Xtrabackup and FTWRL

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The document discusses Xtrabackup and FTWRL (Flush Tables With Read Lock). It describes how Xtrabackup works by taking consistent backups without locking tables for long durations. It also explains how FTWRL is used to get a consistent snapshot of databases during backups and replication. The document notes that while locking has benefits, alternatives like no-lock backups are being explored to avoid issues with DDL statements and non-transactional operations during backups. It concludes by inviting questions from the audience.

Technologie Business

Xtrabackup and FTWRL
Xtrabackup and FTWRL
Percona Live MySQL Conference and Expo 2013
Raghavendra Prabhu
raghavendra.prabhu@percona.com
Percona
24th April, 2013
Raghavendra Prabhu Percona
Xtrabackup FTWRL

Xtrabackup and FTWRL
Outline
Xtrabackup and FTWRL
Raghavendra Prabhu Percona
Xtrabackup FTWRL

Xtrabackup and FTWRL
Xtrabackup
What and Why
How it works
Others based on similar principle
Comparison
Raghavendra Prabhu Percona
Xtrabackup FTWRL

Xtrabackup and FTWRL
Locking
FTWRL
Nice Backronym of ‘Flush Tables with Read Lock’
Duration: How it matters
Necessity
Why with InnoDB
Replication co-ordinates
Avoidable
Galera
Work in progress
wsrep_recover
Where is it used
Backups
PXC/Galera SST
Anywhere you may want to
Raghavendra Prabhu Percona
Xtrabackup FTWRL

Xtrabackup and FTWRL
Not Locking
no-lock: “In a world without doors, why you need locks”
Beneﬁts
Caveats
DDL
Non-transactional FRMs
Redo-logging of ibd creation
Only InnoDB
Possible solutions
MDL locking
Consistent snapshots with Galera
Bitmap based backups
Transactional DDL in future?
Raghavendra Prabhu Percona
Xtrabackup FTWRL

Xtrabackup and FTWRL
Conclusion
Any questions
Raghavendra Prabhu Percona
Xtrabackup FTWRL

Xtrabackup and FTWRL
Me
Raghavendra Prabhu
http://wnohang.net/about
Software Engineer at Percona and Product Lead of PXC
https://launchpad.net/percona-xtradb-cluster
Slides downloadable at http://goo.gl/jsult
Raghavendra Prabhu Percona
Xtrabackup FTWRL

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Xtrabackup and FTWRL

1. Xtrabackup and FTWRL Xtrabackup and FTWRL Percona Live MySQL Conference and Expo 2013 Raghavendra Prabhu raghavendra.prabhu@percona.com Percona 24th April, 2013 Raghavendra Prabhu Percona Xtrabackup FTWRL

2. Xtrabackup and FTWRL Outline Xtrabackup and FTWRL Raghavendra Prabhu Percona Xtrabackup FTWRL

3. Xtrabackup and FTWRL Xtrabackup What and Why How it works Others based on similar principle Comparison Raghavendra Prabhu Percona Xtrabackup FTWRL

4. Xtrabackup and FTWRL Locking FTWRL Nice Backronym of ‘Flush Tables with Read Lock’ Duration: How it matters Necessity Why with InnoDB Replication co-ordinates Avoidable Galera Work in progress wsrep_recover Where is it used Backups PXC/Galera SST Anywhere you may want to Raghavendra Prabhu Percona Xtrabackup FTWRL

5. Xtrabackup and FTWRL Not Locking no-lock: “In a world without doors, why you need locks” Beneﬁts Caveats DDL Non-transactional FRMs Redo-logging of ibd creation Only InnoDB Possible solutions MDL locking Consistent snapshots with Galera Bitmap based backups Transactional DDL in future? Raghavendra Prabhu Percona Xtrabackup FTWRL

6. Xtrabackup and FTWRL Conclusion Any questions Raghavendra Prabhu Percona Xtrabackup FTWRL

7. Xtrabackup and FTWRL Me Raghavendra Prabhu http://wnohang.net/about Software Engineer at Percona and Product Lead of PXC https://launchpad.net/percona-xtradb-cluster Slides downloadable at http://goo.gl/jsult Raghavendra Prabhu Percona Xtrabackup FTWRL

Xtrabackup and FTWRL

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Xtrabackup and FTWRL