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From:Marten Lehmann Date:November 7 2007 7:45am
Subject:innodb mysql crash
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today I got this in my logs and mysql stopped working.

InnoDB: how to resolve the issue.
071107  8:46:26  InnoDB: Flushing modified pages from the buffer pool...
071107  8:46:26  InnoDB: Started; log sequence number 1 1008136481
/var/mysql/mysql-4.1.18/libexec/mysqld: ready for connections.
Version: '4.1.18-log'  socket: '/tmp/mysql.sock'  port: 3306  Source
InnoDB: Error: page n:o stored in the page read in is 538976288, should be
071107  8:46:28  InnoDB: Error: page 538976288 log sequence number 538976288
InnoDB: is in the future! Current system log sequence number 1 1008136645.
InnoDB: Your database may be corrupt.
InnoDB: Database page corruption on disk or a failed
InnoDB: file read of page 1644.
InnoDB: You may have to recover from a backup.
071107  8:46:28  InnoDB: Page dump in ascii and hex (16384 bytes):
 len 16384; hex
071107  8:46:29  InnoDB: Page checksum 138226020, prior-to-4.0.14-form
checksum 3161919040
InnoDB: stored checksum 538976288, prior-to-4.0.14-form stored checksum
InnoDB: Page lsn 538976288 538976288, low 4 bytes of lsn at page end 538976288
InnoDB: Page number (if stored to page already) 538976288,
InnoDB: space id (if created with >= MySQL-4.1.1 and stored already) 538976288
InnoDB: Database page corruption on disk or a failed
InnoDB: file read of page 1644.

So great, that mysql doesn't even tell me at which table or database to look.

InnoDB: You may have to recover from a backup.
InnoDB: It is also possible that your operating
InnoDB: system has corrupted its own file cache
InnoDB: and rebooting your computer removes the
InnoDB: error.
InnoDB: If the corrupt page is an index page
InnoDB: you can also try to fix the corruption
InnoDB: by dumping, dropping, and reimporting
InnoDB: the corrupt table. You can use CHECK
InnoDB: TABLE to scan your table for corruption.
InnoDB: See also
InnoDB: about forcing recovery.
InnoDB: Ending processing because of a corrupt database page.

Number of processes running now: 2
mysqld process hanging, pid 19729 - killed
mysqld process hanging, pid 19729 - killed
071107 08:46:29  mysqld restarted
071107  8:46:29 [ERROR] Can't start server: Bind on TCP/IP port: Address
already in use
071107  8:46:29 [ERROR] Do you already have another mysqld server running on
port: 3306 ?
071107  8:46:29 [ERROR] Aborting

071107  8:46:29 [Note] /var/mysql/mysql-4.1.18/libexec/mysqld: Shutdown

071107 08:46:29  mysqld ended

I cannot count any more how often I had problems with innodb. I regret ever
compiled it in, but now that a lot of users are using it, I need to recover
from the problem.

But there is one major problem: All error messages and recovery documentation
of innodb sound, as if I would deal with just a few tables. But I have
hundrets of databases with thousands of tables! So there is no fast dump and
insert of tables.

Any ideas (besides from dumping everything and importing at then)?


innodb mysql crashMarten Lehmann7 Nov
  • Re: innodb mysql crashRichard Edward Horner8 Nov