[Twg] [Discuss] no TWG today (6/14/2012)

[Andreas Dilger]

On 2012-06-14, at 8:26 AM, John Carrier wrote:
> 2)      2011 Required Rates and Capacities
> The table was created as part of our 2011 requirements investigation.  I saved it as an appendix so that work wouldn’t be lost.  Some of the Board members want us to update the table to reflect current limits, since some of the data there is no longer accurate.  For example, the Lustre 2.2 column was a best guess in 2011 and could be updated with real data now that 2.2 is released. 

Actually, I added the 2.2 table after 2.2 was released.  It wasn't in the original 2011 version of the table.

> 3)      Lack of explicit recommendations
> Last year there was broad agreement that metadata performance was the single category requiring the greatest effort.  This year there were several categories fairly equally represented in the members’ top 10 picks.  Our recommendation was to have OpenSFS initiate projects in each of the top four categories so that we can make incremental progress on all fronts this year rather than choosing just one category and waiting until next year to address the other categories. 
> 
> However, if the Board prefers to focus on just one category, then "File system availability and robustness" was the very clear winner this year, as the voting spreadsheet shows (http://goo.gl/Lqg7s).  Some of the LNET work could be embodied under this umbrella since LNET contributes to availability and robustness of Lustre.   I have asked the Board to clarify if they require this refinement.

Having only a single option for development will unnecessarily restrict the features that could be developed.  Last year there were a number of different projects that were worked on, in different (though related) areas of the code (client for statahead, ldiskfs/libcfs/ptlrpc for SMP scaling, and MDS for DNE).

I would recommend that at least the #3-ish feature (#1 if going by total votes) "OST migration/rebalancing" be included in the recommendation to the board.  This was the only feature on every board member's list, including the community seat.


Cheers, Andreas
--
Andreas Dilger                       Whamcloud, Inc.
Principal Lustre Engineer            http://www.whamcloud.com/