According to Kanoj Sarcar ...
>
> >
> > Every origin module is shipped with a baseio by default. So if
> > all modules have a baseio intact and if either node board N1 or
> > N3 is available and enabled, the console will be available on one of
> > them.
>
> I disabled all the 4 cpus on N1 and N3 (by mistake). So, is there no
> way N2 and N4 cpus can get to the console? I was under the assumption
No, N2 and N4 cannot get to the console if the baseio board is anywhere
between slots io1 to io6. If it is in io7 to io12, then only N2 and N4
can talk to them.
The PROM during boot, 'knows` that it will not have a console and
wants to tell it to the user. But there is no console to
tell it :-) I think it is too early to send a msg to the sys controller.
There may be some LED patterns for this, but I am not sure.
Also it will the LEDs on one of the node boards and you have to look
at each node board for tell tale LED patterns :-(
> that any cpu could get to any device on the system. Of course, it does
> not make sense to build all this intelligence into the PROM, just to
> safeguard against rare administrator mistakes.
All this is part of the sys adm guide and notes.
>
> Kanoj
>
> >
> > Conditions for no console are that all modules except 1 have baseio.
> > N1 and N3 on this module are disabled etc.
> >
> > Thanks
> > srinivasa
> >
> >
>
|