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openzfs
zfs
C2013–2026
openzfs / zfs

zfs

OpenZFS on Linux and FreeBSD

Systems & Infrastructure
Explore on GitHubRead Hacker News discussions
226Distinct people
423Mentions
4Explicit recommenders
12.6KGitHub stars
REPOSITORY AT A GLANCE

What to know before exploring

What it is

OpenZFS on Linux and FreeBSD

GitHub

Where it is used

No documented product use was verified in the last source check.

What people are saying

I will soon prepare some scripts to do that, but I first want to confirm the core ideas and design something that I will only have to do once, and the discussion on…

csdvrx used a recommendation phrase. 4 indexed comments match. This is a phrase match, not a verdict.

No classified warning is attached to this page. Read the discussions before treating silence as approval.

Also in these discussions

Mentioned in the same Hacker News threads. That is not proof they are substitutes.

This week on Hacker News

Nov 8–Nov 15 UTC · Direct repository links and separately labeled related project stories. Indexed through 11/15/2026, 10:49:33 PM UTC.

Mentions over time

HN mentions by year423 dated mentions

Observed mentions: 2013-03-29 20:43:14 UTC to 2026-10-12 18:23:23 UTC.

0204060802013-01-01 00:00:00 UTC to 2014-01-01 00:00:00 UTC (exclusive): 2 mentions; 0 submissions, 2 comments20132014-01-01 00:00:00 UTC to 2015-01-01 00:00:00 UTC (exclusive): 17 mentions; 0 submissions, 17 comments2015-01-01 00:00:00 UTC to 2016-01-01 00:00:00 UTC (exclusive): 3 mentions; 2 submissions, 1 comments2016-01-01 00:00:00 UTC to 2017-01-01 00:00:00 UTC (exclusive): 25 mentions; 3 submissions, 22 comments2017-01-01 00:00:00 UTC to 2018-01-01 00:00:00 UTC (exclusive): 32 mentions; 4 submissions, 28 comments2018-01-01 00:00:00 UTC to 2019-01-01 00:00:00 UTC (exclusive): 10 mentions; 2 submissions, 8 comments2019-01-01 00:00:00 UTC to 2020-01-01 00:00:00 UTC (exclusive): 29 mentions; 9 submissions, 20 comments20192020-01-01 00:00:00 UTC to 2021-01-01 00:00:00 UTC (exclusive): 50 mentions; 14 submissions, 36 comments2021-01-01 00:00:00 UTC to 2022-01-01 00:00:00 UTC (exclusive): 29 mentions; 8 submissions, 21 comments2022-01-01 00:00:00 UTC to 2023-01-01 00:00:00 UTC (exclusive): 31 mentions; 3 submissions, 28 comments2023-01-01 00:00:00 UTC to 2024-01-01 00:00:00 UTC (exclusive): 86 mentions; 13 submissions, 73 comments2024-01-01 00:00:00 UTC to 2025-01-01 00:00:00 UTC (exclusive): 40 mentions; 6 submissions, 34 comments2025-01-01 00:00:00 UTC to 2026-01-01 00:00:00 UTC (exclusive): 59 mentions; 7 submissions, 52 comments2026-01-01 00:00:00 UTC to 2027-01-01 00:00:00 UTC (exclusive): 10 mentions; 3 submissions, 7 comments. Incomplete calendar period.2026*

* An incomplete calendar period is marked with an outlined bar. Its count is not directly comparable with a full period.

Counts come from the repository’s dated source evidence. Index cutoff: 2026-11-02 08:16:59 UTC.

View mention counts and date ranges
UTC ranges include their start and exclude their end. Select a period to filter the source evidence.
PeriodStart (UTC)End (exclusive, UTC)MentionsSubmissionsComments
20132013-01-01 00:00:00 UTC2014-01-01 00:00:00 UTC202
20142014-01-01 00:00:00 UTC2015-01-01 00:00:00 UTC17017
20152015-01-01 00:00:00 UTC2016-01-01 00:00:00 UTC321
20162016-01-01 00:00:00 UTC2017-01-01 00:00:00 UTC25322
20172017-01-01 00:00:00 UTC2018-01-01 00:00:00 UTC32428
20182018-01-01 00:00:00 UTC2019-01-01 00:00:00 UTC1028
20192019-01-01 00:00:00 UTC2020-01-01 00:00:00 UTC29920
20202020-01-01 00:00:00 UTC2021-01-01 00:00:00 UTC501436
20212021-01-01 00:00:00 UTC2022-01-01 00:00:00 UTC29821
20222022-01-01 00:00:00 UTC2023-01-01 00:00:00 UTC31328
20232023-01-01 00:00:00 UTC2024-01-01 00:00:00 UTC861373
20242024-01-01 00:00:00 UTC2025-01-01 00:00:00 UTC40634
20252025-01-01 00:00:00 UTC2026-01-01 00:00:00 UTC59752
2026 (partial)2026-01-01 00:00:00 UTC2027-01-01 00:00:00 UTC1037

From the project README

An excerpt from the repository, fetched Nov 12, 2026.

Read the project’s introduction
OpenZFS is an advanced file system and volume manager which was originally developed for Solaris and is now maintained by the OpenZFS community. This repository contains the code for running OpenZFS on Linux and FreeBSD. Official Resources Documentation - for using and developing this repo ZoL site - Linux release info & links Mailing lists OpenZFS site - for conference videos and info on other platforms (illumos, OSX, Windows, etc) Installation Full documentation for installing OpenZFS on your favorite operating system can be found at the Getting Started Page. Contribute & Develop We have a separate document with contribution guidelines. We have a Code of Conduct. Release OpenZFS is released under a CDDL license. For more details see the NOTICE, LICENSE and COPYRIGHT files; UCRL-CODE-235197 Supported Kernels and Distributions Linux Given the wide variety of Linux environments, we prioritize development and testing on stable, supported kernels and distributions. Kernel (kernel.org) All longterm kernels from kernel.org are supported. stable kernels are usually supported in the next OpenZFS release. Supported longterm kernels: 6.18, 6.12, 6.6, 6.1, 5.15, 5.10. Red Hat Enterprise Linux (RHEL) All RHEL (and compatible systems: AlmaLinux OS, Rocky Linux, etc) on the full or maintenance support tracks are supported. Supported RHEL releases: 8.10, 9.7, 10.1. Ubuntu All Ubuntu LTS releases are supported. Supported Ubuntu releases: 26.04 “Resolute”, 24.04 “Noble”, 22.04 “Jammy”. Debian All Debian stable and LTS releases are supported. Supported Debian releases: 13 “Trixie”, 12 “Bookworm”, 11 “Bullseye”. Other Distributions Generally, if a distribution is following an LTS kernel, it should work well with OpenZFS. FreeBSD All FreeBSD releases receiving security support are supported by OpenZFS. Supported FreeBSD releases: 15.1, 14.4.
Read the full README on GitHub

What Hacker News says

59 sources
allanjude·Dec 1, 2025
klarasystems.com | OpenZFS Developer | REMOTE | Full-time Contract We successfully hired from HN in the previous round and are looking for another OpenZFS Developer (3+ years of experience) to join our team! Klara Inc. provides development & solutions focused on open source software and the community-driven development of OpenZFS and FreeBSD. We develop new features, investigate/fix bugs, and support the community of these important open source infrastructure projects. Some of our recent work includes major ZFS features such as Fast Deduplication (OpenZFS 2.3: https://github.com/openzfs/zfs/discussions/15896) and AnyRAID: https://github.com/openzfs/zfs/pull/17567. We’re looking for an OpenZFS Developer with: - Strong C programming skills and solid understanding of data structures - Experience with file systems, VFS, and OS internals (thre
Read the rest
ading, locking, IPC, memory management) - Familiarity with ZFS internals (DMU, MOS, vdevs, ZPL, datasets, boot environments) - Ability to work across Linux, FreeBSD, or illumos environments Previous upstream contributions to OpenZFS or other open source projects are a big plus. Submit an application through our site: https://klarasystems.com/careers/openzfs-developer/
In Ask HN: Who is hiring? (December 2025)
sipofwater·Sep 8, 2025
* Here is the direct link to the August 15, 2025 comment by ButterBarTheGr8 (GitHub): https://github.com/openzfs/zfs/discussions/14793#discussionc... (github.com/openzfs/zfs/discussions/14793#discussioncomment-14122232) * Comment by warlordattack (https://www.youtube.com/@warlordattack) posted at https://www.youtube.com/watch?v=TbFIUu_7LIc ("BEWARE! Windows Update and SSD Problem is WAY worse than we thought! Full Demonstration" video by JayzTwoCents), "i have the exact same problem in Linux with T500 4to (CT4000T500SSD3) firmware (P8CR013)": https://www.youtube.com/watch?v=TbFIUu_7LIc&lc=UgzOxFN6V3d-a... (www.youtube.com/watch?v=TbFIUu_7LIc&lc=UgzOxFN6V3d-af_04Qt4AaABAg)
In ButterBarTheGr8's Aug 15, 2025 comment in "Unsuitable SSD/NVMe hardware for ZFS"
magicalhippo·Aug 31, 2025
> What happens on ZFS if you lose all your alloc info? According to this[1] old issue, it hasn't happened frequently enough to prioritize implementing a rebuild option, however one should be able to import the pool read-only and zfs send it to a different pool. As far as I can tell that's status quo. I agree it is something that should be implemented at some point. That said, certain other spacemap errors might be recoverable[2]. [1]: https://github.com/openzfs/zfs/issues/3210 [2]: https://github.com/openzfs/zfs/issues/13483#issuecomment-120...
In Bcachefs Goes to "Externally Maintained"

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