[pve-devel] [PATCH qemu-server v1 1/3] fix #4888: qmrestore: add diskformat option

[Markus Frank]

On  2025-02-04 17:39, Fiona Ebner wrote:
> Am 04.02.25 um 17:21 schrieb Fiona Ebner:
>> Am 04.02.25 um 17:13 schrieb Markus Frank:
>>> Add an option to choose a file format (qcow2, raw, vmdk) when restoring
>>> a vm backup to file based storage. This options allows all disks to be
>>> recreated with the specified file format if supported by the target
>>> storage.
>>>
>>> Signed-off-by: Markus Frank <m.frank at proxmox.com>
>>> ---
>>> Choosing the file format and storage for each disk would require much
>>> more change and would be more in line with Feature Request #4275.
>>
>> It's not that much more change. And if we add this now and then the
>> implementation for the other feature, we'll have duplicate/conflicting
>> options, which is also not nice. We can deprecate this option then of
>> course and later drop, but why not just go for the more complete
>> solution directly? Or at least a solution that can be built upon for
>> adding that feature later?
> 
> Although I guess it can still serve as a fallback later too, so maybe we
> don't even need to drop it. For new multi-word options, please use
> kebap-case. Also, the option should not be "pve-qm-image-format", but
> "pve-storage-format".

I have an idea how we could avoid deprecating this.
We could make this the default storage/format option, and override this selection per vm disk if desired.
In the WebUI for example we could make this per disk selection in an advanced tab.