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Matthew Ahrens 2d4bbd14fc
The abd child/parent relationship does not need to be tracked 
ABD's currently track their parent/child relationship.  This applies to
`abd_get_offset()` and `abd_borrow_buf()`.  However, nothing depends on
knowing this relationship, it's only used for consistency checks to
verify that we are not destroying an ABD that's still in use.  When we
are creating/destroying ABD's frequently, the performance impact of
maintaining these data structures (in particular the atomic
increment/decrement operations) can be measurable.

This commit removes this verification code on production builds, but
keeps it when ZFS_DEBUG is set.

Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Reviewed-by: Brian Atkinson <batkinson@lanl.gov>
Signed-off-by: Matthew Ahrens <mahrens@delphix.com>
Closes #11535
2021-01-30 10:04:42 -08:00
.github Forward questions to github discussions 2020-12-21 20:09:02 -08:00
cmd Added extra check to replace Faulted VDEV with Distributed Spare 2021-01-28 17:00:26 -08:00
config cppcheck: integrete cppcheck 2021-01-26 16:12:26 -08:00
contrib dracut: Fix race condition between load-key and import 2021-01-26 12:14:22 -08:00
etc Verify zfs module loaded before starting services 2020-11-28 11:11:18 -08:00
include The abd child/parent relationship does not need to be tracked 2021-01-30 10:04:42 -08:00
lib Fix a resource leak in uu_avl_pool_destroy 2021-01-26 19:39:28 -08:00
man Add zdb -r <dataset> <object-id | file> <output> 2021-01-27 21:36:01 -08:00
module The abd child/parent relationship does not need to be tracked 2021-01-30 10:04:42 -08:00
rpm Install zgenhostid to sbindir 2021-01-21 12:58:24 -08:00
scripts DKMS: Disable weak modules 2020-12-15 09:22:30 -08:00
tests ZTS: add userspace_send_encrypted.ksh to Makefile 2021-01-28 13:39:38 -08:00
udev Centralize variable substitution 2020-07-14 17:33:44 -07:00
.editorconfig Add an .editorconfig; document git whitespace settings 2020-01-27 13:32:52 -08:00
.gitignore Add FreeBSD support to OpenZFS 2020-04-14 11:36:28 -07:00
.gitmodules Add zimport.sh compatibility test script 2014-02-21 12:10:31 -08:00
AUTHORS Add zstd support to zfs 2020-08-20 10:30:06 -07:00
autogen.sh Cause autogen.sh to fail if autoreconf fails 2018-07-06 09:27:37 -07:00
CODE_OF_CONDUCT.md Replace ZFS on Linux references with OpenZFS 2020-10-08 20:10:13 -07:00
configure.ac Autoconf 2.70 compatibility 2021-01-02 16:55:55 -08:00
copy-builtin Replace ZFS on Linux references with OpenZFS 2020-10-08 20:10:13 -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 cppcheck: integrete cppcheck 2021-01-26 16:12:26 -08:00
META Linux 5.10 compat: META 2020-12-23 08:55:02 -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 docs: update README's installation link 2020-10-08 09:33:53 -07:00
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

README.md

img

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 12-STABLE and 13-CURRENT.