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Vanguard Multiport 4520CP Controller User’s Guide 6-5
The xxtrace Driver Tracing Utility
where n is the board number in the system starting with 0, and p is the port
number, starting with 0.
For example, xb 0:3 turns on tracing for the first Aurora card in the system
for port 3.
5. To show that tracing is turned on, type:
system# xs
The system displays a list of all the trace points.
6. Reproduce the situation that was occurring when you encountered the problem.
7. As soon as the failure condition occurs (to avoid overwriting any buffers), dump
the contents of the trace buffer out of memory and print it by typing:
system# xp
This command prints data to standard output. You can redirect the contents to a
file, using this format:
system# xp > /tmp/filename
where <filename> is the name of the redirected output file in the /tmp directory.
8. Find out how many lines the trace output is by doing a
wc -l on the file.
To clear the trace buffer and restart tracing, keeping the same port(s) and events
active, enter
system# xc
If the output is not very long, you can FAX it to us. Otherwise, tar it to a diskette
and send it to us addressed to Customer Service and Support or compress, uuen-
code, and e-mail it to
support@auroratech.com.
To make the system operational again
1. Clear the trace buffer and shut off tracing:
system# xr
2. Now reboot the system:
system# reboot