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Re: [Xen-devel] Areca RAID with Xen 3.4 and Linux 2.6.32 dom0

To: Jeremy Fitzhardinge <jeremy@xxxxxxxx>
Subject: Re: [Xen-devel] Areca RAID with Xen 3.4 and Linux 2.6.32 dom0
From: Florian Wagner <f_wagner@xxxxxxxxxx>
Date: Fri, 7 May 2010 10:54:34 +0200
Cc: xen-devel@xxxxxxxxxxxxxxxxxxx, Konrad Rzeszutek Wilk <konrad.wilk@xxxxxxxxxx>
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> On 05/06/2010 06:25 AM, Florian Wagner wrote:
> > I'm trying to boot Xen 3.4.1 with a Linux 2.6.32-12 with dom0
> > support from Debian unstable (linux-image-2.6.32-12-xen-amd64).
> I'm not exactly sure what kernel version this is.  Have you tried a
> xen.git kernel?

As I understand it, it's pv_ops dom0 support backported to Debians
2.6.32 kernel. It intends to replace the old 2.6.26 from lenny which
uses forward ports of the Xen patches against 2.6.18.

> It looks like the kernel is having some problem mapping the device
> into its address space, but it isn't clear where the problem lies.
> Things to try:
> [...]
>    3. try a newer version of Xen (3.4.2, 3.4.3-rc or 4.0.0)

Sorry typo in my first mail. The version I'm using is 3.4.2 (from
Debian testing, extended with one of the patches from 3.4.3 to make it
work with Grub2 on i386).

Using 3.4.3-rc (http://xenbits.xensource.com/xen-3.4-testing.hg)
vanilla the system boots.

Seems to me that the Debian kernel I'm trying requires the IOAPC stuff
(and thus hypervisor >=3.4.3) that is mentioned on XenParavirtOps in
the wiki. Sadly package dependencies on the kernel were not set up to
require the hypervisor from unstable (which would have been 3.4.3-rc3).

Florian Wagner

Florian Wagner
Abteilung EDV
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Syscomp Biochemische Dienstleistungen GmbH
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