Recommendation for Backup to Proton cloud

Support Software & Applications
1

Until now, I have been using restic/rclone to create a backup in the Proton Cloud. Unfortunately, due to changes in the Proton API, it no longer works, and there is no maintainer for the interface in rclone.
Therefore, I am looking for a suitable replacement.

These are the solutions I have shortlisted so far:
Borg update - no multithreading
Kopia - AUR
Duplicacy - AUR/non-free licence

I tend to use Borg because it is included in the official repositories.
Are there any experiences or recommendations regarding these three apps?

2

Are you referring to Proton AG and the Proton Drive?

→ Proton Drive · GitHub

There is also something called pCloud - another Swiss company?

3

Yes, its the Proton AG.
Unfortunately, support for Linux is somewhat neglected, every operating system has a drive app except Linux.

With the help from my buddy gemini, i tried to setup Kopia - rclone - proton-drive-bridge (a community project).
The chain itself works (files are created in the cloud).
Unfortunately, kopia still cannot create a repository. This seems to be a known issue between kopia and rclone, which has actually have been fixed.
According to gemini, rclone is necessary because kopia only supports sftp and proton-drive-bridge only provides an ftp interface.
But I will check this by myself.

4

Update (might be helpful for other Proton Drive users)
Since the solution described above doesn’t work for me, I’ve now opted for a less elegant approach:

kopia (AUR kopia) creates the backup/repository in a local directory.
proton-drive-sync (AUR proton-drive-sync-bin) synchronizes this directory with Proton Drive.

Since I only back up the important files in my home directory, the kopia repository is only about 15 GB in size, which isn’t really a big deal.

Not pretty, but it works.

1 Like
5

I have been fiddling with a Proton drive client from scratch but struggled to find documentation

All I have been able to find at Proton is proton-mail-bridge.

What I have found is that the proton-drive API expects some sort of whitelisted app-versions - which is one of the reasons rclone does not work.

7

yes, the rclone interface was reversed engineered and the maintainer quit.

right now there are two community solutions for proton drive on linux.

I don’t know if proton-mail-bridge can be missused to write to proton drive, but actually there is no official linux app to sync to proton drive.