What are the disadvantages of bind mount?

Question

linux

Please explain why and how using bind mount complicates data backup, data migration and data sharing across multiple containers.

Answer 1

increasing the complexity of the directory structure.
plus you are very likely to forget after a while what you screwed to what. and during migration you will have to remember back where you stuck it. for example, the car was moved, but the data was forgotten. and nothing works and everything is urgent. and then the convolutions begin to boil :)
in the backup script, you may have to take into account the data structure. although a good backup should backup data and programs separately.