Xen users - Aug 2009 - Xen Kernel cant find root device - 4 days and no progress :(

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.

Thanks,

Rob

The SAQ Group

Registered Office: 18 Chapel Street, Petersfield, Hampshire GU32 3DZ
SAQ is the trading name of SEMTEC Limited. Registered in England & Wales
Company Number: 06481952

http://www.saqnet.co.uk AS29219

SAQ Group Delivers high quality, honestly priced communication and I.T. services
to UK Business.

Broadband : Domains : Email : Hosting : CoLo : Servers : Racks : Transit :
Backups : Managed Networks : Remote Support.

ISPA Member


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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
> 
> Registered Office: 18 Chapel Street, Petersfield, Hampshire GU32 3DZ
> SAQ is the trading name of SEMTEC Limited. Registered in England &
Wales
> Company Number: 06481952
> 
> http://www.saqnet.co.uk AS29219
> 
> SAQ Group Delivers high quality, honestly priced communication and I.T.
services to UK Business.
> 
> Broadband : Domains : Email : Hosting : CoLo : Servers : Racks : Transit :
Backups : Managed Networks : Remote Support.
> 
> ISPA Member
> 
> 
> _______________________________________________
> Xen-users mailing list
> Xen-users@lists.xensource.com
> http://lists.xensource.com/xen-users
_______________________________________________
Xen-users mailing list
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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@iki.fi] 
> 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
> > 
> > Registered Office: 18 Chapel Street, Petersfield, Hampshire GU32 3DZ
> > SAQ is the trading name of SEMTEC Limited. Registered in England &
Wales
> > Company Number: 06481952
> > 
> > http://www.saqnet.co.uk AS29219
> > 
> > SAQ Group Delivers high quality, honestly priced communication and
I.T. services to UK Business.
> > 
> > Broadband : Domains : Email : Hosting : CoLo : Servers : Racks :
Transit : Backups : Managed Networks : Remote Support.
> > 
> > ISPA Member
> > 
> > 
> > _______________________________________________
> > Xen-users mailing list
> > Xen-users@lists.xensource.com
> > http://lists.xensource.com/xen-users
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