FreeBSD 8.0 - network stack crashes?

[Ivan Voras]

Weldon S Godfrey 3 wrote:

> I don't 
> know how to troubleshoot this further on the server since I am not 
> getting any problems indicated in logging, panics, cores, etc.

If you have console access to the system, the generic advice would be to 
compile a kernel with the kernel debugger - options KDB and DDB (see 
http://www.freebsd.org/doc/en/books/developers-handbook/kerneldebug-online-ddb.html), 
enter the debugger, force a kernel dump file to be created (by entering 
"call doadump") and then proceed with post-mortem examination of the 
kernel at your leisure (e.g. from a remote ssh console, etc).

See 
http://www.freebsd.org/doc/en/books/developers-handbook/kerneldebug-deadlocks.html 
for instructions on what information to collect.

If you can provoke your problem with using WITNESS that would probably 
be great, but it will slow down your production machine noticeably. When 
WITNESS is enabled you might also get more information - such as LOR 
warnings, which you should also collect.

Keep the dump file, someone might ask you for more information.

Good luck!