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git-svn-id: svn://svn.linuxfromscratch.org/BLFS/trunk/BOOK@1304 af4574ff-66df-0310-9fd7-8a98e5e911e0
47 lines
2.1 KiB
XML
47 lines
2.1 KiB
XML
<sect1 id="postlfs-filesystems-ext3">
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<?dbhtml filename="ext3.html" dir="postlfs"?>
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<title>Ext3</title>
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<para>Ext3 is a journaling file system that is an extension to the ext2
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file system. It is backward compatible with ext2 and the conversion from ext2
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to ext3 is trivial.</para>
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<para>You don't need to install anything to use ext3, all the required
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packages are available with a bare <acronym>LFS</acronym> system.</para>
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<para>When building the kernel, ensure that you have compiled in ext3
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support. If you want your root partition to be ext3, then compile the ext3
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support in the kernel, else you may compile it as a module. Recompile the
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kernel if needed.</para>
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<para>Edit your <filename>/etc/fstab</filename>. For each partition that you
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want to convert into ext3, edit the entry so that it looks similar to the
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following line.</para>
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<screen>/dev/hd<replaceable>XX</replaceable> /mnt_point ext3 defaults 1 0</screen>
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<para>In the above line, replace
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<filename>/dev/hd<replaceable>XX</replaceable></filename> by the
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partition (e.g. <filename>/dev/hda2</filename>),
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<filename class="directory">/mnt_point</filename> by the mount point (e.g.
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<filename class="directory">/home</filename>). The <option>0</option> in the
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last field ensures that the partition will not be checked for
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consistency during the boot process by the <command>checkfs</command> script.
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You may replace the <option>ext3</option> fs type in the above by
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<option>auto</option> if you want to ensure that the partition is mounted
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if you accidentally skip enabling the ext3 support in the kernel.</para>
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<para>For each partition that you have converted to ext3 in <filename>
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/etc/fstab</filename>, enable the journal for the partition by running the
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following command.</para>
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<screen><userinput><command>tune2fs -j /dev/hd<replaceable>XX</replaceable></command></userinput></screen>
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<para>Remount the concerned partitions, or simply reboot if you have
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recompiled the kernel to enable ext3 support.</para>
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<para>More information is available at <ulink
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url="http://www.zip.com.au/~akpm/linux/ext3/ext3-usage.html"/></para>
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</sect1>
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