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Re: [Xen-devel] xen-unstable & pvops on *Suse distro? successful howto?

To: 0bo0 <0.bugs.only.0@xxxxxxxxx>, Pasi Kärkkäinen <pasik@xxxxxx>
Subject: Re: [Xen-devel] xen-unstable & pvops on *Suse distro? successful howto?
From: Keir Fraser <keir.fraser@xxxxxxxxxxxxx>
Date: Thu, 04 Feb 2010 08:11:30 +0000
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On 03/02/2010 19:19, "0bo0" <0.bugs.only.0@xxxxxxxxx> wrote:

> On Wed, Feb 3, 2010 at 11:04 AM, Pasi Kärkkäinen <pasik@xxxxxx> wrote:
>> So the question is why grub doesn't work after you edit /boot/grub/grub.conf
>> ?
>> Sounds like grub.conf gets corrupted/broken.
> if i have two configs in grub -- the PVOPS stanza, as above, and a
> non-pvops stanza -- if i simply change the default to the non-pvops
> stanza, then grub functions normally, the selection menu appears, and
> i can boot with no problems to the non-pvops setup.
> if i repeat, with default to non-pvops, but then *manually* select the
> pvops config & boot it ... *nothing* happens.  the sysem simply stops
> there.  no errors, no console output, no further response.

I haven't seen you post the non-pvops versus pvops grub stanzas for
comparison, but assuming the Xen line in each stanza is identical, it would
be really odd that one gets you Xen boot output and the other doesn't. Are
you setting up Xen to print to serial line in exactly the same way in both

The only thing I could think of, if the GRUB setup is okay, is that Xen is
messing up with the particular size of pvops kernel+initrd you pass to it.
I.e., a bug where Xen fails really early, before setting up serial line
even. That would make you very unlucky since I can't remember when we last
had such an early bug, but it is possible.

 -- Keir

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