So I recently realized I didn’t trust google to never lose my stuff. LoL.
Google offers an easy way to download your stuff, called “Takeout”.
I followed that procedure and then downloaded the resulting 44GB zip file.
I stuck that zip in my Documents folder on my home PC, and Duplicacy happily backed it up to B2 for me.
BUT… This seems like an unsustainable method. Every time I download a new zip, I’m going to be adding 44+ GB to my B2 backup!
I’m thinking maybe the right answer is to unzip the downloaded takeout and to put that resulting normal older tree in “my documents” instead. Then with every backup, I just replace that folder. Will duplicacy see that the vast majority of the files in the unzipped takeout folder are unchanged, and thus not duplicate them?
I guess my question is, how does duplicacy determine a file is changed? Please point me to a description of how duplicate files are recognized and handled?