aebe6818a9
At last a useful user space interface for the Linux ZFS port arrives. With the addition of the ZVOL real ZFS based block devices are available and can be compared head to head with Linux's MD and LVM block drivers. The Linux ZVOL has not yet had any performance work done but from a user perspective it should be functionally complete and behave like any other Linux block device. The ZVOL has so far been tested using zconfig.sh on the following x86_64 based platforms: FC11, CHAOS4, RHEL5, RHEL6, and SLES11. However, more testing is required to ensure everything is working as designed. What follows in a somewhat detailed list of changes includes in this commit to make ZVOL's possible. A few other issues were addressed in the context of these changes which will also be mentioned. * zvol_create_link_common() simplified to simply issue to ioctl to create the device and then wait up to 10 seconds for it to appear. The device will be created within a few miliseconds by udev under /dev/<pool>/<volume>. Note this naming convention is slightly different than on Solaris by I feel is more Linuxy. * Removed support for dump vdevs. This concept is specific to Solaris and done not map cleanly to Linux. Under Linux generating system cores is perferably done over the network via netdump, or alternately to a block device via O_DIRECT. |
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| cmd | ||
| config | ||
| doc | ||
| lib | ||
| module | ||
| patches | ||
| scripts | ||
| .topdeps | ||
| .topmsg | ||
| AUTHORS | ||
| COPYING | ||
| COPYRIGHT | ||
| ChangeLog | ||
| DISCLAIMER | ||
| GIT | ||
| META | ||
| Makefile.am | ||
| OPENSOLARIS.LICENSE | ||
| README | ||
| TODO | ||
| ZFS.RELEASE | ||
| autogen.sh | ||
| configure.ac | ||
| zfs-modules.spec.in | ||
| zfs.spec.in | ||
| zfs_unconfig.h | ||
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>