linux-kernel - Re: [PATCH] Introduce softpanic

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Message-ID: <alpine.LSU.0.999.0801251706200.2201@be1.lrz>
Date:	Fri, 25 Jan 2008 18:31:44 +0100 (CET)
From:	Bodo Eggert <7eggert@....de>
To:	Andi Kleen <andi@...stfloor.org>
cc:	Bodo Eggert <7eggert@....de>, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] Introduce softpanic

On Fri, 25 Jan 2008, Andi Kleen wrote:
> Bodo Eggert <7eggert@....de> writes:

> > Enabling this option changes a hard panic on boot errors to a
> > soft panic, which does not stop the system completely.
> > You can still scroll the screen and read the messages.
> 
> I don't think it's a good idea to keep the network running in the
> soft panic. A lot of people have set ups that use ping was a watchdog
> and with nfsroot/ip=dhcp ping does work quite well before
> mounting root and then the watchdog might not pick up the 
> soft panic.

> Using a polled keyboard driver after panic seems to be the better
> option to me, but if you want softpanic you should probably
> at least add a suitable panic notifier to the network stack 
> to shut it all down.

I have no idea on how to do it. If somebody has a big red arrow pointing to 
a HOWTO, I can give it a try.

OTOH, I think the panic timeout should do the job nicely.
-- 
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