Re: [Xen-users] Error: ... Backend device not found.

[Nico Kadel-Garcia <nkadel@xxxxxxxxx>]

David Morris wrote:
> Couple additional suggestions 
> a. From your grub data, it appears you are using software raid on the dom0 ... might be that
>    your configured devices need to be mdX devices to match your kernel, etc.
> b. you may need a 'root=/dev/hda2 rw' or some such in your config if it isn't 
> there
> c. it appears from the config fragment that this is a paravirt installation?
>
> This sounds like a problem I encountered when I tried to use virt-manager to 
> create a paravirt RHEL5 domU on RHEL5 dom0. I've fought so many alligators over 
> the past week that I'm not sure I found a solution or a way around it ....
>
> I think I concluded that there was a fundamental disconnect between the 
> virt-manager PV setup and reality ... what I did that worked:
>   a. with virt-manager, create an HVM guest (it worked)
>   b. upgrade to Xen 3.1 
>   c. follow the steps in my post of last night to clone the HVM guest as a para virt guest
> btw ... you can check the number of loop devices in use with the 'losetup -a' 
> command. When I had my difficulties, I was using lvm devices so loop devices 
> was not the issue.
>   
virt-manager of RHEL 5 is already sadly out of date. If you grab and 
recompile the one from Fedora 7, it seems to be a good update and more 
usable. Or use virt-install, that has better logging and some options 
not in virt-manager. Then use virt-manager if necessary to access the 
console.
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