OpenZFS Developer Summit

The thirteenth annual OpenZFS Developer Summit and second annual OpenZFS User Summit took place in Portland, Oregon, USA October 25th through 28th, 2025.

YouTube Full-Day Recording Link

Peertube Recording Link

We aim to post individual video recordings in the coming weeks.

The 2025 Developer Hackathon and Collaboration Idea Spreadsheet

The 2024 User and Developer Summit videos

User Presentations Saturday October 25th

Time	Title	Speaker	Affiliation
9 AM - 9:30 AM	Breakfast
9:30 AM - 9:50 AM	Welcome
10 AM - 10:50 AM	Introductions and Interests
11 AM - 11:50 AM	All About JBODs	Garrett Wollman	MIT
12:30 PM - 1:30 PM	Lunch and Socializing
1:30 PM - 2:20 PM	Responsible Replication with Zelta	Daniel Bell	Bell Tower
2:30 PM - 3:20 PM	OpenZFS Native Auditing	Allan Jude	Klara Systems
3:30 PM - 4:20 PM	Pooled inodes in nested datasets	Roundtable
4:30 PM - 6:20 PM	Something engaging from amazing people
6:30 PM - 8 PM	Dinner

User Presentations Sunday October 26th

Time	Title	Speaker
9 AM - 9:50 AM	Breakfast
10 AM - 10:50 AM	ZFS Support Roundtable	Allan Jude and Daniel Bell
11 AM - 11:50 AM	OpenZFS 3.0 Release Goals, Quality Controls	All
12 PM - 12:50 PM	Lunch and Socializing
1 PM - 1:50 PM	Userspace OpenZFS --> Realtime Replication, and the Test Suite	All
2 PM - 2:50 PM	Channel Programs/libzfs Revisited	All
3 PM - 3:50 PM	OpenZFS Object Bucket Dataset Type	All
4 PM - 5:50 PM	Developer Welcome and Proposal Hand-off	All
Leftovers or Off-Site Dinner

Developer Presentations Monday October 27th

Time	Title	Speaker	Affiliation
9 AM - 9:30 AM	Breakfast
9:30 AM - 10:00 AM	Welcome and Financial Update
10 AM - 10:50 AM	AnyRaid	Paul Dagnelie	Klara Systems
11 AM - 11:50 AM	Mass Storage Capacities: no end in sight	Muhammad Ahmad	Seagate
12 PM - 12:50 PM	Lunch and Socializing
1 PM - 1:50 PM	ZFS Large Label and Blockpointer-V2	Allan Jude	Klara Systems
2 PM - 2:30 PM	OpenZFS on Fully Elastic Low-cost Storage	Dan Perry	AWS
2:30 PM - 3:00 PM	QLC NAND: When the hardware needs help from the filesystem	Allan Jude	Klara Systems
3:30 PM - 4:20 PM	Zettalane ZFS Port and Cloud-Native NAS Implementation	Sam Sammandam	ZettaLane Systems
4:30 PM - Dinner	User/Developer Hand-off	All Present	OpenZFS

Developer Hackathon Tuesday October 28th

Time	Title
9 AM - 9:50 AM	Breakfast and Socializing
10 AM - 12 PM	Hackathon (ideas spreadsheet)
12 PM - 1 PM	Lunch and Socializing
1 PM - 4 PM	Hackathon
4 PM - 5 PM	Hackathon Voting and Awards
Dinner Suggestions Available

Sponsorship

Help make this event a success with a financial donation, a travel grant, in-kind donations such as food and beverages, and ZFS-related hardware loans. Please email editor@callfortesting.org for details. OpenZFS is a member project of SPI (Software in the Public Interest) a 503(c)(3) public-benefit non-profit organization, making your sponsorship tax-deductible as an individual or organization.

Individual sponsors are invited to donate via PayPal:

Thank you Diamond Sponsor

Thank you Platinum Sponsor

Thank you Gold Sponsors

Thank you Silver Sponsor

Thank you Bronze Sponsor

Venue

The 2025 OpenZFS User and Developer Summit will take place at 5500 SW Dosch Road, Portland, Oregon, in the Hillsdale neighborhood. The venue has ample parking and is served by the 54 TriMet bus route. Social events will take place at and near the venue. Portland International Airport (PDX) serves over 75 destinations and Portland is served by Amtrak and various busses.

The MAX light rail Red line provides easy transportation from the airport to downtown, and we suggest any downtown hotel that fits your budget and to take the bus or Lyft/Uber to the venue. The intersection of SW 6th Avenue and SW Morrison is one block from stops for the light rail and bus lines, making this a good starting place if you want to rely on public transportation.

The Portland State University University Place Hotel is attractive because of its competitive rates and general proximity to the venue.

Code of Conduct

The OpenZFS community values respectful, welcoming behavior towards everyone. This enables our members to thrive and contribute, and encourages new participants to join our event . The OpenZFS Code of Conduct applies to attendees, speakers, sponsors, vendors, and staff of this event, and will be enforced by staff members throughout the event.

Participants asked to stop inappropriate behavior are expected to comply immediately or be expelled from the conference at the discretion of the conference organizers.

Contact information for reporting a violation of the code of conduct will be provided during the event. To report a violation of the code of conduct, take one of the following actions: