Re: [Xen-users] Can't boot after upgrading Xen

[Jonathan Tripathy <jonnyt@xxxxxxxxxxx>]

On 31/05/10 16:15, Jonathan Tripathy wrote:
> Hi Everyone,
>
> I install CentOS 5.5 using the virtualisation option during install. I 
> then wanted to install Xen 4.0
> So I compiled it according to this guide: 
> http://wiki.xensource.com/xenwiki/Xen4.0
> The only thing I changed in grub was the "kernel" parameter to the new 
> xen.gz file that the compiler made.
> Now my system won't boot. I have a Dell H200 RAID controller, and I 
> don't think it can find the drivers for it...
> This confuses me as the only thing I changed was the kernel parameter 
> in grub. The 2 "module" parameters were left the same.
> The hypervisor does seem to boot, and the errors about the controller 
> happened shortly after "Rash Hat nash" is displayed, indicated that 
> the problem lies with the Dom0.
> Any ideas?
>
> Thanks
>
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Just to clarify, I can still get into my system if I manually modify the 
grub "kernel" argument to set it back to the orignal .gz xen image.
I tried to following this guide to install 3.4.2: 
http://www.syntaxtechnology.com/2010/01/upgrade-xen-3-0-on-centos-5-4-x86_64-to-xen-3-4-2/
This time, the error is as follows:

mount: could not find filesystem /dev/root

Then there is a lot of failed setuproot messages, then eventually it 
kernel panics...
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