Re: [PATCH 0/4] qcow2: Add keep_data_file command-line option

[Kevin Wolf <kwolf@redhat.com>]

Am 30.05.2025 um 10:44 hat Hanna Czenczek geschrieben:
> Hi,
> 
> This series adds a keep_data_file qemu-img create option to qcow2 that
> makes it keep the given external data file for a newly created image
> instead of overwriting it.
> 
> This allows to create a qcow2 image for an existing raw image using the
> qemu-img create command, which previously wasn’t easily possible
> (besides work-arounds using a temporary data file or qemu-img amend).
> 
> (The “proper” way of doing it without this option is to use QMP
> blockdev-create.)
> 
> This new option is a pure qemu-img create (i.e. command-line) option,
> not available via QMP, because it does not make any sense there.  See
> patch 1 for more explanation.
> 
> (See https://issues.redhat.com/browse/RHEL-73509 for perhaps a bit more
> context.)
> 
> 
> Hanna Czenczek (4):
>   qcow2: Add keep_data_file command-line option
>   qcow2: Simplify size round-up in co_create_opts
>   iotests/common.filter: Sort keep_data_file
>   iotests/244: Add test cases for keep_data_file

Thanks, applied to the block branch.

Kevin