You can gather information manually about an Xsan volume using the cvgather command. This occurs per filesystem. For example, to run on a volume named krypted, use the following command:
cvgather -f krypted -o /temp/krypted.debug
You can also enable the debug log to get much more detailed information about each transaction to/from the volume and metadata controllers. To enable the debug log, use the cvdb command.
The -g option will show the state of the debugger. The -e option will enable debugging and -d disables. So, to see the status of the debugger:
cvdb -g
To enable debugging:
cvdb -e
To disable debugging:
cvdb -d
To drop files into syslog:
cvdb -s syslog=debug