On my main server, I have a full VM backup performed on Sunday night for a domain and incremental backups the other days of the week.
The incremental backups are taking the same space that the full backups are, which is about 30g. Most of that is actually email.
I recently changed servers and the problem went away for the first week. The Sunday full backup was about 30g, and each incremental backup for the remainder of the week was about 1.5g. This week, it's back to each of the incremental backups being 30g.
I don't think this has anything to do with it but thought I'd mention it. For this client, their backups are stored in /home/client/virtualmin-backup, and "virtualmin-backup" is excluded from the backups. I believe this is working properly or each backup would be 2x as large as the previous days as we store 2 weeks of backups on the server (and send a copy to a S3 bucket).
Do you know why this wouldn't be working?