Why is it important to perform a prepare on a backup that was created by XtraBackup?

Why is it important to perform a prepare on a backup that was created by XtraBackup?

The xtrabackup –prepare step makes the files perfectly consistent at a single instant in time, so you can run InnoDB on them. The modifications are necessary to disable InnoDB’s standard safety checks, such as complaining that the log file isn’t the right size, which aren’t appropriate for working with backups.

What is the difference between XtraBackup and Innobackupex?

Although innobackupex is derived from the same GPL and open-source wrapper script that InnoDB Hot Backup uses, it does not execute ibbackup , and the xtrabackup binary does not execute or link to ibbackup . You can use Percona XtraBackup without any license; it is completely separate from InnoDB Hot Backup.

How does percona XtraBackup work?

XtraBackup works by remembering the log sequence number (LSN) when it starts, and then copying away the data files. During this step, XtraBackup performs crash recovery against the copied data files, using the copied transaction log file. After this is done, the database is ready to restore and use.

How do I use XtraBackup?

1. Step 1 – Install Percona XtraBackup. The first step is to install latest Percona XtraBackup software on our Ubuntu server.
2. Step 2 – Configure User and Backup Directory.
3. Step 3 – Perform Backup with Innobackupex.
4. Step 4 – Restore Full Backup with Innobackupex.
5. 4 Comment(s)

How do I restore using XtraBackup?

The xtrabackup binary does not have any functionality for restoring a backup. That is up to the user to do. You might use rsync or cp to restore the files. You should check that the restored files have the correct ownership and permissions.

How do I use XtraBackup in MySQL?

Back Up MySQL with Percona Xtrabackup

1. Prerequisites. For this tutorial, you will need the following items:
2. Install MariaDB.
3. Install Percona XtraBackup.
4. Configure MariaDB.
5. Perform Full Backup with Innobackupex.
6. Incremental Backups with Innobackupex.
7. Restore Full Backup with Innobackupex.

Is percona XtraBackup free?

Percona XtraBackup is a free, online, open source, complete database backups solution for all versions of Percona Server for MySQL and MySQL®.

How do I restore XtraBackup in mysql?

1. To use the move that comes with xtrabackup, the copy command must clear the /var/lib/mysql directory, otherwise an error will be reported.
2. Close mysql-server, and change chown -R mysql.mysql /var/lib/mysql.
3. Restart systemctl start mysql restore is complete.

What is hot backup in MySQL?

Hot Backups The mysqlbackup command, part of the MySQL Enterprise Backup component, lets you back up a running MySQL instance, including InnoDB tables, with minimal disruption to operations while producing a consistent snapshot of the database.

What is percona used for?

Percona Server for MySQL is an open source relational database management system (RDBMS). It is a free, fully compatible drop in replacement for Oracle MySQL. The software includes a number of scalability, availability, security and backup features only available in MySQL’s commercial Enterprise edition.

What is hot backup?

Hot backup is a configuration where one machine is in a standby mode, ready to take over the load from a failing system.