Re: [Qemu-block] [PATCH v2 1/2] qcow2: include LUKS payload overhead in qemu-img measure

[Max Reitz]

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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