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From: Eric Blake <eblake@redhat.com>
To: Jeff Cody <jcody@redhat.com>
Cc: kwolf@redhat.com, famz@redhat.com, qemu-devel@nongnu.org,
	stefanha@redhat.com
Subject: Re: [Qemu-devel] [PATCH 1/2] block: qemu-iotests - add basic ability to use binary sample images
Date: Fri, 20 Sep 2013 06:46:56 -0600	[thread overview]
Message-ID: <523C43C0.8030907@redhat.com> (raw)
In-Reply-To: <072dca92f6fa9125b3e8e34e07141cef06d4ff56.1379648036.git.jcody@redhat.com>

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On 09/19/2013 09:48 PM, Jeff Cody wrote:
> For image formats that are not "QEMU native", but supported for
> compatibility, it is useful to verify that an image created with
> the 'gold standard' native tool can be read / written to successfully
> by QEMU.
> 
> In addition to testing non-native images, this could also be useful to
> test against image files created by older versions of QEMU.
> 
> This provides a directory to store small sample images, for use by
> scripts in tests/qemu-iotests.
> 
> The MANIFEST file should be updated when a new image is added to the
> directory, to give some idea about the nature of the image and the
> data store therein.
> 
> Image files should be compressed with bzip2.

Why bzip2?  xz beats bzip2 in both compression ratio and decompression
speed; or if you are worried about portability, gzip is present on more
machines.  bzip2 will probably be around for some time, but it is no
longer the compression engine of choice.

-- 
Eric Blake   eblake redhat com    +1-919-301-3266
Libvirt virtualization library http://libvirt.org


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  parent reply	other threads:[~2013-09-20 12:47 UTC|newest]

Thread overview: 11+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2013-09-20  3:48 [Qemu-devel] [PATCH 0/2] qemu-iotests with sample images, vhdx read test Jeff Cody
2013-09-20  3:48 ` [Qemu-devel] [PATCH 1/2] block: qemu-iotests - add basic ability to use binary sample images Jeff Cody
2013-09-20 12:32   ` Stefan Hajnoczi
2013-09-20 12:41     ` Jeff Cody
2013-09-20 12:46   ` Eric Blake [this message]
2013-09-20 13:23     ` Jeff Cody
2013-09-20  3:48 ` [Qemu-devel] [PATCH 2/2] block: qemu-iotests for vhdx, read sample dynamic image Jeff Cody
2013-09-20  9:10   ` [Qemu-devel] [PATCH 2/2] block: qemu-iotests for vhdx, read sample dynamic imagee Alex Bennée
2013-09-20  9:18     ` Kevin Wolf
2013-09-20 10:54       ` Alex Bennée
2013-09-20 11:24       ` Jeff Cody

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