Description of problem:

I am trying to pass an extra command line parameter to qemu-kvm to allow kernel debugging through gdb.  This is a '-s' option for the qemu-kvm command line.  I am unable to pass this parameter using virsh

Version-Release number of selected component (if applicable):

libvirt-0.8.3-2

How reproducible:

Always

Steps to Reproduce:
1. Determine the correct XML to use for specifying command line parameters for qemu-kvm. This is done using virsh domxml-from-native:

$ virsh domxml-from-native qemu-argv test

This generates an XML file with the following snippet:

  <qemu:commandline>
    <qemu:arg value='-s'/>
  </qemu:commandline>


2.  Add the snippet to the guest VMs XML using virsh edit and save the edited XML.
3.  Dump the XML file using virsh dumpxml
  
Actual results:

The XML file does not contain the newly-added command line parameter.  When the VM is started, the qemu-kvm command line does not include the -s option.

Expected results:

The XML file contains the newly-added command line parameter and qemu-kvm starts up with the extra command line parameter.


Additional info: