| 1 | <sect1 id="ch08-fstab">
|
|---|
| 2 | <title>Creating the /etc/fstab file</title>
|
|---|
| 3 | <?dbhtml filename="fstab.html" dir="chapter08"?>
|
|---|
| 4 |
|
|---|
| 5 | <para>The <filename>/etc/fstab</filename> file is used by some programs to
|
|---|
| 6 | determine where partitions are to be mounted by default, which file systems
|
|---|
| 7 | must be checked and in which order. Create a new file systems table like
|
|---|
| 8 | this:</para>
|
|---|
| 9 |
|
|---|
| 10 | <screen><userinput>cat > /etc/fstab << "EOF"</userinput>
|
|---|
| 11 | # Begin /etc/fstab
|
|---|
| 12 |
|
|---|
| 13 | # filesystem mount-point fs-type options dump fsck-order
|
|---|
| 14 |
|
|---|
| 15 | /dev/xxx / fff defaults 1 1
|
|---|
| 16 | /dev/yyy swap swap pri=1 0 0
|
|---|
| 17 | proc /proc proc defaults 0 0
|
|---|
| 18 | devpts /dev/pts devpts gid=4,mode=620 0 0
|
|---|
| 19 | shm /dev/shm tmpfs defaults 0 0
|
|---|
| 20 |
|
|---|
| 21 | # End /etc/fstab
|
|---|
| 22 | <userinput>EOF</userinput></screen>
|
|---|
| 23 |
|
|---|
| 24 | <para>Of course, replace <filename>xxx</filename>, <filename>yyy</filename>
|
|---|
| 25 | and <filename>fff</filename> with the values appropriate for your system --
|
|---|
| 26 | for example <filename>hda2</filename>, <filename>hda5</filename> and
|
|---|
| 27 | <filename>reiserfs</filename>. For all the details on the six fields in this
|
|---|
| 28 | table, see <userinput>man 5 fstab</userinput>.</para>
|
|---|
| 29 |
|
|---|
| 30 | <para>When using a reiserfs partition, the <emphasis>1 1</emphasis> at the
|
|---|
| 31 | end of the line should be replaced with <emphasis>0 0</emphasis>, as such a
|
|---|
| 32 | partition does not need to be dumped or checked</para>
|
|---|
| 33 |
|
|---|
| 34 | <para>The <filename>/dev/shm</filename> mount point for tmpfs is included to
|
|---|
| 35 | allow enabling POSIX shared memory. Your kernel must have the required support
|
|---|
| 36 | built into it for this to work -- more about this in the next section. Please
|
|---|
| 37 | note that currently very little software actually uses POSIX shared memory.
|
|---|
| 38 | Therefore you can consider the <filename>/dev/shm</filename> mount point
|
|---|
| 39 | optional. For more information, see
|
|---|
| 40 | <filename>Documentation/filesystems/tmpfs.txt</filename> in the kernel source
|
|---|
| 41 | tree.</para>
|
|---|
| 42 |
|
|---|
| 43 | <para>There are other lines which you may consider adding to your
|
|---|
| 44 | <filename>fstab</filename> file. One example is a line to use if you intend to
|
|---|
| 45 | use USB devices:</para>
|
|---|
| 46 |
|
|---|
| 47 | <screen>usbfs /proc/bus/usb usbfs defaults 0 0</screen>
|
|---|
| 48 |
|
|---|
| 49 | <para>This option will of course only work if you have the relevant support
|
|---|
| 50 | compiled into your kernel.</para>
|
|---|
| 51 |
|
|---|
| 52 | </sect1>
|
|---|
| 53 |
|
|---|
