… 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: Verifying backup integrity with CHECK TABLES
February 1, 2012 By 4 Comments
… asked how to check tables for corruption. This kind of ties into my recent 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…
Comment: My "hot" list for next InnoDB features
April 2, 2009 By 18 Comments
… for corrupt table as well. During innodb crash recovery the modes available should provide some table dictionary i.e. some dynamic view informing the corrupt innodb tables. Presently you dont know how many tables in db are corrupted without spending some good amount of time with innodb recovery…
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: Recover BLOB fields
July 1, 2010 By 4 Comments
… not supported by Percona InnoDB Recovery Tool. The reason consists in a special way InnoDB stores BLOBs. An InnoDB table is stored in a…_OFFSET and BTR_EXTERN_LEN must not be corrupted. The tool outputs the recovered table in tab-separated values format. BLOBs are… %x’); * – there is a typo in Recovery of Lost or Corrupted InnoDB Tables Presentation
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: Wishes for mysqldump
May 22, 2007 By 19 Comments
Dealing with dumping and recovery of large and partially corrupted database I’ve got couple of feature ideas for mysqldump … many tables which have different priority for your application. Safe Dump Dumping corrupted Innodb tables you will have some of the them crashing Innodb which breaks mysqldump process. It would be great for load script to record in the logs such table was…
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…
