LVM snapshots is one powerful way of taking a consistent backup of your MySQL databases – but did you know that you can now restore directly from a snapshot (and binary logs for point in time recovery) in case of that ‘Oops’ moment? Let me show you quickly how. This howto assumes that you already [...]
Connecting orphaned .ibd files
May 13, 2011 By 19 Comments
There are two ways InnoDB can organize tablespaces. First is when all data, indexes and system buffers are stored in a single tablespace. This is typicaly one or several ibdata files. A well known innodb_file_per_table option brings the second one. Tables and system areas are split into different files. Usually system tablespace is located in [...]
Percona Server 5.1.47-rel11.0
June 21, 2010 By 13 Comments
Dear Community, Percona Server version 5.1.47-rel11.0 is available for download now. The changes in this release include: New features Percona Server is now based on MySQL 5.1.47, and XtraDB is now based on InnoDB plugin 1.0.8. XtraDB now uses the fast recovery code released in InnoDB Plugin version 1.0.8, instead of Percona’s earlier fast-recovery code. [...]
MongoDB Approach to Availability
April 30, 2010 By 2 Comments
Another thing I find interesting about MongoDB is its approach to Durability, Data Consistency and Availability. It is very relaxed and will not work for some applications but for others it can be usable in current form. Let me explain some concepts and compare it to technologies in MySQL space. First I think MongoDB is [...]
XtraDB storage engine release 1.0.6-9
January 13, 2010 By 9 Comments
Dear Community, As of today Release 9 of XtraDB storage engine is available. The release includes following new features: The release is base on 1.0.6 version of InnoDB plugin. MySQL 5.1.42 as a base release Separate purge thread and LRU dump is implemented (this feature was actually added in Release 8, but somehow it was [...]
XtraDB storage engine release 1.0.3-7
August 17, 2009 By 6 Comments
Dear Community, Today we are announcing XtraDB release 7. This is the last release based on InnoDB plugin version 1.0.3, as you might know Innobase has released 1.0.4. The release includes following new features: MySQL 5.1.37 as a base release speed hack for buf_flush_insert_sorted_into_flush_list controlled by the new variable innodb_fast_recovery Fixed bugs: MySQL Bugs: #45357: [...]
5.0.84-build18 Percona binaries
August 11, 2009 By 4 Comments
Dear Community, The 18-th build of MySQL server with Percona patches is available now. Comparing to the previous release it has following new features: The build is based on MySQL-5.0.84 Fixed the issue with CLIENT_STATISTICS New patch innodb_recovery_patches.patch greatly improves recovery time Fixed bugs in the build: Bug #407117 in Percona patches: “any mysql-test fails [...]
XtraDB storage engine release 1.0.3-6
July 20, 2009 By 6 Comments
Dear community, Today we are pleased to announce release 6 of XtraDB – the result of 2 months hard work. The release includes following new features: MySQL 5.1.36 as a base release New patch
1 | innodb_recovery_patches.patch |
Experimental adaptive checkpoint method estimate innodb_stats – the implementation of the fix forMySQL Bug#30423 expand-import Support of import InnoDB / [...]
xtrabackup-0.6
April 29, 2009 By 6 Comments
We announce next beta version of our xtrabackup tool. Changelist includes: – set innodb_fast_shutdown=1 on xtrabackup shutdown – set innodb_write_io_threads=10 by default for fast buffer_pool flushing during recovery – build xtrabackup with –with-extra-charsets=complex Bug #357653: innobackupex-1.5.1 –copy-back fails Bug #358194: 2nd-phase is very slow Bug #358266: xtrabackup-0.5 dies with SEGV on bad command line arguments [...]
When would you use SAN with MySQL ?
March 9, 2009 By 18 Comments
One question which comes up very often is when one should use SAN with MySQL, which is especially popular among people got used to Oracle or other Enterprise database systems which are quite commonly deployed on SAN. My question in such case is always what exactly are you trying to get by using SAN ?
