Complete backup of Linux install

[Kenneth Burgener]

Gabriel Gunderson wrote:
> Main site:
> http://www.cl.cam.ac.uk/Research/SRG/netos/xen/
> 
> You could do a file backed VM and make snapshots of the file as you need
> to.  Restoring a whole system would be as easy as `cp sys1.backup sys1`.
> Ubiquitous Xen is going to make things sweet for sysadmins.
> 
> Gabe

That is a very interesting idea.  Is there a significant performance 
loss running the VM?