Carbon Copy Cloner users recently noticed a warning that ONE file, /private/var/db/fpsd/dvp, isn’t being backed up. Here’s why. (tl;dr. It’s not a problem.) This Apple discussion explains the situation for this user:
Carbon Copy Cloner gives me an error when I finish backing up, saying I can’t copy this file to my backup drive because it didn’t have permissions. What is it, and is it safe to use the backup without this file? When I go to the file in Finder, the folder it’s in doesn’t give me access.
Check It Out: macOS: What is /private/var/db/fpsd/dvp and Why Doesn’t it Get Backed Up?
TL;DR: this «super secret» directory is part of Apple’s FairPlay DRM/copy protection scheme, and you’re not supposed to tamper with it.
fpsd seems to be a demon that is part of Apple’s CoreFP subsystem, which apparently implements Apple’s FairPlay Digital Rights Management (DRM), which I believe is used for iTunes video (both streaming and downloads) and Apple Music (both streaming and downloads, presumably.)
*daemon
This doesn’t explain it at all or answer the question!
Could you please answer the question? What is it? Why doesn’t it get backed up?
Thanks. Suggestion: to include also a brief summary in your articles pointing to other external ones.