Re: [PATCH v4 07/30] qcow2: Document the Extended L2 Entries feature

[Alberto Garcia]

On Fri 10 Apr 2020 11:29:59 AM CEST, Vladimir Sementsov-Ogievskiy wrote:
>> Should we also document that extended L2 entries are incompatible
>> with raw external files? [...] After all, when raw external file is
>> enabled, the entire image is allocated, at which point subclusters
>> don't make much sense.
>
> It still may cache information about zeroed subclusters: gives more
> detailed block-status.

So shall I forbid extended_l2 + data_file_raw then?

I wonder, if the only problem is that it's just not very useful, does it
make sense to add additional complexity and restrictions to the code
simply to prevent the user from making a sub-optimal choice?

Berto