[Fedora-xen] Fedora 11 Xen domU grub.conf timeout=0 problem with pygrub / patch

[Pasi Kärkkäinen]

On Wed, Aug 19, 2009 at 07:46:26PM +0300, Pasi Kärkkäinen wrote:
> On Wed, Aug 19, 2009 at 06:30:06PM +0300, Pasi Kärkkäinen wrote:
> > On Wed, Aug 19, 2009 at 10:09:15AM +0000, Mark McLoughlin wrote:
> > > On Wed, 2009-08-19 at 01:34 +0300, Pasi Kärkkäinen wrote:
> > > 
> > > > #boot=/dev/xvda
> > > > default=0
> > > > timeout=0
> > > > splashimage=(hd0,0)/grub/splash.xpm.gz
> > > > hiddenmenu
> > > > title Fedora (2.6.29.4-167.fc11.i686.PAE)
> > > >         root (hd0,0)
> > > >         kernel /vmlinuz-2.6.29.4-167.fc11.i686.PAE ro
> > > >         root=/dev/mapper/vg_f11domu-lv_root rhgb quiet
> > > >         initrd /initrd-2.6.29.4-167.fc11.i686.PAE.img
> > > > 
> > > > 
> > > > timeout=0 looks suspicious.. so I changed it to 5. 
> > > > After that domU comes up OK on its own..
> > > > 
> > > > I changed timeout back to 0, and pygrub gets stuck again.
> > > > 
> > > > Is this a bug of pygrub, or a broken default grub.conf timeout value of F11?
> > > 
> > > timeout=0 should be fine, it sounds like a pygrub bug
> > > 
> > 
> > Indeed. 
> > 
> > RHEL5.3 version of pygrub seems to work with F11 domU, but the upstream Xen
> > 3.4.1 pygrub doesn't. The version numbers are the same (both are 0.6).
> > 
> > I'll make a diff and try to figure out the fix for this..
> > 
> 
> Attached is a patch to make upstream Xen 3.4.1 pygrub work with F11 domU grub.conf timeout=0
> default setting. Works for me. Change is taken from the RHEL5.3 version of pygrub.
>

I just noticed that with the default version of pygrub of Xen 3.4.1 you need to
go to "xm console <f11domU>" to choose the kernel, and after that it boots up normally..

The patch I sent takes care of auto-selecting the kernel when timeout=0.
 
-- Pasi

> 
> > Are you guys planning to post the RHEL5 pygrub fixes upstream? 
> > 
> > -- Pasi
> > 
> > --
> > Fedora-xen mailing list
> > Fedora-xen at redhat.com
> > https://www.redhat.com/mailman/listinfo/fedora-xen

> --- pygrub-xen341	2009-08-17 22:22:29.000000000 +0300
> +++ pygrub	2009-08-19 18:39:17.000000000 +0300
> @@ -447,7 +447,7 @@
>                      # So we may come here even after a key has been pressed.
>                      # Check both timeout and mytime to avoid exiting
>                      # when we shouldn't.
> -                    if timeout != -1 and mytime >= int(timeout):
> +		    if mytime >= int(timeout):
>                          self.isdone = True
>                          break
>              else:

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