source: postlfs/filesystems/ext3.xml@ 2a87a398

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Last change on this file since 2a87a398 was 4ea49a3, checked in by Larry Lawrence <larry@…>, 18 years ago

filesystem, editors edits

git-svn-id: svn://svn.linuxfromscratch.org/BLFS/trunk/BOOK@2235 af4574ff-66df-0310-9fd7-8a98e5e911e0

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1<sect1 id="postlfs-filesystems-ext3">
2<?dbhtml filename="ext3.html"?>
3<title>Ext3</title>
4
5<para>Ext3 is a journaling file system that is an extension to the ext2
6file system. It is backward compatible with ext2 and the conversion from ext2
7to ext3 is trivial.</para>
8
9<para>You don't need to install anything to use ext3, all the required
10packages are available with a bare <acronym>LFS</acronym> system.</para>
11
12<para>When building the kernel, ensure that you have compiled in ext3
13support. If you want your root partition to be ext3, then compile the ext3
14support in the kernel, else you may compile it as a module. Recompile the
15kernel if needed.</para>
16
17<para>Edit your <filename>/etc/fstab</filename>. For each partition that you
18want to convert into ext3, edit the entry so that it looks similar to the
19following line.</para>
20
21<screen>/dev/hd<replaceable>XX</replaceable> /mnt_point ext3 defaults 1 0</screen>
22
23<para>In the above line, replace
24<filename>/dev/hd<replaceable>XX</replaceable></filename> by the
25partition (e.g. <filename>/dev/hda2</filename>),
26<filename class="directory">/mnt_point</filename> by the mount point (e.g.
27<filename class="directory">/home</filename>). The <option>0</option> in the
28last field ensures that the partition will not be checked for
29consistency during the boot process by the <command>checkfs</command> script.
30You may replace the <option>ext3</option> fs type in the above by
31<option>auto</option> if you want to ensure that the partition is mounted
32if you accidentally skip enabling the ext3 support in the kernel.</para>
33
34<para>For each partition that you have converted to ext3 in <filename>
35/etc/fstab</filename>, enable the journal for the partition by running the
36following command.</para>
37
38<screen><userinput><command>tune2fs -j /dev/hd<replaceable>XX</replaceable></command></userinput></screen>
39
40<para>Remount the concerned partitions, or simply reboot if you have
41recompiled the kernel to enable ext3 support.</para>
42
43<para>More information is available at <ulink
44url="http://www.zip.com.au/~akpm/linux/ext3/ext3-usage.html"/>.</para>
45
46</sect1>
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