The right way:
>I want to attach to the output stream of an existing terminal. I want
>to "tee" that output to the serial device so I can send it to another
>machine that will log and save the output. The terminal in question is
>created and started by "the system". It is acutally /dev/tty10, and is
>receiving log messages about kernel activity.
One or more of these:
* Boot with `console=ttyS0 console=tty0` to copy kernel messages to
both ttyS0 and the regular console. This should DTRT for Oops and
Panics
* use net console
And optionally:
* configure syslog to write to both ttyS0 and tty10 (if you need that)
>Other option suggested was to take a photo of the screen, but the messages
>disappear off the top of the page (due to the recursive nature of the thing)
>before I can switch terminals, so this isn't a very useful option.
There exist no recursive panics. What you see must be a recursive oops.
>Come to think of it, the last time I had a kernel panic, it was under Solaris,
>and I used "kdb" to capture it I think (too long ago to remember clearly!) Is
>there a similar facility in Linux? (Solaris/kdb starts the whole darn kernel
>under a debugger from the OBP (forth) boot prom prompt).
There is also a KDB for Linux, but I am not sure if it is built into the kernel
by default (gives me a compile error blech).
-`J'
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