Quota calculation with MySQL backend and replication.

[Reio Remma]

Hello!

Over the weekend I converted our Dovecot server from Maildir quota to 
MySQL backed quota and then provisioned a fresh replica server and 
seeded it via Dovecot replication.

This morning most mailboxes were over quota, reporting twice the actual 
usage. I'm fairly certain it's the effect of having sql backed quota 
with both Dovecot servers using the same database.

Can anyone tell me if this is a one-off problem stemming from 
replicating the 2nd server from scratch or should I be aware of other 
quirks concerning sql backed quota and replication?

Thanks a bunch!
Reio