Difference between revisions of "OpenZFS Developer Summit"

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| [[User:csiden | Chris Siden]]

Revision as of 22:19, 25 October 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.

The high-level agenda is:

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


The event will be in the San Francisco Bay Area, most likely in San Francisco. The specific location will depend on how many people plan to attend. The hope is that we can have it at the Delphix office in San Francisco. If it becomes too big, we'll have to reconsider and find a different location.

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
  • replace dn_ranges/free_range_t with range_tree_t User:mahrens
  • 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


If you plan to attend the event, please edit this page and add yourself below, or contact ann.togasaki@gmail.com. If you would like to present and/or have suggestions for what you would like to learn about, please include those details. We are expecting everyone will be there to contribute/participate. (If you need edit permission for this page, email your login name to admin@open-zfs.org)

The sign up deadline is 11:59pm Pacific Time on Sunday, October 27, 2013. We need to have a cutoff date so that we can plan for a space that is large enough to accommodate everyone who wants 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
Brian Behlendorf LLNL Portable memory management & FMA infrastructure ZFS on Linux Maintainer Local to east Bay Area L none
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
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
Adam Leventhal Delphix ZFS performance investigations? RAID-Z2/3, performance work, some small ZFS tasks here and there local L none
Jorgen Lundman GMO Internet ZFS, portability ZFS on OSX 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
Boris Protopopov Nexenta Resumable send/recv, defrag, storage tiering, spare management 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
Prakash Surya LLNL Misc. work on Linux port. Much to learn, still. Local to east Bay Area M none
Ilya Usvyatsky Nexenta resumable send/recv, defrag ? ? ? ?
George Wilson Delphix performance on full & fragmented pools Implemented lots of SPA & VDEV stuff flying in from Atlanta ~Monday - Thursday (TBD) ? none

– 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:

  • Breakfast (2 days) - Sponsored! Thank you Cloudscaling and iXsystems.
  • Lunch (2 days)
  • Coffee Breaks (2 days) - Sponsored! Thank you iXsystems
  • Beer Bash (day 1) - Sponsored! Thank you DDRdrive
  • T-Shirts - Sponsored! Thank you Delphix

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.