Re: Need help with a backup plan
Posted by:
Rick James
Date: November 06, 2012 11:18PM
100MB? 100GB gets interesting.
mysqldump will prevent INSERTs and UPDATEs during the read to take the dump.
So will SELECT INTO OUTFILE. So, that won't help.
A MERGE table would let you backup only the latest sub-table, thereby shrinking the length of the lock.
If your tables were InnoDB, you could use XtraBackup, getting both a consistent dump (which you don't 'need') and a virtually no-impact dump.
Replication would let you take the Slave offline for backups. But there is some setup to get that going.
Stoping the server, then doing an rsync, might be faster, since most of the stuff does not change.
LVM is also a near-zero impact dump.
Read other threads in this forum; the various methods are discussed frequently.
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