Message-ID: <20041104061744.84541.qmail@web26102.mail.ukl.yahoo.com>
Date: Thu, 4 Nov 2004 07:17:44 +0100 (CET)
From: Roland Kaeser <roli8200@yahoo.de>
Subject: Re: [uml-user] Harddisk Shutdown while UML Guest Shutdown
To: Chris Wedgwood <cw@f00f.org>
Cc: Blaisorblade <blaisorblade_spam@yahoo.it>,
       user-mode-linux-user@lists.sourceforge.net,
       LKML <linux-kernel@vger.kernel.org>
In-Reply-To: <20041104005145.GB17583@taniwha.stupidest.org>
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Hello

To Your questions:

> does this happen w/o the SKAS patch?
I don't have tried it. I will do it today

> uml is triggering a host OS bug
A host OS bug? How can I get this out from the machine?

As I wrote in a later mail, at the time the harddisk spins down, the uml kernel
causes a memory error. (German: Speicherfehler) core dump.

I will try to setup a test machine which You can access to test it by Yourself, I
think i can't discribe it completely enough to give You a point for a solution.

Roland


 --- Chris Wedgwood <cw@f00f.org> schrieb: 
> On Wed, Nov 03, 2004 at 08:21:55PM +0100, Roland Kaeser wrote:
> 
> > And no, the HOST!! freezes after exit of the guest kernel.
> 

> 
> > And i get a Kernel panic from the HOST!! kernel, this in case the
> > host (ide) harddisk drive spins down (but not spins up anymore).
> 
> oops details please
> 
> > My idea is that some routines to spin down the harddisk are been
> > routed outside the uml guest kernel or not been sucessfully removed
> > for the uml architecture.
> 
> unlikely, uml catches the ioctls hdparm uses (i have a patch for this
> cleaning things up somewhere or maybe it got merged).  uml shouldn't
> propagate the ioctls out
> 
> > Is it possible that the /sbin/halt binary can have made something
> > with the hosts harddisk?
> 
> not directly, but it might trigger something

> 
> > How can i get the kernel panic message from the host?
> 
> uml is triggering a host OS bug
> 
> 
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