From: Doug Date: February 23 2012 3:36am Subject: restore from replication List-Archive: http://lists.mysql.com/mysql/226844 Message-Id: MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Hello, Currently my master db has about 50G data. There is a replication slave db, it's running with read-only mode. When the master is down for some reasons, I will have to remove the read-only flag in slave mysql and let the applications access to slave with both read and write. When the master is up again, how will I restore those data new updated into slave to master? Thank you. Regards, Doug