Merge commit 'refs/top-bases/linux-unused' into linux-unused
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Brian Behlendorf
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README
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README
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============================ ZFS QUICK START ============================
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1) Build the SPL (Solaris Porting Layer) and install it. This package
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provides several Solaris APIs used by ZFS and is a required dependency.
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Before building ZFS build this package and install the resulting rpms.
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> tar -xzf spl-x.y.z.tgz
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> cd spl-x.y.z
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> ./configure --with-linux=<kernel src>
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> make
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> make rpm
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> sudo rpm -Uvh *.<arch>.rpm
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Preparing... ########################################### [100%]
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1:spl ########################################### [ 33%]
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2:spl-modules-devel ########################################### [ 67%]
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3:spl-modules ########################################### [100%]
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2) Build ZFS and install it. This package provides the native port of
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ZFS for Linux including all kernel modules and command line utilities.
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Note it is important that you have installed spl-module-devel package
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from step 1) before attempting to build ZFS.
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> tar -xzf zfs-x.y.z.tgz
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> cd zfs-x.y.z
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> ./configure --with-linux=<kernel src>
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> make
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> make rpm
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> sudo rpm -Uvh *.<arch>.rpm
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Preparing... ########################################### [100%]
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1:zfs ########################################### [ 20%]
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2:zfs-test ########################################### [ 40%]
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3:zfs-modules-devel ########################################### [ 60%]
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4:zfs-modules ########################################### [ 80%]
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3) Enjoy ZFS on Linux! Currently only the ZVOL is fully functional
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but work on the ZPL is underway. Why is just having the ZVOL still
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useful you ask? Well here's an example of what you can do today using
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just the ZVOL:
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> # Create the 'tank' zpool containing a raidz vdev spread over 4 devices.
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> zpool create tank raidz /dev/sdb /dev/sdc /dev/sdd /dev/sde
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> zpool list
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NAME SIZE USED AVAIL CAP HEALTH ALTROOT
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tank 1.81T 132K 1.81T 0% ONLINE -
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> # Create a 100G block device named 'fish' in the 'tank' zpool.
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> zfs create -V 100G tank/fish
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> zfs list
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NAME USED AVAIL REFER MOUNTPOINT
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tank 100G 1.24T 26.9K /tank
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tank/fish 100G 1.33T 23.9K -
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> # Partition 'tank/fish' as if it were a normal block device.
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> sfdisk /dev/tank/fish << EOF
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0,
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EOF
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> sfdisk -l /dev/tank/fish
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Disk /dev/tank/fish: 208050 cylinders, 16 heads, 63 sectors/track
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Units = cylinders of 516096 bytes, blocks of 1024 bytes, counting from 0
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Device Boot Start End #cyls #blocks Id System
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/dev/tank/fish1 0+ 208049 208050- 104857199+ 83 Linux
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/dev/tank/fish2 0 - 0 0 0 Empty
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/dev/tank/fish3 0 - 0 0 0 Empty
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/dev/tank/fish4 0 - 0 0 0 Empty
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> # Format the new /dev/tank/fish1 partition with ext2 and mount it.
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> mkfs.ext2 -q /dev/tank/fish1
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> mkdir -p /mnt/tank/fish1
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> mount /dev/tank/fish1 /mnt/tank/fish1
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> ls /mnt/tank/fish1
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lost+found
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> # Take a snapshot of the pristine ext2 filesystem and mount it read-only.
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> zfs snapshot tank/fish@pristine
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> mkdir /mnt/tank/fish@pristine1
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> mount /dev/tank/fish@pristine1 /mnt/tank/fish@pristine1
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> ls /mnt/tank/fish\@pristine1
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lost+found
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> # Changes made to tank/fish1 do not appear in tank/fish@pristine1
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> touch /mnt/tank/fish1/foo
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> ls /mnt/tank/fish1/
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foo lost+found
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> ls /mnt/tank/fish\@pristine1
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lost+found
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Enjoy,
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Brian Behlendorf <behlendorf1@llnl.gov>
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@ -0,0 +1,8 @@
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Native ZFS for Linux! ZFS is an advanced file system and volume manager
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which was originally developed for Solaris. It has been successfully
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ported to FreeBSD and now there is a functional Linux ZFS kernel port
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too. The port currently includes a fully functional and stable SPA, DMU,
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and ZVOL with a ZFS Posix Layer (ZPL) on the way!
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Documentation for building, configuring, and using ZFS can be found at:
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<http://wiki.github.com/behlendorf/zfs/>
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