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There is a database A size of 500GB. Tables in database A contains both MyISAM and INNODB tables. MyISAM tables are master tables and Innodb tables are main transaction tables.

Backup and restore using mysql dump taking quit a long time or days.

  • max_allowed_packet=1G
  • foreign_key_checks=0
  • auto_commit = off
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2 Answers 2

Perhaps you should consider doing parallel mysqldumps of databases or individual tables.

I explained how to do this back on April 17, 2011 : How can I optimize a mysqldump of a large database?

Don't worry about trying to set the options for foreign_key_checks because the header of a standard mysqldump contains directives to set such things :

-- MySQL dump 10.13  Distrib 5.5.23, for Linux (x86_64)
--
-- Host: localhost    Database: zm3_quizzes
-- ------------------------------------------------------
-- Server version   5.5.23-55

/*!40101 SET @OLD_CHARACTER_SET_CLIENT=@@CHARACTER_SET_CLIENT */;
/*!40101 SET @OLD_CHARACTER_SET_RESULTS=@@CHARACTER_SET_RESULTS */;
/*!40101 SET @OLD_COLLATION_CONNECTION=@@COLLATION_CONNECTION */;
/*!40101 SET NAMES utf8 */;
/*!40103 SET @OLD_TIME_ZONE=@@TIME_ZONE */;
/*!40103 SET TIME_ZONE='+00:00' */;
/*!40014 SET @OLD_UNIQUE_CHECKS=@@UNIQUE_CHECKS, UNIQUE_CHECKS=0 */;
/*!40014 SET @OLD_FOREIGN_KEY_CHECKS=@@FOREIGN_KEY_CHECKS, FOREIGN_KEY_CHECKS=0 */;
/*!40101 SET @OLD_SQL_MODE=@@SQL_MODE, SQL_MODE='NO_AUTO_VALUE_ON_ZERO' */;
/*!40111 SET @OLD_SQL_NOTES=@@SQL_NOTES, SQL_NOTES=0 */;

It would be simpler for you to add the following to /etc/my.cnf

[mysqldump]
max_allowed_packet=1G
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But the link also recommends XtraBackup from Percona, which is faster, no locks on tables that are already in use and gains no time for restoration. For 500GB of data I prefer Percona XtraBackup to be quick and efficient unless you want to convert them to innodb_file_per_table model if it wasn't from the existing DB server. Below link explains on how to proceed.

http://www.percona.com/doc/percona-xtrabackup/innobackupex/creating_a_backup_ibk.html

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