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RageLtMan 5731140eaf Disable write merging on ZVOLs 
The current ZVOL implementation does not explicitly set merge
options on ZVOL device queues, which results in the default merge
behavior.

Explicitly set QUEUE_FLAG_NOMERGES on ZVOL queues allowing the
ZIO pipeline to do its work.

Initial benchmarks (tiotest with no O_DIRECT) show random write
performance going up almost 3X on 8K ZVOLs, even after significant
rewrites of the logical space allocation.

Reviewed-by: Richard Yao <ryao@gentoo.org>
Reviewed-by: Chunwei Chen <david.chen@osnexus.com>
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: RageLtMan <rageltman@sempervictus>
Issue #5902
2017-05-04 17:59:52 -04:00
.github
Commit message format in contributing guidelines
2017-03-31 09:33:38 -07:00
cmd
More ashift improvements
2017-05-03 09:31:05 -07:00
config
Linux 4.12 compat: super_setup_bdi_name()
2017-05-02 09:46:18 -07:00
contrib
Fix initramfs hook for merged /usr/lib and /lib
2017-02-27 12:03:23 -08:00
etc
OpenZFS 7793 - ztest fails assertion in dmu_tx_willuse_space
2017-03-07 09:51:59 -08:00
include
More ashift improvements
2017-05-03 09:31:05 -07:00
lib
More ashift improvements
2017-05-03 09:31:05 -07:00
man
More ashift improvements
2017-05-03 09:31:05 -07:00
module
Disable write merging on ZVOLs
2017-05-04 17:59:52 -04:00
rpm
Prebaked scripts for zpool status/iostat -c
2017-04-21 09:27:04 -07:00
scripts
OpenZFS 7503 - zfs-test should tail ::zfs_dbgmsg on test failure
2017-04-12 13:36:48 -07:00
tests
Update rsend_014_pos and send-c_volume test cases
2017-05-04 14:32:43 -07:00
udev
Fix spelling
2017-01-03 11:31:18 -06:00
.gitignore
OpenZFS 7290 - ZFS test suite needs to control what utilities it can run
2017-04-06 09:25:36 -07:00
.gitmodules
Add zimport.sh compatibility test script
2014-02-21 12:10:31 -08:00
AUTHORS
Add a missing > to AUTHORS
2014-09-02 14:18:53 -07:00
autogen.sh
build: do not call boilerplate ourself
2013-04-02 10:55:20 -07:00
configure.ac
OpenZFS 7503 - zfs-test should tail ::zfs_dbgmsg on test failure
2017-04-12 13:36:48 -07:00
copy-builtin
Allow c99 when building ZFS in the kernel tree
2017-03-27 12:31:15 -07:00
COPYRIGHT
Update ZED copyright boilerplate
2015-05-11 15:07:00 -07:00
DISCLAIMER
Fix minor typos and update marketing copy.
2013-03-21 12:51:06 -07:00
Makefile.am
Prebaked scripts for zpool status/iostat -c
2017-04-21 09:27:04 -07:00
META
Tag 0.7.0-rc3
2017-01-20 10:18:28 -08:00
OPENSOLARIS.LICENSE
Add CDDL license file
2008-12-01 14:49:34 -08:00
README.markdown
Add CONTRIBUTING information and templates
2016-12-09 12:48:12 -07:00
TEST
Skip xfstests on Amazon Linux
2017-04-06 17:15:30 -07:00
zfs-script-config.sh.in
Prebaked scripts for zpool status/iostat -c
2017-04-21 09:27:04 -07:00
zfs.release.in
Move zfs.release generation to configure step
2012-07-12 12:22:51 -07:00

README.markdown

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

ZFS on Linux, which is also known as ZoL, is currently feature complete. It includes fully functional and stable SPA, DMU, ZVOL, and ZPL layers. And it's native!

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.

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