180 lines
2.9 KiB
HTML
180 lines
2.9 KiB
HTML
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
|
|
<HTML
|
|
><HEAD
|
|
><TITLE
|
|
>What to back up</TITLE
|
|
><META
|
|
NAME="GENERATOR"
|
|
CONTENT="Modular DocBook HTML Stylesheet Version 1.7"><LINK
|
|
REL="HOME"
|
|
TITLE="Linux System Administrators Guide"
|
|
HREF="index.html"><LINK
|
|
REL="UP"
|
|
TITLE="Backups"
|
|
HREF="backups-intro.html"><LINK
|
|
REL="PREVIOUS"
|
|
TITLE="Multilevel backups"
|
|
HREF="multi-level-backups.html"><LINK
|
|
REL="NEXT"
|
|
TITLE="Compressed backups"
|
|
HREF="compressed-backups.html"></HEAD
|
|
><BODY
|
|
CLASS="SECT1"
|
|
BGCOLOR="#FFFFFF"
|
|
TEXT="#000000"
|
|
LINK="#0000FF"
|
|
VLINK="#840084"
|
|
ALINK="#0000FF"
|
|
><DIV
|
|
CLASS="NAVHEADER"
|
|
><TABLE
|
|
SUMMARY="Header navigation table"
|
|
WIDTH="100%"
|
|
BORDER="0"
|
|
CELLPADDING="0"
|
|
CELLSPACING="0"
|
|
><TR
|
|
><TH
|
|
COLSPAN="3"
|
|
ALIGN="center"
|
|
>Linux System Administrators Guide: </TH
|
|
></TR
|
|
><TR
|
|
><TD
|
|
WIDTH="10%"
|
|
ALIGN="left"
|
|
VALIGN="bottom"
|
|
><A
|
|
HREF="multi-level-backups.html"
|
|
ACCESSKEY="P"
|
|
>Prev</A
|
|
></TD
|
|
><TD
|
|
WIDTH="80%"
|
|
ALIGN="center"
|
|
VALIGN="bottom"
|
|
>Chapter 12. Backups</TD
|
|
><TD
|
|
WIDTH="10%"
|
|
ALIGN="right"
|
|
VALIGN="bottom"
|
|
><A
|
|
HREF="compressed-backups.html"
|
|
ACCESSKEY="N"
|
|
>Next</A
|
|
></TD
|
|
></TR
|
|
></TABLE
|
|
><HR
|
|
ALIGN="LEFT"
|
|
WIDTH="100%"></DIV
|
|
><DIV
|
|
CLASS="SECT1"
|
|
><H1
|
|
CLASS="SECT1"
|
|
><A
|
|
NAME="WHAT-TO-BACKUP"
|
|
></A
|
|
>12.6. What to back up</H1
|
|
><P
|
|
> You want to back up as much as possible. The major
|
|
exception is software that can be easily reinstalled,
|
|
but even they may have configuration files that it is
|
|
important to back up, lest you need to do all the work to
|
|
configure them all over again. Another major exception is
|
|
the <TT
|
|
CLASS="FILENAME"
|
|
>/proc</TT
|
|
> filesystem; since that only
|
|
contains data that the kernel always generates automatically,
|
|
it is never a good idea to back it up. Especially the
|
|
<TT
|
|
CLASS="FILENAME"
|
|
>/proc/kcore</TT
|
|
> file is unnecessary, since it
|
|
is just an image of your current physical memory; it's pretty
|
|
large as well. </P
|
|
><P
|
|
> Gray areas include the news spool, log files, and many
|
|
other things in <TT
|
|
CLASS="FILENAME"
|
|
>/var</TT
|
|
>. You must decide what
|
|
you consider important. </P
|
|
><P
|
|
> The obvious things to back up are user files
|
|
(<TT
|
|
CLASS="FILENAME"
|
|
>/home</TT
|
|
>) and system configuration files
|
|
(<TT
|
|
CLASS="FILENAME"
|
|
>/etc</TT
|
|
>, but possibly other things scattered
|
|
all over the filesystem). </P
|
|
></DIV
|
|
><DIV
|
|
CLASS="NAVFOOTER"
|
|
><HR
|
|
ALIGN="LEFT"
|
|
WIDTH="100%"><TABLE
|
|
SUMMARY="Footer navigation table"
|
|
WIDTH="100%"
|
|
BORDER="0"
|
|
CELLPADDING="0"
|
|
CELLSPACING="0"
|
|
><TR
|
|
><TD
|
|
WIDTH="33%"
|
|
ALIGN="left"
|
|
VALIGN="top"
|
|
><A
|
|
HREF="multi-level-backups.html"
|
|
ACCESSKEY="P"
|
|
>Prev</A
|
|
></TD
|
|
><TD
|
|
WIDTH="34%"
|
|
ALIGN="center"
|
|
VALIGN="top"
|
|
><A
|
|
HREF="index.html"
|
|
ACCESSKEY="H"
|
|
>Home</A
|
|
></TD
|
|
><TD
|
|
WIDTH="33%"
|
|
ALIGN="right"
|
|
VALIGN="top"
|
|
><A
|
|
HREF="compressed-backups.html"
|
|
ACCESSKEY="N"
|
|
>Next</A
|
|
></TD
|
|
></TR
|
|
><TR
|
|
><TD
|
|
WIDTH="33%"
|
|
ALIGN="left"
|
|
VALIGN="top"
|
|
>Multilevel backups</TD
|
|
><TD
|
|
WIDTH="34%"
|
|
ALIGN="center"
|
|
VALIGN="top"
|
|
><A
|
|
HREF="backups-intro.html"
|
|
ACCESSKEY="U"
|
|
>Up</A
|
|
></TD
|
|
><TD
|
|
WIDTH="33%"
|
|
ALIGN="right"
|
|
VALIGN="top"
|
|
>Compressed backups</TD
|
|
></TR
|
|
></TABLE
|
|
></DIV
|
|
></BODY
|
|
></HTML
|
|
> |