From mboxrd@z Thu Jan 1 00:00:00 1970 From: Anthony Wright Subject: Re: USB disk corruption on Xen 4.1.0 & Linux 2.6.38.7 Date: Thu, 02 Jun 2011 16:59:12 +0100 Message-ID: <4DE7B350.6010404@overnetdata.com> References: <20110601142349.GD4081@dumpdata.com> <19639651.14.1307017496558.JavaMail.root@zimbra.overnetdata.com> <20110602143807.GA31439@dumpdata.com> <20110602144411.GA31559@dumpdata.com> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <20110602144411.GA31559@dumpdata.com> List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Sender: xen-devel-bounces@lists.xensource.com Errors-To: xen-devel-bounces@lists.xensource.com To: Konrad Rzeszutek Wilk Cc: Ian Pratt , xen-devel@lists.xensource.com List-Id: xen-devel@lists.xenproject.org On 02/06/2011 15:44, Konrad Rzeszutek Wilk wrote: > On Thu, Jun 02, 2011 at 10:38:07AM -0400, Konrad Rzeszutek Wilk wrote: >> On Thu, Jun 02, 2011 at 01:24:56PM +0100, Anthony Wright wrote: >>>> Do you get the same problem if you boot baremetal and do 'iommu=soft' (without the mem=4G)? You should see the same error. >>> I'm not quite sure what you mean by "boot baremetal", but I've just done a boot where I removed the mem=4096M options from the Xen boot line and added an 'iommu=soft' option. The result of this was a corrupt USB device again. >> Baremetal = no Xen. Tried a baremetal boot (no Xen) with ''iommu=soft" on the linux command line, and the USB reads fine. > I've an BIOSTART motherboard that looks to have a similar EHCI controller - MCP61 based. > Is the USB stick that you are using any special? Or is just a normal one? It's a Kingston DataTraveler G2 (2GB). It's the cheapest memory stick I could find at the time, nothing special as far as I know. I'll try to get the kernel sorted out to get around the screen corruption tonight, and try on another system tomorrow and with a different memory stick too. Cheers, Anthony.