12.2. Virtualization. There are multiple virtualization solutions, each with its own pros and cons.
This book will focus on Xen, LXC, and KVM, but other noteworthy implementations include the following: Xen is a “paravirtualization” solution. It introduces a thin abstraction layer, called a “hypervisor”, between the hardware and the upper systems; this acts as a referee that controls access to hardware from the virtual machines. However, it only handles a few of the instructions, the rest is directly executed by the hardware on behalf of the systems.
The main advantage is that performances are not degraded, and systems run close to native speed; the drawback is that the kernels of the operating systems one wishes to use on a Xen hypervisor need to be adapted to run on Xen. Let's spend some time on terms. Using Xen under Debian requires three components: The hypervisor itself. . # mv /etc/grub.d/20_linux_xen /etc/grub.d/09_linux_xen # update-grub Voilà! # xm console testxen[...] Premiers pas avec Xen sous Debian. Si l'on devait faire un palmarès des technologies à la mode, Xen – et la virtualisation en général – arriveraient certainement très bien placés.
Honte à moi (?) , c'est pourtant un domaine que j'avais laissé de côté. Voilà qui est chose réparée avec cet article où je décris mes premiers pas de Xenologue. Si vous cherchez donc comment installer l'hyperviseur Xen sur une distribution Debian/Lenny, ou encore comment utiliser les xen-tools pour rapidement créer une première machine virtuelle, je vous propose de suivre mes pas dans la suite de cet article. Vocabulaire. HOWTO: Windows XP running under Xen 3.0 on Ubuntu Dapper Drake. All comments owned by their poster.
Name: sherman Email: orinoko at gmail dot com Time: 1/7/06 - 21:45:36 I take it that people who have Mobile Centrino chips (like used in the Dell Inspiron 9300) will be left out and cannot use Xen? I was very tempted to do this... I am sick of having a wasted 20gb partition 'dedicated' to xp... Long live Ubuntu. Name: Eric the Red Email: not at home dot com Time: 2/7/06 - 05:58:54 "I haven't tested the stability that heavily because my laptop has a tendency to restart while running Xen. " Yeah, I'd say it isn't very stable then.
Name: Chris Email: chris13610 at yahoo dot co dot uk Time: 2/7/06 - 11:32:41 Followed the install on the HowtoForge.com site, then folowed these instructions. All works up until I type 'xm create winxp'. Spec: Dell 430SC, 512Mb RAM, Pentium D 920, Ubuntu Desktop 64bit Version 6.06, Xen 3.02 Any idea where I should get this file from? Thanks for the howto.
Name: Joel Email: Time: 2/7/06 - 17:02:52 Did you install Xen 3.0.2 ? Thanks! Another GNU/Linux sysadmin blog.