175 lines
3.0 KiB
HTML
175 lines
3.0 KiB
HTML
<HTML
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><HEAD
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><TITLE
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>How LKCD Works</TITLE
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><META
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NAME="GENERATOR"
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CONTENT="Modular DocBook HTML Stylesheet Version 1.63
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"><LINK
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REL="HOME"
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TITLE="Linux Crash HOWTO"
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HREF="index.html"><LINK
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REL="PREVIOUS"
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TITLE="Introduction"
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HREF="intro.html"><LINK
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REL="NEXT"
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TITLE="Installation of lkcd"
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HREF="install.html"></HEAD
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><BODY
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CLASS="SECT1"
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BGCOLOR="#FFFFFF"
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TEXT="#000000"
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LINK="#0000FF"
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VLINK="#840084"
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ALINK="#0000FF"
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><DIV
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><TABLE
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CELLSPACING="0"
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><TR
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><TH
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COLSPAN="3"
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ALIGN="center"
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>Linux Crash HOWTO</TH
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></TR
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><TR
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><TD
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WIDTH="10%"
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ALIGN="left"
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VALIGN="bottom"
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><A
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HREF="intro.html"
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>Prev</A
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></TD
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><TD
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WIDTH="80%"
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ALIGN="center"
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VALIGN="bottom"
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></TD
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><TD
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WIDTH="10%"
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ALIGN="right"
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VALIGN="bottom"
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><A
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HREF="install.html"
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>Next</A
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></TD
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></TR
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></TABLE
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><HR
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ALIGN="LEFT"
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WIDTH="100%"></DIV
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><DIV
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CLASS="SECT1"
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><H1
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CLASS="SECT1"
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><A
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NAME="HOWITWORKS"
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>2. How LKCD Works</A
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></H1
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><P
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> When a kernel encounters certain errors it calls the
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"panic" function which results from a unrecoverable
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error. This panic results in LKCD initiating a kernel dump where
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kernel memory is copied out to the pre-designated dump area. The
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dump device is configured as primary swap by default. The kernel
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is not completely functional at this point, but there is enough
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functionality to copy memory to disk. After dump finishes
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copying memory to disk, the system re-boots. When the system
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boots back up, it checks for a new crash dump. If a new crash
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dump is found it is copied from the dump location to the file
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system, "<TT
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CLASS="FILENAME"
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>/var/log/dump</TT
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>" directory
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by default. After copying the image, the system continues to boot
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normally and forensics can be performed at a later date. </P
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><DIV
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CLASS="SECT2"
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><H2
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CLASS="SECT2"
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><A
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NAME="WHATYOUNEED"
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>2.1. What You Need</A
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></H2
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><P
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> <TT
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CLASS="FILENAME"
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>lkcd-kernelxxx.diff</TT
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> file for patching the
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kernel. The kernel version supported will change routinely.
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<TT
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CLASS="FILENAME"
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>lkcdutils-xx.src.rpm</TT
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> - this is the utilities
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source and scripts you will need to setup and read a crash. At the
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time of this writing there is a i386 binary rpm available from
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<A
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HREF="http://lkcd.sourceforge.net/"
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TARGET="_top"
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>lkcd.sourceforge.net</A
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>,
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but you will still need the patches for the startup scripts from the
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source rpm. </P
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></DIV
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></DIV
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><DIV
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CLASS="NAVFOOTER"
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><HR
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ALIGN="LEFT"
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WIDTH="100%"><TABLE
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WIDTH="100%"
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BORDER="0"
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CELLPADDING="0"
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CELLSPACING="0"
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><TR
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><TD
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WIDTH="33%"
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ALIGN="left"
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VALIGN="top"
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><A
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HREF="intro.html"
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>Prev</A
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></TD
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><TD
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WIDTH="34%"
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ALIGN="center"
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VALIGN="top"
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><A
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HREF="index.html"
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>Home</A
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></TD
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><TD
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WIDTH="33%"
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ALIGN="right"
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VALIGN="top"
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><A
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HREF="install.html"
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>Next</A
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></TD
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></TR
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><TR
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><TD
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WIDTH="33%"
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ALIGN="left"
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VALIGN="top"
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>Introduction</TD
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><TD
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WIDTH="34%"
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ALIGN="center"
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VALIGN="top"
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> </TD
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><TD
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WIDTH="33%"
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ALIGN="right"
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VALIGN="top"
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>Installation of lkcd</TD
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></TR
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></TABLE
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></DIV
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></BODY
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></HTML
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> |