Accidentally executed reset master on the live server Turns out I have called RESET MASTER; accidentally on the live server. The slaves stopped replication now because they can not find the expected bin log files on the master. Is there a way to continue replication without data corruption and without reimporting the whole dump on the slave?

Is it save to call CHANGE MASTER TO... with 'mysql-bin.000001' and position 1 on the slave now, because that is where they should continue, or do I risk data corruption in that case and it is generally preferred to reimport the whole dump and start over?
Considering all the slaves were in-sync with master while you issued reset-master, it is safe to issue change master to on slaves with newly generated first bin-log.