I recently had to rebuild the database for one of my backups, and since then the backups are taking a lot longer than they should. I’ve looked in to it, and Duplicati seems to be ‘opening’ files even though they haven’t changed in a long time. It’s ‘opening’ 106 of the 551 files in the backup set, even though I ran the backup, and then immediately ran it again without any changes being made to the files being backed up.
If I use the live log viewer with ‘profile’ selected, I see entries like:
Checking file for changes , new: False, timestamp changed: True, size changed: False, metadatachanged: False, 9/4/2020 1:07:47 PM vs 9/4/2020 1:07:47 PM
Assuming that those two timestamps listed at the end are Duplicati’s ‘remembered’ timestamp, and the actual timestamp of the file (they certainly match the latter), you can see that they’re identical. However, it is still considering them different.
I’m running 126.96.36.199_beta_2020-01-18, which I believe is the latest beta.