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Alexander Motin 0ea44e576b
Fix deduplication of overridden blocks
Implementation of DDT pruning introduced verification of DVAs in
a block pointer during ddt_lookup() to not by mistake free previous
pruned incarnation of the entry.  But when writing a new block in
zio_ddt_write() we might have the DVAs only from override pointer,
which may never have "D" flag to be confused with pruned DDT entry,
and we'll abandon those DVAs if we find a matching entry in DDT.

This fixes deduplication for blocks written via dmu_sync() for
purposes of indirect ZIL write records, that I have tested.  And
I suspect it might actually allow deduplication for Direct I/O,
even though in an odd way -- first write block directly and then
delete it later during TXG commit if found duplicate, which part
I haven't tested.

Reviewed-by: Tony Hutter <hutter2@llnl.gov>
Signed-off-by:	Alexander Motin <mav@FreeBSD.org>
Sponsored by:	iXsystems, Inc.
Closes #17120
2025-03-13 13:27:57 -04:00
.github Add 'zfs-qemu-packages' workflow for RPM building 2025-03-05 09:19:56 -08:00
cmd Fix deduplication of overridden blocks 2025-03-13 13:27:57 -04:00
config Linux 6.14: dops->d_revalidate now takes four args 2025-02-05 09:42:37 -08:00
contrib Add recursive dataset mounting and unmounting support to pam_zfs_key (#16857) 2025-01-31 11:00:59 -08:00
etc Remount datasets on soft-reboot 2024-12-13 13:50:50 -08:00
include Fix deduplication of overridden blocks 2025-03-13 13:27:57 -04:00
lib zpool: allow relative vdev paths 2025-02-25 14:40:20 -05:00
man Expand fragmentation table to reflect larger possibile allocation sizes 2025-02-06 15:40:01 -05:00
module Fix deduplication of overridden blocks 2025-03-13 13:27:57 -04:00
rpm Support for cross-compiling kernel modules 2025-01-05 17:27:19 -08:00
scripts ZTS: zfs-tests: set TMPDIR to FILEDIR 2025-02-27 14:39:10 -08:00
tests Prefer embedded blocks to dedup 2025-03-13 13:27:15 -04:00
udev vdev_id: multi-lun disks & slot num zero pad 2024-10-08 17:43:04 -07:00
.cirrus.yml CI: add FreeBSD build with Cirrus CI 2023-10-06 08:50:26 -07:00
.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: refresh with recent new contributors 2025-03-13 10:35:31 -04:00
AUTHORS AUTHORS: refresh with recent new contributors 2025-03-13 10:35:31 -04:00
autogen.sh Ubuntu 22.04 integration: ShellCheck 2022-11-18 11:24:48 -08:00
CODE_OF_CONDUCT.md Documentation corrections 2022-12-22 11:34:28 -08:00
configure.ac config/kernel: enforce maximum kernel version, with escape hatch 2024-09-23 10:44:49 -07:00
copy-builtin copy-builtin: add hooks with sed/>> 2022-05-10 10:17:43 -07:00
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 Process script directory for all configs 2022-10-27 16:45:14 -07:00
META Linux 6.13 compat: META (#17098) 2025-02-27 11:24:36 -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 FreeBSD: remove support for FreeBSD < 13.0-RELEASE (#16372) 2024-08-05 16:56:45 -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

  • The META file contains the officially recognized supported Linux kernel versions.
  • Supported FreeBSD versions are any supported branches and releases starting from 13.0-RELEASE.