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Re: [Qemu-block] [PATCH] doc: Preallocation does not require writing zer

From: Max Reitz
Subject: Re: [Qemu-block] [PATCH] doc: Preallocation does not require writing zeroes
Date: Thu, 15 Aug 2019 18:10:53 +0200
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:60.0) Gecko/20100101 Thunderbird/60.8.0

On 11.07.19 15:29, Max Reitz wrote:
> When preallocating an encrypted qcow2 image, it just lets the protocol
> driver write data and then does not mark the clusters as zero.
> Therefore, reading this image will yield effectively random data.
> As such, we have not fulfilled the promise of always writing zeroes when
> preallocating an image in a while.  It seems that nobody has really
> cared, so change the documentation to conform to qemu's actual behavior.
> Signed-off-by: Max Reitz <address@hidden>
> ---
>  qapi/block-core.json         | 9 +++++----
>  docs/qemu-block-drivers.texi | 4 ++--
>  qemu-img.texi                | 4 ++--
>  3 files changed, 9 insertions(+), 8 deletions(-)

Thanks for the reviews, applied to my block-next branch.


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