How to manage the posted attachments in my own talkyard server?

How does the OS file system look? Is there one single partition, or is maybe /opt/ or /var/ on separate partitions?

The attachments, called "uploaded files" or "uploads" in Talkyard, are stored in the file system.

• The ones in use, are at /opt/talkyard/data/uploads/
• Backups of uploads can take lots of space. They are here: /opt/talkyard-backups/archives/*-uploads-up-to-incl-*, you can see the upload backup directories if you do this:
  ls -1d /opt/talkyard-backups/archives/*-uploads-up-to-incl-*

You can check the sizes of the uploads in use, and the backups, like so:

# view upload dir sizes:
du -hs /opt/talkyard/data/uploads/    # the ones in use
du -hs /opt/talkyard-backups/archives/*-uploads-up-to-incl-*   # backups

Here's a nice way to find out more exactly which files are large:

apt install ncdu
ncdu /opt/talkyard/data/uploads/public/

You can click the arrows Up and Down on the keyboard, and Enter, to navigate between the directories. The one at the top with the most ##### is the directory with the largest size.

The directories are numbers from 0 to 9 — and the smallest files are stored in 0, and the larger the file, the larger the directory number. If you want to delete all really large uploads, you could simply delete, say, directories 6, 7, 8, 9. But first you might want to have a look and see what's inside.

Are you sure it's the uploads that use lots of disk space? Can I ask, what types of files do you upload? (maybe large images or videos?)

In any case, what if you copy-paste the output from this:

du -hs /opt/talkyard/data/*
du -hs /var/log/
du -hs /var/log/nginx/*
du -hs /var/log/talkyard/*
du -hs /opt/talkyard-backups/archives/*-uploads-up-to-incl-*
du -hs /opt/talkyard-backups/archives/*-daily-* | tail -n15

You could send it in a private message if you want, or maybe edit the output and remove the hostname from the backup file names (if you want to).

Do you think that after a while, people will have uploaded lots of files again, so that the disk usage is too high again?

Then, if it's not desirable to increase the disk space, maybe it could be helpful if Talkyard could automatically delete uploaded files larger than, say, 10 MB, after two weeks, or something like that. And to exclude such files from backups.
And if there was an info message, if uploading such large files, telling the user that they're "too large" and will get auto deleted after X days to free disk space.

Also, I suppose it'd be helpful with a list of uploaded files, in the Admin Area, where you could sort by file size, and see the original file names, and delete files.