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-<H1>Administration Reference</H1>
-<HR><P ALIGN="center"> <A HREF="../index.htm"><IMG SRC="../books.gif" BORDER="0" ALT="[Return to Library]"></A> <A HREF="auarf002.htm#ToC"><IMG SRC="../toc.gif" BORDER="0" ALT="[Contents]"></A> <A HREF="auarf037.htm"><IMG SRC="../prev.gif" BORDER="0" ALT="[Previous Topic]"></A> <A HREF="#Bot_Of_Page"><IMG SRC="../bot.gif" BORDER="0" ALT="[Bottom of Topic]"></A> <A HREF="auarf039.htm"><IMG SRC="../next.gif" BORDER="0" ALT="[Next Topic]"></A> <A HREF="auarf284.htm#HDRINDEX"><IMG SRC="../index.gif" BORDER="0" ALT="[Index]"></A> <P>
-<P>
-<H2><A NAME="HDRVLLOG" HREF="auarf002.htm#ToC_36">VLLog</A></H2>
-<P><STRONG>Purpose</STRONG>
-<A NAME="IDX3994"></A>
-<A NAME="IDX3995"></A>
-<A NAME="IDX3996"></A>
-<P>Traces Volume Location Server operations
-<P><STRONG>Description</STRONG>
-<P>The <B>VLLog</B> file records a trace of Volume Location (VL) Server
-(<B>vlserver</B> process) operations on the local machine and describes
-any error conditions it encounters.
-<P>If the <B>VLLog</B> file does not already exist in the
-<B>/usr/afs/logs</B> directory when the VL Server starts, the server
-process creates it and writes initial start-up messages to it. If there
-is an existing file, the VL Server renames it to <B>VLLog.old</B>,
-overwriting the existing <B>VLLog.old</B> file if it exists.
-<P>The file is in ASCII format. Administrators listed in the
-<B>/usr/afs/etc/UserList</B> file can use the <B>bos getlog</B>
-command to display its contents. Alternatively, log onto the server
-machine and use a text editor or a file display command such as the UNIX
-<B>cat</B> command. By default, the mode bits on the
-<B>VLLog</B> file grant the required <B>r</B> (<B>read</B>)
-permission to all users.
-<P>The VL Server records operations only as it completes them, and cannot
-recover from failures by reviewing the file. The log contents are
-useful for administrative evaluation of process failures and other
-problems.
-<P>The VL Server can record messages at three levels of detail. By
-default, it records only very rudimentary messages. To increase logging
-to the first level of detail, issue the following command while logged onto
-the database server machine as the local superuser <B>root</B>.
-<PRE> # <B>kill -TSTP</B> <VAR>vlserver_pid</VAR>
-
-</PRE>
-<P>where <VAR>vlserver_pid</VAR> is the process ID of the <B>vlserver</B>
-process, as reported in the output from the standard UNIX <B>ps</B>
-command. To increase to the second and third levels of detail, repeat
-the command.
-<P>To disable logging, issue the following command.
-<PRE>
- # <B>kill -HUP</B> <VAR>vlserver_pid</VAR>
-
-</PRE>
-<P>To decrease the level of logging, first completely disable it and then
-issue the <B>kill -TSTP</B> command as many times as necessary to reach
-the desired level.
-<P><STRONG>Related Information</STRONG>
-<P><A HREF="auarf035.htm#HDRUSERLIST">UserList</A>
-<P><A HREF="auarf102.htm#HDRBOS_GETLOG">bos getlog</A>
-<P><A HREF="auarf249.htm#HDRVLSERVER">vlserver</A>
-<P>
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