Upgrading XENHVM 9.0 to 9.1

[Mark Felder]

On Wed, 23 Jan 2013 15:48:29 -0600, Jeroen van der Ham <jeroen at dckd.nl>  
wrote:

> Hi,
>
> Today I started with an upgrade process of my VPS which has been running  
> 9.0 XENHVM almost a full year. I followed the process as outlined on the  
> Handbook[1]. I may have made a mistake in placing back the right old  
> kernel, but a new GENERIC kernel did not get installed.
>
> I was able to boot into the 9.1 system using my old 9.0 XENHVM kernel. I  
> have been trying to fix this, but I keep running into problems:
>
> - I manually downloaded and extracted the 9.1 GENERIC kernel. Booting  
> from that results in a rootmount mismatch (ada0 vs ad0). Just renaming  
> it in /etc/fstab does not seem to be enough, what else would I need to  
> do?

Yes, the GENERIC kernel uses adaX and the XENHVM kernel uses adX. It  
shouldn't be a problem to just change it in the fstab though. I've not yet  
had problems running 9.1 with XENHVM yet.

>
> - I manually built a new 9.1 XENHVM kernel. Booting from that results in  
> the message: "pudna: fpcurthread == curthread xx times" scrolling by.  
> What can I do to fix that?
>

I've not seen this message yet either. Can you provide more details of the  
Xen environment you're hosted on?

> Is there a problem in continuing to run the 9.0 XENHVM kernel with the  
> 9.1 system?
>

This would not be advised. It *may* work, but be warned that you may run  
into strange issues.