Recovery

Since version 2.1.0 the FromDual Recovery Manager (rman) for MariaDB and MySQL has also a progress indicator for the restore of logical backups made with mysqldump. This feature was implemented because of the numerous requests of FromDual rman users who were not happy with the default mysql behavior.

You can check your current rman version as follows:

# ./bin/rman --version
2.2.1

As with all FromDual tools you get a command overview with examples with the --help option:

FromDual has the pleasure to announce the release of the new version 2.2.1 of its popular Backup and Recovery Manager for MariaDB and MySQL (brman).

FromDual has the pleasure to announce the release of the new version 2.2.0 of its popular Backup and Recovery Manager for MariaDB and MySQL (brman).

It is Saturday night at 23:19. Time to go to bed after a hard migration day. Just a last clean-up query before finishing: Tap tap tap. Enter! - Oops!

SQL> UPDATE prospect_lists_prospects SET prospect_list_id = '73ae6cca-7b34-c4a3-5500-5d0e2674dbb6';
Query OK, 4686 rows affected (0.21 sec)
Rows matched: 5666  Changed: 4686  Warnings: 0

A verification query to make sure I am in the mess:

FromDual has the pleasure to announce the release of the new version 2.1.0 of its popular Backup and Recovery Manager for MariaDB and MySQL (brman).

A while ago we released our FromDual Backup and Recovery Manager (brman) 2.0.0 for MariaDB and MySQL. So what are the new cool features of this new release?

First of all brman 2.0.0 is compatible with MariaDB 10.3 and MySQL 8.0:

FromDual has the pleasure to announce the release of the new version 2.0.0 of its popular Backup and Recovery Manager for MariaDB and MySQL (brman).

FromDual has the pleasure to announce the release of the new version 1.2.5 of the popular Backup and Recovery Manager for MySQL and MariaDB (fromdual_brman).

You can download the FromDual Backup and Recovery Manager from here.

FromDual has the pleasure to announce the release of the new version 1.2.4 of the popular Backup and Recovery Manager for MySQL and MariaDB (fromdual_brman).

You can download the FromDual Backup and Recovery Manager from here.

FromDual has the pleasure to announce the release of the new version 1.2.3 of the popular Backup and Recovery Manager for MySQL and MariaDB (fromdual_brman).

You can download the FromDual Backup and Recovery Manager from here.

Das DOAG Regionaltreffen Freiburg/Südbaden vom 26. Januar 2016 zum Thema MySQL hat im gewohnten Rahmen statt gefunden.

FromDual has the pleasure to announce the release of the new version 1.2.2 of the popular Backup and Recovery Manager for MySQL and MariaDB (fromdual_bman).

You can download the FromDual Backup and Recovery Manager from here.

Sometimes we face the situation where we have a full MySQL database backup done with mysqldump and then we have to restore and recover just one single table out of our huge mysqldump file.
Further our mysqldump backup was taken hours ago so we want to recover all the changes on that table since our backup was taken up to the end.

In this blog article we cover all the steps needed to achieve this goal for MySQL and MariaDB.

FromDual has the pleasure to announce the release of the new version 1.2.1 of the popular Backup and Recovery Manager for MySQL and MariaDB (fromdual_bman).

You can download the FromDual Backup and Recovery Manager from here.

Precaution: Before you try this out on your production system do a BACKUP first! FromDual Backup Manager can help you with this.

Situation

A MySQL user has delete its InnoDB table files for example like this:

shell> rm -f $datadir/test/test.*

Analysis

We do some analysis first:

Contents

• About
• Where to download brman
• What brman users say about
• FromDual Backup Manager (bman)
  • Where can bman help you
  • bman example
  • Backup types
  • Backup modes

Some MySQL customers do not want to use the root user for mysqldump backups. For this user you have to grant the following minimal MySQL privileges:

mysqldump --single-transaction (InnoDB)

CREATE USER 'backup'@'localhost' IDENTIFIED BY 'secret';
GRANT SELECT, SHOW VIEW, RELOAD, REPLICATION CLIENT, EVENT, TRIGGER ON *.* TO 'backup'@'localhost';

mysqldump --lock-all-tables (MyISAM)

GRANT LOCK TABLES ON *.* TO 'backup'@'localhost';

If we missed a privilege please let us know.

Recently I found in a forum the following request for help:

Abstract: In this article we have a look at the compression options of common zipping tools and its impact on the size of the compressed files and the compression time. Further we look at the new parallel zip tools which make use of several cores.

InnoDB is known to have crash-recovery capabilities and thus is called a crash safe storage engine (in contrary to MyISAM). Never the less under certain circumstances it seems like InnoDB pages can get corrupt during a crash and then a manual crash-recovery is needed.