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Re: [Qemu-devel] [PATCH v2 1/2] qcow2: include LUKS payload overhead in

From: Max Reitz
Subject: Re: [Qemu-devel] [PATCH v2 1/2] qcow2: include LUKS payload overhead in qemu-img measure
Date: Fri, 15 Feb 2019 20:11:44 +0100
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:60.0) Gecko/20100101 Thunderbird/60.5.0

On 23.01.19 11:33, Stefan Hajnoczi wrote:
> LUKS encryption reserves clusters for its own payload data.  The size of
> this area must be included in the qemu-img measure calculation so that
> we arrive at the correct minimum required image size.
> (Ab)use the qcrypto_block_create() API to determine the payload
> overhead.  We discard the payload data that qcrypto thinks will be
> written to the image.
> Signed-off-by: Stefan Hajnoczi <address@hidden>
> ---
>  block/qcow2.c | 72 ++++++++++++++++++++++++++++++++++++++++++++++++++-
>  1 file changed, 71 insertions(+), 1 deletion(-)

Reviewed-by: Max Reitz <address@hidden>

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