Panic on boot. How do I get a kernel dump.

Peter Jeremy peterjeremy at
Sat Apr 28 02:03:05 UTC 2007

On 2007-Apr-27 16:22:48 -0700, Tom Cumming <tcumming123 at> wrote:
>  .. or number 3) I can use my existing dump analysis tools and scripts to
>examine the dump, and I cannot run the scripts from the console prompt.

You can probably do this using a remote GDB session.  See

>I don't follow the geom code... is there a place in geom where I could put
>something like, geom->dumpdev = "mydevice"?

No.  Kernel dumping now relies far more on the device infrastructure
and isn't amenable to static initialisation.  If you feel like looking,
check out kern_shutdown.c:dumper.

Peter Jeremy
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