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From: joe briggs <jbriggs@briggsmedia.com>
Organization: BMS
To: Timothy Miller <miller@techsource.com>, Oleg Drokin <green@namesys.com>
Subject: Re: AMD MP, SMP, Tyan 2466, REISERFS I/O error
Date: Fri, 27 Jun 2003 09:01:47 -0400
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Cc: Edward Tandi <ed@efix.biz>, reiser@namesys.com,
       Artur Jasowicz <kernel@mousebusiness.com>,
       Brian Jackson <brian@brianandsara.net>,
       Bart SCHELSTRAETE <Bart.SCHELSTRAETE@dhl.com>,
       Kernel mailing list <linux-kernel@vger.kernel.org>
References: <BB1F47F5.17533%kernel@mousebusiness.com> <20030626115525.GA13194@namesys.com> <3EFB7E90.1090902@techsource.com>
In-Reply-To: <3EFB7E90.1090902@techsource.com>
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In this specific case of the Tyan S2466, it has 2 64/66 slots, and 4 32/33 
slots.   The chipset is the AMD 760MPX, AMD 762 system controller, and AMD 
768 peripheral controller, and the Winbound 83627 super i/o asic.  

I thought that this chipset actually had 2 pci controllers - one for the 
64-bit slots and the other for the 32-bit.  Am I wrong?

On Thursday 26 June 2003 07:15 pm, Timothy Miller wrote:
> Oleg Drokin wrote:
> > Is not this is one of those heavy-PCI loaded boxes that ocasionally
> > corrupt data when PCI is overloaded?
> > The log you quoted shows that suddenly tree nodes have incorrect content
> > (and the i/o error is because reiserfs does not know what to do with such
> > nodes). (and we hope to push the patch that will print device where error
> > have occured soon).
>
> The PCI spec doesn't allow more than four slots per bus.  Some boards
> try to put on 5 or 6 slots anyhow, violating the spec.  It's no wonder
> there are so many problems with those boards.
>
> You can often get them to work anyhow, but it involves swapping cards
> around in slots until you find an arrangement that works, but it's still
> unreliable.

-- 
Joe Briggs
Briggs Media Systems
105 Burnsen Ave.
Manchester NH 01304 USA
TEL 603-232-3115 FAX 603-625-5809 MOBILE 603-493-2386
www.briggsmedia.com
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