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Alexander Motin ca54e52122 Yield periodically when rebuilding L2ARC 
L2ARC devices of several terabytes filled with 4KB blocks may take 15
minutes to rebuild.  Due to the way L2ARC log reading is implemented
it is quite likely that for all that time rebuild thread will never
sleep.  At least on FreeBSD kernel threads have absolute priority and
can not be preempted by threads with lower priorities.  If some thread
is also bound to that specific CPU it may not get any CPU time for all
the 15 minutes.

Reviewed-by: Cedric Berger <cedric@precidata.com>
Reviewed-by: Ryan Moeller <freqlabs@FreeBSD.org>
Reviewed-by: George Amanakis <gamanakis@gmail.com>
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Alexander Motin <mav@FreeBSD.org>
Closes #11116
2020-10-30 16:04:53 -07:00
.github Update issue templates, commitcheck and Contributing.md 2020-10-30 15:56:58 -07:00
cmd Update references to nonexistent man pages in code 2020-10-30 16:04:41 -07:00
config blkg_tryget config test: initialize struct 2020-10-16 13:02:55 -07:00
contrib Replace ZFS on Linux references with OpenZFS 2020-10-16 13:01:24 -07:00
etc Replace ZFS on Linux references with OpenZFS 2020-10-16 13:01:24 -07:00
include Update references to nonexistent man pages in code 2020-10-30 16:04:41 -07:00
lib Update references to nonexistent man pages in code 2020-10-30 16:04:41 -07:00
man Update references to nonexistent man pages in code 2020-10-30 16:04:41 -07:00
module Yield periodically when rebuilding L2ARC 2020-10-30 16:04:53 -07:00
rpm Replace ZFS on Linux references with OpenZFS 2020-10-16 13:01:24 -07:00
scripts Fix commitcheck on FreeBSD 2020-10-30 15:57:03 -07:00
tests Update references to nonexistent man pages in code 2020-10-30 16:04:41 -07:00
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 2020-10-16 13:01:24 -07:00
configure.ac Linux: Initialize zp in zfs_setattr_dir 2020-10-16 13:01:29 -07:00
copy-builtin Replace ZFS on Linux references with OpenZFS 2020-10-16 13:01:24 -07:00
COPYRIGHT Fix typos 2020-06-09 21:24:09 -07:00
cppcheck-suppressions.txt Import ZStandard v1.4.5 2020-08-20 10:30:06 -07:00
LICENSE Update build system and packaging 2018-05-29 16:00:33 -07:00
Makefile.am Fix commitcheck on FreeBSD 2020-10-30 15:57:03 -07:00
META Tag 2.0.0-rc4 2020-10-19 11:28:28 -07:00
NEWS Fix NEWS file 2020-08-27 16:07:01 -07:00
NOTICE Update build system and packaging 2018-05-29 16:00:33 -07:00
README.md docs: update README's installation link 2020-10-16 13:00:13 -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.