding-left: 1ex;">
I am trying Libvirt synchronous hooks and I would like to ask a question. I would like to use the machine start (qemu+kvm) hook to set up the storage for the machine. I already mentioned my setup in this mailing list but for now it is only important that VM storage is a md raid constructed from iSCSI disks. The VM&#39;s config is using simple file device:<br>

&lt;disk type=&#39;file&#39; device=&#39;disk&#39;&gt;<br>
  &lt;driver name=&#39;qemu&#39; type=&#39;&#39;/&gt;<br>
  &lt;source file=&#39;/dev/disk/by-id/md-uuid-e464a51e:f61e98b4:bfe78010:bc810f04&#39;/&gt;<br>
   &lt;target dev=&#39;vda&#39; bus=&#39;virtio&#39;/&gt;<br>
    &lt;address type=&#39;pci&#39; domain=&#39;0x0000&#39; bus=&#39;0x00&#39; slot=&#39;0x05&#39; function=&#39;0x0&#39;/&gt;<br>
 &lt;/disk&gt;<br>
<br>
Stopping the array from stop hook works perfectly however it seems that on the startup  the storage is checked before the hook is executed. At least I do get errors that the storage file (/dev/disk/by-id/md-uuid-....) does not exist and my hook is not called.<br>

<br>
I would say that I am hooking on wrong places that I should hook on storage startup/shutdown but as far as I know there are no hooks for storage drivers. Are there any plans in this area? Or is there any other way how to do it that I do not see?<br>

<br>
Radek<br><font color="#888888">
<br>
--<br>
libvir-list mailing list<br>
<a href="mailto:libvir-list@redhat.com" target="_blank">libvir-list@redhat.com</a><br>
<a href="https://www.redhat.com/mailman/listinfo/libvir-list" target="_blank">https://www.redhat.com/mailman/listinfo/libvir-list</a><br>
</font></blockquote></div><br>