> > >   I've got a 4801-60 (comBIOS ver. 1.30  20070326) running
> > > a SanDisk SDCFX-8192 (LBA Xlt 996-255-63  8003 Mbyte) with
> > > FreeBSD 5.5-STABLE.
> > >   When I received the unit, it ran fine for many many months. 
> > > Then out of the blue it started to lock up for no reason every couple
> > > of weeks. Now it can't go more than 12 hours. 
>       I just tried another power supply. Lasted 18 hours 15 minutes
> 14 seconds. 
>       The power light is on, the net light is blinking, I can't get
> anything off the console, nor seem to drop the OS into debugger mode.

Setup the kernel watchdog(8).
Briefly, watchdog -t 10 allows the box to run for 10 seconds,
if the watchdog isn't triggered in that time, the box will
panic, coredump, and you can use the coredump to see what happens.

The idea is that you re-trigger the watchdog (from cron?),
if userland is unable to re-trigger it, something is amiss
and a crashdump is worth looking into.

It is not a stopgap measure, just a tool to get data about the state
of the box once userland is no longer alive.

I don't have extensive experience with the FreeBSD watchdog,
but it looks similar to the BSD/OS one. Experiment.

Geert Jan

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