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Brian Behlendorf 44867b6d6e Improve zpool import search behavior
The goal of this change is to make 'zpool import' prefer to use
the peristent /dev/mapper or /dev/disk/by-* paths.  These are far
preferable to the devices in /dev/ whos names are not persistent
and are determined by the order in which a device is detected.

This patch improves things by changing the default search path from
just to the top level /dev/ directory to (in order):

  /dev/disk/by-vdev   - Custom rules, use first if they exist
  /dev/disk/zpool     - Custom rules, use first if they exist
  /dev/mapper         - Use multipath devices before components
  /dev/disk/by-uuid   - Single unique entry and persistent
  /dev/disk/by-id     - May be multiple entries and persistent
  /dev/disk/by-path   - Encodes physical location and persistent
  /dev/disk/by-label  - Custom persistent labels
  /dev                - UNSAFE device names will change

The default search path can be overriden by setting the
ZPOOL_IMPORT_PATH environment variable.  This must be a colon
delimited list of paths which are searched for vdevs.  If the
'zpool import -d' option is specified only those listed paths
will be searched.

Finally, when multiple paths to the same device are found.  If one
of the paths is an exact match for the path used last time to import
the pool it will be used.  When there are no exact matches the
prefered path will be determined by the provided search order.

This means you can still import a pool and force specific names by
providing the -d <path> option.  And the prefered names will persist
as long as those paths exist on your system.

Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov>
Closes #965
2012-09-17 13:49:07 -07:00
cmd Improve zpool import search behavior 2012-09-17 13:49:07 -07:00
config Revert "Improve AF hard disk detection" 2012-09-11 16:33:49 -07:00
dracut Remove autotools products 2012-08-27 11:47:44 -07:00
etc Remove autotools products 2012-08-27 11:47:44 -07:00
include Revert "Improve AF hard disk detection" 2012-09-11 16:33:49 -07:00
lib Improve zpool import search behavior 2012-09-17 13:49:07 -07:00
man Add zstreamdump(8) command to examine ZFS send streams. 2012-09-02 14:54:27 -07:00
module Switch KM_SLEEP to KM_PUSHPAGE 2012-09-17 11:22:23 -07:00
patches Adding grub2 mkconfig support patch 2012-07-30 16:17:23 -07:00
scripts Remove autotools products 2012-08-27 11:47:44 -07:00
udev Remove autotools products 2012-08-27 11:47:44 -07:00
.gitignore Remove autotools products 2012-09-11 10:15:13 -07:00
AUTHORS Add "ashift" property to zpool create 2011-06-17 16:35:49 -07:00
autogen.sh Remove autotools products 2012-08-27 11:47:44 -07:00
ChangeLog Add build system 2010-08-31 13:41:27 -07:00
configure.ac Add zstreamdump(8) command to examine ZFS send streams. 2012-09-02 14:54:27 -07:00
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 Add copy-builtin to EXTRA_DIST 2012-08-23 09:50:00 -07:00
META ZFS 0.6.0-rc10 2012-08-14 08:38:19 -07:00
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 Fix man page installation path 2012-08-10 15:32:30 -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

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