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Displaying posts with tag: Xtrabackup (reset)
MySQL Backup Service from Percona

The Percona Backup Service managed service launched today. It ensures properly configured backups run successfully as scheduled on customer provided backup storage – whether on premise, in the cloud, or a hybrid. Backup issues or production data recovery are efficiently handled by Percona Managed Services technicians with deep knowledge of MySQL.

As we state in our white papers, “MySQL backup and recovery are a foundational piece of any infrastructure. A well-tested backup and recovery system can be the difference between a minor outage and the end of a business.” While MySQL backups are “foundational,” they …

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Another reason for Xtrabackup error “log block numbers mismatch”

I ran into an issue the other day where Xtrabackup was not completing and threw the following error:

xtrabackup: error: log block numbers mismatch:
xtrabackup: error: expected log block no. 134860907,
but got no. 176803931 from the log file.
xtrabackup: Error: xtrabackup_copy_logfile() failed.

When researching this error, I found that this error is generally caused when the following 2 conditions must are met, and this is generally when “xtrabackup cannot catch up with log writing activity on the server, so the log wraps around before xtrabackup can copy records before they are overwritten”:

  1. The log block numbers must wrap around, which only happens once per 1 GB of log writes.
  2. The wrap-around point must be between the last checkpoint and the current log tail at the time the backup starts.

Discussed here:

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Introducing Trite: A tool for automating import of InnoDB tablespaces


Mysqldump is a fantastic tool for backing up and restoring small and medium sized MySQL tables and databases quickly. However, when databases surge into the multi-terabyte range restoring from logical backups is inefficient. It can take a significant amount of time to insert a hundred million plus rows to a single table, even with very fast I/O. Programs like MySQL Enterprise Backup and Percona XtraBackup allow non-blocking binary copies of your InnoDB tables to be taken while it is online and processing requests. XtraBackup also has an export feature that allows InnoDB file per tablespaces to be detached from the shared table space and imported to a completely different MySQL instance.

The necessary steps to export and import InnoDB tables are in the XtraBackup documentation  …

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ClusterControl for Percona XtraDB Cluster Improves Management and Monitoring

ClusterControl for Percona XtraDB Cluster is now available in three different versions thanks to our partnership with Severalnines. ClusterControl will make it simpler to manage and monitor Percona XtraDB Cluster, MySQL Cluster, MySQL Replication, or MySQL Galera.

I am very excited about our GA release of Percona XtraDB Cluster 5.6 last week. As Vadim described in his blog post announcing the release, we have brought together the benefits of Percona Server 5.6, Percona XtraBackup and Galera 3 to create a drop-in compatible, open source, state-of-the-art high availability MySQL clustering solution. We could not have done it without the close cooperation and help of our partners at Codership. To learn more, join us on February …

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XtraBackup Complains of Missing perl-DBD-MySQL

I was busy testing a PXC cluster today when suddenly was buffled with a confusing error:

140108 23:33:39 innobackupex: Connecting to MySQL server with DSN 'dbi:mysql:;mysql_read_default_group=xtrabackup' (using password: NO).
innobackupex: Error: Failed to connect to MySQL server as DBD::mysql module is not installed at /usr/bin/innobackupex line 2913.

OK, so my first though was DBD::mysql is missing, but as I checked:

[root@pxc03 keepalived]# yum list installed| grep perl-DBD-MySQL
perl-DBD-MySQL.x86_64 4.013-3.el6 @base

After some digging, it’s not actually the module that is missing – it was one of the module’s dependency which is the mysql client library.

[root@pxc03 keepalived]# yum deplist perl-DBD-MySQL.x86_64|grep mysql
dependency: libmysqlclient.so.16()(64bit)
provider: mysql-libs.x86_64 5.1.71-1.el6
dependency: libmysqlclient.so.16(libmysqlclient_16)(64bit)
provider: mysql-libs.x86_64 5.1.71-1.el6 …
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Daily backup OpenStack single MySQL with Percona innobackupex including the /etc directory

this is a short script for daily backup of the OpenStack MySQL and the /etc direcotry of the control node

[root@dev-epg-rhos-01 BACKUP]# cat /root/bin/epg.innobackupex.openstack.sh
#!/bin/sh
# done for epgmad4@tid.es
# Barcelona Thu Oct 17 16:30:36 CEST 2013

days_to_keep=7
NFS=/BACKUP
exportDate=`date +%Y-%m-%d.%H.%M.%S`
export_DIR=${NFS}/${HOSTNAME}.${exportDate}
test ! -d "${export_DIR}" && echo "$(date) : creating ${export_DIR}" && mkdir -p "${export_DIR}"
export_MySQL_DIR=${export_DIR}/mysql.bckp
export_ETC_DIR=${export_DIR}/etc.bckp
rsync -avh /etc ${export_ETC_DIR}
echo "=========================================================================================================" >> ${export_DIR}/README.restore.with.innobackupex
echo "HOW to restore this FULL mysql backup" >> ${export_DIR}/README.restore.with.innobackupex
echo "=========================================================================================================" …
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Percona XtraBackup 2.1.4 is now available

Percona is glad to announce the release of Percona XtraBackup 2.1.4 on August 9th, 2013. Downloads are available from our download site here and Percona Software Repositories.

This release is the current GA (Generally Available) stable release in the 2.1 series. Percona XtraBackup is an open source, free MySQL hot backup software that performs non-blocking backups for InnoDB and XtraDB databases.

New Features:

  • Percona XtraBackup has introduced …
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2 new features added to Percona XtraDB Cluster (PXC) since 5.5.31

With the last Percona XtraDB Cluster (PXC) release, two major features were added:

* a new command to bootstrap the cluster was added to the init script
* SST via Xtrabackup now supports Xtrabackup 2.1 features

In this post, I want to explain the benefits of these added features and how to use them.

If you follow the mysqlperformanceblog regularly, you’ve already noticed that there are several ways to start a node and that it’s not always easy to start the node that is supposed to bootstrap the entire cluster.

See :
- …

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Percona XtraDB Cluster (PXC) in the real world: Share your use cases!

The aim of this post is to enumerate real-world usage of Percona XtraDB Cluster (PXC), and also to solicit use cases from the readers. One of the prominent usages in the production environment that we have come across (and our Percona consultants have assisted) is that of HP Cloud. There is a post about it here by Patrick Galbraith of HP. The post focuses on their deployment of PXC for HP Cloud DNS. The post focuses on the key aspects of synchronous replication setup with high-availability guarantees like split-brain immunity.

Nobody likes to debug async replication while its broken or …

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xtrabackup_51: not found & no ‘mysqld’ group in MySQL options

Recently I happen to setup a new MySQL instance with my tools – a standard MySQL 5.1+, xtrabackup setup and last-hotbackup.tar.gz. To restore from the backup we used xtrabackup binaries and ran into issues following standard commands (assuming no changes): To prepare the backup I used apply-log as follows: $] innobackupex-1.5.1 --defaults-file=/usr/local/mysql/data/backup-my.cnf --apply-log  /usr/local/mysql/data --ibbackup […]

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