[cdwg] Draft of updated roadmap slide

[Christopher J. Morrone]

With no objections, the web page has been updated with the new roadmap 
slide that I proposed:

   http://lustre.opensfs.org/community-lustre-roadmap/

The next step is a public announcement about the 2.4->2.5 change.  here 
is my first draft.  Please comment and suggest improvements.  I will 
plan to blast this announcement to various mailing lists by the end of 
my day on Monday, August 19th.

Subject: Community Roadmap update, Realignment on 2.5

Background
----------

The Lustre community has banded together to work on the development of 
the Lustre source code.  As part of that effort, we regularly discuss 
the roadmap for major Lustre releases.  We have developed a schedule of 
major releases that occur every six months.

We recognize, however, that many organizations need a branch of Lustre 
that they can run for much longer periods of time than six months.  To 
that end we collectively decided that we would target the Lustre 2.4.0 
feature release to begin a side branch of Lustre to receive regularly 
scheduled maintenance releases for a significant period of time (18 
months or more).

Unfortunately, one particular feature that some folks feel strongly is 
an absolute requirement in the next scheduled maintenance release branch 
was not completed in time for Lustre 2.4.0.  Happy, that feature has 
landed on the master branch, and will appear in the next Lustre feature 
release 2.5.0.

Rather than split the community effort between two closely spaced 
scheduled maintenance release branches, we have decided to realign our 
efforts from the 2.4 branch to the 2.5 branch.

An updated Community Lustre Roadmap has been posted here:

   http://lustre.opensfs.org/community-lustre-roadmap/

What this means in a Nutshell
-----------------------------

The Lustre 2.5 branch is the one for which we expect to see regularly 
scheduled maintenance release for an extended period of time (18+ months).

We no longer expect regularly scheduled maintenance releases on the 
Lustre 2.4 branch after Lustre 2.4.2 release.  Our recommended upgrade 
path after 2.4.2 is to the latest 2.5.X release.

What to do if you are already committed to Lustre 2.4
-----------------------------------------------------

If you have already committed to using Lustre 2.4 at your organization 
and an upgrade to Lustre 2.5 is not either desired or possible, we 
recommend that you contact your Lustre support vendor to find out which 
branches they intend to support.  Some Lustre vendors offer support for 
branches beyond the Community's officially recommended releases.

Some Lustre vendors have already announced their intent to continue 
supporting their users who have committed to the Lustre 2.4 branch.

Chris



On 08/14/2013 04:21 PM, Christopher J. Morrone wrote:
> Hi folks,
>
> Attached is a draft of an updated Lustre Roadmap slide.  I made it a jpg
> to save space in email, but the final on the web will be png so it won't
> have all of those compression artifacts.
>
> Let me know if you spot anything that needs correction.
>
> I am running out of time today, so I will have to delay the draft of the
> 2.5 "scheduled maintenance branch" announcement until tomorrow.
>
> Chris