Re: qemu-kvm: Unsolicited boot from net

[Marcelo Tosatti <mtosatti@redhat.com>]

On Thu, Nov 12, 2009 at 06:29:16PM +0100, Jan Kiszka wrote:
> Marcelo Tosatti wrote:
> > On Thu, Nov 12, 2009 at 01:29:37PM +0100, Jan Kiszka wrote:
> >> Hi Marcelo,
> >>
> >> since merge 2fb0744e0d qemu-kvm always tries to boot from network first
> >> when using default options. Upstream does not show this behavior.
> > 
> > Did you install the updated roms after this commit?
> > 
> > commit ec9f735638b6380361387fb49060f6712cb27602
> > Author: Anthony Liguori <aliguori@us.ibm.com>
> > Date:   Fri Oct 30 16:44:26 2009 -0500
> > 
> >     Update gpxe roms to have BANNER_TIMEOUT=0
> >     
> >     Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
> 
> I ran a complete & fresh mkbuilddir-configure-make-install cycle to
> exclude this. Moreover, the above change is actually not related to
> triggering the netboot but to wait for potential input of the user.

Right.

> Looking closer: It's actually still pcbios that is used by my
> installation - shouldn't this be Seabios now?

My understanding is that Seabios should get more testing with qemu-kvm
(other than the cpu hotplug debate). Gleb/Avi would know for sure.

Now whether pcbios option rom supports gpxe properly i don't know, maybe
that is the root cause for the problem (yes, qemu-kvm loads gpxe and
attempts to boot from the network first, the above commit only removes
the annoying multi-second delay).

CC'ing people with some clue.