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RE: [Xen-users] new installation of the base operating system

  • To: "Abri Nation" <abrination@xxxxxxxxxxxxxx>, "Nico Kadel-Garcia" <nkadel@xxxxxxxxx>
  • From: "Ross S. W. Walker" <rwalker@xxxxxxxxxxxxx>
  • Date: Sun, 15 Apr 2007 12:17:25 -0400
  • Cc: xen-users@xxxxxxxxxxxxxxxxxxx
  • Delivery-date: Sun, 15 Apr 2007 09:16:18 -0700
  • Importance: normal
  • List-id: Xen user discussion <xen-users.lists.xensource.com>
  • Priority: normal
  • Thread-index: Acd/SJJ0RRPgAwwfTUajmTzu0fvciwAMHQ7Q
  • Thread-topic: [Xen-users] new installation of the base operating system

If your guests are all 32-bit HVMs there should be no problem going from 32-bit to 64-bit. There would be a problem if you had 64-bit HVMs and wanted to go from 64-bit to 32...
If you have 32-bit DomUs you will need to make sure you have a version of Xen that has the 32bit-on-64bit patches, I believe OpenSUSE has a version of 3.0.4 with these, or you will have to run Xen unstable or wait for 3.0.5.

From: xen-users-bounces@xxxxxxxxxxxxxxxxxxx [mailto:xen-users-bounces@xxxxxxxxxxxxxxxxxxx] On Behalf Of Abri Nation
Sent: Sunday, April 15, 2007 6:27 AM
To: Nico Kadel-Garcia
Cc: xen-users@xxxxxxxxxxxxxxxxxxx
Subject: Re: [Xen-users] new installation of the base operating system

2007/4/15, Nico Kadel-Garcia <nkadel@xxxxxxxxx>:
Abri Nation wrote:
> Thank you for your answer!
> The images are fully virtualized.
> An update is not possible, cause now i use FC6 i386, and i have to
> install "centos5 with 64 Bit support" (could this change from i386 to
> 64Bit support be also a problem for the images to start?)... i made
> already a backup of /etc/xen/* and for the images. do i need to attend
> something else?
Switching from 32-bit to 64-bit "en vivo" this way is begging for pain.
Backing up your images and Xen setup is *good*. I've seen reports of
people running 32-bit VM's successfully on 64-bit OS's, but I've
personally had serious trouble with running non-rebuilt apps from 32-bit
environments in a 64-bit environment. (Wacom devices, in particular.)

Why do you have to update your server to 64-bit but not your VM's?

64-bit was the request of the boss for the base operating system, but i could install i386 also. 
the  instantaneous installation was actually not for active service. but now the virtual machines 
are running, and i have to switch the operating system cause we do no use fedora on our linux servers at all. 

also you do not recommend to install 64-bit? than i will install i386, i think there would not be such a big difference,or?

thank you Nico!

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