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Brian Behlendorf fdcd952b4d Fix set block scheduler warnings 
There were two cases when attempting to set the vdev block device
scheduler which would causes console warnings.

The first case was when the vdev used a loop, ram, dm, or other
such device which doesn't support a configurable scheduler.  In
these cases attempting to set a scheduler is pointless and can
be safely skipped.

The secord case is slightly more troubling.  We were seeing
transient cases where setting the elevator would return -EFAULT.
On retry everything is fine so there appears to be a small window
where this is possible.  To handle that case we silently retry
up to three times before reporting the warning.

In all of the above cases the warning is harmless and at worse you
may see slightly different performance characteristics from one
or more of your vdevs.
2011-02-25 11:37:11 -08:00
cmd Use udev to create /dev/zvol/[dataset_name] links 2011-02-25 09:43:19 -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 Use udev to create /dev/zvol/[dataset_name] links 2011-02-25 09:43:19 -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 Fix set block scheduler warnings 2011-02-25 11:37:11 -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

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