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Re: [libvirt] arbitrary qemu command feature



On 11/20/10 - 02:17:50PM, Bruce Hohl wrote:
> Hello List, I had a problem with the recently added qemu command
> feature (no one on user list could help):
> 
> This feature:
> http://libvirt.org/news.html
> 0.8.3: Aug 4 2010
> Improvements:
> Handle arbitrary qemu command-lines in qemuParseCommandLine.
> Qemu arbitrary command-line arguments.
> 
> Also described here:
> http://www.spinics.net/linux/fedora/libvir/msg26687.html
> [PATCH v4 0/8]: Add arbitrary qemu command-line and monitor commands
> 
> I am using the following libvirt 0.8.3 packages from unbuntu 10.10:
> libvirt-bin 0.8.3-1ubuntu14
> libvirt0 0.8.3-1ubuntu14
> python-libvirt 0.8.3-1ubuntu14
> 
> Example of problem: "$ virsh edit my.xml" refuses to add / will not
> save the following to a domain (for this domain graphics type='sdl')
> using the specified format:
> 
> <qemu:commandline>
>   <qemu:arg value='-ctrl-grab'/>
> </qemu:commandline>
> 
> If I edit and save the xml directly the change is not recognized upon
> start-up of the domain.  That is, I must use ctrl+alt instead of the
> right ctrl for mouse capture.
> 
> Am I missing a library or package needed? Am I using this feature
> correctly? Is there a working example or additional documentation
> somewhere? Any suggestions?

Yes, you are using it incorrectly.  Because this is being done as an XML
namespace, besides adding the XML elements that you want, you also need to
add the namespace to the top of the XML:

<domain type='kvm' xmlns:qemu='http://libvirt.org/schemas/domain/qemu/1.0'>
  ...
  <qemu:commandline>
    <qemu:arg value='-ctrl-grab'/>
  </qemu:commandline>
</domain>

-- 
Chris Lalancette


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