DFly-stable as of April 1st crashed, but no crash dump was possible due to ips driver being unable to do crash dumps

[Tomaž Borštnar]

Hello!

	This morning I update Dfly-stable from end of October to April 1st 
version and already got one crash - due to some sort of panic (Panic-A 
something?). Unfortunately even though I have :

dumpdev="/dev/ipsd0s1b" # Device name to crashdump to (or NO).
dumpdir="/net/crash"    # Directory where crash dumps are to be stored
in both rc.conf and loader.conf machine was not able to do anything 
about it. It was stuck in "Syncing disks...". So no logs.

I can try to connect serial port to another machine and log everything 
there, but would need a bit of advice what to do to catch more info next 
time.

Also, would some watchdog thing help in this case to at least restart 
the machine if some userland program was not updating its timer? Or 
maybe this:

# Set the amount of time (in seconds) the system will wait before
# rebooting automatically when a kernel panic occurs.  If set to (-1),
# the system will wait indefinitely until a key is pressed on the
# console.
options         PANIC_REBOOT_WAIT_TIME=16
Thanks in advance.

Tomaz