Re: btrfs send /receive : having problems sending a snapshot back to the original partition

["Miguel Negrão" <miguel.negrao-lists@friendlyvirus.org>]

Em 02-07-2013 13:05, Stefan Behrens escreveu:
> The reason why you are not able to send an incremental snapshot back
> (as you tried it in your previous mail) is that the implementation
> cannot handle it. The receive side gets a parent_uuid (in case of
> incremental transfers using the "-p" option), this parent_uuid is
> matched to the fields received_uuid of the subvolumes in the receive
> filesystem. If no match is found, the receive fails. And that is what
> happens.
>
> If you look at the following script, you can see the expected
> parent_uuid in the line before the "ERROR: could not find parent
> subvolume". And when you look at the output of "btrfs subv list ...
> /mnt/a", you notice that no subvolume at all has the field ruuid
> (which stands for received_uuid) set to any valid value. Therefore it
> doesn't match, therefore it fails.
>
> This logic could be changed, but that's how it is today.

Hi Stefan,

Thank you for the detailed explanation, I guess I understand it better 
now. I guess for the time being I have to use rsync to get the data back 
or transfer the whole subvolume back.

thanks,
-- 
Miguel Negrão
http://www.friendlyvirus.org/miguelnegrao