openzfs/zfs zfs-2.4.0 on GitHub

We are excited to announce OpenZFS 2.4.0!

Supported Platforms

Linux: compatible with 4.18 - 6.18 kernels
FreeBSD: compatible with versions 14, 15 & 16

Key Features in OpenZFS 2.4.0:

Quotas: Allow setting default user/group/project quotas (#17130)
Uncached IO: Direct IO fallback to a light-weight uncached IO when unaligned (#17218, #17407, #17872, #17875)
Unified allocation throttling: A new algorithm designed to reduce vdev fragmentation (#17020)
Better encryption performance using AVX2 for AES-GCM (#17058)
Allow ZIL on special vdevs when available (#17505)
Extend special_small_blocks to land ZVOL writes on special vdevs (#14876), and allow non-power of two values (#17497)
Add zfs rewrite -P which preserves logical birth time when possible to minimize incremental stream size (#17565)
Add -a|--all option which scrubs, trims, or initializes all imported pools (#17524)
Add zpool scrub -S -E to scrub specific time ranges (#16853)
Add zpool prefetch -t brt to prefetch BRT (block cloning table) (#17890)
Add send:encrypted permission (#17543)
Rename arc_summary and arcstat to zarcsummary and zarcstat (#17712)
Temporarily "sit out" child vdevs that are being abnormally slow (#17227)
Relax topology restrictions on special/dedup vdevs (#17496)
Improvements to ashift handling (#17826, #17830)
Multiple gang blocks improvements and fixes (#17111, #17004, #17587, #17484, #17123, #17073, #17824)
New dedup optimizations and fixes (#17038, #17123, #17435, #17391, #17960, #17961, #17980, #17983)
New block cloning optimizations and fixes (#17572, #17875, #17903, #17915, #17916, #17921)

zfs-2.4.0 changelog: git cherry -v remotes/origin/zfs-2.3-release zfs-2.4.0 | sed '/^-/d; s/+ //g'

Additional Information:

Documentation - OpenZFS documentation for Linux and FreeBSD.

Thank you to all 121 contributors who participated in this release cycle

$ git shortlog -s zfs-2.3.0..zfs-2.4.0
   1	Achill Gilgenast
   3	Adi-Goll
   4	Ahelenia Ziemiańska
   1	Akash B
  13	Alan Somers
   1	Alek Pinchuk
   1	Aleksandr Liber
   1	Alex
 119	Alexander Motin
   3	Alexander Ziaee
   1	Alexx Saver
   2	Allan Jude
  26	Ameer Hamza
   1	Andres
   3	Andrew Walker
   1	Andriy Tkachuk
   1	Artem
   1	Artem-OSSRevival
   9	Attila Fülöp
   7	Brian Atkinson
  51	Brian Behlendorf
   2	Cameron Harr
   1	Carl George
   8	Chunwei Chen
   1	Coleman Kane
   1	Colin Percival
   1	Cong Zhang
   2	Dag-Erling Smørgrav
   2	Dimitry Andric
   1	Diwakar Kristappagari
   3	Don Brady
   1	Dr. Christian Kohlschütter
   1	Eric A. Borisch
   1	Fabian-Gruenbichler
   9	Fedor Uporov
   1	Felix Schmidt
   1	Friedrich Weber
   3	George Amanakis
   1	Germano Massullo
   5	Gionatan Danti
   5	Igor Ostapenko
   7	Ivan Shapovalov
   2	Ivan Volosyuk
   1	JKDingwall
   1	JT Pennington
   1	James Reilly
   1	Jaydeep Kshirsagar
   1	Jean-Sébastien Pédron
   1	Jerzy Kołosowski
   1	Jitendra Patidar
   2	Jo Zzsi
   1	Joel Low
   1	Joseph Anthony Pasquale Holsten
   2	José Luis Salvador Rufo
   1	Konstantin Belousov
   1	Kyle Evans
   1	Maksym Shkolnyi
   6	Mariusz Zaborski
  10	Mark Johnston
   5	Martin Matuška
   2	Martin Rüegg
   1	Mateusz Guzik
   1	Mateusz Piotrowski
   1	Matthew Heller
   1	Meriel Luna Mittelbach
   2	Olivier Certner
   1	Patrick Fasano
   1	Patrick Xia
  33	Paul Dagnelie
   5	Pavel Snajdr
   1	Peng Liu
   1	Phil Sutter
   1	Piotr Kubaj
   1	Piotr P. Stefaniak
   1	Quartz
   1	Quentin Thébault
   1	René Wirnata
   1	Rich Ercolani
   2	Richard Kojedzinszky
   4	Richard Yao
   5	Rick Macklem
 229	Rob Norris
   5	Robert Evans
   1	Roberto Ricci
   1	Ryan Libby
   2	SHENGYI HONG
   1	Sam James
   1	Sebastian Pauka
   1	Serapheim Dimitropoulos
   1	Shawn Bayern
  13	Shengqi Chen
   5	Shreshth Srivastava
   1	Sietse
   7	Simon Howard
   1	Steve Mokris
   1	Syed Shahrukh Hussain
   1	Tim Smith
  20	Tino Reichardt
   1	Todd Seidelmann
   1	Todd Zullinger
   1	Tomohiro Kusumi
  36	Tony Hutter
   9	Toomas Soome
   7	Umer Saleem
   1	Vandana Rungta
   1	Warner Losh
   1	Youzhong Yang
   3	bspengler-oss
   2	buzzingwires
   1	classabbyamp
   1	hoshinomori
   1	jamisiveshkumar
   1	khoang98
   1	kotauskas
   1	mnrx
   1	nav1s
   1	ofthesun9
   1	poscat
   1	tleydxdy
   1	trick2011
   2	tstabrawa

Module option changes - See the module parameters documentation for the complete list of the options and what they control.
New module options
Removed module options
Modified module options
Feature flags changes - See the feature flags documentation for the complete list of the options and what they control.
New feature flags

VDEV property changes - See the vdev properties documentation for the complete list of the options and what they control.
New vdev properties
dataset property changes - See the dataset properties documentation for the complete list of the options and what they control.
New dataset properties