From: Lars Marowsky-Bree <lmb@suse.de>
To: "J.A. Magallon" <jamagallon@able.es>
Cc: linux-kernel@vger.kernel.org
Subject: Re: writing OOPS/panic info to nvram?
Date: Wed, 4 Sep 2002 16:49:38 +0200 [thread overview]
Message-ID: <20020904144938.GA1106@marowsky-bree.de> (raw)
In-Reply-To: <20020904144154.GE1949@werewolf.able.es>
On 2002-09-04T16:41:54,
"J.A. Magallon" <jamagallon@able.es> said:
> 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).
Parts of this could probably be circumvented by a checksum of the code which
is computed at boot time and checked before the crashdump takes place, but this doesn't deal with a crashed SCSI driver.
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...
Sincerely,
Lars Marowsky-Brée <lmb@suse.de>
--
Immortality is an adequate definition of high availability for me.
--- Gregory F. Pfister
next prev parent reply other threads:[~2002-09-04 14:50 UTC|newest]
Thread overview: 22+ messages / expand[flat|nested] mbox.gz Atom feed top
2002-09-04 11:50 writing OOPS/panic info to nvram? 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 [this message]
2002-09-06 10:09 ` Pavel Machek
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
-- strict thread matches above, loose matches on Subject: below --
2005-01-24 15:18 Christoph Stueckjuergen
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