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Date: Fri, 12 Oct 2012 08:18:09 -0600
From: Eric Blake <eblake@redhat.com>
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Subject: Re: [Qemu-devel] [PATCH] qemu-img: Add --backing-chain option to
	info command
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To: Stefan Hajnoczi <stefanha@redhat.com>
Cc: Kevin Wolf <kwolf@redhat.com>, Kashyap Chamarthy <kashyap.cv@gmail.com>, qemu-devel@nongnu.org, =?UTF-8?B?QmVub8OudCBDYW5ldA==?= <benoit@irqsave.net>

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On 10/12/2012 08:09 AM, Stefan Hajnoczi wrote:
> The qemu-img info --backing-chain option enumerates the backing file
> chain.  For example, for base.qcow2 <- snap1.qcow2 <- snap2.qcow2 the
> output becomes:
>=20
>   $ qemu-img info --backing-chain snap2.qcow2
>   image: snap2.qcow2
>   file format: qcow2
>   virtual size: 100M (104857600 bytes)
>   disk size: 196K
>   cluster_size: 65536
>   backing file: snap1.qcow2
>   backing file format: qcow2
>=20
>   image: snap1.qcow2
>   file format: qcow2
>   virtual size: 100M (104857600 bytes)
>   disk size: 196K
>   cluster_size: 65536
>   backing file: base.qcow2
>   backing file format: qcow2
>=20
>   image: base.qcow2
>   file format: qcow2
>   virtual size: 100M (104857600 bytes)
>   disk size: 136K
>   cluster_size: 65536
>=20
> Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>

Very useful.

Reviewed-by: Eric Blake <eblake@redhat.com>

--=20
Eric Blake   eblake@redhat.com    +1-919-301-3266
Libvirt virtualization library http://libvirt.org


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