Lustre discuss - Oct 2009 - Support for vanilla kernels in lustre servers

Hello everybody,

I am using (now testing) lustre-1.8.0.1 with vanilla kernel 2.6.22.14 on
Ubuntu 8.04 (originally with 2.6.24 kernel), and starting from
lustre-1.8.1, I can not see support for vanilla kernels:

2009-07-31 Sun Microsystems, Inc.
        * version 1.8.1
        * Support for kernels:
         2.6.16.60-0.39.3 (SLES 10),
         2.6.27.23-0.1 (SLES11, i686 & x84_64 only),
         2.6.18-128.1.14.el5 (RHEL 5),
        * Client support for unpatched kernels:
          (see http://wiki.lustre.org/index.php?title=Patchless_Client)
          2.6.16 - 2.6.27 vanilla (kernel.org)
        * Recommended e2fsprogs version: 1.41.6.sun1
        * File join has been disabled in this release, refer to Bugzilla
16929.
        * NFS export disabled when stack size < 8192. Since the NFSv4
export
          of Lustre filesystem with 4K stack may cause a stack overflow.
For
          more information, please refer to bugzilla 17630.
        * ext4 support for RHEL5 is experimental and thus should not be
          used in production.


Does that means that vanilla kernel support for lustre servers is over?

Regards
-- 
Ramiro Alba

Centre Tecnol?gic de Tranfer?ncia de Calor
http://www.cttc.upc.edu


Escola T?cnica Superior d''Enginyeries
Industrial i Aeron?utica de Terrassa
Colom 11, E-08222, Terrassa, Barcelona, Spain
Tel: (+34) 93 739 86 46


-- 
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i es considera que est? net.
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On 2009-10-29, at 06:49, Ramiro Alba Queipo wrote:
> I am using (now testing) lustre-1.8.0.1 with vanilla kernel  
> 2.6.22.14 on
> Ubuntu 8.04 (originally with 2.6.24 kernel), and starting from
> lustre-1.8.1, I can not see support for vanilla kernels:
>
> 2009-07-31 Sun Microsystems, Inc.
>        * version 1.8.1
>        * Support for kernels:
>         2.6.16.60-0.39.3 (SLES 10),
>         2.6.27.23-0.1 (SLES11, i686 & x84_64 only),
>         2.6.18-128.1.14.el5 (RHEL 5),
>
> Does that means that vanilla kernel support for lustre servers is  
> over?

It means that 2.6.22 is very old and spending our tester''s time on this
kernel is not very productive.  The patches are still in CVS.  We are
working on adding in support for FC11 (2.6.30 AFAIR), which is fairly
close to vanilla "stable" series, but it isn''t finished yet.

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

if I were to deploy a system now and I want to do the kernel compile
way, what kernel do you recommend? I prefer using 1.6.7.2 because of
its stability...



On Thu, Oct 29, 2009 at 1:32 PM, Andreas Dilger <adilger at sun.com>
wrote:
> On 2009-10-29, at 06:49, Ramiro Alba Queipo wrote:
>> I am using (now testing) lustre-1.8.0.1 with vanilla kernel
>> 2.6.22.14 on
>> Ubuntu 8.04 (originally with 2.6.24 kernel), and starting from
>> lustre-1.8.1, I can not see support for vanilla kernels:
>>
>> 2009-07-31 Sun Microsystems, Inc.
>> ? ? ? ?* version 1.8.1
>> ? ? ? ?* Support for kernels:
>> ? ? ? ? 2.6.16.60-0.39.3 (SLES 10),
>> ? ? ? ? 2.6.27.23-0.1 (SLES11, i686 & x84_64 only),
>> ? ? ? ? 2.6.18-128.1.14.el5 (RHEL 5),
>>
>> Does that means that vanilla kernel support for lustre servers is
>> over?
>
>
> It means that 2.6.22 is very old and spending our tester''s time on
this
> kernel is not very productive. ?The patches are still in CVS. ?We are
> working on adding in support for FC11 (2.6.30 AFAIR), which is fairly
> close to vanilla "stable" series, but it isn''t finished
yet.
>
> Cheers, Andreas
> --
> Andreas Dilger
> Sr. Staff Engineer, Lustre Group
> Sun Microsystems of Canada, Inc.
>
> _______________________________________________
> Lustre-discuss mailing list
> Lustre-discuss at lists.lustre.org
> http://lists.lustre.org/mailman/listinfo/lustre-discuss
>

On Saturday 31 October 2009, Mag Gam wrote:
> if I were to deploy a system now and I want to do the kernel compile
> way, what kernel do you recommend? I prefer using 1.6.7.2 because of
> its stability...
Sun is very helpful and provide distribution kernels as tar.bz2 on 
their download page:

http://downloads.lustre.org/public/kernels/

So instead of going through the pain to get that yourself from the 
vendors src.rpm Sun already greatly helps (so far I have not 
found an easy how to do that myself, any hint from the guy 
providing the tar files would be highly appreciated).

In a perfect world, this page also would state which kernel is suitable 
for which Lustre version, e.g.

lustre-1.6.7.2	linux-2.6.18-92.1.10.el5.tar.bz2
lustre-1.8.1.1	linux-2.6.18-128.7.1.el5.tar.bz2


Also missing are the .config files. I usually extract these from the kernel 
binary packages - I need to download 150MB to get the 4KB config file *sigh*. 
And better don''t try to change options in non-vanilla kernels, this
very often
fails, because the vendor doesn''t support it and so also
doesn''t test it.

Btw, of course these kernels also work for different distributions, so instead 
of going through the pain to port Lustre to  Ubuntu or Debian kernels, I simply 
started to create debian packages for the RHEL5 kernels

http://www.pci.uni-heidelberg.de/tc/usr/bernd/downloads/lustre/1.6/debs/lustre-clients/1.6.7.2-ddn2/
linux-image-2.6.18-128.7.1.el5_1_amd64.deb
linux-headers-2.6.18-128.7.1.el5_1_amd64.deb


Cheers,
Bernd


PS: Disclaimer: Whatever packages you may find on my home page, I won''t
provide support for these!

-- 
Bernd Schubert
DataDirect Networks

On 2009-10-31, at 11:37, Bernd Schubert wrote:
> Sun is very helpful and provide distribution kernels as tar.bz2 on
> their download page:
>
> http://downloads.lustre.org/public/kernels/
>
> So instead of going through the pain to get that yourself from the
> vendors src.rpm Sun already greatly helps (so far I have not
> found an easy how to do that myself, any hint from the guy
> providing the tar files would be highly appreciated).
>
> In a perfect world, this page also would state which kernel is  
> suitable
> for which Lustre version, e.g.
>
> lustre-1.6.7.2	linux-2.6.18-92.1.10.el5.tar.bz2
> lustre-1.8.1.1	linux-2.6.18-128.7.1.el5.tar.bz2
>
> Also missing are the .config files. I usually extract these from the  
> kernel
> binary packages - I need to download 150MB to get the 4KB config  
> file *sigh*.
> And better don''t try to change options in non-vanilla kernels,
this
> very often
> fails, because the vendor doesn''t support it and so also
doesn''t
> test it.
You can get the config files from CVS, in lustre/kernel_patches/ 
kernel_configs
directory.
> Btw, of course these kernels also work for different distributions,  
> so instead
> of going through the pain to port Lustre to  Ubuntu or Debian  
> kernels, I simply
> started to create debian packages for the RHEL5 kernels
Yes, I also use different kernels on different distros (SLES10 kernel  
on FC6
for instance) without problems.

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