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Re: [PATCH v2 0/2] qcow2: Force preallocation with data-file-raw


From: Max Reitz
Subject: Re: [PATCH v2 0/2] qcow2: Force preallocation with data-file-raw
Date: Tue, 30 Mar 2021 13:03:30 +0200
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:78.0) Gecko/20100101 Thunderbird/78.8.0

On 26.03.21 15:55, Max Reitz wrote:
v1: https://lists.nongnu.org/archive/html/qemu-block/2020-06/msg00992.html


Hi,

I think that qcow2 images with data-file-raw should always have
preallocated 1:1 L1/L2 tables, so that the image always looks the same
whether you respect or ignore the qcow2 metadata.  The easiest way to
achieve that is to enforce at least metadata preallocation whenever
data-file-raw is given.

Thanks for the review, applied to my block branch:

https://git.xanclic.moe/XanClic/qemu/commits/branch/block

Max




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