Translators/debug

From GlusterDocumentation

These translators are useful while you want to debug filesystem.

Translator debug/trace

The trace translator produces extensive trace information for debugging purposes. The debug information is written to the GlusterFS log file, which by default is found in /var/log/gluster/glusterfs.log. Trace volume can be inserted or layered on top of any volume that needs to be debugged. All the calls are logged with their arguments/values.

### Export volume "brick" with the contents of "/home/export" directory.
volume brick
  type storage/posix                   # POSIX FS translator
  option directory /home/export        # Export this directory
end-volume

### Trace storage/posix translator.
volume trace
  type debug/trace
  subvolumes brick
#  option include open,close,create,readdir,opendir,closedir
#  option exclude lookup,read,write
end-volume

Notes:

If you want to trace only few calls through the trace translator, use "option include <fopslist>"
If you want to trace most of the calls, use "option exclude <fopslist>".

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