June 19, 2013

Post: How to recover table structure from InnoDB dictionary

… from .frm files over taken from backups. But in some cases even .frm files is not an option: Table was dropped and innodb_file_per_table is ON Frm file corrupt, zeroed out, lost or SHOW CREATE TABLE crashes MySQL There is yet another…

Post: MySQL Crash Recovery

… log are synchronized. In MySQL 5.0 XA is taking care of this synchronization. .frm Corruption – Few people know MySQL is not really ACID… but .frm not created or not completely written. Partially written .frm files or .frm being unsync with internal Innodb dictionary may cause MySQL to fail with wierd error messages. In MySQL 4.1 sync_frm option…

Post: MySQL Backup tools used by Percona Remote DBA for MySQL

… entire schema) was dropped accidentally Your InnoDB table was corrupt and mysql shuts down Your server or RAID controller crashes and all…. This will rsync a copy of all the frm files and all the MYD/MYI files. It then does a second rsync while… greatly cut down on the lock time by syncing the frm files. Enable –slave-info when backing up from a slave so…

Post: Connecting orphaned .ibd files

…. actor.frm and actor.ibd. The annoying thing about .ibd files you can’t easily copy the an .ibd file to another MySQL server… to: 1. ibdata1 is erroneously removed 2. ibdata1 is heavily corrupted and innodb_force_recovery doesn’t help Chris Calender suggests… from an .ibd file and updates the dictionary in ibdata1. # ./ibdconnect -o /var/lib/mysql/ibdata1 -f /var/lib/mysql/sakila/actor.ibd…

Post: Add an option to Fail on Innodb Initialize failure, Please ?

… customers to resolve this “frm corruption” issue it is the time to return to it again. During MySQL 5.0 release cycle the… MySQL server Error Logs but the error message accessing Innodb tables is also very obfuscated: error : Incorrect information in file: ‘./prod/user.frm… Engine) failed to initialize ? This error suppose to mean .frm file is corrupted, and indeed you still can get this error message in…

Post: Using INFORMATION_SCHEMA instead of shell scripting

…because of corrupted Innodb tablespace – to do this I had to clean all .frm files which …frm“) | +———————————————————————+ | rm -f /var/lib/mysql/art73/article73.frm | | rm -f /var/lib/mysql/art73/author73.frm | | rm -f /var/lib/mysql/art73/forum73.frm

Comment: MySQL Crash Recovery

Hi Is there any way to recreate a create statement from a table.frm file?, when the table.MYI has become corrupted. And it is so big, running analyze table or myisamchk takes days? table.MYD is 160GB and table.MYI is 80GB? Any input greatly appreciated (mysql 4.0.27) Thanks

Comment: Using LVM for MySQL Backup and Replication Setup

… that the MyISAM tables would be corrupt (more likely that just their indexes would be corrupt) and need repairing. There could be missing records or half-written records depending on when you take the snapshot. And MySQL… is “just a file;-) I mean you could do this: “touch /var/lib/mysql/test/thisisnotatable.{MYI,MYD,frm}” and start MySQL, and it…