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Ameer Hamza 4655bdd8ab
ZTS: Fix L2ARC test reliability
Disable depth cap (L2ARC_EXT_HEADROOM_PCT=0) in DWPD and multidev tests
that rely on predictable marker advancement during fill and measurement.

Rework multidev_throughput to verify sustained throughput across three
consecutive windows instead of asserting an absolute rate. Use larger
cache devices (8GB) to avoid frequent global marker resets
(smallest_capacity/8), fill ARC before attaching caches to provide a
stable evictable buffer pool, and lower write_max to 8MB/s to avoid
exhausting data within the measurement period.

Use destroy_pool (log_must_busy) instead of log_must zpool destroy
to handle transient EBUSY during teardown.

Remove l2arc_multidev_throughput_pos from the expected-fail list in
zts-report.py.in.

Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Reviewed-by: Alexander Motin <alexander.motin@TrueNAS.com>
Signed-off-by: Ameer Hamza <ahamza@ixsystems.com>
Closes #18321
2026-03-16 14:58:25 -07:00
.github CI: Remove deprecated Fedora 41 2026-02-25 11:20:23 -08:00
cmd Make zpool status dedup table support raw bytes -p output 2026-03-13 09:53:56 -07:00
config config: fix STATX_MNT_ID detection 2026-03-12 09:58:54 -07:00
contrib zarcsummary: add man page 2026-03-16 11:08:05 -07:00
etc build: add SPDX license tags to build system files 2026-01-08 15:08:03 -08:00
include Make zpool status dedup table support raw bytes -p output 2026-03-13 09:53:56 -07:00
lib Make zpool status dedup table support raw bytes -p output 2026-03-13 09:53:56 -07:00
man zarcsummary: add man page 2026-03-16 11:08:05 -07:00
module ZVOL: Restrict cloning with different properties 2026-03-12 18:30:58 -07:00
rpm build: add SPDX license tags to build system files 2026-01-08 15:08:03 -08:00
scripts Linux 7.0: explicitly set setlease handler to kernel implementation 2026-02-22 11:39:06 -08:00
tests ZTS: Fix L2ARC test reliability 2026-03-16 14:58:25 -07:00
udev build: add SPDX license tags to build system files 2026-01-08 15:08:03 -08:00
.editorconfig Add an .editorconfig; document git whitespace settings 2020-01-27 13:32:52 -08:00
.gitignore Packaging: Auto-generate changelog during configure (#15528) 2023-11-16 08:58:47 -08:00
.gitmodules .gitmodules: link to openzfs github repository 2021-04-12 09:37:23 -07:00
.mailmap AUTHORS: add names of recent new contributors 2026-02-09 10:11:09 -08:00
AUTHORS AUTHORS: add names of recent new contributors 2026-02-09 10:11:09 -08:00
autogen.sh build: add SPDX license tags to build system files 2026-01-08 15:08:03 -08:00
CODE_OF_CONDUCT.md Documentation corrections 2022-12-22 11:34:28 -08:00
configure.ac Linux build: handle CONFIG_OBJTOOL_WERROR=y 2025-06-16 08:12:09 -07:00
copy-builtin CI: Test & fix Linux ZFS built-in build 2026-02-19 10:15:41 -08:00
COPYRIGHT Fix typos 2020-06-09 21:24:09 -07:00
LICENSE Update build system and packaging 2018-05-29 16:00:33 -07:00
Makefile.am Zstd: Integrate v1.5.7 into the ZFS build system 2026-01-20 13:41:06 -08:00
META Linux 6.19 compat: META 2026-02-11 09:37:02 -08:00
NEWS Fix NEWS file 2020-08-26 21:44:41 -07:00
NOTICE Update build system and packaging 2018-05-29 16:00:33 -07:00
README.md README: add FreeBSD 14.4-RELEASE alongside 15.0 2026-03-12 19:02:45 -07:00
RELEASES.md Update RELEASES.md LTS release to 2.2 2025-01-17 11:04:36 -05:00
TEST Remove CI builder customization from TEST 2020-03-16 10:46:03 -07:00
zfs.release.in Move zfs.release generation to configure step 2012-07-12 12:22:51 -07:00

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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.

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Official Resources

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: 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: 15.0, 14.4, 13.5.