Re: [Xen-devel] [BUG] blkback reporting incorrect number of sectors, unable to boot

[Paul Durrant <Paul.Durrant@xxxxxxxxxx>]

> -----Original Message-----
> From: Xen-devel [mailto:xen-devel-bounces@xxxxxxxxxxxxx] On Behalf Of
> Roger Pau Monné
> Sent: 09 November 2017 09:30
> To: Mike Reardon <mule@xxxxxxxx>
> Cc: Konrad Rzeszutek Wilk <konrad.wilk@xxxxxxxxxx>; Jan Beulich
> <JBeulich@xxxxxxxx>; xen-devel@xxxxxxxxxxxxx
> Subject: Re: [Xen-devel] [BUG] blkback reporting incorrect number of
> sectors, unable to boot
> 
> Please try to avoid top-posting.
> 
> On Wed, Nov 08, 2017 at 08:27:17PM -0700, Mike Reardon wrote:
> > So am I correct in reading this that for at least the foreseeable future
> > storage using 4k sector sizes is not gonna happen?  I'm just trying to
> > figure out if I need to get some different hardware.
> 
> Have you tried to use qdisk instead of blkback for the storage
> backend?
> 
> You will have to change your disk configuration line to add
> backendtype=qdisk.

From my reading qdisk (i.e. xen_disk.c in the QEMU source) hard-codes its block 
size to 512, but at least it looks like it won't mis-report the number of 
sectors.

  Paul

> 
> Roger.
> 
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