[shayaknyc]

I think I have some clarity on this issue, as it still persists. I decided to try running my backup script inside a docker container running calibre from lscr.io/linuxserver/calibre:latest. The calibre-debug executable hangs at exactly the same place - the metadata.db file. Mine is 15.5mb large, and does have a number of custom columns/fields - would this perhaps be the culprit for why it just hangs at that stage? I can confirm that the Calibre GUI is not running when I execute the backup command inside the container.

Any insights would be very helpful! Thank you!

Edit: confirming that the Calibre Library directory is on an ext4 partition. It consistently fails at the metadata.db file. Wonder if there's a way to run a repair?