[Lustre-discuss] Future of lustre 1.8.3+

Guy Coates gmpc at sanger.ac.uk
Wed May 26 06:59:53 PDT 2010


On 21/05/10 10:08, Christopher Huhn wrote:
> Hi Ramiro,
> 
> Ramiro Alba Queipo wrote:
>> On Thu, 2010-05-20 at 10:16 -0600, Andreas Dilger wrote:
>>   
>>> The SLES11 kernel is at 2.6.27 so it could be usable for this. Also, I 
>>>     
>> Ok, I am getting
>> http://downloads.lustre.org/public/kernels/sles11/linux-2.6.27.39-0.3.1.tar.bz2
>>
>> but, please. Where can I get a suitable config file to apply both for
>> servers and clients?

One thing to watch out for in your kernel configs is to make sure that:

CONFIG_SECURITY_FILE_CAPABILITIES=N

otherwise you will run into:

https://bugzilla.lustre.org/show_bug.cgi?id=21439

(each write call causes 2 getxattr calls, which will pound your MDS into
the ground).

The SLES11, debian/lenny and ubuntu kernels all have this feature set,
so if you are building clients against those kernels, you may be in
trouble.


Cheers,

Guy

-- 
Dr. Guy Coates, Informatics System Group
The Wellcome Trust Sanger Institute, Hinxton, Cambridge, CB10 1HH, UK
Tel: +44 (0)1223 834244 x 6925
Fax: +44 (0)1223 496802


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