From: Pavel Machek <pavel@suse.cz>
To: Lars Marowsky-Bree <lmb@suse.de>
Cc: "J.A. Magallon" <jamagallon@able.es>, linux-kernel@vger.kernel.org
Subject: Re: writing OOPS/panic info to nvram?
Date: Fri, 6 Sep 2002 10:09:33 +0000 [thread overview]
Message-ID: <20020906100933.E35@toy.ucw.cz> (raw)
In-Reply-To: <20020904144938.GA1106@marowsky-bree.de>; from lmb@suse.de on Wed, Sep 04, 2002 at 04:49:38PM +0200
Hi!
> > Ah, ther is no way to write raw blocks at a very low level to disk...??
>
> Not reliably; you _know_ your infrastructure has crashed, otherwise you
> wouldn't be inside the crash dump handler ;), so you can't possibly trust the
> normal block layer to write the crash dump (and not write it over your salary
> and customer database).
Floppy seems like safe choice. Verify its special "crash floppy" by checking
signature, then write.
> A network dump is much safer, though I would suggest running it over a
> dedicated card / driver combo and on a special ethernet protocol, because you
> might have lost your IP configuration...
Its enough for it to work 99% cases. Separate ethernet card is overkill,
serial console is easier than that.
Pavel
--
Philips Velo 1: 1"x4"x8", 300gram, 60, 12MB, 40bogomips, linux, mutt,
details at http://atrey.karlin.mff.cuni.cz/~pavel/velo/index.html.
next prev parent reply other threads:[~2002-09-06 20:52 UTC|newest]
Thread overview: 22+ messages / expand[flat|nested] mbox.gz Atom feed top
2002-09-04 11:50 Roy Sigurd Karlsbakk
2002-09-04 12:02 ` Morten Helgesen
2002-09-04 12:21 ` Alan Cox
2002-09-04 12:31 ` Morten Helgesen
2002-09-04 12:49 ` Alan Cox
2002-09-04 12:54 ` Morten Helgesen
2002-09-04 14:02 ` Remco Post
2002-09-04 14:08 ` J.A. Magallon
2002-09-04 14:23 ` Remco Post
2002-09-06 10:06 ` Pavel Machek
2002-09-10 14:55 ` Remco Post
2002-09-13 17:03 ` Pavel Machek
2002-09-04 14:25 ` Alan Cox
2002-09-04 14:41 ` J.A. Magallon
2002-09-04 14:49 ` Lars Marowsky-Bree
2002-09-06 10:09 ` Pavel Machek [this message]
2002-09-04 23:34 ` Paul Mackerras
2002-09-04 23:48 ` David S. Miller
2002-09-05 0:07 ` Alan Cox
2002-09-06 6:48 ` Rusty Russell
2002-09-05 10:38 ` Suparna Bhattacharya
2005-01-24 15:18 Christoph Stueckjuergen
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