On Mon, Feb 01, 2021 at 11:51:06PM +0100, Christoph Anton Mitterer wrote:

On Mon, 2021-02-01 at 10:46 +0000, Hugo Mills wrote:

quoted

   It'll fail *obviously*. I'm not sure how graceful it is. :)

Okay that doesn't sound like it was very trustworthy... :-/

Especially this from the manpage:
       You must not specify clone sources unless you guarantee that these
       snapshots are exactly in the same state on both sides—both for the
       sender and the receiver.

I mean what should the user ever be able to guarantee... respectively
what's meant with above?

If the tools or any option combination thereof would allow one to
create corrupted send/received shapthots, then there's not much a user
can do.
If this sentence just means that the user mustn't have manually hacked
some UUIDs or so... well then I guess that's anyway clear and the
sentence is just confusing.

   It means that (a) the snapshots should exist, and (b) you shouldn't
use the tools to make any of them read-write, make modifications, and
make them read-only again. (and (c), as you say, don't modify the
UUIDs).

   Hugo.

quoted

but I guess it's not a priority for the devs

Since it seems to be a valuable feature with probably little chances to
get it working in the foreseeable future, I've added it as a feature
request to the long term records ;-)
https://bugzilla.kernel.org/show_bug.cgi?id=211521



Cheers,
Chris.

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