… CHECK TABLE in INNODB is pretty useless. For my manually corrupted table I am getting: mysql> check table test; ERROR 2013 (HY000): Lost connection to MySQL server during query mysql> check table test; +———–+——-+———-+———-+ | Table…
Post: Verifying backup integrity with CHECK TABLES
February 1, 2012 By 4 Comments
… post on InnoDB‘s handling of corrupted pages, because the best way to check for corruption is with CHECK TABLES, but if a page is corrupt, InnoDB will crash the server to prevent access to the corrupt data…
Post: MySQL Crash Recovery
July 30, 2006 By 26 Comments
… use tiny script which moves out all MyISAM tables out of MySQL database directory, checks them with MyISAMchk and moves them back to… table open which is important. There are other problems which you may experience related to MySQL Crash Recovery – Restoring data from backup, corrupted Innodb…
Post: Magic Innodb Recovery self healing
May 22, 2007 By 2 Comments
… the table corrupting with Innodb, as it is limited to only one particular index on one particular table type it is likely to be Innodb… wanted to check if this is really required by trying lower recovery settings. Happily I was able to restart MySQL with innodb_force… to now dump potentially corrupted tables (in this particular corruption instance Innodb did not print table name in question), drop tables, restart Innodb without innodb_force_recovery and…
Post: Connecting orphaned .ibd files
May 13, 2011 By 12 Comments
…corrupted and innodb_force_recovery doesn’t help Chris Calender suggests two methods. The first is create/drop the table…MySQL server. 0. Create empty InnoDB tablespace. 1. Create the table: mysql>CREATE TABLE…
Post: Using LVM for MySQL Backup and Replication Setup
August 21, 2006 By 53 Comments
…is you can actually start MySQL Server on it and perform recovery, check tables or do whatever else you…is consistent. Backing up database which was already corrupted is very nasty problem you want to avoid…long running queries. If you’re using only Innodb tables and do not need to synchronize binary …
Post: Using MyISAM in production
June 17, 2006 By 35 Comments
… rows in tens of thousands tables) Innodb was better choice mainly because of thouse other behaviors … well table locks was the problem at…-checked tables fail with table does not exist error rather than wait forever. Hidden corruptions. If could be bad memory OS or MySQL bugs but corruption…
Post: Make your file system error resilient
August 24, 2011 By 8 Comments
…” either as Innodb is very sensitive to corruptions and if any of file system errors are reported back to MySQL/Innodb it will assert… auto check functions for your data partition and just check it manually as needed, same as you would every so often check MySQL tables for corruption…
Post: Heikki Tuuri answers to Innodb questions, Part II
November 4, 2007 By 13 Comments
…amount of concurrent writes to about 6 tables, what version of Innodb/MySQL would you recommend? I’ve … HT: You are right, bugs that cause data corruption, crashes, or wrong query results get the highest… status or bug in implementation. I’ll check with Alexander or check myself to see what it could…
Post: Bug#12704861
November 20, 2011 By 1 Comment
…MySQL 5.1.60. I’ll repeat here the full documentation from the release notes: “InnoDB… were being updated in an InnoDB table. (Bug #12704861)” This wasn’t …, the index tree would be corrupted. The correct solution is to …leaves_validate(): A debug function for checking that all clustered index leaf …
