Cyrus replication
 

I have been reading this documentation about it and i am not clear about one thing.

I got the feeling that 1st node is master and master only, same as for 2nd node replica only. So in case master fails i'll still have replica but it won't take over the master role it will still be replica. So when i recover master i can not replicate mails from replica to master since this is only one way replication.

Is all this correct?