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Eric Dillmann 9759c60f1a Illumos #3035 LZ4 compression support in ZFS and GRUB 
3035 LZ4 compression support in ZFS and GRUB

Reviewed by: Matthew Ahrens <mahrens@delphix.com>
Reviewed by: Christopher Siden <christopher.siden@delphix.com>
Reviewed by: George Wilson <george.wilson@delphix.com>
Approved by: Christopher Siden <csiden@delphix.com>

References:
  illumos/illumos-gate@a6f561b4ae
  https://www.illumos.org/issues/3035
  http://wiki.illumos.org/display/illumos/LZ4+Compression+In+ZFS

This patch has been slightly modified from the upstream Illumos
version to be compatible with Linux.  Due to the very limited
stack space in the kernel a lz4 workspace kmem cache is used.
Since we are using gcc we are also able to take advantage of the
gcc optimized __builtin_ctz functions.

Support for GRUB has been dropped from this patch.  That code
is available but those changes will need to made to the upstream
GRUB package.

Lastly, several hunks of dead code were dropped for clarity.  They
include the functions real_LZ4_uncompress(), LZ4_compressBound()
and the Visual Studio specific hunks wrapped in _MSC_VER.

Ported-by: Eric Dillmann <eric@jave.fr>
Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov>
Closes #1217
2013-01-29 09:28:20 -08:00
cmd vdev_id: improve keyword parsing flexibility 2013-01-25 13:44:32 -08:00
config Linux 2.6.26 compat, lookup_bdev() 2013-01-28 15:35:00 -08:00
dracut Remove autotools products 2012-08-27 11:47:44 -07:00
etc vdev_id support for device link aliases 2012-12-03 14:04:47 -08:00
include Illumos #3035 LZ4 compression support in ZFS and GRUB 2013-01-29 09:28:20 -08:00
lib Illumos #3035 LZ4 compression support in ZFS and GRUB 2013-01-29 09:28:20 -08:00
man Illumos #3035 LZ4 compression support in ZFS and GRUB 2013-01-29 09:28:20 -08:00
module Illumos #3035 LZ4 compression support in ZFS and GRUB 2013-01-29 09:28:20 -08:00
patches Adding grub2 mkconfig support patch 2012-07-30 16:17:23 -07:00
scripts Quiet mkfs.ext2 output 2013-01-28 15:36:02 -08:00
udev Update 69-vdev.rules .gitignore 2012-12-14 12:16:42 -08:00
.gitignore Remove autotools products 2012-09-11 10:15:13 -07:00
AUTHORS Refresh AUTHORS 2012-12-19 09:47:25 -08:00
autogen.sh Remove autotools products 2012-08-27 11:47:44 -07:00
configure.ac Add /sbin/fsck.zfs helper 2013-01-09 16:54:58 -08:00
copy-builtin Consistent menuconfig name 2012-08-26 13:49:37 -07:00
COPYING Relocate COPYING+COPYRIGHT, remove README cruft 2008-12-01 15:34:53 -08:00
COPYRIGHT Update COPYRIGHT to reference zpios CDDL exceptions. 2010-05-18 14:25:28 -07:00
DISCLAIMER Update COPYRIGHT and DISCLAIMER. 2010-05-18 10:32:23 -07:00
dkms.conf.in Support building a zfs-modules-dkms sub package 2012-08-08 15:21:01 -07:00
dkms.postinst Support building a zfs-modules-dkms sub package 2012-08-08 15:21:01 -07:00
Makefile.am Do not use KERNEL_DIR env var in Makefile.am 2012-12-17 09:45:47 -08:00
META ZFS 0.6.0-rc13 2012-12-20 11:02:24 -08:00
OPENSOLARIS.LICENSE Add CDDL license file 2008-12-01 14:49:34 -08:00
PKGBUILD-zfs-modules.in Add make rule for building Arch Linux packages 2011-12-14 19:14:23 -08:00
PKGBUILD-zfs.in Add make rule for building Arch Linux packages 2011-12-14 19:14:23 -08:00
README.markdown Add script for builtin module building. 2012-07-26 13:45:09 -07:00
zfs-modules.spec.in Cleanly remove zfs-modules-devel headers 2012-08-13 16:35:26 -07:00
zfs-script-config.sh.in Unconditionally load core kernel modules 2010-11-11 11:38:25 -08:00
ZFS.RELEASE Update to onnv_147 2010-08-26 14:24:34 -07:00
zfs.release.in Move zfs.release generation to configure step 2012-07-12 12:22:51 -07:00
zfs.spec.in Remove the ChangeLog 2012-12-19 09:27:50 -08:00

README.markdown

Native ZFS for Linux! ZFS is an advanced file system and volume manager which was originally developed for Solaris. It has been successfully ported to FreeBSD and now there is a functional Linux ZFS kernel port too. The port currently includes a fully functional and stable SPA, DMU, and ZVOL with a ZFS Posix Layer (ZPL) on the way!

$ ./configure
$ make pkg

To copy the kernel code inside your kernel source tree for builtin compilation:

$ ./configure --enable-linux-builtin --with-linux=/usr/src/linux-...
$ ./copy-builtin /usr/src/linux-...

Full documentation for building, configuring, and using ZFS can be found at: http://zfsonlinux.org