Configuration

Configuration is most conveniently done with GUI tool "Virtual Machine Manager" installed on a ubuntu desktop. For command line, use "virsh edit [domain]" to edit the XML configuration file.

References

Domain XML format reference:

http://libvirt.org/formatdomain.html

Stefan Hajnoczi: How to pass QEMU command-line options through libvirt:

http://blog.vmsplice.net/2011/04/how-to-pass-qemu-command-line-options.html

XML Configuration File

Placed under /etc/libvirt/qemu

Edit using "virsh edit [domain]"

Refer to the complete reference for various configurations.

In addition, can also pass direct argument to emulator's commandline. This is done by:

1. Change "<domain>" line to

<domain type='kvm' xmlns:qemu='http://libvirt.org/schemas/domain/qemu/1.0'>

2. Under <domain> tag, at the bottom of the whole configuration file, following examples below:

<qemu:commandline>    <qemu:arg value='-option-rom'/>    <qemu:arg value='path/to/my.rom'/> </qemu:commandline>

It is also possible to add environment variables to the QEMU invocation:

<qemu:commandline>

   <qemu:env name='MY_VAR' value='my_value'/>

</qemu:commandline>