[Libvir] How to deploy Virtual Machine via libvirt

[Richard W.M. Jones]

Omer Khalid wrote:
> 
> Hi,
> 
> I have been using libvirt in my python software for a while just to get 
> deployed domain information. Usually I create a xen configuration file 
> with all the parameters and trigger a "xm create -f file" command to 
> deploy the VM.
> 
> The problem I have noticed since some time is that as this command is 
> forwarded from Python to Xen, and no error code is returned; I loose 
> track if the domain deployment request fails which is rare but happens.
> 
> So I thought to use libvirt for virtual machine deployment, and wondered 
> if there are python bindings which I could use. I also try to look up 
> for some kind of small example code to deploy a VM via libvirt on the 
> libvirt site but didn't succeed to find. Can any body help me out with 
> their experience?

There are low-level calls within libvirt, but if you want to install a 
new guest (eg. from an ISO) it's best to use virt-install. 
(http://hg.et.redhat.com/virt/applications/virtinst--devel, 
http://virt-manager.et.redhat.com/download.html)

Code examples can be found in virt-manager.

If you already have the guest and just want to start it up, then call 
virDomainDefineXML followed by virDomainCreate in libvirt.

Rich.

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