Hello,
thank you for your kind and helpful answers.
No including the "bugs" e-mail address in my first reply
was my mistake, I just didn't notice, that there was more than
one address. Shouldn't happen again :-).
On 24.09.2021 15:50, Andy Smith wrote:
Hello,
On Fri, Sep 24, 2021 at 03:33:21PM +0200, Hans van Kranenburg wrote:
The smallest amount of work to initially get your VM going again is to
only install the 64 bit kernel and keep running a 32 bit user land.
Yep, I have a few 32-bit PV domUs that I run as 64-bit just the
kernel, works great.
That information helps me a lot!
The process to fully change from a 32 to 64 system (in place) is
called
'cross grading'. I found instructions at
https://wiki.debian.org/CrossGrading
I never did this myself, though.
I've done it lots of times but for any non-trivial host you have to
pretty much be a Debian expert to know how to handle the many
problems that dpkg will encounter. It takes longer than
reinstalling and a mistake breaks everything. Not recommended.
I also did it with a few machines some time ago, but I remembered
how cumbersome it was. That's why I asked about a "simple" method :-).
I won't do it (cross grading), if not forced to do so.
It should be as simple as changing type="pv" to type="pvh" in the
config
file. In Debian, using PVH this is possible since Buster. Also, using
the xen variant of grub2 (grub-xen and grub-xen-host) is possible.
I can confirm that I have a lot of Debian stretch domUs running PVH
but you do need to install backports kernel in the domU. The 4.9.x
stretch kernelis too old. You need the 4.19.x one from
stretch-backports. They boot fine for me with pvhgrub.
This, too, helps me a lot. Thank you. All of the machines in question
here, are on buster or newer - although by upgrading. So no stress
here.
Cheers,
Andy
Thanks to both of you, Hans and Andy,
Ruediger
--
Dr. H.-R. Oberhage
Mail: Univ. Duisburg-Essen E-Mail: oberh...@uni-duisburg-essen.de
Fakultaet fuer Physik ruedi...@theo.physik.uni-duisburg-essen.de
