Re: [Duplicity-talk] Use alternative diff backend

[edgar . soldin]

On 7/28/2018 19:53, darkdragon via Duplicity-talk wrote:
> Next generation file systems like ZFS and BtrFs allow storing snapshots with 
> no additional costs. Calculating diffs is also extremely cheap. 

can you give a command line or native python example to retrieve a diff by file?
 
> Is it possible to use duplicity with an alternative diff backend?

generally, of course. but as the project is currently driven by portable 
compatibility but your suggestion is limited to two specific source file 
systems, i don't see it in the realm of duplicity as it is used today.
 
> Instead of maintaining a file signature cache or downloading these 
> informations, one could use create a snapshot use easily get this information 
> from these file systems. 

how? a snapshot is merrily fixed state in time. how would you retrieve only 
changes (diffs) from that?

also, at least btrfs already has the functionality to send changes to another 
remote btrfs filesystem eg. over ssh . so why reinvent the wheel?

>The rest (create tar, sign, transfer and even restore) would be the same.

..ede/duply.net