Replication after dump

[eli na]

Hi all,

I have a system configured with two databases and replication setup between them. Normally, the system will write to one db and replication insures that the other db is updated. The system will automatically switch to db 2 in the event of failure of db 1. However, when db 1 is up again, I need to smoothly switch to it without shutting down the system. My solution is to:
1) memorize the position of the bin log in db 2
2) dump db 2 data (without locking tables)
3) copy the dump to db 1 and update it
4) start the replication on db 1 by pointing to db 2 bin log position

Note:
* I can't lock all tables while performing the dump because it will hinder access to my system.
* The table engines that i'm using are a mixture of InnoDB and MyISAM.

Is this solution good, and if not your suggestions are welcomed.

Thanks in advance for your help