| 1 | <?xml version="1.0" encoding="ISO-8859-1"?>
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| 2 | <!DOCTYPE sect1 PUBLIC "-//OASIS//DTD DocBook XML V4.5//EN"
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| 3 | "http://www.oasis-open.org/docbook/xml/4.5/docbookx.dtd" [
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| 4 | <!ENTITY % general-entities SYSTEM "../../general.ent">
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| 5 | %general-entities;
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| 6 | ]>
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| 7 |
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| 8 | <sect1 id="ch-bootable-fstab">
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| 9 | <?dbhtml filename="fstab.html"?>
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| 10 |
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| 11 | <title>Creating the /etc/fstab File</title>
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| 12 |
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| 13 | <indexterm zone="ch-bootable-fstab">
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| 14 | <primary sortas="e-/etc/fstab">/etc/fstab</primary>
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| 15 | </indexterm>
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| 16 |
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| 17 | <para os="a">The <filename>/etc/fstab</filename> file is used by some
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| 18 | programs to determine where file systems are to be mounted by default,
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| 19 | in which order, and which must be checked (for integrity errors) prior
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| 20 | to mounting. Create a new file systems table like this:</para>
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| 21 |
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| 22 | <screen><userinput>cat > /etc/fstab << "EOF"
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| 23 | <literal># Begin /etc/fstab
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| 24 |
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| 25 | # file system mount-point type options dump fsck
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| 26 | # order
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| 27 |
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| 28 | /dev/<replaceable>[xxx]</replaceable> / <replaceable>[fff]</replaceable> defaults 1 1
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| 29 | /dev/<replaceable>[yyy]</replaceable> swap swap pri=1 0 0
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| 30 | proc /proc proc defaults 0 0
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| 31 | sysfs /sys sysfs defaults 0 0
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| 32 | devpts /dev/pts devpts gid=&gid-tty;,mode=620 0 0
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| 33 | shm /dev/shm tmpfs defaults 0 0
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| 34 | tmpfs /run tmpfs defaults 0 0
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| 35 | devtmpfs /dev devtmpfs mode=0755,nosuid 0 0
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| 36 |
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| 37 | # End /etc/fstab</literal>
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| 38 | EOF</userinput></screen>
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| 39 |
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| 40 | <para os="b">Replace <replaceable>[xxx]</replaceable>,
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| 41 | <replaceable>[yyy]</replaceable>, and <replaceable>[fff]</replaceable>
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| 42 | with the values appropriate for the system, for example, <filename
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| 43 | class="partition">hda2</filename>, <filename
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| 44 | class="partition">hda5</filename>, and <systemitem
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| 45 | class="filesystem">ext2</systemitem>. For details on the six
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| 46 | fields in this file, see <command>man 5 fstab</command>.</para>
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| 47 |
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| 48 | <para os="c">The <filename class="directory">/dev/shm</filename> mount point
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| 49 | for <systemitem class="filesystem">tmpfs</systemitem> is included to
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| 50 | allow enabling POSIX-shared memory. The kernel must have the required
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| 51 | support built into it for this to work (more about this is in the next
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| 52 | section). Please note that very little software currently uses
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| 53 | POSIX-shared memory. Therefore, consider the <filename
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| 54 | class="directory">/dev/shm</filename> mount point optional. For more
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| 55 | information, see <filename>Documentation/filesystems/tmpfs.txt</filename>
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| 56 | in the kernel source tree.</para>
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| 57 |
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| 58 | </sect1>
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