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Alexander Motin 1af240f3b5 Add separate aggregation limit for non-rotating media 
Before sequential scrub patches ZFS never aggregated I/Os above 128KB.
Sequential scrub bumped that to 1MB, supposedly to reduce number of
head seeks for spinning disks.  But for SSDs it makes little to no
sense, especially on FreeBSD, where due to MAXPHYS limitation device
will likely still see bunch of 128KB I/Os instead of one large.
Having more strict aggregation limit for SSDs allows to avoid
allocation of large memory buffer and copy to/from it, that is a
serious problem when throughput reaches gigabytes per second.

Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Reviewed-by: Richard Elling <Richard.Elling@RichardElling.com>
Signed-off-by:	Alexander Motin <mav@FreeBSD.org>
Closes #8494
2019-03-13 12:00:10 -07:00
.github Update CONTRIBUTING to point users to IRC as well as mailing list 2019-03-13 11:57:57 -07:00
cmd Make zstreamdump -v more greppable 2019-03-13 11:19:23 -07:00
config kernel_fpu fixes 2019-03-06 16:03:03 -08:00
contrib initramfs/debian: use panic() instead of directly calling /bin/sh 2019-02-28 12:05:55 -08:00
etc Remove zfs-zed hard dep from zfs-share init script 2019-02-28 12:07:03 -08:00
include Detect and prevent mixed raw and non-raw sends 2019-03-13 11:00:43 -07:00
lib Detect and prevent mixed raw and non-raw sends 2019-03-13 11:00:43 -07:00
man Add separate aggregation limit for non-rotating media 2019-03-13 12:00:10 -07:00
module Add separate aggregation limit for non-rotating media 2019-03-13 12:00:10 -07:00
rpm Add diffutils dependency for dkms build 2019-02-20 10:04:05 -08:00
scripts OpenZFS 9185 - Enable testing over NFS in ZFS performance tests 2019-02-04 09:27:37 -08:00
tests Make zstreamdump -v more greppable 2019-03-13 11:19:23 -07:00
udev Add enclosure_symlinks option to vdev_id 2018-12-14 17:27:49 -08:00
.gitignore Verify .gitignore entries 2019-01-15 11:56:29 -08:00
.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 config: better libtirpc detection 2019-03-02 16:19:05 -08:00
copy-builtin Allow copy-builtin to work with modified sources 2018-10-17 12:06:05 -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 Verify .gitignore entries 2019-01-15 11:56:29 -08:00
META Tag 0.8.0-rc3 2019-01-14 12:40:42 -08:00
NEWS Add NEWS file 2018-09-18 12:03:47 -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

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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.