Lustre discuss - Aug 2009 - Vanilla 2.6.27.31 + Lustre server 1.8.1?

Is it safe to use the SLES11 Lustre patches on the 2.6.27.31 vanilla 
kernel source tree?

I tried using quilt to patch the vanilla kernel and the only patch that 
seem to fail is md-raid5 and I don''t need md-raid5 support on my Lustre
servers.

Thanks
Nirmal

On Aug 31, 2009  15:12 -0500, Nirmal Seenu wrote:
> Is it safe to use the SLES11 Lustre patches on the 2.6.27.31 vanilla 
> kernel source tree?
> 
> I tried using quilt to patch the vanilla kernel and the only patch that 
> seem to fail is md-raid5 and I don''t need md-raid5 support on my
Lustre
> servers.
We haven''t tested it...  That said, upstream distros change their
kernels much less from mainline than they used to, so it isn''t
likely to break completely.

Note that the "raid5" patch is also applicable to "raid6"
(they share the
the same code).  This is for MD software RAID only.

Cheers, Andreas
--
Andreas Dilger
Sr. Staff Engineer, Lustre Group
Sun Microsystems of Canada, Inc.

Nirmal Seenu wrote:
> Is it safe to use the SLES11 Lustre patches on the 2.6.27.31 vanilla 
> kernel source tree?
> 
Hi Nirmal,

which attachments from https://bugzilla.lustre.org/show_bug.cgi?id=18668
did you use? 
Did you add any patches from https://bugzilla.lustre.org/show_bug.cgi?id=15976

TIA, Ralf
[...]

-- 
        Ralf Utermann
_____________________________________________________________________
        Universit?t Augsburg, Institut f?r Physik   --   EDV-Betreuer
        Universit?tsstr.1             
        D-86135 Augsburg                     Phone:  +49-821-598-3231
        SMTP: Ralf.Utermann at Physik.Uni-Augsburg.DE         Fax: -3411

I didn''t add any of those patches. I was just trying to build the 
official 1.8.1 release with 2.6.27.31.

I was able to build the 2.6.7.31 kernel without any problem even though 
the patches for md-raid5 patches failed.

However, I was not able to build Lustre against the above kernel. There 
was no errors in the configure step but for the warning about quota will 
not work on OSTs > 4TB. When I tried to ''make'' it failed
really quickly
at the point where it was trying to apply ext4 patches.

Nirmal

Ralf Utermann wrote:
> Nirmal Seenu wrote:
>> Is it safe to use the SLES11 Lustre patches on the 2.6.27.31 vanilla 
>> kernel source tree?
>>
> Hi Nirmal,
> 
> which attachments from https://bugzilla.lustre.org/show_bug.cgi?id=18668
> did you use? 
> Did you add any patches from
https://bugzilla.lustre.org/show_bug.cgi?id=15976
> 
> TIA, Ralf
> [...]
>

On Thu, Sep 03, 2009 at 07:14:44AM -0500, Nirmal Seenu
wrote:
> However, I was not able to build Lustre against the above kernel. There 
> was no errors in the configure step but for the warning about quota will 
> not work on OSTs > 4TB. When I tried to ''make'' it
failed really quickly
> at the point where it was trying to apply ext4 patches.
same for me. ldiskfs patches for SLES11 do not match vanilla 2.6.27.31. RHEL5
patches for ext4 are much closer but do not match either.

-- 
Luk?? Hejtm?nek

On Sep 03, 2009  17:39 +0200, Lukas Hejtmanek wrote:
> On Thu, Sep 03, 2009 at 07:14:44AM -0500, Nirmal Seenu wrote:
> > However, I was not able to build Lustre against the above kernel.
There
> > was no errors in the configure step but for the warning about quota
will
> > not work on OSTs > 4TB. When I tried to ''make'' it
failed really quickly
> > at the point where it was trying to apply ext4 patches.
> 
> same for me. ldiskfs patches for SLES11 do not match vanilla 2.6.27.31.
RHEL5
> patches for ext4 are much closer but do not match either.
Copying the SLES ext4 sources over may allow you to build.

Cheers, Andreas
--
Andreas Dilger
Sr. Staff Engineer, Lustre Group
Sun Microsystems of Canada, Inc.