Re: [Xen-users] How to initiate a guest installation from the CD-ROM media

[Sadique Puthen <sputhenp@xxxxxxxxxx>]

Ido Levy wrote:
> Thank you Nico for your tip.
>
> As per your advice I enabled the support for the CPU and now I am able to
> use full Virtualization.
>
> I have two more question that I would appreciate your advice:
>
> 1) Is there any performance differences between para and full
> virtualization ?
>   
Yes. Paravirtualization performs around 90 to 99% of bare metal hardware 
whereas full virtualization without para virtualized drivers can only 
perform upto 50 to 60% of real hardware.
> 2) What is better to create the virtual machine as a separate partition or
> as a file ?
>   
If performance is considered, partition or LVM.  If flexibility for the 
guest to be mobile is concerned (Eg, through live migration) then file 
is preferred.
--Sadique
> Thanks
>
> Ido
>
>
>
>                                                                            
>              Nico Kadel-Garcia                                             
>              <nkadel@xxxxxxxxx                                             
>              >                                                          To 
>              Sent by:                  Ido Levy/Haifa/IBM@IBMIL            
>              xen-users-bounces                                          cc 
>              @lists.xensource.         xen-users@xxxxxxxxxxxxxxxxxxx       
>              com                                                   Subject 
>                                        Re: [Xen-users] How to initiate a   
>                                        guest installation from the CD-ROM  
>              06/12/2007 01:10          media                               
>                                                                            
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>
>
> Ido Levy wrote:
>   
> > Hello All,
> >
> > I am pretty new to Xen and I would appreciate you advice on the following
> > issue.
> >
> > I have installed Red Hat 5 Update 1 with the xen kernel and all the
> > required packages for virtualization support.
> > I reached to the point where dom0 is up and running.
> >
> > Now I want to install a guest Linux OS from a customize Linux CD-ROM I
> > have.
> > I tried to use virt-install and virt-manager but the only install
> >     
> location
>   
> > supported is via ftp, http or NFS.
> >
> > Under my restrictions the only way I have to install the required guest
> >     
> is
>   
> > by initiating a CD_ROM installation.
> >
> > How can I do it ?
> >
> >
> > Thanks,
> >
> > Ido
> >
> >
> >     
> You need full virtualization to do a CD installation. Does your CPU
> support that? If so, enable it and select full virtualization instead of
> hte para-virtualization you're currently seeing.
>
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>   

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