Hi
while responding on a previous thread, I noticed in the documentation:
https://doc.dovecot.org/configuration_manual/quota_clone_plugin/
"For example you might want to access everybody’s quota via Redis ... but you don’t store the Redis database permanently so it could become empty once in a while. "
It aslo seems that the quota clone plugin propagates only quota changes. Putting both of these points together, you'll going to have missing quotas in redis if it is restarted. It will gradually get populated but only on basis of mailbox changes.
Maybe there should be an initial load of all the quotas when dovecot starts, or could that be a performance issue? Maybe even doveadm quota recalc should propagate or contain an option to propage quotas so that even if it can't be done on dovecot startup, at least it can be done on demand by the administrator.
John