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Re: [Xen-users] Xen 3.2.0 -> Newer kernel and more..

Hi,

You are right about my over-angry attitude :)

I know that XEN dosen't suppoert newer kernel's then 2.6.18, but i really don't care if that works. Actually im pretty happy for this kernel, it's stable and it's working great on my production environment.

I have setup two physical server's what each has two DomU's. (2xfront and 2xnode.) That setup is 95% faulty tolerant and load-balanced.

This project would be ready to production, but i can't get OCFS2 work with DRBD. There's a bug in OCFS2 hertbeat. There's patch available but it's only on 2.6.17 and 2.6.20. So I was thinking that it would be easier to change kernel then modify those patches.

If anyone has any experience working with DRBD + OCFS2 and Xenified kernel please report :) If and when i get this project done I will make good "Load-balanced and faulty tolerant LAMP environment using Xen and Ultramonkey"

But this problem is looking to be too hard for me to solve.

So once again. If someone knows howto apply that 'OCFS2 add_bio patch' to Xenified 2.6.18 kernel i would be more then happy little admin.
Or howto to patch 2.6.20 with Dom0 support.

Regard,
Kalle




On Thu, 24 Jan 2008, Emre Erenoglu wrote:

Hi Kalle,

I think you're a bit over-angry. So I suggest taking a walk outside in some
park to calm down and then come here again for questions.

About documentation, I agree with you. It's unfortunately a bit trial and
error.

About kernel, newer kernels than 2.6.18 are not supported by XEN. These are
distribution specific. There's no official patch for kernels above 2.6.18.
So I suggest using 2.6.18 until Xen supports a higher version kernel.

I agree with you in the sense that this kernel is pretty old now. But it
works good for server deployments and it's pretty stable, which is more
wanted for virtualization goals than having some more hardware support and
some other new features.

Hope that Xen developers move to a newer kernel in the near future, or
possibly integrate it upstream to all kernels somehow.

DomU is currently supported above 2.6.23, but you won't get fb or some other
xen specific devices. Just vbd (disks) and network.

For mercurial, I had no issues in my Ubuntu 7.10 system to download and
build xen 3.2.0 along with the kernel. just make a "hg clone" to the
mercurial repository address. Then when you say "make world" on your system
(if your system has all packages necessary for compiling kernels and stuff),
it will download the kernel 2.6.18 automatically, patch it automatically and
start compiling. It may ask for one or more questions during the kernel
configuration though.

I had no issues whatsoever about this procedure, always went smoothly even
in test builds.

Best regards,

Emre


On Jan 24, 2008 12:11 PM, Kalle <kalle@xxxxxxxxxxx> wrote:

Hi,

Firts of all i have to say that Xen is nice project and i propably can't
live without it.
But that's about all positive I have on my mind.

Where are all recent documents?
Why does those document have to hide so badly that normal human can't find
those.
Or is it like that there are no document's and i have to try -> fail ->
try etc...
This is really starting to piss me off right now..

I want to compile newer kernel then 2.6.18 with dom0 support.
Im using Xen 3.2.0 what ships with absolutily outdated / crap
documentation.
I can't find any information with google that is relevant.
All outdated and crap.

The install of this version also lacks.
It has no idea howto download the kernel from mercurial.
I have tested that on Debian Etch And Debian Lenny.
I needed to manually download that kernel.


So to questions..

- Is there somewhere Xen patches for newer then 2.6.18 kernel? If where?
- What is the "support" in main kernel line for Xen? Only DomU?
- And again -> Where is those god damn patches for vanilla kernel?

No, im not interested to backporting some shitty Fedora kernel's.
No, im not familiar to customize old patches to work newer kernel's.

Actually im not even so mad to Xen, just little.
Im actually really fucking pissed that this project is not supported good
enough in Debian.
I don't want to change distro to something like Fedora or Ubuntu just to
get newer kernel.
There has to be way to port those patches to vanilla kernel, right?
I just want to find thise patches.

And could someone please delete the whole wiki, because that information
is so outdated that no one does anything with that.

Sorry my bad English and sorry about the way I present my thougs..

Regards,
Kalle

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--
Emre Erenoglu
erenoglu@xxxxxxxxx


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