Re: Converting INNODB to file-per-table?
Dump the entire DB, drop the DB, restore the DB. On Fri, Feb 11, 2011 at 11:53 AM, Jan Steinman j...@bytesmiths.com wrote: Our incremental backups seem to be filling with instances of ib_logfile1, ib_logfile2, and ibdata1. I know that changing a single byte in a single INNODB table causes these files to be touched. I put innodb_file_per_table in /etc/my.cnf, but apparently, that only causes new databases to be file per table, and it is older databases that are being touched in a minor way daily, causing gigabytes to be backed up needlessly. Some time ago, someone posted a way to convert existing INNODB tables to file per table, but I am unable to find that. Can someone please post that procedure again? (I also welcome any you shouldn't be doing it that way comments, as long as they show a better way... :-) This is for a fairly low-volume server, running on a Mac Mini with two 500GB disks. Thanks! In summary, the idea is to give all of the information to help others to judge the value of your contribution; not just the information that leads to judgement in one particular direction or another. -- Richard P. Feynman Jan Steinman, EcoReality Co-op -- MySQL General Mailing List For list archives: http://lists.mysql.com/mysql To unsubscribe:http://lists.mysql.com/mysql?unsub=joh...@pixelated.net -- - Johnny Withers 601.209.4985 joh...@pixelated.net
RE: Converting INNODB to file-per-table?
I wrote an article in www.stackoverflow.com about how to convert absolutely every InnoDB table to .ibd and permanently shrink the ibdata1 file http://stackoverflow.com/questions/3927690/howto-clean-a-mysql-innodb-storage-engine/4056261#4056261 Enjoy !!! Rolando A. Edwards MySQL DBA (SCMDBA) 155 Avenue of the Americas, Fifth Floor New York, NY 10013 212-625-5307 (Work) 201-660-3221 (Cell) AIM Skype : RolandoLogicWorx redwa...@logicworks.net http://www.linkedin.com/in/rolandoedwards -Original Message- From: Jan Steinman [mailto:j...@bytesmiths.com] Sent: Friday, February 11, 2011 12:53 PM To: mysql@lists.mysql.com Subject: Converting INNODB to file-per-table? Our incremental backups seem to be filling with instances of ib_logfile1, ib_logfile2, and ibdata1. I know that changing a single byte in a single INNODB table causes these files to be touched. I put innodb_file_per_table in /etc/my.cnf, but apparently, that only causes new databases to be file per table, and it is older databases that are being touched in a minor way daily, causing gigabytes to be backed up needlessly. Some time ago, someone posted a way to convert existing INNODB tables to file per table, but I am unable to find that. Can someone please post that procedure again? (I also welcome any you shouldn't be doing it that way comments, as long as they show a better way... :-) This is for a fairly low-volume server, running on a Mac Mini with two 500GB disks. Thanks! In summary, the idea is to give all of the information to help others to judge the value of your contribution; not just the information that leads to judgement in one particular direction or another. -- Richard P. Feynman Jan Steinman, EcoReality Co-op -- MySQL General Mailing List For list archives: http://lists.mysql.com/mysql To unsubscribe:http://lists.mysql.com/mysql?unsub=redwa...@logicworks.net -- MySQL General Mailing List For list archives: http://lists.mysql.com/mysql To unsubscribe:http://lists.mysql.com/mysql?unsub=arch...@jab.org
Re: Converting INNODB to file-per-table?
Thanks, Rolando! It's kind of a scary procedure (dump, drop, reload) that involves significant down-time, but I guess it's necessary. On 11 Feb 11, at 10:24, Rolando Edwards wrote: I wrote an article in www.stackoverflow.com about how to convert absolutely every InnoDB table to .ibd and permanently shrink the ibdata1 file http://stackoverflow.com/questions/3927690/howto-clean-a-mysql-innodb-storage-engine/4056261#4056261 Enjoy !!! Rolando A. Edwards MySQL DBA (SCMDBA) 155 Avenue of the Americas, Fifth Floor New York, NY 10013 212-625-5307 (Work) 201-660-3221 (Cell) AIM Skype : RolandoLogicWorx redwa...@logicworks.net http://www.linkedin.com/in/rolandoedwards -Original Message- From: Jan Steinman [mailto:j...@bytesmiths.com] Sent: Friday, February 11, 2011 12:53 PM To: mysql@lists.mysql.com Subject: Converting INNODB to file-per-table? Our incremental backups seem to be filling with instances of ib_logfile1, ib_logfile2, and ibdata1. I know that changing a single byte in a single INNODB table causes these files to be touched. I put innodb_file_per_table in /etc/my.cnf, but apparently, that only causes new databases to be file per table, and it is older databases that are being touched in a minor way daily, causing gigabytes to be backed up needlessly. Some time ago, someone posted a way to convert existing INNODB tables to file per table, but I am unable to find that. Can someone please post that procedure again? (I also welcome any you shouldn't be doing it that way comments, as long as they show a better way... :-) This is for a fairly low-volume server, running on a Mac Mini with two 500GB disks. Thanks! In summary, the idea is to give all of the information to help others to judge the value of your contribution; not just the information that leads to judgement in one particular direction or another. -- Richard P. Feynman Jan Steinman, EcoReality Co-op -- MySQL General Mailing List For list archives: http://lists.mysql.com/mysql To unsubscribe:http://lists.mysql.com/mysql?unsub=redwa...@logicworks.net You know you have reached perfection of design not when you have nothing more to add, but when you have nothing more to take away. -- Antoine de Saint-Exupery Jan Steinman, EcoReality Co-op -- MySQL General Mailing List For list archives: http://lists.mysql.com/mysql To unsubscribe:http://lists.mysql.com/mysql?unsub=arch...@jab.org
Re: Converting INNODB to file-per-table?
Hi, You can convert the tables themselves semi-online. Just do set global innodb_file_per_table=1; and no a no-operation alter on each table with alter table tablename engine=innodb; Note that the global variable is just a default, the currently connectd threads will use the shared tablespace for table data. You data will be in .ibd files this way, but you can't reclaim space used by ibdata1 unless you dump and reload your database. If you don't do the alter just set innodb_file_per_table on the fly, your new data will be in .ibd files. These are your options, and the best is indeed dump and reload, there is no other way to reclaim space from ibdata1, although, there is a way to convert your tables to use .ibd files. Peter Boros On 02/11/2011 06:49 PM, Jan Steinman wrote: Thanks, Rolando! It's kind of a scary procedure (dump, drop, reload) that involves significant down-time, but I guess it's necessary. On 11 Feb 11, at 10:24, Rolando Edwards wrote: I wrote an article in www.stackoverflow.com about how to convert absolutely every InnoDB table to .ibd and permanently shrink the ibdata1 file http://stackoverflow.com/questions/3927690/howto-clean-a-mysql-innodb-storage-engine/4056261#4056261 Enjoy !!! Rolando A. Edwards MySQL DBA (SCMDBA) 155 Avenue of the Americas, Fifth Floor New York, NY 10013 212-625-5307 (Work) 201-660-3221 (Cell) AIM Skype : RolandoLogicWorx redwa...@logicworks.net http://www.linkedin.com/in/rolandoedwards -Original Message- From: Jan Steinman [mailto:j...@bytesmiths.com] Sent: Friday, February 11, 2011 12:53 PM To: mysql@lists.mysql.com Subject: Converting INNODB to file-per-table? Our incremental backups seem to be filling with instances of ib_logfile1, ib_logfile2, and ibdata1. I know that changing a single byte in a single INNODB table causes these files to be touched. I put innodb_file_per_table in /etc/my.cnf, but apparently, that only causes new databases to be file per table, and it is older databases that are being touched in a minor way daily, causing gigabytes to be backed up needlessly. Some time ago, someone posted a way to convert existing INNODB tables to file per table, but I am unable to find that. Can someone please post that procedure again? (I also welcome any you shouldn't be doing it that way comments, as long as they show a better way... :-) This is for a fairly low-volume server, running on a Mac Mini with two 500GB disks. Thanks! In summary, the idea is to give all of the information to help others to judge the value of your contribution; not just the information that leads to judgement in one particular direction or another. -- Richard P. Feynman Jan Steinman, EcoReality Co-op -- MySQL General Mailing List For list archives: http://lists.mysql.com/mysql To unsubscribe:http://lists.mysql.com/mysql?unsub=redwa...@logicworks.net You know you have reached perfection of design not when you have nothing more to add, but when you have nothing more to take away. -- Antoine de Saint-Exupery Jan Steinman, EcoReality Co-op -- MySQL General Mailing List For list archives: http://lists.mysql.com/mysql To unsubscribe:http://lists.mysql.com/mysql?unsub=arch...@jab.org
