Re: [PATCH] copy: prefer reflinks for file copies

[Junio C Hamano <gitster@pobox.com>]

"Vlad Petric via GitGitGadget" <gitgitgadget@gmail.com> writes:

> For local clones, try a reflink before the existing hardlink path. The
> resulting order is therefore:
>
>   - reflink;
>   - hardlink, unless --no-hardlinks was requested;
>   - byte-for-byte copy.

If copy-on-write works in situations where hard links are not
available, using it as a fallback might make sense.  However,
we are talking about object files that are immutable.  You have
no reason to update them to trigger copy-on-write at all.  The
only changes you would make in the destination directories in
the new repository's '.git/objects/' are removal or creation,
never modification.  Therefore, I do not understand why anyone
would want to use the above order.  Could you elaborate?

Thanks.