Subject: Re: [BK PATCHES] ide-2.6 update
From: Kevin Freeman <kfreem02@comcast.net>
To: linux-kernel@vger.kernel.org
Cc: edmudama@gmail.com
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Date: Sat, 30 Oct 2004 21:27:25 -0500
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Eric wrote:
> One of two things is happening: 
> 
> 1) Two drives are identically corrupted, producing the invalid serial
> numbers being reported in the ID block.  My belief is that this wasn't
> likely, given the low volume of reports.  The reported bad SN was
> "M0000000000000000000" which based on our firmware, I don't see how it
> could happen.  A corruption of the config sector (the most likely
> cause) *should* be catastrophic to the drive's functionality.
> 
> 2) There is a code or hardware bug somewhere outside of the drive
> itself that is causing this data to become corrupted.
> 
> Either way, I believe the best course of action is to RMA the drives
> for new ones.  I don't think good stuff will come from having the
> linux kernel use drives that appear to be broken.
> 
> It'd be nice to test these drives on more systems, or with a bus
> analyzer, to identify the cause.
> 
> --eric

I am experiencing the same problem with recent kernels.  This machine
has 2 Maxtor drives (4D080H4) with the same invalid serial number
( D4000000 ).  The machine was happily running Fedora Core 2 for quite
some time with no hard drive errors.  The drives themselves were
previously installed in a Windows XP machine, also without incident.
Note that in the current machine, Windows XP 64-bit beta Device Manager
also displays an error related to duplicate drive IDs.

System motherboard is a Chaintech VNF3-250 (NForce3). One drive is on
the onboard IDE controller, the other is attached to a Silicon Image PCI
IDE controller. Connecting both drives to the onboard IDE controller
under Linux results in the error message "ignoring undecoded slave"
and /dev/hdb is not available to the system.  Fedora kernel 2.6.8-1.521
(based on 2.6.8-rc4-bk3) was among the last to allow the system to boot
with both drives attached to the onboard IDE controller.

hdparm, dmesg output at:
http://home.comcast.net/~kfreem02/4D080H4/index.html

Please cc me on any followups.

Thanks,
Kevin Freeman

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