linux-kernel - Re: 2.6.27.2 USB reset/IO Error problem when high load on ICH9 USB

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Date:	Sat, 1 Nov 2008 22:41:27 -0400 (EDT)
From:	Alan Stern <stern@...land.harvard.edu>
To:	Andrew Morton <akpm@...ux-foundation.org>
cc:	Kasper Sandberg <lkml@...anurb.dk>,
	LKML Mailinglist <linux-kernel@...r.kernel.org>,
	<linux-usb@...r.kernel.org>
Subject: Re: 2.6.27.2 USB reset/IO Error problem when high load on ICH9 USB

On Fri, 31 Oct 2008, Andrew Morton wrote:

> (cc linux-usb)
> 
> On Thu, 30 Oct 2008 06:22:49 +0100 Kasper Sandberg <lkml@...anurb.dk> wrote:
> 
> > Hello..
> > 
> > I had to write an image to some usb flash drives, more specifically, 4GB
> > kingston datatraveler sticks, and i figured, instead of doing just 1 at
> > a time, i may aswell do 4, so i plugged in 4, and started 4 dd's of the
> > images, to sdc, sdd, sde, sdf. However, i got usb disconnects and IO
> > error messages from the kernel, these are at end of message. I had
> > previously done ~5 writes of images to 5 other flash disks with no
> > problem, but when i tried the next batch, those 4, it gave these errors.
> > I killed the dd's, pulled them all out, and put in 1 at a time, and it
> > worked perfectly.

Sounds like a hardware problem.

Alan Stern

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