source: postlfs/filesystems/ext3.xml@ 5a9404bb

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Last change on this file since 5a9404bb was 5a9404bb, checked in by Manuel Canales Esparcia <manuel@…>, 19 years ago

Tagged ext3.xml

git-svn-id: svn://svn.linuxfromscratch.org/BLFS/trunk/BOOK@4191 af4574ff-66df-0310-9fd7-8a98e5e911e0

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1<?xml version="1.0" encoding="ISO-8859-1"?>
2<!DOCTYPE sect1 PUBLIC "-//OASIS//DTD DocBook XML V4.4//EN"
3 "http://www.oasis-open.org/docbook/xml/4.4/docbookx.dtd" [
4 <!ENTITY % general-entities SYSTEM "../../general.ent">
5 %general-entities;
6]>
7
8<sect1 id="postlfs-filesystems-ext3">
9 <?dbhtml filename="ext3.html"?>
10
11 <sect1info>
12 <othername>$LastChangedBy$</othername>
13 <date>$Date$</date>
14 </sect1info>
15
16 <title>Ext3</title>
17
18 <para>Ext3 is a journaling file system that is an extension to the ext2
19 file system. It is backward compatible with ext2 and the conversion from
20 ext2 to ext3 is trivial.</para>
21
22 <para>You don't need to install anything to use ext3, all the required
23 packages are available with a bare LFS system.</para>
24
25 <para>When building the kernel, ensure that you have compiled in ext3
26 support. If you want your root partition to be ext3, then compile the ext3
27 support in the kernel, else you may compile it as a module. Recompile the
28 kernel if needed.</para>
29
30 <para>Edit your <filename>/etc/fstab</filename>. For each partition that you
31 want to convert into ext3, edit the entry so that it looks similar to the
32 following line.</para>
33
34<screen><literal>/dev/hd<replaceable>[XX]</replaceable> /mnt_point ext3 defaults 1 0</literal></screen>
35
36 <para>In the above line, replace
37 <filename>/dev/hd<replaceable>[XX]</replaceable></filename> by the
38 partition (e.g., <filename>/dev/hda2</filename>),
39 <filename class="directory">/mnt_point</filename> by the mount point (e.g.,
40 <filename class="directory">/home</filename>). The <option>0</option> in the
41 last field ensures that the partition will not be checked for
42 consistency during the boot process by the <command>checkfs</command> script.
43 You may replace the <option>ext3</option> fs type in the above by
44 <option>auto</option> if you want to ensure that the partition is mounted
45 if you accidentally skip enabling the ext3 support in the kernel.</para>
46
47 <para>For each partition that you have converted to ext3 in <filename>
48 /etc/fstab</filename>, enable the journal for the partition by running the
49 following command.</para>
50
51<screen role="root"><userinput>tune2fs -j /dev/hd<replaceable>[XX]</replaceable></userinput></screen>
52
53 <para>Remount the concerned partitions, or simply reboot if you have
54 recompiled the kernel to enable ext3 support.</para>
55
56 <para>More information is available at <ulink
57 url="http://www.zip.com.au/~akpm/linux/ext3/ext3-usage.html"/>. This
58 informaion is still relevant to the 2.6 kernels.</para>
59
60</sect1>
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