[Debian] Re: One more request

[Ola Lundqvist]

Hi

The problem is that i do not have an 64 bit computer. And I guess that is quite common. Especially since i386 is the main debian distribution.

I'm asking to have xfs buult as module. Not statically built in. All debian kernels have xfs as module.

/ Ola

Sent from my phone





-----Original Message-----
From: Konstantin Khorenko <khorenko at parallels.com>
To: Kirill Kolyshkin <kir at parallels.com>
Cc: "ola at inguza.com" <ola at inguza.com>, "debian at openvz.org" <debian at openvz.org>
Sent: Wed, 29 Aug 2012 14:08
Subject: Re: One more request

Kirill,

i've checked - xfs module presents in 64bit kernels (both Red Hat's and ours),
xfs support is disabled in 32bit kernels though.

So the simplest (and the most proper) solution here is just to use 64bit OS (and thus - kernel).

Web search gave me the following link:
http://www.mail-archive.com/scientific-linux-users@listserv.fnal.gov/msg08736.html

---
On Tue, Jul 26, 2011 at 7:28 AM, Morten P.D. Stevens
<mstev... at imt-systems.com> wrote:

 > As mentioned, XFS is not supported on 32 bit systems.
 >
 > So you can check that:
 > # cat /boot/config-$(uname -r) | grep XFS
 > (no xfs support on 32 bit)
 >
 > Therefore, I would recommend you to use SL6 x86_64.
 >
 > Otherwise build your own kernel with xfs support. (not recommended)

Yes, use xfs on 32-bit systems with caution because xfs has problems
with 4K stack size (x86_64 uses 8k stacks). This is one main reason
why upstream does not support it.

Another note is that, if you determined to go for xfs on 32-bit, you
can just build the xfs module instead of the whole kernel.

Akemi
---

So i believe it's not a good idea to enable xfs by default in 32bit kernels, people might think that it's ok using it, while as far as i understand there are known issues in this configuration.

If you still want to use xfs under 32bit kernel, please try building the corresponding kernel module.

http://wiki.centos.org/HowTos/BuildingKernelModules

Hope that helps.

--
Best regards,

Konstantin Khorenko,
|| Parallels


On 08/22/2012 01:05 AM, Kirill Kolyshkin wrote:
> Kostya,
>
> Can we enable xfs?
>
> Ola Lundqvist <ola at inguza.com> wrote:
>
>
> Hi again Kir
>
> Thanks a lot for helping me out with the root problem I had. It is
> much appriciated.
>
> However I stumbled on another problem when testing out the RHEL6
> kernels on Debian. It looks like xfs filesystem is not supported.
>
> I filed http://bugzilla.openvz.org/show_bug.cgi?id=2341. Could you
> get someone to look into this to see if xfs can be enabled?
> I would like to be able to test out this kernel on Debian and I do not
> have any system without xfs filesystem... I'm sure quite a lot of people
> running Debian actually use xfs...
>
> Thanks in advance,
>
> // Ola
>
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