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RE: [Xen-users] Xen Installation on Fedora



Your final goal may be implying you don’t want a Dom0.  You have to have aDom0 to run Xen.  You can either install Fedora (or as Fajar suggested, CentOS, assuming your hardware isn’t too new for it), or you can install something like XCP or XenServer, which have their own more barebones Dom0s (but may require VGA, I am not familiar with them).  I would recommend installing to the USB drive (the same as Fajar suggested) instead of installing to something else and trying to make the USB drive behave correctly after the fact, but you could do a minimal install and then use yum to install Xen, or you could do a minimal install and use yum to install the necessary compilation tools to compile the latest version.  Assuming you are running 64-bit (and I don’t know why you wouldn’t be), there is also a repo for CentOS that has later versions of Xen than come with it from yum, so you could install them instead of compiling or using the stock versions.  You should be able to find that repo by searching the history of this list, or someone may chime in with the information on it.  All of that having been said, I originally assumed when you said the board was bare, you were implying you wouldn’t even have a video card, that might get more complicated, but would probably technically be outside the scope of Xen discussion, and still require you to have some form of display (attached or otherwise) for the system to think it is outputting to.  I’m not sure what additional advice I could give you, but if neither Fajar’s response or mine has really directly addressed what you want to do, feel free to respond and clarify what you want.

Dustin

 

From: xen-users-bounces@xxxxxxxxxxxxxxxxxxx [mailto:xen-users-bounces@xxxxxxxxxxxxxxxxxxx] On Behalf Of kishore kumar
Sent: Thursday, February 18, 2010 16:30
To: Dustin.Henning@xxxxxxxxxxx
Cc: xen-users@xxxxxxxxxxxxxxxxxxx
Subject: Re: [Xen-users] Xen Installation on Fedora

 

Thanks for the reply.

 

To follow up I have another question.

 

MY FINAL GOAL IS TO RUN THE XEN HYPERVISOR ON A BARE HARDWARE BOARD WITH 2 GUEST OS RUNNING ON TOP OF IT. 

 

I have an Hardware Board with INTEL CPU running on it with VT-x, VT-d and SR-IOV support in the BIOS enabled.  (Its just a bare hardware board with only BIOS, nothing else )

 

I have enabled the USB boot option in the BIOS.

 

Now here is what I want to do.......

 

I make a bootable USB drive and copy the Image of Xen to the USB, plugin the USB key to my Hardware and boot the board with the Hypervisor Image.

 

(Is dd command that I need to use to make the bootable USB and edit the grub file to boot the Xen Image?)

 

How can we do this ?

 

Can anyone let me know if some one has tried this way

Thanks in advance....

 

regards

bk.

On Thu, Feb 18, 2010 at 5:27 AM, Dustin Henning <Dustin.Henning@xxxxxxxxxxx> wrote:

The latest Fedora to come with Xen Dom0 support is 8.  This is because it is a separate kernel.  It can be installed with Yum or possibly with a custom installation, however, F8 has obviously been EOL for some time, so you would probably be better off going with the source you have already downloaded.  Once pvops dom0 becomes mainstream, the next version of Fedora may support it, but I don’t know (might ask in a Fedora mailing list).  Otherwise you would be able to compile a custom kernel that supported it (on whatever version of Fedora came with a new enough version of the kernel to support pvops).  In the meantime, it shouldn’t matter which distro you are using if you are downloading the source, as the appropriate Dom0 kernel will be (downloaded and) compiled during compilation of Xen.  Even if it seems like a way older kernel, it should have a lot of newer drivers backported, so don’t panic and not try it  on account of that.  Disclaimer:  I haven’t actually done a Xen from source install (or if I have, it has been a really long time), but I am pretty sure nothing has changed enough to change the accuracy of my (generally generic) statements above.

Dustin

 

From: xen-users-bounces@xxxxxxxxxxxxxxxxxxx [mailto:xen-users-bounces@xxxxxxxxxxxxxxxxxxx] On Behalf Of kishore kumar
Sent: Wednesday, February 17, 2010 18:59
To: xen-users@xxxxxxxxxxxxxxxxxxx
Subject: [Xen-users] Xen Installation on Fedora

 

Hi,

 

I am new to Xen.  I have few questions in my mind. Can any one of you clarify please.

 

1.       Does Fedora version 10 ,11,12 core has the support for Xen DOM 0 capable kernel support?  Which is the latest Fedora that supports the  Xen DOM 0 kernel support? (Based on this I need to select the correct Fedora version to install for my development environment)

 

2.       Once I install the Fedora, do I need to invoke “yum “ for installing the Virtualization support or the default Fedora installation comes with this.  (MY Hardware has support of Intel VT-x, VT-d and SR-IOV though)

 

3.       I have downloaded latest Xen source  version 3.4.2.  After I build the Xen from the source, where or how does the DOM 0 Linux kernel comes from?  OR is that the Linux (in this case Fedora) that I used for building the Xen becomes the DOM 0 ?  I am confused here.  I read few documents but I could not find how this DOM 0 Linux Guest is created?

 

4.  I am also looking for SR-IOV vf and pf drivers.  Xen-3.4.2 include these?

 

Thanks in advance.

 

regards,

BK.

 

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