Background on Backup Locks I was very excited to see Backup locks support in release notes for the latest Percona XtraDB Cluster 5.6.21 release. For those who are not aware, backup locks offer an alternative to FLUSH TABLES WITH READ LOCK (FTWRL) in Xtrabackup. While Xtrabackup can hot-copy Innodb, everything else in MySQL must be locked (usually [&]

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http://www.percona.com/blog/2014/12/22/testing-backup-locks-during-xtrabackup-sst-on-percona-xtradb-cluster/