Logs, progress and output on long S3 snapshot creation

I’m a fresh user and it’s my first post, Hello everyone!

I work on huge amount of data (~15TB) and I want to manage my backups with bash script triggered by cron. The destination is S3. Such an operation takes around 35-40 hours.

I would like to have some meaningful output or logs written to file DURING the operation, so that I could check the file periodically and see the progress (or notice something got stuck). I’m not sure how to do it with Kopia.

By default I only see the default single-line output and a summary written only after operation finishes.
I tried to look for similar topics in the forum. I can see there was an option --no-progress, but it’s not visible in recent docs, so maybe it was removed? (also, I’m not sure it was an actual answer to my need).
I also tried to look into logs, but they seem to be really low-level.

I was wondering if there is any way to have some reasonable status periodically printed to file (e.g hh:mm N hashed (X TB), 0 cached (0 B), uploaded Y TB)
Is there something I’m missing? Do you have some idea how could I approach my issue?

As reference, I had similar issue with other popular tool: restic. There is an env variable RESTIC_PROGRESS_FPS, where one can choose to have a progress printed every e.g. 5 minutes.

Thank you in advance!

Take a look at --progress and see if that works

Frankly, I don’t see exact difference in behaviour, when using --progress and not.
Is this option still valid in latest Kopia version? (it’s not in the doc)