Old Ubuntu .deb?

[kentborg-KwkGvOEf1og at public.gmane.org (Kent Borg)]

Richard Pieri wrote:
> https://launchpad.net/bugs/665182
> https://launchpad.net/bugs/655392
>
> The second has some fixup examples.  In a nutshell you can either convert your qcow2 disk images to raw disk images or use "format=qcow2" as a disk parameter.

Ah!

Well, I managed to find the old .debs, and made it work again. Next I 
take a few deep breaths, and maybe I am brave enough to upgrade again 
and do the XML edit...OK, I'm ready.

I did the "upgrade" again, and it is again broken. Stick in the 
"format=qcow2", and...I can't figure out the syntax...google about 
looking for examples, finally find the example I needed in the script 
intended for automatically migrating these XML files from the default 
disk format to specified formats.


Lesson: If running kvm for real work, have a staging server for testing 
such things.

(To save money maybe the hot spare can be pulled out of 'hot' mode and 
used for the staging. If it seems to work with dummy guest VMs, live 
migrate a test guest VM, and if that works live migrate the least 
critical real VM, and if that works migrate the next most critical VM, etc.)


Thanks!

-kb


P.S. BTW, old debs can be found at repos.um.ac.ir...but I am wondering 
whether before upgrades the paranoid should do a hardlink copy of 
/var/cache/apt/archives to a backup directory.