Attachment 5813 Details for Bug 13605 – file.diff

[patch] file.diff

file.diff (text/plain), 4.22 KB, created by mark on 1999-09-06 22:20:00 UTC

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Creator: mark

Created: 1999-09-06 22:20:00 UTC

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>*** /usr/doc/en_US.ISO_8859-1/books/handbook/backups/chapter.sgml.orig	Sat Aug 28 16:20:37 1999
>--- /usr/doc/en_US.ISO_8859-1/books/handbook/backups/chapter.sgml	Mon Sep  6 21:46:38 1999
>***************
>*** 30,41 ****
>      remember to specify exactly what version of FreeBSD you are using and
>      include as many details of your hardware as possible.</para>
>  
>-   <sect1>
>-     <title>* What about backups to floppies?</title>
>- 
>-     <para></para>
>-   </sect1>
>- 
>    <sect1 id="backups-tapebackups">
>      <title>Tape Media</title>
>      
>--- 30,35 ----
>***************
>*** 607,612 ****
>--- 601,707 ----
>        </sect3>
>      </sect2>
>    </sect1>
>+ 
>+   <sect1 id="backups-floppybackups">
>+     <title>What about backups to floppies?</title>
>+ 
>+       <sect2 id="floppies-using">
>+ 	<title>Can I use floppies for backing up my data?</title>
>+ 
>+ 	<para>Floppy disks are not really a suitable media for
>+ 	  making backups as:</para>
>+ 
>+ 	    <itemizedlist>
>+ 	      <listitem>
>+ 		<para>The media is unreliable, especially over long
>+ 		  periods of time</para>
>+ 	      </listitem>
>+ 
>+ 	      <listitem>
>+ 		<para>Backing up and restoring is very slow</para>
>+ 	      </listitem>
>+ 
>+ 	      <listitem>
>+ 		<para>They have a very limited capacity (the days of
>+ 		  backing up an entire hard disk onto a dozen or so
>+ 		  floppies has long since passed).</para>
>+ 	      </listitem>
>+ 	    </itemizedlist>
>+ 
>+ 	<para>However, if you have no other method of backing up your
>+ 	  data then floppy disks are better than no backup at all.</para>
>+ 
>+ 	<para>If you do have to use floppy disks then ensure that you use
>+ 	  good quality ones. Floppies that have been lying around the
>+ 	  office for a couple of years are a bad choice. Ideally use new
>+ 	  ones from a reputable manufacturer.</para>
>+ 
>+       </sect2>
>+ 
>+       <sect2 id="floppies-creating">
>+ 	<title>So how do I backup my data to floppies?</title>
>+ 
>+ 	<para>The best way to backup to floppy disk is to use
>+ 	  <filename>tar(1)</filename> with the <filename>[-]M</filename>
>+ 	  (multi volume) option, which allows backups to span multiple
>+ 	  floppies.</para>
>+ 
>+ 	<para>To backup all the files in the current directory and
>+ 	  sub-directory use this (as root):</para>
>+ 
>+ 	  <screen>&prompt.root; <userinput>tar Mcvf /dev/rfd0 *</userinput>
>+ 	  </screen>
>+ 
>+ 	  <para>When the first floppy is full <filename>tar(1)</filename>
>+ 	    will prompt you to insert the next volume
>+ 	    (because <filename>tar(1)</filename> is media independent it
>+ 	    refers to volumes. In this context it means floppy disk)</para>
>+ 
>+ 	  <screen>Prepare volume #2 for /dev/rfd0 and hit return:</screen>
>+ 
>+ 	  <para>This is repeated (with the volume number incrementing)
>+ 	    until all the specified files have been archived.</para>
>+ 
>+ 	</sect2>
>+ 
>+ 	<sect2 id="floppies-compress">
>+ 	  <title>Can I compress my backups?</title>
>+ 
>+ 	  <para>Unfortunately, <filename>tar(1)</filename> will not allow
>+ 	    the <filename>-z</filename> option to be used for multi-volume
>+ 	    archives. You could, of course, <filename>gzip(1)</filename>
>+ 	    all the files, <filename>tar(1)</filename> them to the floppies,
>+ 	    then <filename>gunzip(1)</filename> the files again!</para>
>+ 
>+ 	</sect2>
>+ 
>+ 	<sect2 id="floppies-restoring">
>+ 	  <title>How do I restore my backups?</title>
>+ 
>+ 	    <para>To restore the entire archive use:</para>
>+ 	      <screen>&prompt.root; <userinput>tar Mxvf /dev/rfd0</userinput>
>+               </screen>
>+ 
>+ 	    <para>To restore only specific files you can either start
>+ 	      with the first floppy and use:</para>
>+ 
>+               <screen>&prompt.root; <userinput>tar Mxvf /dev/rfd0 filename..
>+ 		</userinput></screen>
>+ 
>+ 	    <para><filename>tar(1)</filename> will prompt you to insert
>+ 	      subsequent floppies until it finds the required file.</para>
>+ 
>+ 	    <para>Alternatively, if you know which floppy the file is on
>+ 	      then you can simply insert that floppy and use the same
>+ 	      command as above. Note that if the first file on the floppy is
>+ 	      a continuation from the previous one then
>+ 	      <filename>tar(1)</filename> will warn you that it cannot
>+ 	      restore it, even if you have not asked it to!</para>
>+ 
>+ 	</sect2>
>+ 
>+   </sect1>
>+ 
>  </chapter>
>  
>  <!--

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