Re: USB disk corruption on Xen 4.1.0 & Linux 2.6.38.7

[Anthony Wright <anthony@overnetdata.com>]

I hit it every time, though with slight variations on which blocks are affected. I get the problem on two out of three of my machines. I don't supply any command line options to Xen or the kernel. I do use an initramfs.

----- Original Message -----
From: "Konrad Rzeszutek Wilk" <konrad.wilk@oracle.com>
To: "Anthony Wright" <anthony@overnetdata.com>
Cc: "Ian Pratt" <Ian.Pratt@eu.citrix.com>, xen-devel@lists.xensource.com
Sent: Monday, 13 June, 2011 11:06:25 PM
Subject: Re: [Xen-devel] USB disk corruption on Xen 4.1.0 & Linux 2.6.38.7

On Fri, Jun 10, 2011 at 12:46:56PM -0400, Konrad Rzeszutek Wilk wrote:
> On Thu, Jun 09, 2011 at 09:32:08AM -0400, Konrad Rzeszutek Wilk wrote:
> > On Thu, Jun 09, 2011 at 02:11:27PM +0100, Anthony Wright wrote:
> > > I've got things running on a number of systems now, and have tried a
> > > number of combinations. I have changed machines and USB memory sticks,
> > > and the fault seems to be related to the machine rather than the memory
> > > stick. I have 3 machines with >4GB ram & 2 memory sticks, changing
> > > memory sticks doesn't have any effect, but only two out of the three
> > > machines I tried has a problem, the third works fine.
> > 
> > One of them was an MCP61 based (BIOSTAR) and the other is
> > SB600 (Gigabyte gs_ma69vm_s2) Southbridge. Both are AMD based ... and
> > I vagually remember something about quirks for those boards for the AHCI
> > controller.
> > 
> > Let me see if I can reproduce this issue on my box next week.
> 
> I tried on my BIOSTAR Group N61PB-M2S which has 4GB physically
> and couldn't reproduce it. But let me try to put in some more memory and see.

So, playing around on a 8gB machine with ballooning memory up (I had initially set
only 2GB to dom0) and then using the md5sum I was able to trigger this once.

You said you are hitting this everytime right? Do you limit the amount of memory
to the initial domain?

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