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From: Laszlo Ersek <lersek@redhat.com>
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Date: Wed, 16 Sep 2015 13:04:33 +0200
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Subject: Re: [Qemu-devel] help with understanding qcow2 file format
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To: Vasiliy Tolstov <v.tolstov@selfip.ru>
Cc: qemu-devel <qemu-devel@nongnu.org>

On 09/16/15 12:56, Vasiliy Tolstov wrote:
> Hi, I'm need help to understand qcow2 file format, can somebody explain
> to me, for example if i need to read 1K from offset 512?
> 
> As i'm understand i need to calculate offset in qcow2 file using some
> things from header, can somebody explains my how can i do that?

All I can say is, "docs/specs/qcow2.txt".

Laszlo