Catalina messed with my Books

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Revision as of 18:45, 1 January 2021 by Heiko (talk | contribs) (What I did to solve the problem)
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About

Catalina is very reliable and easy to use OS - having that said, Books, Music and TV Apps keep driving me crazy.

This time Books.app stopped syncing. Of course with out any recognizable problem. No alerts displayed in any way. And Apple does not make it easy to solve puzzles like this. The whole iCloud Books syncing is a darn black box.

What I did to find the problem

  • Made sure my iOS-devices were syncing OK
  • Made sure my Mac was signed in to iCloud
  • Performed some rituals…
  • Took a look at ~/Library/Mobile Documents/
  • Found two suspiciously looking folders…
    BooksSyncFail01.png

What I did to solve the problem

  • I trashed one of them…
    BooksSyncFail02.png
    …and then mac OS started syncing:
    BooksSyncFail03.png
  • And then it got weirder…
    • Suddenly my Mac thought I was using too much iCloud space:
      BooksSyncFail04.png
      Which was weird, because mac Mac and iOS Devices were telling me I had > 1GB left!
      BooksSyncFail05.png
    • Now what? Is my iCloud storage full or not?
    • Finder seems to think it's full too (and that's space left):
      BooksSyncFail06.png
    • Awesome work, Apple!
  • I then started to delete PDFs from Books.app, in order to free space…
  • …after a while I noticed that Books.app was re-downloading them…
  • …so I deleted them once more! (Hint: Use your iOS-Device for deleting, it's mich more convenient!)
  • Now it didn't re-download the PDFs.

Conclusion

My guess is, that at some point Books.app couldn't upload files to iCloud - maybe because it would need more space that it had available (unclear). Then it stopped syncing and started queuing. So deleting files (and deleting them again) brought Books.app to the latest version Library where syncing worked again.