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Don Brady dae3e9ea21 OpenZFS 9465 - ARC check for 'anon_size > arc_c/2' can stall the system 
In the case of one pool being built on another pool, we want
to make sure we don't end up throttling the lower (backing)
pool when the upper pool is the majority contributor to dirty
data. To insure we make forward progress during throttling, we
also check the current pool's net dirty data and only throttle
if it exceeds zfs_arc_pool_dirty_percent of the anonymous dirty
data in the cache.

Authored by: Don Brady <don.brady@delphix.com>
Reviewed by: Sebastien Roy <sebastien.roy@delphix.com>
Reviewed by: Matt Ahrens <matt@delphix.com>
Reviewed by: Prashanth Sreenivasa <pks@delphix.com>
Approved by: Robert Mustacchi <rm@joyent.com>
Ported-by: Brian Behlendorf <behlendorf1@llnl.gov>

Porting Notes:
* The new global variables zfs_arc_dirty_limit_percent,
  zfs_arc_anon_limit_percent, and zfs_arc_pool_dirty_percent
  were intentially not added as tunable module parameters.

OpenZFS-issue: https://illumos.org/issues/9465
OpenZFS-commit: https://github.com/openzfs/openzfs/commit/d6a4c3ef
Closes #7749
2018-07-30 11:30:41 -07:00
.github PR's should provide motivation & context first 2018-07-23 22:08:18 -07:00
cmd OpenZFS 9580 - Add a hash-table on top of nvlist to speed-up operations 2018-07-30 11:30:03 -07:00
config Add support for autoexpand property 2018-07-23 15:40:15 -07:00
contrib Fix initramfs missing systemd binaries 2018-07-27 09:29:43 -07:00
etc Minor documentation, logging, and testing typos 2018-06-07 09:38:39 -07:00
include OpenZFS 9465 - ARC check for 'anon_size > arc_c/2' can stall the system 2018-07-30 11:30:41 -07:00
lib OpenZFS 9580 - Add a hash-table on top of nvlist to speed-up operations 2018-07-30 11:30:03 -07:00
man OpenZFS 8906 - uts: illumos rootfs should support salted cksum 2018-07-27 08:35:28 -07:00
module OpenZFS 9465 - ARC check for 'anon_size > arc_c/2' can stall the system 2018-07-30 11:30:41 -07:00
rpm Update build system and packaging 2018-05-29 16:00:33 -07:00
scripts OpenZFS 9330 - stack overflow when creating a deeply nested dataset 2018-07-09 13:02:50 -07:00
tests OpenZFS 9438 - Holes can lose birth time info if a block has a mix of birth times 2018-07-30 09:27:49 -07:00
udev Add kernel module auto-loading 2018-03-13 10:45:55 -07:00
.gitignore Ignore *.o.ur-safe build artifacts 2018-05-13 18:59:02 -07:00
.gitmodules Add zimport.sh compatibility test script 2014-02-21 12:10:31 -08:00
.travis.yml Add .travis.yml 2017-11-13 09:18:18 -08:00
AUTHORS Update build system and packaging 2018-05-29 16:00:33 -07:00
autogen.sh Cause autogen.sh to fail if autoreconf fails 2018-07-06 09:27:37 -07:00
configure.ac OpenZFS 9166 - zfs storage pool checkpoint 2018-06-26 10:07:42 -07:00
copy-builtin copy-builtin: SPL must be in Kbuild first 2018-06-15 15:16:29 -07:00
COPYRIGHT Update build system and packaging 2018-05-29 16:00:33 -07:00
LICENSE Update build system and packaging 2018-05-29 16:00:33 -07:00
Makefile.am make install only works once 2018-05-31 09:19:59 -07:00
META Linux compat 4.18: check_disk_size_change() 2018-06-15 15:05:21 -07:00
NOTICE Update build system and packaging 2018-05-29 16:00:33 -07:00
README.md Explicitly state supported Linux versions 2018-05-30 20:11:19 -07:00
TEST Update build system and packaging 2018-05-29 16:00:33 -07:00
zfs.release.in Move zfs.release generation to configure step 2012-07-12 12:22:51 -07:00

README.md

img

ZFS on Linux is an advanced file system and volume manager which was originally developed for Solaris and is now maintained by the OpenZFS community.

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Official Resources

Installation

Full documentation for installing ZoL on your favorite Linux distribution can be found at our site.

Contribute & Develop

We have a separate document with contribution guidelines.

Release

ZFS on Linux 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 kernel versions.