Date: Thu, 27 Dec 2001 12:43:01 -0500 From: Garance A Drosihn <drosih@rpi.edu> To: thomas@cuivre.fr.eu.org Cc: freebsd-current@FreeBSD.ORG Subject: Re: reboot -p Message-ID: <p05101003b8510bd15ac4@[128.113.24.47]> In-Reply-To: <47197.1009447811@critter.freebsd.dk> References: <47197.1009447811@critter.freebsd.dk>
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>Thomas Quinot writes:
>> Currently, when reboot is invoked with the '-p' command line flag
>> (powerdown), it performs a shutdown with RB_HALT|RB_POWEROFF.
>> In some situations, it can be useful to try to perform a poweroff,
>> but reboot if it fails (e.g. when you are shutting down the system
>> as a result of a power failure, you want the system to reboot,
> > *not* stay down, if power was restored after the start of the
> > shutdown procedure). It would be nice if reboot was changed to
> > pass only RB_POWEROFF (without RB_HALT) when invoked with '-p'.
> > Of course halt(8) would be unaffected and still pass
> > RB_HALT|RB_POWEROFF when invoked as halt -p.
> >
> >What do others think of this change:
If I understand what you are saying, the situation that you describe
seems odd to me. If I do the command:
shutdown -p now Power Failure\!
then I expect the machine to power-off if possible, or at least
halt if a power-off is not possible. Why would I want it to
immediately reboot in that situation?
If I understand your request, you would want
shutdown -p now
to behave the same as
shutdown -r now
if the operating system does not know how to power down the hardware.
Is that what you want?
I guess I don't object to that, if that's what you want, but it does
seem a little odd to me. I assume that an explicit
shutdown -h -p now
would still halt the machine if the OS doesn't know how to power off
the machine. By the way, what happens right now if someone does a
shutdown -r -p now
? Does that behave the way you want for your situation?
--
Garance Alistair Drosehn = gad@eclipse.acs.rpi.edu
Senior Systems Programmer or gad@freebsd.org
Rensselaer Polytechnic Institute or drosih@rpi.edu
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