OpenZFS on Linux and FreeBSD
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jxiong a2c9518711 Guarantee PAGESIZE alignment for large zio buffers
In current implementation, only zio buffers in 16KB and bigger are
guaranteed PAGESIZE alignment. This breaks Lustre since it assumes
that 'arc_buf_t::b_data' must be page aligned when zio buffers are
greater than or equal to PAGESIZE.

This patch will make the zio buffers to be PAGESIZE aligned when
the sizes are not less than PAGESIZE.

This change may cause a little bit memory waste but that should be
fine because after ABD is introduced, zio buffers are used to hold
data temporarily and live in memory for a short while.

Reviewed-by: Don Brady <don.brady@intel.com>
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Jinshan Xiong <jinshan.xiong@gmail.com>
Signed-off-by: Jinshan Xiong <jinshan.xiong@intel.com>
Closes #6084
2017-06-09 14:05:15 -07:00
cmd zdb: segfault in dump_bpobj_subobjs() 2017-06-09 14:05:15 -07:00
config Fix loop device becomes read-only 2017-06-09 14:05:15 -07:00
contrib Init script fixes 2015-09-29 15:27:14 -07:00
etc Fix zfs-mount.service failure on boot 2017-06-09 14:05:15 -07:00
include Fix harmless "BARRIER is deprecated" kernel warning on Centos 6.8 2017-06-09 14:05:15 -07:00
lib Fix atomic_sub_64() i386 assembly implementation 2017-06-09 14:05:15 -07:00
man Add tunable to ignore hole_birth (enabled by default) 2016-09-09 13:20:54 -07:00
module Guarantee PAGESIZE alignment for large zio buffers 2017-06-09 14:05:15 -07:00
rpm Prepare to release 0.6.5.9 2017-02-03 13:11:42 -08:00
scripts Add support for asynchronous zvol minor operations 2016-03-22 18:08:04 -07:00
udev Support parallel build trees (VPATH builds) 2015-07-17 13:42:51 -07:00
.gitignore Ignore *.{deb,rpm,tar.gz} files in the top directory. 2013-04-24 16:18:59 -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
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
META Prepare to release 0.6.5.9 2017-02-03 13:11:42 -08:00
Makefile.am Add `make lint` target 2016-09-05 16:07:08 -07:00
OPENSOLARIS.LICENSE Add CDDL license file 2008-12-01 14:49:34 -08:00
README.markdown Fix minor typos and update marketing copy. 2013-03-21 12:51:06 -07:00
TEST Follow 0/-E convention for module load errors 2015-12-23 17:29:35 -08:00
autogen.sh build: do not call boilerplate ourself 2013-04-02 10:55:20 -07:00
configure.ac Move dracut directory to contrib 2015-07-09 13:59:37 -07:00
copy-builtin Fix --enable-linux-builtin 2015-12-23 17:29:34 -08:00
zfs-script-config.sh.in Initial implementation of zed (ZFS Event Daemon) 2014-04-02 13:10:03 -07:00
zfs.release.in Move zfs.release generation to configure step 2012-07-12 12:22:51 -07:00

README.markdown

Native ZFS for Linux!

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.

Full documentation for installing ZoL on your favorite Linux distribution can be found at: http://zfsonlinux.org