My last backup gave me this warning: 2021-03-15 14:42:45 -06 - [Warning-Duplicati.Library.Main.Operation.Backup.UploadSyntheticFilelist-MissingTemporaryFilelist]: Expected there to be a temporary fileset for synthetic filelist (334, duplicati-i15b8eceb833d488e979c69c3bdaf4835.dindex.zip.aes), but none was found?
My question is, what should I do next? Am I missing files? Do I just run another backup? Do I need to do some other action? I’ve seen a handful of posts on this topic, but it wasn’t clear what the end user should do on such a warning.
As for what caused this warning, I have a setup where the remote end prevents file appends or file deletes (using Linux’s chattr +i and also using appropriate Duplicati settings). It works great, except if a backup is interrupted. This time I simply turned back on appending and deletion (chattr -i), re-ran the backup, and got the warning.