How to make a remote reboot when system has panic'ed ?

[Niels S. Eliasen]

Den 12/01/2009 kl. 15.29 skrev Nathan Whitehorn:

> Niels S. Eliasen wrote:
>> hi guys
>> Having some issues with the current kernel getting sound and  
>> keyboard working (thanks sofar Nathan! ) made me think about how to  
>> reboot when the system has panic'ed...  remotely ??
>> ie. a virtual CTRL-OPTION-POWER ?
>> is that possible at all?
>
> How remotely? During a panic, there is necessarily no network  
> access. Typing reset at the debugger prompt, though, via a serial  
> console or firewire (dcons) will cause a reboot, and the machine  
> with the other end of the console can be connected to the network.
dcons definitely is a possibility.... (never heard about it before  
though... ;-) )

I do have a "HP Webconsole J3591A" which basically gives me Ethernet  
to Serial Console capability...
I just(sic!) need some "hints/tips/tricks" to get one of the USB ports  
setup for "dumb" terminal (including obviously OpenFirmware)  
capability.....
(or can the modem port be used for this? probably not.... although it  
is a software modem only....)
BTW: we are talking about a TiBook (400 Mhz)....

>
>
>> and at the same time.... How about a automatic reboot after a power- 
>> outage ? (the option is available within MacOSX/YDL Linux as well) ??
>> just rambling ....
>
> See the sysctl dev.pmu.0.server_mode.
> -Nathan