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Re: [Xen-users] Xen Kernel cant find root device - 4 days and no progres

To: Robert Dunkley <Robert@xxxxxxxxx>
Subject: Re: [Xen-users] Xen Kernel cant find root device - 4 days and no progress :(
From: Pasi Kärkkäinen <pasik@xxxxxx>
Date: Mon, 17 Aug 2009 17:26:14 +0300
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On Mon, Aug 17, 2009 at 03:03:21PM +0100, Robert Dunkley wrote:
> Hi Pasi,
> 
> 
> I'm trying to build a Dom0 kernel with Solarflare NIC pass-through support 
> (It allows direct access to a single NIC from multiple DomUs), the standard 
> Centos 
> kernels don't seem to include this but the 2.6.18 Xen kernel and newer 
> standard Linux 
> kernels have the required options in menu config.
> 

Ok.

> I have considered shifting to Ubuntu but this is less than ideal because I'm 
> not at all 
> familiar with Ubuntu and other software we use is not easy to setup or 
> supported under Ubuntu.
> 

Yep.

> I will sort out a serial console to the system and copy and paste the output 
> to the list.
> 

That helps to figure out the problem.

-- Pasi

> 
> Thanks,
> 
> 
> Rob
> 
> -----Original Message-----
> From: Pasi Kärkkäinen [mailto:pasik@xxxxxx] 
> Sent: 17 August 2009 14:50
> To: Robert Dunkley
> Cc: Xen User-List
> Subject: Re: [Xen-users] Xen Kernel cant find root device - 4 days and no 
> progress :(
> 
> On Mon, Aug 17, 2009 at 01:10:35PM +0100, Robert Dunkley wrote:
> > I'm still trying to compile my own Xen kernel under Centos 5.2 but boot
> > always fails with a cannot find volume group "VolGroup00". I have tried
> > using both the xen.org 3.41 with 2.6.18.8-xen kernel and using 2.6.30.2
> > with patch and Xen 3.41. The error is the same, I really don't know what
> > causes it. I am compiling in support for LVM and device mapper etc. Does
> > anyone know what might cause this? Any hints would be much appreciated.
> > 
> > Compile of standard 2.6.30.4 kernel works fine.
> > 
> > I'm considering swapping to Ubuntu or Slackware just avoid this compile
> > issue.
> > 
> 
> This doesn't sound like compilation issue at all.
> It sounds like initrd or configuration issue.
> 
> Some questions:
> 
> - You're trying to build/compile a custom dom0 kernel? or are you talking 
> about domU kernel?
> - Can't you use the centos 5.3 kernel-xen?
> - Please paste your boot/console log so we can figure out why your boot 
> fails. 
>   If it's dom0 kernel, then you need to set up a serial console to capture 
> the boot/console output.
> 
> -- Pasi
> 
> > Thanks,
> > 
> > Rob
> > 
> > The SAQ Group
> > 
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