3
VLLog - Traces Volume Location Server operations
7
The F<VLLog> file records a trace of Volume Location (VL) Server
8
(B<vlserver> process) operations on the local machine and describes any
9
error conditions it encounters.
11
If the F<VLLog> file does not already exist in the
12
F</usr/afs/logs> directory when the VL Server starts, the server
13
process creates it and writes initial start-up messages to it. If there
14
is an existing file, the VL Server renames it to F<VLLog.old>,
15
overwriting the existing F<VLLog.old> file if it exists.
17
The file is in ASCII format. Administrators listed in the
18
F</usr/afs/etc/UserList> file can use the B<bos getlog> command to display
19
its contents. Alternatively, log onto the server machine and use a text
20
editor or a file display command such as the UNIX B<cat> command. By
21
default, the mode bits on the F<VLLog> file grant the required C<r> (read)
22
permission to all users.
24
The VL Server records operations only as it completes them, and cannot
25
recover from failures by reviewing the file. The log contents are useful
26
for administrative evaluation of process failures and other problems.
28
The VL Server can record messages at three levels of detail. By default,
29
it records only very rudimentary messages. To increase logging to the
30
first level of detail, issue the following command while logged onto the
31
database server machine as the local superuser C<root>.
33
# kill -TSTP <vlserver_pid>
35
where <vlserver_pid> is the process ID of the vlserver process, as
36
reported in the output from the standard UNIX B<ps> command. To increase
37
to the second and third levels of detail, repeat the command.
39
To disable logging, issue the following command.
41
# kill -HUP <vlserver_pid>
43
To decrease the level of logging, first completely disable it and then
44
issue the C<kill -TSTP> command as many times as necessary to reach the
55
IBM Corporation 2000. <http://www.ibm.com/> All Rights Reserved.
57
This documentation is covered by the IBM Public License Version 1.0. It was
58
converted from HTML to POD by software written by Chas Williams and Russ
59
Allbery, based on work by Alf Wachsmann and Elizabeth Cassell.