Since about a week ago my two Mail-in-a-Boxes on Linode servers have started doing daily full-duplicity backups instead of monthly ones (with intermediate incremental backups). I then upgraded from v67 to v69b on both, hoping that it might help but the problem is still there. It makes the VPS disks fill up very fast and daily I have to manually delete the previous backups.
Has anyone else seen this or is it just me? Any ideas how I can fix it?
Thanks in advance!
Might have to do with Duplicity 3.0.1 having a bug. Try to see if upgrading duplicity to 3.0.2 helps you out.
I am running 3.0.2 and have this problem
duplicity is already the newest version (3.0.2-ppa202408091359~ubuntu22.04.1).
Just to be sure, could you check again tomorrow? Release 3.0.2 was only just released, so tonight might be the first time it is used for the backup.
If tomorrow another full backup is added, it’s probably a different issue.
The solution does seem to be to upgrade to duplicity 3.0.2.
Yesterday I upgraded one of two M-in-a-Bs from 3.0.1 to 3.0.2 with:
sudo apt-get update
sudo apt-get --only-upgrade install duplicity
Today I see that this M-in-a-B did an incremental backup last night.
The M-in-a-B not upgraded did a second full backup to add to one already there from the previous night.
You’re right, it did an incremental backup last night. 
Good to hear, otherwise there would be more work 
You may look into running sudo apt-mark hold duplicity to prevent it from upgrading automatically, in case there is another regression ever again.
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