Subject: Re: Savecore Complexity Questions
To: Martin Husemann <>
From: Manuel Bouyer <>
List: tech-userlevel
Date: 12/10/2007 19:09:29
On Mon, Dec 10, 2007 at 06:37:09PM +0100, Martin Husemann wrote:
> On Mon, Dec 10, 2007 at 09:31:23AM -0800, Brian Buhrow wrote:
> > 	Hello.  I think the reason for all that complexity is because there is
> > no guarantee that a very stale core image won't be erased from the swap
> > partition during subsequent runs after the actual crash.
> Savecore overwrites the core magic ID after a succesfull dump, so that is
> no problem.
> I don't know what the original intend of the (few bits of) kvm grovelling
> inside the core dump are, but I think there are a few bits of information
> that the current core format/header do not provide but savecore (for the
> current format) needs - if the new format does not need that, fine, skip the
> kvm access.

savecore tries to extract the panic string to syslog it. I think it's
valuable to keep this functionality.

Manuel Bouyer <>
     NetBSD: 26 ans d'experience feront toujours la difference