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Brian Behlendorf 0c5493d470 Add zfs_arc_memory_throttle_disable module option 
The way in which virtual box ab(uses) memory can throw off the
free memory calculation in arc_memory_throttle().  The result is
the txg_sync thread will effectively spin waiting for memory to
be released even though there's lots of memory on the system.

To handle this case I'm adding a zfs_arc_memory_throttle_disable
module option largely for virtual box users.  Setting this option
disables free memory checks which allows the txg_sync thread to
make progress.

By default this option is disabled to preserve the current
behavior.  However, because Linux supports direct memory reclaim
it's doubtful throttling due to perceived memory pressure is ever
a good idea.  We should enable this option by default once we've
done enough real world testing to convince ourselve there aren't
any unexpected side effects.

Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov>
Closes #938
2013-02-01 11:17:14 -08:00
cmd Honor 80 character limit in 'zpool status' 2013-01-31 11:06:57 -08:00
config Remove NPTL_GUARD_WITHIN_STACK 2013-01-29 10:58:20 -08:00
dracut Retire zpool_id infrastructure 2013-01-29 12:23:17 -08:00
etc Retire zpool_id infrastructure 2013-01-29 12:23:17 -08:00
include Retire zpool_id infrastructure 2013-01-29 12:23:17 -08:00
lib Retire zpool_id infrastructure 2013-01-29 12:23:17 -08:00
man Illumos #3035 LZ4 compression support in ZFS and GRUB 2013-01-29 09:28:20 -08:00
module Add zfs_arc_memory_throttle_disable module option 2013-02-01 11:17:14 -08:00
patches Adding grub2 mkconfig support patch 2012-07-30 16:17:23 -07:00
scripts Retire zpool_id infrastructure 2013-01-29 12:23:17 -08:00
udev Retire zpool_id infrastructure 2013-01-29 12:23:17 -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 Retire zpool_id infrastructure 2013-01-29 12:23:17 -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 Retire zpool_id infrastructure 2013-01-29 12:23:17 -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 Retire zpool_id infrastructure 2013-01-29 12:23:17 -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 Retire zpool_id infrastructure 2013-01-29 12:23:17 -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