[Lustre-discuss] speed counters? default quotas?

[Brock Palen]

Yes,  i found these in the pdf documentation, i was using the cached  
copy of manual.lustre.org when the site was down.  Thanks for the  
llstat command though,  i was looking at /proc directly.

Brock Palen
Center for Advanced Computing
brockp at umich.edu
(734)936-1985


On Oct 10, 2007, at 7:21 PM, Andreas Dilger wrote:

> On Oct 09, 2007  09:57 -0400, Brock Palen wrote:
>> Is there a simple way from one host to get some counters data that
>> could be used to gauge the performance lustre is providing under a
>> given load?
>>
>> We would like the following:
>>
>> Read_byte/sec
>> Write_byte/sec
>> Create/sec
>> modify/sec
>>
>> We would prefer to do this form one host (mds?)
>
> There are stats for this, but not in a single location.  The  
> metadata stats
> can be seen with e.g. "llstat -i 1 mds" on the MDS, and the IO  
> stats can be
> seen on the individual OSTs with "llstat -i 1 ost_io".  There are  
> other
> stats counters, please read the documentation.
> http://manual.lustre.org/manual/LustreManual16_HTML/ 
> DynamicHTML-20-1.html
>
>
>> Last is there a way to set a system wide default quota?  Say all
>> users get a 1TByte quota on /scratch by default.
>
> Yes, Lustre supports quotas.   Please see the documentation.
> http://manual.lustre.org/manual/LustreManual16_HTML/ 
> DynamicHTML-09-1.html
>
> Cheers, Andreas
> --
> Andreas Dilger
> Principal Software Engineer
> Cluster File Systems, Inc.
>
>
>