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Brian Behlendorf 5484965ab6 Drop HAVE_XVATTR macros
When I began work on the Posix layer it immediately became clear to
me that to integrate cleanly with the Linux VFS certain Solaris
specific things would have to go.  One of these things was to elimate
as many Solaris specific types from the ZPL layer as possible.  They
would be replaced with their Linux equivalents.  This would not only
be good for performance, but for the general readability and health of
the code.  The Solaris and Linux VFS are different beasts and should
be treated as such.  Most of the code remains common for constructing
transactions and such, but there are subtle and important differenced
which need to be repsected.

This policy went quite for for certain types such as the vnode_t,
and it initially seemed to be working out well for the vattr_t.  There
was a relatively small amount of related xvattr_t code I was forced to
comment out with HAVE_XVATTR.  But it didn't look that hard to come
back soon and replace it all with a native Linux type.

However, after going doing this path with xvattr some distance it
clear that this code was woven in the ZPL more deeply than I thought.
In particular its hooks went very deep in to the ZPL replay code
and replacing it would not be as easy as I originally thought.

Rather than continue persuing replacing and removing this code I've
taken a step back and reevaluted things.  This commit reverts many of
my previous commits which removed xvattr related code.  It restores
much of the code to its original upstream state and now relies on
improved xvattr_t support in the zfs package itself.

The result of this is that much of the code which I had commented
out, which accidentally broke things like replay, is now back in
place and working.  However, there may be a small performance
impact for getattr/setattr operations because they now require
a translation from native Linux to Solaris types.  For now that's
a price I'm willing to pay.  Once everything is completely functional
we can revisting the issue of removing the vattr_t/xvattr_t types.

Closes #111
2011-03-02 11:44:34 -08:00
cmd Add xvattr support 2011-03-02 11:43:50 -08:00
config Linux 2.6.38 compat, blkdev_get_by_path() 2011-02-23 12:29:38 -08:00
etc Use udev to create /dev/zvol/[dataset_name] links 2011-02-25 09:43:19 -08:00
include Drop HAVE_XVATTR macros 2011-03-02 11:44:34 -08:00
lib Linux 2.6.38 compat, blkdev_get_by_path() 2011-02-23 12:29:38 -08:00
man Linux 2.6.38 compat, blkdev_get_by_path() 2011-02-23 12:29:38 -08:00
module Drop HAVE_XVATTR macros 2011-03-02 11:44:34 -08:00
patches Add build system 2010-08-31 13:41:27 -07:00
scripts Linux 2.6.38 compat, blkdev_get_by_path() 2011-02-23 12:29:38 -08:00
.gitignore Ignore unsigned module build products 2010-03-09 14:14:09 -08:00
AUTHORS Update AUTHORS file 2011-02-10 09:27:22 -08:00
autogen.sh Minor packaging fixes 2010-09-01 15:42:32 -07:00
ChangeLog Add build system 2010-08-31 13:41:27 -07:00
configure Use udev to create /dev/zvol/[dataset_name] links 2011-02-25 09:43:19 -08:00
configure.ac Use udev to create /dev/zvol/[dataset_name] links 2011-02-25 09:43:19 -08:00
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
Makefile.am Support custom build directories and move includes 2010-09-08 12:38:56 -07:00
Makefile.in Linux 2.6.38 compat, blkdev_get_by_path() 2011-02-23 12:29:38 -08:00
META Prep zfs-0.6.0-rc1 tag 2011-02-18 09:33:12 -08:00
OPENSOLARIS.LICENSE Add CDDL license file 2008-12-01 14:49:34 -08:00
README.markdown Fix markdown rendering 2010-09-15 09:09:37 -07:00
zfs_config.h.in Linux 2.6.38 compat, blkdev_get_by_path() 2011-02-23 12:29:38 -08:00
zfs-modules.spec.in Use top level object directory in zfs-module.spec 2010-09-10 12:33:31 -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.spec.in Support custom build directories and move includes 2010-09-08 12:38:56 -07:00

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

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