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53cf50e081
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Brian Behlendorf 53cf50e081 Set stat->st_dev and statfs->f_fsid 
Filesystems like ZFS must use what the kernel calls an anonymous super
block.  Basically, this is just a filesystem which is not backed by a
single block device.  Normally this block device's dev_t is stored in
the super block.  For anonymous super blocks a unique reserved dev_t
is assigned as part of get_sb().

This sb->s_dev must then be set in the returned stat structures as
stat->st_dev.  This allows userspace utilities to easily detect the
boundries of a specific filesystem.  Tools such as 'du' depend on this
for proper accounting.

Additionally, under OpenSolaris the statfs->f_fsid is set to the device
id.  To preserve consistency with OpenSolaris we also set the fsid to
the device id.  Other Linux filesystem (ext) set the fsid to a unique
value determined by the filesystems uuid.  This value is unique but
maintains no relationship to the device id.  This may be desirable
when exporting NFS filesystem because it minimizes to chance of a
client observing the same fsid from two different servers.

Closes #140
2011-03-07 16:06:22 -08:00
cmd Add xvattr support 2011-03-02 11:43:50 -08:00
config Make Missing Modules.symvers Fatal 2011-03-07 13:09:20 -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 Add missing libspl+libzpool libs to libzfs 2011-03-03 15:48:57 -08:00
man Linux 2.6.38 compat, blkdev_get_by_path() 2011-02-23 12:29:38 -08:00
module Set stat->st_dev and statfs->f_fsid 2011-03-07 16:06:22 -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 Make Missing Modules.symvers Fatal 2011-03-07 13:09:20 -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

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

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