linux-kernel - Re: usb hdd problems with 2.6.27.2

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Date:	Mon, 27 Oct 2008 11:14:54 +0000
From:	Luciano Rocha <luciano@...otux.com>
To:	James Bottomley <James.Bottomley@...senPartnership.com>
Cc:	Alan Stern <stern@...land.harvard.edu>,
	"Rafael J. Wysocki" <rjw@...k.pl>,
	Linux-Kernel <linux-kernel@...r.kernel.org>,
	USB list <linux-usb@...r.kernel.org>,
	SCSI development list <linux-scsi@...r.kernel.org>
Subject: Re: usb hdd problems with 2.6.27.2

On Sat, Oct 25, 2008 at 03:11:33PM -0500, James Bottomley wrote:
> On Sat, 2008-10-25 at 15:50 -0400, Alan Stern wrote:
> > On Sat, 25 Oct 2008, Rafael J. Wysocki wrote:
> > 
> > > [Adding CCs]
> > > 
> > > On Wednesday, 22 of October 2008, Luciano Rocha wrote:
> > > > 
> > > > Hello,
> > > > 
> > > > An external HDD, usb-encased, works fine under 2.6.26.5, but under
> > > > 2.6.27.2 I get hundreds of errors per second, of 'No Sense [current]'.
> > 
> > You can use usbmon to capture the details of what happens when you plug
> > in the drive.  Instructions are in the kernel source file
> > Documentation/usb/usbmon.txt.
> 
> Try reversing this patch (apply with patch -p1 -R)
> 
> James
> 
> ---
> 
> commit 10dab22664914505dcb804d9ad09cad6bc94d349
> Author: Jamie Wellnitz <Jamie.Wellnitz@...lex.com>
> Date:   Thu Sep 11 21:39:36 2008 -0400
> 
>     [SCSI] sd: Fix handling of NO_SENSE check condition
>     
>     The current handling of NO_SENSE check condition is the same as
>     RECOVERED_ERROR, and assumes that in both cases, the I/O was fully
>     transferred.

<snip>

2.6.27.4 comes with it reverted. But I still get the same error.
Reapplied it as one more test, with the same error.

Regards,
Luciano Rocha

-- 
Luciano Rocha <luciano@...otux.com>
Eurotux Informática, S.A. <http://www.eurotux.com/>

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