Re: [Xen-users] Separate kernel on domU's

[eva <evammg@xxxxxxxxx>]

On 24 February 2012 22:55, Luke S. Crawford <lsc@xxxxxxxxx> wrote:
> On Wed, Feb 22, 2012 at 12:28:51PM +0100, eva wrote:
>> Hello,
>>
>> I am still learning about Xen.. I am trying to setup Xen hypervisor
>> for the first time. I was reading the howto here:
>>
>> http://www.howtoforge.com/paravirtualization-with-xen-4.0-on-debian-squeeze-amd64
>>
>> and I stopped here:
>>
>> "(To use the default Ubuntu kernel instead of Debian's Xen kernel in
>> the guest, you can also comment out the kernel and initrd lines in
>> /etc/xen-tools/xen-tools.conf.)"
>

[...]

Thanks, your answer was very useful to me.

I thought in xen kernels work separately, as it's shown in this
representation....

https://community.emc.com/servlet/JiveServlet/showImage/38-3466-30315/Xen.png

but now it seems that you can set it up to share a few things. At this
point I was quite surprised.

I just want to understand how xen works.. so why would you share the
kernel or parts of the kernel with another dom? Must be a good reason
to do it, I think.

Using the same initrd looks fine to me, but I using other parts of the
kernel.. it looks like that you must really know what you doing or you
will end up with a mess after an upgrade, for example.

So in what cases would you do it and why?

Fajar tried to explain it a little, but I still don't fully understand it ..

Thank you

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