May 24, 2012

Comment: How FLUSH TABLES WITH READ LOCK works with Innodb Tables

…, we bring up the new mysqld, which finds a crashed innodb, recovers this, and then it is being configured to become a… machine. Every once in a while the recovery of the innodb in the target location fails, though, even though it has…

Comment: How to recover a single InnoDB table from a Full Backup

recover a single table # xtrabackup_55 –backup –innodb-file-per-table –target-dir=/mnt/mysql/export/ –tables=data # xtrabackup_55 –prepare –export –innodb… the InnoDB InnoDB: tablespace but not the InnoDB log files. See InnoDB: http://dev.mysql.com/doc/refman/5.5/en/forcing-innodb-recovery.html InnoDB

Comment: How FLUSH TABLES WITH READ LOCK works with Innodb Tables

… an InnoDB clone that is unrecoverable. I have a followup question, though. The target InnoDB, when it recovers, says: … 120327 11:25:22 InnoDB: Starting an apply batch of log records to the database… … InnoDB: Apply batch completed InnoDB

Comment: How FLUSH TABLES WITH READ LOCK works with Innodb Tables

… or user error. I think the innodb data from the backup where Innodb fails to recover should be passed to your support provider for investigation. It might be related to Innodb itself or…

Post: How to estimate time it takes Innodb to Recover ?

… you better to understand how Innodb recovery works. When Innodb recovers from logs it finds the last checkpoint time. Innodb has fuzzy checkpointing and… drives. So how do you estimate how long it takes Innodb to Recover ? Now you know there are multiple of variables which… expect system to handle and crash Innodb few times to see how long it takes Innodb to recover. I’d recommend to crash…

Post: A recovery trivia or how to recover from a lost ibdata1 file

recover.$CURRENT_TABLENAME like test.$CURRENT_TABLENAME;” sleep 1 echo “switching to Innodb ” mysql -u root -e “alter table recover.$CURRENT_TABLENAME engine=Innodb;” sleep 1 echo “discarding tablespace ” mysql -u root -e “alter table recover

Post: How to recover deleted rows from an InnoDB Tablespace

recover the data. The tool that we’re going to use to achieve this objetive is Percona Data Recovery Tool for InnoDB…-31 | +——–+——–+————+————+ Data recovered! 10008 has recovered his salary again :) Conclusion With InnoDB the deleted rows are not lost. You can recover them from the…

Post: Recovering Innodb table Corruption

… this: InnoDB: Database page corruption on disk or a failed InnoDB: file read of page 7. InnoDB: You may have to recover from a backup. 080703 23:46:16 InnoDB: Page dump… may wish to use Innodb Recovery Toolkit which is also helpful in cases you’ve want to recover deleted rows or dropped…

Post: How to recover a single InnoDB table from a Full Backup

… faster to recover single tables than a full backup. This is easy with MyISAM but if your tables are InnoDB the process… of time and some headaches ;) Instead of recovering all the InnoDB data we are going to recover only the “salaries” table: Discard the… back again! Conclusion: As we learned , you can also recover single InnoDB table as with MyISAM but knowing in advance that there…

Post: Innodb Undelete and Sphinx Support

… 100% recovered if they were not overwritten yet, as well as recover dropped Innodb tables. We also can get some data recovered from covering…. Recovering Innodb is not the only recovery task we had to do over last year and a bit. We had to recover data… write more details about Innodb data recovery process and release code for our innodb recovery toolset, so you can recover your data for…