[Pvfs2-developers] Separate data and metadata storage paths -

[Sumit Narayan]

This is pretty interesting.

I am just curious, can't this be done by running two servers on the
same node and treating one as metadata server and other as I/O server
- each having their own data space. It might add just a little extra
load on the node. I am guessing PVFS takes some advantage of putting
metadata and data on same node. Can someone fill me in as to what they
are.

Thanks,
Sumit.



On Thu, May 28, 2009 at 5:17 PM, Sam Lang <slang at mcs.anl.gov> wrote:
>
> Hi David,
>
> I don't see any problems with putting that in future releases once its
> ready.  It would be great if you could update the developers list with your
> planned changes, and possibly send along patches as you have them, allowing
> everyone to provide input, etc.
>
> -sam
>
> On May 28, 2009, at 5:10 PM, David Bonnie wrote:
>
>> Everyone -
>>
>> Nick and I are working at LANL this summer and one of our projects
>> involves modifying PVFS2 to use separate storage paths for metadata versus
>> file data on a single PVFS2 server.  The goal is to be able to place the
>> metadata database files on faster drives (SSDs, RAM drives, etc) to speed up
>> metadata operations while still being able to service data requests from a
>> standard HDD.  Does anyone forsee a problem with this being pushed into the
>> main distribution once it is finished?
>>
>> Thanks,
>>
>> - Dave
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