[et-mgmt-tools] KVM, Virt-manager and virtio

Cole Robinson crobinso at redhat.com
Wed Nov 12 14:34:28 UTC 2008

Arutyunyan Ruben wrote:
> Hello everyone,
> i just recently installed KVM(on Ubuntu 8.04) and virt-manager was of great help when i had to deploy few Win 2003 guests. The only problem i have now is networking. I use bridged network and its fine xept one thing - its 100 mbit. What i need is 1 Gbs link(my network card allows that). Seems to fully utilise nw card i need to install virtio network device, then drivers for it from Windows and be a happy. I found this how-to http://www.linux-kvm.com/content/tip-how-setup-windows-guest-paravirtual-network-drivers , but i dont understand how to make virtio device available for guest if i dont start machine manually via command line, but want to incorporate it into xml.
> Any help will be greatly appreciated. Thanks in advance.
> Ruben

virt-manager doesn't yet support adding a virtio nic to
an existing guest, but we will soon. You'll have to make
the changes via the command line.

What you will want to do is:

- stop your vm
- virsh dumpxml YOURVM > xml

- edit xml, and add:

  <model type='virtio'/>

  to the <interface> block.

- virsh define xml
- start the vm


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