Difference between revisions of "OpenZFS Developer Summit"

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Revision as of 16:54, 8 November 2013

OpenZFS Developer Summit 2013

Delphix is hosting a developer-focused event for OpenZFS. The goal of the event is to foster cross-platform community discussions of OpenZFS work, and to make progress on some of the projects proposed for this community.

We were previously calling this event "OpenZFS Day", but decided to rename it to reflect its target audience of ZFS developers.

Huge THANK YOU to our generous sponsors

Delphix logo.png Ddrdrive logo dev 2013.png Logo freebsdfoundation.png
SageCloud-logo-RGB-large-optimized.jpg Ixsystems.jpg CS logo withTagline 150px.png
SpectraLogicLogo.jpg Joyent-logo.png New hac logo.jpg
Nexenta logo.jpg

The high-level agenda is:

Monday, Nov 18, 9am
  • Talks
  • Breakout sessions
  • Hackathon planning
  • Beer bash
Tuesday, Nov 19, 9:30am Hackathon (hopefully start work on some of the Projects the community has suggested)


The event will be in the Delphix office in San Francisco:

604 Mission St. Suite 400, San Francisco, CA 94105

Speaker Info

Note: If you are in the room, you are potentially a speaker. This will be done in unconference style, so every attendee should come prepared to present or otherwise lead a discussion or session of up to 45 minutes. You can indicate potential topics in the registration table below.

Equipment available:

  • Projector
  • Whiteboard


The goals of the hackathon are:

  • to get people working with ZFS engineers from outside their normal circles
  • to start work on some of the projects we'd like to accomplish

Therefore, we should plan to work in small teams of 2-3 engineers. The team members could be pair-programming, splitting up the work into discrete tasks for each person, or advising / implementing.

Hackathon ideas

Add your idea and your name below. Be prepared to explain your idea at the beginning of the hackathon and enlist/entice others to help with it.

  • Userland ioctls: support for send/recv (fd operations over the wire) User:mahrens
  • larger (1MB) blocksize: shouldn't be too hard if we ignore performance impact User:mahrens
  • dedicated kmem_cache for dedup table entries
  • stdin / stdout buffer to improve performance of zfs send and receive
  • ZFS mechanism to override devices' reported sector size (512 vs 4k) (alex @ delphix)
  • feature flags enhancements for send streams User:csiden
  • set owner of all files within a filesystem with a ZFS property User:csiden


We are expecting everyone will be there to contribute/participate.

The sign up deadline has passed. A few spots are available for late registration. Mail admin@open-zfs.org if you would like to attend.

Name Affiliation What do you want to talk about? Your experience with ZFS Travel information T-shirt Size Food allergies/preferences? (please list)
Matt Ahrens Delphix OpenZFS repo: what interfaces should be supported Founded ZFS, OpenZFS Local to SF M none
Sanjeev Bagewadi Pluribus Networks Was part of the RPE team in Sun which fixed ZFS issues faced by customers Will be in the Bay Area around that time M none
Ned Bass LLNL Common code base, block allocator improvements ZFS on Linux port, Lustre integration from East Bay XL vegetarian preferred
Brian Behlendorf LLNL Portable memory management & FMA infrastructure ZFS on Linux Maintainer Local to east Bay Area XL none
Max Bruning Joyent examining ZFS on-disk format with MDB leads ZFS training classes  ?  ?  ?
Steven Burgess Datto Inc. openZFS as a customer Working as a developer at a company whose product uses ZOL from NYC M none
Kirill Davydychev Nexenta Scalability on large systems, major known bottlenecks. Debugging, performance analysis/tuning Houston M none
Justin Gibbs Spectra Logic  ? DMU performance work flying in from CO  ? vegetarian
Max Grossman Delphix Making it easier to get new ZFS developers up to speed (retrospective on the hole birth feature) 3 months so far, still so much to learn... Local L none
Jordan Hubbard iXsystems OpenZFS community organization, independent code repo processes  ? Local  ?  ?
John Wren Kennedy Delphix Uniform test coverage for OpenZFS Supported ZFS in RPE at Sun/Oracle, and test ZFS in QA at Delphix. Denver L none
John Layman SageCloud Interested in disk management (spin up/down disks, drive identification, etc.) Been working with ZFS on Linux for a few months, contributed small bugfix Boston XL none
Adam Leventhal Delphix ZFS performance investigations? RAID-Z2/3, performance work, some small ZFS tasks here and there local L none
Xin Li iXsystems ZFS developer for FreeBSD, TrueNAS and FreeNAS products FreeBSD deputy security officer / release engineering team member local Bay Area L none
Jorgen Lundman GMO Internet ZFS, portability ZFS on OS X Tokyo XL none
Maxim Martynov M none
Robert Mustacchi Joyent Misc. debugging Local to SF L None
Tony Nguyen Nexenta Misc. debugging, import and I/O performance flying in from Denver M None
Alfred Perlstein iXsystems ZFS performance and debugging FreeNAS (FreeBSD+ZFS) developer  ?  ?  ?
Boris Protopopov Nexenta Resumable send/recv, defrag, storage tiering, spare management, doing fancy things with vdevs ZFS dev lead at Nexenta, ZFS extensions for enterprise class features and performance Boston M None
Alex Reece Delphix small bug fixes local M No marinera
Karyn Ritter Delphix Community management (discussion) local M
Craig Rodrigues iXsystems ZFS developer for TrueNAS and FreeNAS products FreeBSD release engineering team member local L none
Chris Siden Delphix ZFS Channel Programs, feature flags enhancements for send streams Worked on feature flags and async destroy local L none
Alex Solomatnikov M none
Prashanth Sreenivasa I would like to learn more about ZIL, ZFS I/O scheduler & pipeline and impact of using flash-disks instead of conventional hard-disks. Worked on various PDE (product development engineering) groups including Network Storage, Systems & Solaris kernel. Recently I'm working on ZFS based storage appliances, trying to improve zfs performance on illumos/x86 platform and looking forward to contribute to the open source zfs. M
Prakash Surya LLNL Misc. work on Linux port. Much to learn, still. Local to east Bay Area M none
Rafael Vanoni Pluribus I'm not a ZFS developer, but would like to work my way towards that. I worked on the thread scheduler/dispatcher at Sun/Oracle  ? M  ?
George Wilson Delphix performance on full & fragmented pools Implemented lots of SPA & VDEV stuff flying in from Atlanta ~Monday - Thursday (TBD)  ? none
Matt Youds High Availability Experience with ZFS configuration at High-Availability. L Fish

– please keep the table above sorted by last name.


Please contact ann.togasaki@gmail.com if you'd like to be a sponsor of this event.

Sponsorship opportunities include:

What do you get for sponsoring:

  • Your name/link on this page!
  • Thank you mention during the opening and closing
  • Space to put your pop-up banner at the conference venue
  • An opportunity to be known as a ZFS supporter in a very talented and influential community.