1 <?xml version="1.0" encoding="UTF-8"?>
4 <refentrytitle>VLLog</refentrytitle>
5 <manvolnum>5</manvolnum>
8 <refname>VLLog</refname>
9 <refpurpose>Traces Volume Location Server operations</refpurpose>
12 <title>Description</title>
13 <para>The <replaceable>VLLog</replaceable> file records a trace of Volume Location (VL) Server
14 (<emphasis role="bold">vlserver</emphasis> process) operations on the local machine and describes any
15 error conditions it encounters.</para>
17 <para>If the <replaceable>VLLog</replaceable> file does not already exist in the
18 <replaceable>/usr/afs/logs</replaceable> directory when the VL Server starts, the server
19 process creates it and writes initial start-up messages to it. If there
20 is an existing file, the VL Server renames it to <replaceable>VLLog.old</replaceable>,
21 overwriting the existing <replaceable>VLLog.old</replaceable> file if it exists.</para>
23 <para>The file is in ASCII format. Administrators listed in the
24 <replaceable>/usr/afs/etc/UserList</replaceable> file can use the <emphasis role="bold">bos getlog</emphasis> command to display
25 its contents. Alternatively, log onto the server machine and use a text
26 editor or a file display command such as the UNIX <emphasis role="bold">cat</emphasis> command. By
27 default, the mode bits on the <replaceable>VLLog</replaceable> file grant the required <computeroutput>r</computeroutput> (read)
28 permission to all users.</para>
30 <para>The VL Server records operations only as it completes them, and cannot
31 recover from failures by reviewing the file. The log contents are useful
32 for administrative evaluation of process failures and other problems.</para>
34 <para>The VL Server can record messages at three levels of detail. By default,
35 it records only very rudimentary messages. To increase logging to the
36 first level of detail, issue the following command while logged onto the
37 database server machine as the local superuser <computeroutput>root</computeroutput>.</para>
40 # kill -TSTP &lt;vlserver_pid&gt;
43 <para>where <vlserver_pid> is the process ID of the vlserver process, as
44 reported in the output from the standard UNIX <emphasis role="bold">ps</emphasis> command. To increase
45 to the second and third levels of detail, repeat the command.</para>
47 <para>To disable logging, issue the following command.</para>
50 # kill -HUP &lt;vlserver_pid&gt;
53 <para>To decrease the level of logging, first completely disable it and then
54 issue the <computeroutput>kill -TSTP</computeroutput> command as many times as necessary to reach the
59 <title>See Also</title>
60 <para><link linkend="UserList5">UserList(5)</link>,
61 <link linkend="bos_getlog8">bos_getlog(8)</link>,
62 <link linkend="vlserver8">vlserver(8)</link></para>
66 <title>Copyright</title>
67 <para>IBM Corporation 2000. <http://www.ibm.com/> All Rights Reserved.</para>
69 <para>This documentation is covered by the IBM Public License Version 1.0. It was
70 converted from HTML to POD by software written by Chas Williams and Russ
71 Allbery, based on work by Alf Wachsmann and Elizabeth Cassell.</para>