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Re: [Xen-users] debian lenny 3.2.1 doesn't boot, livexen boots just fine

To: Gabor Szilagyi <szilagyi@xxxxxxxxxxxx>
Subject: Re: [Xen-users] debian lenny 3.2.1 doesn't boot, livexen boots just fine
From: Pasi Kärkkäinen <pasik@xxxxxx>
Date: Thu, 28 Jan 2010 18:26:10 +0200
Cc: Martin Kraus <lists_mk@xxxxxxxxxxx>, xen-users <xen-users@xxxxxxxxxxxxxxxxxxx>, Thiago Camargo Martins Cordeiro <thiagocmartinsc@xxxxxxxxx>
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On Thu, Jan 28, 2010 at 11:11:50AM -0500, Gabor Szilagyi wrote:
> -----BEGIN PGP SIGNED MESSAGE-----
> Hash: SHA1
> 
> Pasi Kärkkäinen wrote:
> > On Wed, Jan 27, 2010 at 09:41:02AM -0500, Gabor Szilagyi wrote:
> >> -----BEGIN PGP SIGNED MESSAGE-----
> >> Hash: SHA1
> >>
> >>
> >>
> >> Martin Kraus wrote:
> >>> On Tue, Jan 26, 2010 at 05:34:59PM -0200, Thiago Camargo Martins Cordeiro 
> >>> wrote:
> >>>> Hi!
> >>>>
> >>>> 1- Get the ISO of the Debian Lenny 5.0 amd64 from http://debian.org;
> >>>> 2- Install your Debian into your own partition scheme (LVM over RAID);
> >>>> 3- Reboot into your new fresh Debian Lenny; upgrade it;
> >>>> 4- * GRUB1 is still the default in Lenny, verify it;
> >>>> 5- Install the Xen with the command: "aptitude install
> >>>> xen-linux-system-2.6.26-2-xen-amd64";
> >>>> 6- Reboot into you new dom0.
> >>> Thanks for the effort but how does this solve the problem that xen doesn't
> >>> start? I'm already running virtual hosts on that machine and I can't rip
> >>> all of this apart just to get stuck with unbootable system again. 
> >>>
> >>> What I need is to find out what the problem is and then start ripping 
> >>> stuff
> >>> apart. I've tried to compile xen myself, versions 3.2, 3.3, 3.4, hg tip, 
> >>> all
> >>> get stuck at some time during xen boot. Until I've tried the live cd, I
> >>> thought that it's some incompatibility with my hardware but since the 
> >>> live cd is
> >>> debian lenny on iso and it works fine, I have to look for the part that 
> >>> causes
> >>> xen to freeze.
> >>>
> >>> Since there is only bios, grub and xen running in turn before the machine
> >>> gets stuck I'd say that the problem is in one of these systems.
> >>>
> >>> I'll try to find out something about grub and then I'm going after kvm 
> >>> before
> >>> I decide to scratch the whole machine.
> >> Hi Martin,
> >>
> >> I am having the same problem ... ever since I installed grub2 I can not
> >> get xen to boot. I was told it is possible but yet to see someone
> >> writing it down how. Tried the "new" syntax, put dummy=dummy as first
> >> cmd line argument, even compiled the root=/... in the kernel nothing works.
> >>
> >> I just get Panic on CPU 0 ... and stuck dump.
> >>
> > 
> > Please see:
> > http://wiki.xensource.com/xenwiki/XenCommonProblems
> > 
> > section:
> > "Booting Xen with GRUB2 fails?"
> 
> Thanks for the tip ... I tried all those no change :
> 
> here what I have currently in gurb.cfg both recommendation is use the
> file name twice and use dummy=dummy

No, you don't use both of them.

The problem is that grub2 destroys the *first* parameter, 
so if you add the filename twice, that already is the extra 
first parameter, so no need for dummy anymore.

Or then don't add the filename, but use dummy.
You just need *one* extra parameter there, as the first parameter.

See the working example from here:
http://old.nabble.com/Strange-interaction-from-grub2-and-XEN-td26464067.html


> 
> I am trying both the newest patched kernel and the stuck kernel coming
> with 3.4.2 source ... both compile without error (I pretty sure I got
> the config right for xen). Actually I can boot the 2.6.31.6-xen-2 on
> bare metal (strangely not the 2.6.18.8 !!)
> 

xenlinux kernels (2.6.18.8) don't support running as baremetal.
pv_ops Xen kernel do support that.

> But got the same error ... so I strongly believe that the xen-3.4.2.gz
> part crashes already with grub2 ..
> 
> I tried several other combination from grub> prompt pretty much the same
>  CPU 0 panic and the numbers after (sometime sligthly different dump )
> 

We really need to see the full console output to say what's wrong.

-- Pasi


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