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Welcome to OpenZFS

OpenZFS Developer Summit 2020

The 2020 OpenZFS Developer Conference is being held October 6-7 (Tue-Wed), as an online conference.

The conference will resume at 4:00 PM Pacific Time Wednesday

Tuesday Schedule (Pacific Time)

Time Title Speaker Company Presentation/Video
9:00 - 9:20 State of OpenZFS Matt Ahrens Delphix Slides
9:20 - 9:40 ZFS Caching: How Big Is the ARC? George Wilson Delphix Slides
9:40 - 10:00 Persistent L2ARC George Amanakis Independent Slides
10:00 - 10:20 BREAK / BREAKOUT sessions
10:20 - 11:00 ZIL Performance Improvements for Fast Media Saji Nair Nutanix Slides
11:00 - 11:20 BREAK / BREAKOUT sessions
11:20 - 11:40 Sequential Reconstruction Mark Maybee Cray Slides
11:40 - 12:20 dRAID, Finally! Mark Maybee Cray Slides
12:20 - 1:20 LUNCH / BREAKOUT sessions
1:20 - 2:00 Send/Receive Performance Enhancements Matt Ahrens Delphix Slides
2:00 - 2:20 BREAK / BREAKOUT sessions
2:20 - 2:40 Improving “zfs diff” performance with reverse-name lookup Sanjeev Bagewadi & David Chen Nutanix Slides
2:40 - 3:00 Performance Troubleshooting Tools Gaurav Kumar Nutanix Slides
3:00 - 3:10 Closing Matt Ahrens Delphix
3:10 - 4:10 hang out everyone

Wednesday Schedule (Pacific Time)

Time Title Speaker Company
9:00 - 9:10 Intro Matt Ahrens Delphix
9:10 - 9:30 File Cloning with Block Reference Table Pawel Dawidek Fudo Security
9:30 - 9:40 Default-Compatible Pool Features Josh Paetzel Panzura
9:40 - 10:10 Additional pitches TBD day-of
10:10 - 4:00 hacking! everyone
4:00 - 5:00 Hacking presentations, voting & awards everyone
5:00 - 6:00 hang out everyone

Thanks to our Sponsors!

Diamond Sponsors

  • Delphix

Platinum Sponsors



OpenZFS brings together developers and users from various open-source forks of the original ZFS on different platforms and we're always looking to grow our community. There are a multitude of ways to contribute to the project and contributors are happy to help newcomers. As we add diverse perspectives, our community becomes richer, and we're committed to creating an environment where all people feel welcome. Information for new contributors is available here.

Primary activities of the community include:

OpenZFS is an associated project of SPI (Software in the Public Interest). SPI is a 501(c)3 nonprofit organization which handles our donations, finances, and legal holdings. You can donate to OpenZFS using the link below:


OpenZFS was announced in September 2013 as the truly open source successor to the ZFS project. Our community brings together developers from the illumos, FreeBSD, Linux, macOS, NetBSD, and Windows platforms, and a wide range of companies that build products on top of OpenZFS.

OpenZFS is an outstanding storage platform that encompasses the functionality of traditional filesystems, volume managers, and more, with consistent reliability, functionality, and performance across all distributions:

illumos Webpage GitHub
ZoF – ZFS on FreeBSD Webpage GitHub
ZoL – ZFS on Linux Webpage GitHub
OpenZFS on macOS Webpage GitHub
OpenZFS on Windows Webpage GitHub

Project Goals

The high-level goals of OpenZFS are to:

  • raise awareness of the quality, utility, and availability of open source implementations of ZFS,
  • encourage open communication about ongoing efforts to improve open source ZFS, and
  • ensure consistent reliability, functionality, and performance of all distributions of ZFS.

The main technical goal of OpenZFS is easier sharing of code between platforms.

We accept donations to cover our ongoing costs.

OpenZFS is an associated project of SPI (Software in the Public Interest). SPI is a 501(c)(3) nonprofit organization which handles our donations, finances, and legal holdings. You can donate through paypal using the link below: