Yesterday I thought I successfully restored and repaired a 5GB database for an existing 1.4TB backup to B2 after the traditional Synology-wiped-all-my-files-on-an-“upgrade” experience. Duplicati seemed happy after the repair, but today my nightly backup is still running several hours after it usually finishes, and progress is at a fraction of a percent, implying that it’s started seeding the backup from scratch again and I’ll be looking at another two weeks of uploading — into a bucket that already has 99% of the files in it.
That said, the upload speed reported on Duplicati’s progress bar (100KBps) appears to be a fraction of my upload bandwidth, and my modem’s graphs suggest that there’s not a whole lot of uploading going on.
What behaviour should I be expecting, and is there any way I can make sense of what Duplicati is up to using its logs?
It’s not obvious to me how to list bucket contents by modification time in B2, so I can’t see whether Duplicati really is re-seeding everything…