… the InnoDB main table space – ibdata1 – and redo logs – ib_logfile*. MySQL keeps InnoDB files open all the time. The following recovery technique… monitoring system checks that InnoDB files ibdata and ib_logfile* do exist Do not restart MySQL until the further recovery strategy is clear
Post: Adjusting Innodb for Memory resident workload
March 25, 2009 By 11 Comments
… or most of their database (frequently Innodb) fits into memory. If all tables fit in Innodb buffer pool the performance for reads… preload all innodb tables (ibdata, .ibd files) on the system start – this would avoid warmup problem and also make crash recovery fast even with very large log file – random IO is what usually limits recovery speed. Because files…
Post: How to recover a single InnoDB table from a Full Backup
January 25, 2012 By 10 Comments
… is that the table definition is stored in the InnoDB shared tablespace (ibdata) and the transaction IDs and log sequence numbers that… to not be dependent of the shared tablespace ibdata. That is, shutting down with innodb_fast_shutdown=0. We’ll use XtraBackup… the use of –export option runs a recovery process on the backup with innodb_fast_shutdown=0 and therefore merging all the…
Post: Connecting orphaned .ibd files
May 13, 2011 By 19 Comments
… modify SPACE in InnoDB dictionary. MySQL must be stopped at this point. There is a tool ibdconnect in Percona InnoDB Recovery Tool. Make… case if ibdata was updated MySQL will fail to start with error: InnoDB: Reading tablespace information from the .ibd files… InnoDB: Error: trying…
Comment: Connecting orphaned .ibd files
June 12, 2012 By 19 Comments
Aleksandr, I’m trying to restore my database (ibdata has been removed…), step-by-step instructions. After running “innochecksum” … the InnoDB InnoDB: tablespace but not the InnoDB log files. See InnoDB: http://dev.mysql.com/doc/refman/5.1/en/forcing-innodb-recovery.html InnoDB: for…
Comment: Choosing innodb_buffer_pool_size
January 24, 2010 By 39 Comments
… the db folders and a simple “mysqld –innodb_log_file_size=xxxxxxxxx –innodb_force_recovery=6″ (where xxxxxxxxx is the phisical size in… like that they are “in a strange position” into the ibdata file compared with those that dumps before the crash. And… memory and innodb files and memory setup: ib_logfiles on their and also on our server are 10MB while ibdata is 50MB…
Comment: How to change innodb_log_file_size safely
March 18, 2013 By 17 Comments
… MB InnoDB: Database physically writes the file full: wait… InnoDB: The log sequence number in ibdata files does not match InnoDB: the…:10:26 InnoDB: Database was not shut down normally! InnoDB: Starting crash recovery. InnoDB: Reading tablespace information from the .ibd files… InnoDB: Restoring…
Comment: How to change innodb_log_file_size safely
May 2, 2012 By 17 Comments
… MB InnoDB: Database physically writes the file full: wait… InnoDB: The log sequence number in ibdata files does not match InnoDB: the…:51:16 InnoDB: Database was not shut down normally! InnoDB: Starting crash recovery. InnoDB: Reading tablespace information from the .ibd files… InnoDB: Restoring…
Post: The tool I've been waiting for years
March 18, 2008 By 10 Comments
… storage engines which cache everything in their own cache memory – Innodb, Falcon, Maria. Having information about how large portion of table… from the cache yet. As Innodb does not read logfile unless in recovery these are waste and Innodb could use fadvice to give… because it is not aligned. [root@DB01 mysql]# du -h ibdata* 246G ibdata1 [root@DB01 mysql]# perl /tmp/fincore –justsummarize ibdata1…
