deleted 350 gigabytes through Seafile, then stopped the server and started again ./seaf-gc.sh. the problem persists, almost the entire space is still occupied.
The value “Storage Used” is only the storage used by the current versions of your files in your libraries.
The previous versions are not included.
If you want to get rid of that, you need to a.) delete the history manual or b.) reduce the retention period of your libraries. The default retention period is “unlimited”. So yes, it piles up over time.
PS: You are not the only one to encounter this “problem” and there are plenty similar discussions here in the forum.