@girish Thanks! This ended up being a combination of issues I believe. So throttling on the backups due to using rsync, encryption, and file names ended up being too long (only a few) So I've changed some settings around and it seems to have been resolved. I appreciate the help from both @robi and yourself.

@robi @nebulon Thank you. I will try the recipe I found at Stack Exchange and then report back. In my situation it is for a home server. So I can easily connect a keyboard and monitor to enter the encryption password on the drive in the wake of a server reboot.

I do want to be able to do it remotely though if I'm not home. But the situation is not urgent for me. That explains my delay in following through. But I will.

Instead of spending more time to find a solution for my non responsive nc-instance, I did a restore of my last backup. To add my findings from the last hours, I cloned the backup first. Then I deactivated the encryption app within nc.
The stupid user feedback no longer appears.

For the record. My setting in nc19 was:

Default encryption module enabled Server-side encryption disabled

@girish In my case I was trying to mirror the content of a remote DO object storage to a local Minio instance. I can't recall the exact error but I remember it had to do with the handling of filenames.

@lucidfox rsync + encryption has file path length limitations i.e if your app has a file which has long path (not just the file name, maybe it is some 10 folders deep) the backup will error. The limitations are documented here https://docs.cloudron.io/backups/#encryption .

@Robin opened a feature request here to improve this - https://forum.cloudron.io/topic/3057/consider-improvements-to-the-backup-experience-to-support-long-filenames-directory-names

If someone knows how other tools handle it would be great. I know rclone has similar restrictions as us - https://rclone.org/crypt/#name-encryption

@murgero Yeah, makes sense.