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Alf Wachsmann > AFS-Monitor-0.3.2 > cmdebug


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Source   Latest Release: AFS-Monitor-0.3.3


cmdebug - Reports status of cache manager and cache entries on a particular AFS client machine.


  use AFS::Monitor qw(cmdebug);

  my ($locks, $cache_entries) =
      cmdebug(server => "hostName",
              port   => 7001,
              long   => 1


The cmdebug function can be used to examine the status of the cache manager and cache entries on a particular AFS client machine. This function is useful when you suspect that the cache manager is hung, or is performing poorly.



Names the client machine to examine.


This switch is only useful with port 7001 since that is the callback port.


This switch will display the status of all of the cache entries on the AFS client when there are no problems.

As a first step in diagnosing a problem, run cmdebug without the long switch. A machine running in a normal state (i.e. not experiencing any problems), may display some locks set, but these locks should not be continually set over multiple cmdebugs. If the functions returns with no output, it simply means there is nothing to report.


The return values are references to two arrays. Each entry in the first array represents the status of the cache manager's data structures. Each entry in the second array represents an individual cache entry.


The code and documentation for this class were contributed by Stanford Linear Accelerator Center, a department of Stanford University. This documentation was written by

Elizabeth Cassell <> and
Alf Wachsmann <>


 Copyright 2004 Alf Wachsmann <> and
                Elizabeth Cassell <>
 All rights reserved.

 Most of the explanations in this document are taken from the original
 AFS documentation.

 AFS-3 Programmer's Reference:
 Volume Server/Volume Location Server Interface
 Edward R. Zayas
 (c) 1991 Transarc Corporation.
 All rights reserved.

 IBM AFS Administration Reference
 (c) IBM Corporation 2000.
 All rights reserved.

 This library is free software; you can redistribute it and/or modify it
 under the same terms as Perl itself.
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