Comprehensive Debian (poziom).pdf

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Comprehensive Debian Wheezy Xen
Tutorial
Table of Contents
The following guide is comprised of my personal documentation and excessive
filtering for human consumption. It details the series of steps I took to successfully
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install and compile a custom Linux Kernel, Xen 4.2 unstable, and run three virtual
machines to perform unique tasks all on a single physical computer.
To achieve the desired functionality, I used IOMMU for PCI Passthrough with a
multimedia operating system, granting complete access to a graphics card for GPU
Acceleration.
I am a college student, not a trained professional, and I am sharing this documentation
for educational purposes. Blind use of this document for a production environment in a
business setting would be ill-advised.
To quickly summarize my experiences, I decided to try Xen and began researching in
early January 2012.
I purchased equipment in March 2012, and began what I thought would take "at most
two weeks".
By late April I finally had a ( mostly ) functional system.
I have been fine tuning the system and my process since then to produce this guide for
others.
The purpose of this guide is to turn a 6 month project into a series of steps that can be
reproduced inside the time frame of 1-2 days.
I wanted a single physical computer, that could handle three computers worth of
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separated activities at all times, including these four specifics:
Router/Firewall (PFSense)
DNS & Web Development (Debian Squeeze)
Application Development (Debian Wheezy)
Multimedia & Gaming (Windows 7)
I investigated alternative software, including VMWare's ESXi and Citrix's XenServer.
I had come from a VMWare platform having used both VMware Server 2 and VMWare
Workstation 8 for the same key objectives previously but with a Windows Host, subject
to Windows Updates which let to my investigation.
ESXi was easy to install, but missing numerous drivers for hardware components. I
quickly ruled it out as I wanted a home-use system, and there was no convenient or
well-documented method to installing or even launching a virtual machine from their
on-server interface.
Citrix's XenServer was easily my favorite of the options, it's design made for a great
user experience. Everything was easy to find and do. However it came with a
minimum price tag of $1000, and if I wanted PCI passthrough for graphics cards
$2500. This was beyond my reach as a college student.
I chose Xen since it had support for my hardware, was a free open-source project, and
had a great community with lots of activity.
Things you Will Need:
Compatible Hardware
ATI Graphics Card
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Motherboard with UEFI & VT-d & Onboard Graphics
Latest Ubuntu Live DVD
Debian Wheezy Beta1 (Or Newer) Installer
nVidia Cards can be made to work, with extensive patching, in Windows XP and
supposedly Windows 8 Preview, for more information visit David Techer's blog .
If you plan to pass your graphics card to a virtual machine, you will need either a
second graphics card, onboard graphics, or a second computer to manage your Dom0
system and install virtual machines over VNC.
UEFI compatible boot DVD will save you an undocumented step for setting up a UEFI
boot loader.
Xen is picky, different hardware may yield different results, both at compile time and
runtime. If you want to save yourself some hassle, here is my hardware list and some
suggestions to avoid:
Motherboard:
ASRock Z68 Extreme4 Gen3
CPU:
Intel Core i2600
RAM:
12GB 1333Mhz Corsair XMS (2x2G + 2x4G)
Boot Disk:
240GB OCZ Vertex 3
GPU:
ATI Radeon HD 6870
LAN:
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Onboard Broadcom BCM57781
PCIe EXPI9301CTBLK
Hardware and Configurations to Avoid:
NF200 Chipsets are not IOMMU compatible
nVidia Graphics Cards
RAID5 yields horrible performance
NF200 is a PCI Switch for motherboards sporting SLI and CrossFire, avoid it if you
want be able to use those PCI slots for passthrough.
These instructions are for an Intel CPU and ASRock UEFI Motherboard, and may vary
depending on your manufacturer as well as your choice of CPU. If you are unfamiliar
with motherboard configuration, you may want to watch the video for a visual walk
through.
Before starting reset your CMOS so you have a clean slate to work from.
List of key settings:
Turn Legacy USB 3.0 off
Turn on VT-x and VT-d
Set drives to ACHI Mode
Change default video to Onboard
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