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Re: [Xen-users] 2.6.32 Kernel Debian

  • To: Pasi Kärkkäinen <pasik@xxxxxx>
  • From: Martinx - ジェームズ <thiagocmartinsc@xxxxxxxxx>
  • Date: Thu, 18 Mar 2010 16:41:01 -0300
  • Cc: Markus Hochholdinger <Markus@xxxxxxxxxxxxxxxxx>, xen-users@xxxxxxxxxxxxxxxxxxx
  • Delivery-date: Thu, 18 Mar 2010 12:47:06 -0700
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Thank you guys for the clarification!
I can't wait to see the mainline Linux with dom0 support! ^_^

On 18 March 2010 16:02, Pasi KÃrkkÃinen <pasik@xxxxxx> wrote:
On Thu, Mar 18, 2010 at 01:43:30PM -0300, Martinx - ?$B%8%'!<%`%: wrote:
> Â ÂHi!
> Â ÂÃ The Xen and the Linux from [1]http://xen.org is a rock
> Â Âsolid.
> Â ÂÃ I REALLY do not understand why the Debian Xen Team just don't pack the
> Â ÂLinux from [2]http://xen.org for Squeeze dom0, if there are
> Â Âno stable options available out there.

linux-2.6.18-xen from xen.org doesn't have the latest security updates in it,
so it would be extra work for distribution kernel maintainers to manage
security updates for another/extra kernel.

> Â ÂÃ What is the point in make a hard work to get a unstable system? As the
> Â ÂLenny (dom0) and the Hardy (dom0), for example?!? No one actually are
> Â Âusing it!

Distributions like Debian don't have dedicated full-time developers that can
troubleshoot, debug and fix bugs.

So Debian wants to rely on the long-term supported 2.6.32 kernel for Squeeze,
because it will be included in other distributions aswell, so the patches
for bugs are much easier to get, since there are much more developers working and
maintaining the kernel.

> Â ÂÃ I never use in a production environment, the Xen packaged from some
> Â Âdistribution. They always have a bug here and there... Then I am forced to
> Â Âmanually compile Xen and Linux from [3]xen.org and all my problems go away
> Â Âas magic!

Yeah, linux-2.6.18-xen is stable, if it supports your hardware.

> Â ÂÃ And if Debian Squeeze works seamlessly with the Xen and the Linux
> Â Â2.6.18.8-xen, I believe that the maintainers of the Xen in the Debian
> Â ÂSHOULD only pack the sources from [4]xen.org WITHOUT any significant
> Â Âmodifications. Of course, only when you want a dom0.

The upcoming Xen 4.0.0 release from xen.org will be using pv_ops dom0 kernel (2.6.32) as a default!

linux-2.6.18-xen will still work with xen 4.0.0 hypervisor, but linux-2.6.18-xen is not the default or
recommended kernel for Xen 4.0.0+ anymore.

> Â ÂÃ Some will say that the Linux is prehistoric but, then why not
> Â Âuse the same kernel used in the project XCP, the
> Â Âkernel- for the Squeeze? It is
> Â Âstable too and much more recent than the 2.6.18!

It's again about the maintenance, and the amount of work needed to do it.
Debian wants to ship just a single kernel!

-- Pasi

> Â ÂRegards,
> Â ÂThiago
> Â Â2010/3/18 Markus Hochholdinger <[5]Markus@xxxxxxxxxxxxxxxxx>
> Â Â ÂHello,
> Â Â ÂAm 17.03.2010 um 20:53 Uhr schrieb Martinx - Ã*ÅÃ*ÂÃ*ÅÃ* Ã*Â
> Â Â Â<[6]thiagocmartinsc@xxxxxxxxx>:
> Â Â Â> Yeah!!! Great news!
> Â Â Â>
> Â Â ÂÃ [7]http://packages.qa.debian.org/l/linux-2.6/news/20100317T161016Z.html
> Â Â Â> Ã linux-image-2.6.32-4-xen-686 - Linux 2.6.32 for modern PCs, Xen dom0
> Â Â Â> support
> Â Â Â> Ã linux-image-2.6.32-4-xen-amd64 - Linux 2.6.32 for 64-bit PCs, Xen
> Â Â Âdom0
> Â Â Â> support
> Â Â Â> Ã It will be a paravirt_ops or the SUSE port forward?!
> Â Â Âi'm not sure, it rumours it will be a pv_ops kernel. But till now i've
> Â Â Âfound
> Â Â Âno definite information about that.
> Â Â ÂAnother info about the kernel:
> Â Â Â[8]http://womble.decadent.org.uk/blog/debian-linux-packages-the-big-bang-release
> Â Â Â--
> Â Â Âgreetings
> Â Â ÂeMHa
> References
> Â ÂVisible links
> Â Â1. http://xen.org/
> Â Â2. http://xen.org/
> Â Â3. http://xen.org/
> Â Â4. http://xen.org/
> Â Â5. mailto:Markus@xxxxxxxxxxxxxxxxx
> Â Â6. mailto:thiagocmartinsc@xxxxxxxxx
> Â Â7. http://packages.qa.debian.org/l/linux-2.6/news/20100317T161016Z.html
> Â Â8. http://womble.decadent.org.uk/blog/debian-linux-packages-the-big-bang-release

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