Code review comment for lp:~stub/charms/precise/postgresql/docs

Ta.

The fundamental problem remains the same no matter how we store passwords or keep them stable unfortunately. If we bring up a new service from backup, we need to publish passwords to client units. Thus the backup needs to include the passwords in plaintext, or we need to regenerate the passwords.

We might be able to get stable usernames though, which is the biggest problem, if we stop using the relationship id when generating them and instead use the database service name and client service name. Then, if we bring up a system using the same service names related in the same ways, then the usernames would be identical to the old system and match what is stored in the recovered database.