[Lustre-devel] Community Roadmap Update, Realignment on 2.5
Christopher J. Morrone
morrone2 at llnl.gov
Mon Aug 19 18:01:39 PDT 2013
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, HSM (Hierarchical Storage Management), did not
land on the development branch in time for Lustre 2.4.0. Happily HSM is
now landed on the master branch, and will appear in the next Lustre
feature release, version 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:
What this means in a Nutshell
The Lustre 2.5 branch is the one for which we expect to see regularly
scheduled maintenance releases for an extended period of time (18+ months).
We no longer expect regularly scheduled maintenance releases on the
Lustre 2.4 branch after the Lustre 2.4.2 release. Our recommended
upgrade path after 2.4.2 is an upgrade 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.
OpenSFS Community Development Working Group Lead
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