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Expand discussion of file system types and
make ext4 the example LFS partition type git-svn-id: http://svn.linuxfromscratch.org/LFS/trunk/BOOK@10286 4aa44e1e-78dd-0310-a6d2-fbcd4c07a689
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Bruce Dubbs
parent
28c4c1ede4
commit
4e7e16d690
@ -35,6 +35,17 @@
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</itemizedlist>
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</listitem>
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-->
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<listitem>
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<para>2013-05-19</para>
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<itemizedlist>
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<listitem>
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<para>[bdubbs] - Expand discussion of file system types and
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make ext4 the example LFS partition type. Fixes
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<ulink url="&lfs-ticket-root;3346">#3346</ulink>.</para>
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</listitem>
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</itemizedlist>
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</listitem>
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<listitem>
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<para>2013-05-15</para>
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<itemizedlist>
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@ -10,23 +10,49 @@
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<title>Creating a File System on the Partition</title>
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<para>Now that a blank partition has been set up, the file system can be created.
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The most widely-used system in the Linux world is the second extended file
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system (<systemitem class="filesystem">ext2</systemitem>), but with newer
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high-capacity hard disks, journaling file systems are becoming increasingly
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popular. The third extended filesystem (<systemitem
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class="filesystem">ext3</systemitem>) is a widely used enhancement to
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<systemitem class="filesystem">ext2</systemitem>, which adds journaling
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capabilities and is compatible with the E2fsprogs utilities.
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We will create an <systemitem class="filesystem">ext3</systemitem>
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file system. Instructions for creating other file systems can be found at
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<ulink url="&blfs-root;view/svn/postlfs/filesystems.html"/>.</para>
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<para>Now that a blank partition has been set up, the file system can be
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created. LFS can use any file system recognized by the Linux kernel, but the
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most common types are ext3 and ext4. The choice of file system can be
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complex and depends on the characteristics of the files and the size of
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the partition. For example:</para>
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<para>To create an <systemitem class="filesystem">ext3</systemitem> file
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system on the LFS partition, run the following:</para>
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<variablelist>
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<varlistentry>
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<term>ext2</term>
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<listitem><para>is suitable for small partitions that are updated infrequently
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such as /boot.</para>
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</listitem>
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</varlistentry>
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<varlistentry>
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<term>ext3</term>
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<listitem><para>is an upgrade to ext2 that includes a journal
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to help recover the partition's status in the case of an unclean
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shutdown. It is commonly used as a general purpose file system.
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</para>
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</listitem>
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</varlistentry>
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<varlistentry>
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<term>ext4</term>
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<listitem><para>is the latest version of the ext file system family of
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partition types. It provides several new capabilties including
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nano-second timestamps, creation and use of very large files (16 TB), and
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speed improvements.</para>
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</listitem>
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</varlistentry>
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</variablelist>
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<screen role="nodump"><userinput>mke2fs -jv /dev/<replaceable><xxx></replaceable></userinput></screen>
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<para>Other file sytems, including FAT32, NTFS, ReiserFS, JFS, and XFS are
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useful for specialized purposes. More information about these file systems
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can be found at <ulink
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url="http://en.wikipedia.org/wiki/Comparison_of_file_systems"/>.</para>
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<para>LFS assumes that the root file system (/) is of type ext4. To create
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an <systemitem class="filesystem">ext4</systemitem> file system on the LFS
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partition, run the following:</para>
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<screen role="nodump"><userinput>mkfs -v -t ext4 /dev/<replaceable><xxx></replaceable></userinput></screen>
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<!--
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<para>Replace <replaceable><xxx></replaceable> with the name of the LFS
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partition (<filename class="devicefile">sda5</filename> in our previous
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example).</para>
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@ -61,7 +87,7 @@ make #note that we intentionally don't 'make install' here!
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cd /tmp
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rm -rfv e2fsprogs-&e2fsprogs-version;</userinput></screen>
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</note>
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-->
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<para>If you are using an existing <systemitem class="filesystem">swap
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</systemitem> partition, there is no need to format it. If a new
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<systemitem class="filesystem"> swap</systemitem> partition was created,
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@ -26,7 +26,7 @@
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running:</para>
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<screen role="nodump"><userinput>mkdir -pv $LFS
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mount -v -t ext3 /dev/<replaceable><xxx></replaceable> $LFS</userinput></screen>
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mount -v -t ext4 /dev/<replaceable><xxx></replaceable> $LFS</userinput></screen>
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<para>Replace <replaceable><xxx></replaceable> with the designation of the LFS
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partition.</para>
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@ -36,9 +36,9 @@ mount -v -t ext3 /dev/<replaceable><xxx></replaceable> $LFS</userinput></s
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class="directory">/usr</filename>), mount them using:</para>
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<screen role="nodump"><userinput>mkdir -pv $LFS
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mount -v -t ext3 /dev/<replaceable><xxx></replaceable> $LFS
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mount -v -t ext4 /dev/<replaceable><xxx></replaceable> $LFS
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mkdir -v $LFS/usr
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mount -v -t ext3 /dev/<replaceable><yyy></replaceable> $LFS/usr</userinput></screen>
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mount -v -t ext4 /dev/<replaceable><yyy></replaceable> $LFS/usr</userinput></screen>
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<para>Replace <replaceable><xxx></replaceable> and
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<replaceable><yyy></replaceable> with the appropriate partition
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@ -41,7 +41,7 @@ EOF</userinput></screen>
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with the values appropriate for the system, for example, <filename
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class="partition">sda2</filename>, <filename
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class="partition">sda5</filename>, and <systemitem
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class="filesystem">ext3</systemitem>. For details on the six
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class="filesystem">ext4</systemitem>. For details on the six
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fields in this file, see <command>man 5 fstab</command>.</para>
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<!--
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@ -1,5 +1,5 @@
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<!ENTITY version "SVN-20130515">
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<!ENTITY releasedate "May 15, 2013">
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<!ENTITY version "SVN-20130519">
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<!ENTITY releasedate "May 19, 2013">
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<!ENTITY copyrightdate "1999-2013"><!-- jhalfs needs a literal dash, not – -->
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<!ENTITY milestone "7.4">
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<!ENTITY generic-version "development"> <!-- Use "development", "testing", or "x.y[-pre{x}]" -->
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