OpenZFS on Linux and FreeBSD
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Brian Behlendorf c39498254d Extra reference required for dio struct in __vdev_disk_physio.
Exposed by the fc11 debug kernel we need to hold a reference over all
calls to submit_bio().  Otherwise it is possible all the completion
callbacks run before we exit __vdev_disk_physio(), and we end up with
a GPF.  This was quickly exposed when slab poisoning was enabled.  I
have added helper functions to cleanly track the reference counts.  In
addition dr->dr_ref was converted from an integer to an atomic type
which removes the need for the spinlock.  As a nice side effect of
these changes the code is now slightly cleaner and clearer.
2009-09-02 15:08:40 -07:00
cmd Merge commit 'refs/top-bases/zfs-branch' into zfs-branch 2009-08-18 12:10:55 -07:00
config Add zfs-test package which includes test infrastructure. 2009-08-17 21:35:06 -07:00
doc Refresh zfs-branch 2008-12-05 09:46:11 -08:00
lib Merge commit 'refs/top-bases/zfs-branch' into zfs-branch 2009-08-18 14:18:36 -07:00
module Extra reference required for dio struct in __vdev_disk_physio. 2009-09-02 15:08:40 -07:00
scripts Move ZPIOS chunk to linux-zpios topic branch 2009-08-18 14:06:05 -07:00
.topdeps Refresh linux-kernel-disk 2008-12-05 11:16:18 -08:00
.topmsg Add TODO 2009-01-21 11:26:19 -08:00
AUTHORS Refresh zfs-branch 2008-12-05 09:46:11 -08:00
COPYING Refresh for consistency with COPYRIGHT 2009-06-08 11:59:13 -07:00
COPYRIGHT Readd accidentally dropped COPYRIGHT, it just references the 2009-06-08 11:01:13 -07:00
ChangeLog Refresh ChangeLog 2009-08-04 15:45:48 -07:00
DISCLAIMER Initial Linux ZFS GIT Repo 2008-11-20 12:01:55 -08:00
GIT Refresh type in topgit git://* reference 2009-01-26 21:58:32 -08:00
META Tag zfs-0.4.5. 2009-08-04 14:56:40 -07:00
Makefile.am Install zfs_config, zfs_unconfig, symbols in to correct location. 2009-07-01 12:51:06 -07:00
OPENSOLARIS.LICENSE Add CDDL license file 2008-12-01 14:49:34 -08:00
README Refresh README 2009-01-20 16:16:57 -08:00
TODO Tag zfs-0.4.5 for real 2009-08-04 16:12:28 -07:00
ZFS.RELEASE Rebase master to b121 2009-08-18 11:43:27 -07:00
autogen.sh Core target arch support for conditional compilation of SUBDIRs 2009-06-08 16:07:43 -07:00
configure.ac Move ZPIOS chunk to linux-zpios topic branch 2009-08-18 14:06:05 -07:00
zfs-modules.spec.in Various spec file tweaks to handle rpm building of several distros. 2009-08-14 16:22:20 -07:00
zfs.spec.in Add zfs-test package which includes test infrastructure. 2009-08-17 21:35:06 -07:00
zfs_unconfig.h Distro friendly build system / packaging improvements. 2009-07-01 10:53:05 -07:00

README

============================ ZFS KERNEL BUILD ============================

1) Build the SPL (Solaris Porting Layer) module which is designed to
   provide many Solaris APIs in the Linux kernel which are needed
   by ZFS.  To build the SPL:

        tar -xzf spl-x.y.z.tgz
        cd spl-x.y.z
        ./configure --with-linux=<kernel src>
        make
        make check <as root>

2) Build ZFS, this port is based on build specified by the ZFS.RELEASE
   file.  You will need to have both the kernel and SPL source available.
   To build ZFS for use as a Linux kernel module.

        tar -xzf zfs-x.y.z.tgz
        cd zfs-x.y.z
        ./configure --with-linux=<kernel src> \
                    --with-spl=<spl src>
        make
        make check <as root>

============================ ZPIOS TEST SUITE ============================

3) Provided is an in-kernel test application called zpios which can be
   used to simulate a parallel IO load.  It may be used as a stress 
   or performance test for your configuration.  To simplify testing
   scripts provided in the scripts/ directory which provide a few
   pre-built zpool configurations and zpios test cases.  By default
   'make check' as root will run a simple test against several small
   loopback devices created in /tmp/.

       cd scripts
       ./zfs.sh					# Load the ZFS/SPL modules
       ./zpios.sh -c lo-raid0.sh -t tiny -v 	# Tiny zpios loopback test
       ./zfs.sh -u				# Unload the ZFS/SPL modules

Enjoy,
Brian Behlendorf <behlendorf1@llnl.gov>