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Richard Yao 19a47cb1c2 Call dmu_read_uio_dbuf() in zvol_read() 
The difference between `dmu_read_uio()` and `dmu_read_uio_dbuf()` is
that the former takes a hold while the latter uses an existing hold.
`zfs_read()` in the ZPL will use `dmu_read_uio_dbuf()` while
our analogous `zvol_write()` will use `dmu_write_uio_dbuf()`, but for no
apparent reason, we inherited a `zvol_read()` function from
OpenSolaris that does `dmu_read_uio()`. illumos-gate also still
uses `dmu_read_uio()` to this day. Lets switch to `dmu_read_uio_dbuf()`,
which is more performant.

Signed-off-by: Richard Yao <ryao@gentoo.org>
Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Tim Chase <tim@chase2k.com>
Signed-off-by: Chunwei Chen <tuxoko@gmail.com>
Closes #4316
2016-02-18 10:24:33 -08:00
cmd Illumos 5767 - fix several problems with zfs test suite 2016-02-08 09:37:55 -08:00
config Make configure error clearer when failing to find SPL 2016-02-17 10:50:29 -08:00
contrib Activate LVM volume groups before looking for zpools. 2015-12-18 13:46:23 -08:00
etc zfs-import: Perform verbatim import using cache file 2015-10-13 10:37:05 -07:00
include Illumos 6414 - vdev_config_sync could be simpler 2016-01-28 12:44:39 -05:00
lib Prevent zpool_find_vdev() from truncating vdev path 2016-02-08 09:37:55 -08:00
man Reintroduce zfs_remove() synchronous deletes 2016-01-26 15:26:02 -08:00
module Call dmu_read_uio_dbuf() in zvol_read() 2016-02-18 10:24:33 -08:00
rpm Create zfs-kmod-debuginfo rpm with redhat spec file 2016-01-21 11:20:06 -08:00
scripts zimport.sh: Add configure/make option support 2015-11-16 16:10:07 -08:00
udev Support parallel build trees (VPATH builds) 2015-07-17 13:42:51 -07:00
.gitignore Ignore *.{deb,rpm,tar.gz} files in the top directory. 2013-04-24 16:18:59 -07:00
.gitmodules Add zimport.sh compatibility test script 2014-02-21 12:10:31 -08:00
AUTHORS Add a missing > to AUTHORS 2014-09-02 14:18:53 -07:00
autogen.sh build: do not call boilerplate ourself 2013-04-02 10:55:20 -07:00
configure.ac Move dracut directory to contrib 2015-07-09 13:59:37 -07:00
copy-builtin Fix --enable-linux-builtin 2015-12-02 07:54:32 -08:00
COPYRIGHT Update ZED copyright boilerplate 2015-05-11 15:07:00 -07:00
DISCLAIMER Fix minor typos and update marketing copy. 2013-03-21 12:51:06 -07:00
Makefile.am Support parallel build trees (VPATH builds) 2015-07-17 13:42:51 -07:00
META Tag zfs-0.6.5 2015-09-11 11:16:38 -07:00
OPENSOLARIS.LICENSE Add CDDL license file 2008-12-01 14:49:34 -08:00
README.markdown Fix minor typos and update marketing copy. 2013-03-21 12:51:06 -07:00
TEST Illumos 6319 - assertion failed in zio_ddt_write: bp->blk_birth == txg 2016-01-12 09:10:52 -08:00
zfs-script-config.sh.in Initial implementation of zed (ZFS Event Daemon) 2014-04-02 13:10:03 -07:00
zfs.release.in Move zfs.release generation to configure step 2012-07-12 12:22:51 -07:00

README.markdown

Native ZFS for Linux!

ZFS is an advanced file system and volume manager which was originally developed for Solaris and is now maintained by the Illumos community.

ZFS on Linux, which is also known as ZoL, is currently feature complete. It includes fully functional and stable SPA, DMU, ZVOL, and ZPL layers.

Full documentation for installing ZoL on your favorite Linux distribution can be found at: http://zfsonlinux.org