… table # xtrabackup_55 –backup –innodb-file-per-table –target-dir=/mnt/mysql/export/ –tables=data # xtrabackup_55 –prepare –export –innodb-file-per-table…. InnoDB: Your database may be corrupt or you may have copied the InnoDB InnoDB: tablespace but not the InnoDB log files. See InnoDB…
Post: Recovering Innodb table Corruption
July 4, 2008 By 19 Comments
… delete any data (though you can create or drop Innodb tables): mysql> optimize table test; +———–+———-+———-+———————————-+ | Table | Op | Msg_type | Msg_text | +———–+———-+———-+———————————-+ | test.test | optimize… sure indexes are not corrupted. So we looked at how to get your data back from simple Innodb Table Corruption. In more complex cases you may need to use higher innodb_force_recovery modes to block…
Post: Innodb Recovery Update - The tricks what failed.
May 24, 2007 By 3 Comments
… dump tables with innodb_force_recovery=4 was confirmed to be added in 5.0.33, meaning you could not really recover corrupted Innodb tables… have some impact. Innodb tables rarely become corrupt Indeed even if you leave out crashes in my experience Innodb tables become corrupted more seldom than MyISAM…
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… 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: Data Corruption, DRBD and story of bug
November 29, 2010 By 6 Comments
… the tablespace! InnoDB: The tablespace free space info is corrupt. InnoDB: You may need to dump your InnoDB tables and recreate the whole InnoDB: database! Trash state means that InnoDB won’t…
Post: Add an option to Fail on Innodb Initialize failure, Please ?
October 11, 2007 By 9 Comments
… MySQL does not stop if Innodb storage engine failed to initialize but starts properly… just having Innodb tables unavailable. I honestly do not… accessing Innodb tables is also very obfuscated: error : Incorrect information in file: ‘./prod/user.frm’ How this supposed to tell you Innodb (or… by this error message and think it is indeed .frm corruption – trying to restore .frm from backup or other servers and…
Post: Heikki Tuuri answers to Innodb questions, Part II
November 4, 2007 By 13 Comments
… to Oracle? HT: You are right, bugs that cause data corruption, crashes, or wrong query results get the highest priority. We…. Q37: We have a fairly large Innodb table (150GB) that is showing poor performance for full table scans. using O_DIRECT, we are… not showed up in “show innodb statusâ€. select * from table where id=5 show innodb status: Hash table size 10624987, used cells 1…
Post: Innodb Undelete and Sphinx Support
November 12, 2007 By 4 Comments
… they were not overwritten yet, as well as recover dropped Innodb tables. We also can get some data recovered from covering indexes… had to recover data using query log, corrupted binary log and dig into MyISAM tables. You would ask who would ever need… task to write more details about Innodb data recovery process and release code for our innodb recovery toolset, so you can recover…
Post: MySQL Crash Recovery
July 30, 2006 By 26 Comments
… also mention if you have innodb_file_per_table=1 your recovery speed will depend on number of Innodb tables you have, as well as many other operations, so beware. Binary log corruption – Binary log may become corrupted and out… care of this synchronization. .frm Corruption – Few people know MySQL is not really ACID even with Innodb tables, at least not for DDL…
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… way accesses to non-checked tables fail with table does not exist error rather than wait forever. Hidden corruptions. If could be bad… cases table corruption will be mild, especially on low loaded servers. Many users do not even know you need to check MyISAM tables…
