casync VS kopia

For arbitrary state changes however, it's better to use something like casync. Note that there are a lot of tunables, implicit and explicit; for package indexing I would particularly think about "how is the index sorted" and "what is the desired chunk size".

If you just want something practical to play with, see casync. Even if it doesn't fit your workflow, or if you think you can do better, chances are you're best off building on top of it or adding patches to it, not starting from scratch.

You probably want casync.

Obligatory link to casync, which implements this better than most alternatives.

(personally, I think more people need to be aware of casync for the update storage/distribution problem. It isn't perfect for every use case, but it's good enough that you're probably better off wrapping/forking it rather than reimplementing it badly from scratch)

Does something like casync (https://github.com/systemd/casync or https://github.com/folbricht/desync) serve any purpose or provide any advantage to propagating rpm changes over rsync?

Software that comes to mind for syncing lots of small files: git (and other source versioning tools), casync (https://github.com/systemd/casync) and a go implementation (https://github.com/folbricht/desync). Not really an answer and I can't think of a way to shoehorn that into your workflow, but maybe it leads you down a useful road.

Casync – A Content-Addressable Data Synchronization Tool\ (15 comments)

I think Kopia would be great for your use case

https://kopia.io/

It has a great system to snapshot files but only store data if it's changed. I use it in an environment where I can't use something like zfs to snapshot data because I don't have the ability to make decisions about what filesystem we're using. It's been amazing, love it so much!

Thanks for the tip on Kopia. Setting it up now, looks perfect.

https://github.com/kopia/kopia

Kopia - GitHub

I've been happy with: https://kopia.io/

Fairly easy to configure, does snapshots to S3 and has a icon in my tray I can watch :)

Btw, kopia is one fine backup tool. Apparently borgbackup is good too.

Kopia is great, though it's worth noting for folks on Linux: non-UTF-8 paths aren't stored correctly [1] and xattrs aren't stored [2]. While most folks probably won't care about the former, the latter can could cause issues (eg. losing SELinux labels makes it difficult to restore a backup of the root filesystem on distros that use SELinux).

[1] https://github.com/kopia/kopia/issues/1764

[2] https://github.com/kopia/kopia/issues/544

I think Kopia [1] is on its way to be that. I am sticking to Restic for now but it seems like the strongest contender.

[1]: https://github.com/kopia/kopia

I used their trial for a bit to test it out with Vorta [1] in a container. Vorta (and Borg) seemed to work fine, until I wanted to restore an archive and I noticed that my recent snapshots were completely empty. Probably because of a misconfiguration on my end though. But it made me look elsewhere. For me backups should be a fire, test and forget solution.

Recently I made the switch to Kopia [2] which seems to have feature parity with Borg (and Restic [3]). It also has a web UI which is way easier to work with than Vorta. And I can easily view, extract and restore individual files or folders from there. This gave me way more confidence about this solution. The only thing I really miss is that I cannot chose different targets for different paths. For instance, with Borg I was able to backup a partial of my Docker appdata to an external source. And I haven't found a way to do this with Kopia. Besides that I'm pretty happy with this solution and I would recommend it.

1. https://vorta.borgbase.com/

2. https://kopia.io/

3. https://restic.net/

There's a few. Off the top of my head

https://github.com/kopia/kopia