[Twg] requirements document update

[John Carrier]

During the TWG concall this morning, we walked through the comments several reviewers had made to our 2012 requirements document.  Several of us spent the rest of the day editing the text and resolving the remaining comments (thanks, Alex, Andreas, Cory, Josh and Nathan!)

It's now your opportunity to review the document (http://goo.gl/63u9Q) to help us select the requirements we will recommend to the OpenSFS Board for development in 2013.

As we did last year, we need to create a short list of 4-5 items we think are most important to the Lustre community.  The OpenSFS Board must agree with our recommendation before we can pursue proposals to meet these requirements.

Now that we have finished gathering requirements, the first step is for community members to send their top 10 requirements from the list below in priority order to discuss at lists.opensfs.org<mailto:discuss at lists.opensfs.org>.  We will discuss how to resolve our lists and make the recommendation to the board at the TWG face to face meeting (Weds 4/25 after LUG in Austin).

Please send questions or comments to the discuss at lists.opensfs.org<mailto:discuss at lists.opensfs.org> reflector.

--jc

The following table summarizes the 31 gathered requirements described in our document (http://goo.gl/63u9Q).  Category definitions are only meant to help organize requirements for discussion.  There is no significance to the order in which the requirements are listed.

Category


Requirement

Performance


Single client performance

Single shared file performance

Quality of service

Locality and scalability

Availability


Scalable fault management
Avoid RPC timeouts

Manageability and Administrative


Better support for newer kernels

Improved configuration robustness

Administrative shutdown

Better userspace tools

Snapshots

Arbitrary OST assignment

Storage Management


HSM and storage management infrastructure

OST migration/rebalancing

Asynchronous file replication (mirroring)

Complex file layouts

Dynamic layout for subset of a file

Storage pool quotas

Unified storage target

LNET


IPv6

Dynamic LNET configuration

Improved LNET robustness

LNET channel bonding

Application Interface


Improved storage semantics/interfaces

Better user tool API

POSIX extensions for file sets

POSIX extensions for scalable opens

Other


Varying page-sizes

Mixed endian support

Improved security infrastructure

Improved Lustre Tests


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