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Date: Fri, 27 Sep 2013 08:58:20 -0400
From: Jeff Cody <jcody@redhat.com>
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Subject: Re: [Qemu-devel] [PATCH v6 18/20] block: qemu-iotests for vhdx,
 read sample dynamic image
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To: qemu-devel@nongnu.org
Cc: kwolf@redhat.com, famz@redhat.com, stefanha@redhat.com

On Wed, Sep 25, 2013 at 05:03:03PM -0400, Jeff Cody wrote:
> This adds the VHDX format to the qemu-iotests format, and adds
> a read test.  The test reads from an existing sample image, that
> was created with Hyper-V under Windwos Server 2012.
> 
> The image file is a 1GB dynamic image, with 32MB blocks.
> 
> The pattern 0xa5 exists from 0MB-33MB (past a block size boundary)
> 
> The pattern 0x96 exists from 33MB-66MB (past another block boundary,
> and leaving a partial blank block)
> 
> From 66MB-1024MB, all reads should return 0.
> 
> Although 1GB dynamic image with 66MB of data, the bzip2'ed image
> file size is only 874 bytes.
> 
> Signed-off-by: Jeff Cody <jcody@redhat.com>

This has been superseded by this stand-alone patch:

    [PATCH v4] block: qemu-iotests for vhdx, read sample dynamic image