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fstrace(8)


NAME

   fstrace - Introduction to the fstrace command suite

DESCRIPTION

   The commands in the fstrace command suite are the interface that system
   administrators employ to trace Cache Manager operations for debugging
   purposes. Examples of Cache Manager operations are fetching file data
   or the status information used to produce output for the UNIX ls
   command.

   The fstrace command interpreter defines an extensive set of Cache
   Manager operations as the "cm" event set.  When the event set is
   activated, the Cache Manager writes a message to the "cmfx" trace log
   in kernel memory each time it performs one of the defined operations.
   The log expands only to a defined size (by default, 60 KB), after which
   it is overwritten in a circular fashion (new trace messages overwrite
   the oldest ones). If an operation of particular interest occurs, the
   administrator can afterward display the log on the standard output
   stream or write it to a file for later study. For more specific
   procedural instructions, see the OpenAFS Administration Guide.

   There are several categories of commands in the fstrace command suite:

   *   Commands to administer or display information about the trace log:
       fstrace clear, fstrace lslog, and fstrace setlog.

   *   Commands to set or display the status of the event set: fstrace
       lsset and fstrace setset.

   *   A command to display the contents of the trace log: fstrace dump.

   *   Commands to obtain help: fstrace apropos and fstrace help.

OPTIONS

   All fstrace commands accept the following optional flag.  It is listed
   in the command descriptions and described in detail here:

   -help
       Prints a command's online help message on the standard output
       stream. Do not combine this flag with any of the command's other
       options; when it is provided, the command interpreter ignores all
       other options, and only prints the help message.

PRIVILEGE REQUIRED

   To issue most fstrace commands, the issuer must be logged on as the
   local superuser "root" on the machine that is generating the trace log.

SEE ALSO

   fstrace_apropos(8), fstrace_clear(8), fstrace_dump(8), fstrace_help(8),
   fstrace_lslog(8), fstrace_lsset(8), fstrace_setlog(8),
   fstrace_setset(8)

COPYRIGHT

   IBM Corporation 2000. <http://www.ibm.com/> All Rights Reserved.

   This documentation is covered by the IBM Public License Version 1.0.
   It was converted from HTML to POD by software written by Chas Williams
   and Russ Allbery, based on work by Alf Wachsmann and Elizabeth Cassell.



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