linux-kernel - Re: Kernel 2.6.20 does not work anymore with SCSI or SATA on old Opteron / Xeon servers

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Message-ID: <45FFB867.3060500@prie.be>
Date:	Tue, 20 Mar 2007 11:33:11 +0100
From:	Stefan Priebe <stefan@...e.be>
To:	Andrew Morton <akpm@...ux-foundation.org>
CC:	linux-kernel@...r.kernel.org, linux-scsi@...r.kernel.org
Subject: Re: Kernel 2.6.20 does not work anymore with SCSI or SATA on old
 Opteron / Xeon servers

Hello!

Here are more informations... the problem seems to be a little bit more 
special.

1.) I've bootet these systems through NFS and would like to access 
/dev/sda or /dev/sdb then. For example via fdisk and this does not work.

2.) I've now tested the following kernels -
2.6.18.8 - works
2.6.19.7 - works
2.6.20 - does not work
2.6.21-rc4 - does not work

3.) The funny thing is, i can boot the whole system via 2.6.18.8 for 
example - fdisk the harddisk and format it + plus copying the whole 
image with a 2.6.20.3 kernel - and then the Server installied works 
perfectly i also can fdisk /dev/sdb or so. It only does not work if the 
system itself is bootet via NFS...

Stefan

Andrew Morton schrieb:
> On Sun, 18 Mar 2007 21:50:46 +0100 Stefan Priebe <stefan@...e.be> wrote:
> 
>> Hello!
>>
>> We've a very strange Problem with Kernel 2.6.20.x
>>
>> If i try to access a SCSI or SATA Disk (tested with Adaptec U320 
>> ASC-29320, ICP Vortex 9024, Promise TX300) the whole server hangs - no 
>> output - no error on the screen - but it hangs completely. But it does 
>> not happen on all our systems affected are only old 604pin xeons and 
>> socket 940 Opterons. Socket F Opteron or 771 Xeons does work fine.
>>
>> I've also testet apci=off pci=routeirq but both does not help. The 
>> systems work fine with 2.6.19.x and before.
> 
> Well that's a bit sad.
> 
> Could you please set up netconsole
> (Documentation/networking/netconsole.txt) and add initcall_debug to the
> kernel boot command line and then send us the full bootup logs?
> 
> (Even better: serial console with earlyprintk).
> 
> If that doesn't shed any light, we might have to ask you to perform a
> git-bisect search to find the buggy commit, I'm afraid.

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