[Qemu-devel] Re: [PATCHv2] Support for booting from virtio disks

[Anthony Liguori]

On 05/10/2010 10:54 AM, Gleb Natapov wrote:
> On Mon, May 10, 2010 at 10:48:42AM -0500, Anthony Liguori wrote:
>    
> > On 05/10/2010 03:11 AM, Gleb Natapov wrote:
> >      
> > > This patch adds native support for booting from virtio disks to Seabios.
> > >
> > > Signed-off-by: Gleb Natapov<address@hidden>
> > >        
> > A related problem that I think we need to think about how we solve
> > is indicating to Seabios which device we want to boot from
> >
> > With your patch, a user can select a virtio device explicitly or if
> > they use only one virtio device, it will Just Work.
> >
> > However, if a user uses IDE and virtio, or a user has multiple
> > disks, they cannot select a device via -boot.
> >
> >      
> Isn't this problem unrelated to this patch?  I mean if I start qemu with
> two ide devices can I specify from qemu command line which one I want to
> boot from?
>    

That's sort of what I'm asking.  If you compare this approach to 
extboot, extboot provided a capability to select a disk.  I think it can 
be argued though that this isn't a necessary feature to carry over and 
I'm looking for additional opinions on that.

Regards,

Anthony Liguori