InnoDB: Operating system error number 5 in a file operation Innodb engine not starting

[santhosh]

Hi All,
My Mysql server stopped unexpectedly. The INNODB database engine is not starting. THe error trace follows. does any body has a clue how to solve this issue . Thanks in Advance
Santhosh

061004 02:16:00 mysqld restarted
061004 2:16:00 [Warning] Asked for 196608 thread stack, but got 126976
061004 2:16:00 InnoDB: Started; log sequence number 4 3012443422
061004 2:16:00 [Note] /usr/sbin/mysqld: ready for connections.
Version: '5.0.21-standard-log' socket: '/home/virtual/FILESYSTEMTEMPLATE/.mysqlsock/mysql.sock' port: 3306 MySQL Community Edition - Standard (GPL)
InnoDB: Error: tried to read 16384 bytes at offset 1 2213085184.
InnoDB: Was only able to read -1.
061004 2:16:03 InnoDB: Operating system error number 5 in a file operation.
InnoDB: Error number 5 means 'Input/output error'.
InnoDB: Some operating system error numbers are described at
InnoDB: http://dev.mysql.com/doc/mysql/en/Operating_System_error_codes.html
InnoDB: File operation call: 'read'.
InnoDB: Cannot continue operation.

Number of processes running now: 0
061004 02:16:03 mysqld restarted
061004 2:16:03 [Warning] Asked for 196608 thread stack, but got 126976
061004 2:16:03 InnoDB: Started; log sequence number 4 3012443422
061004 2:16:03 [Note] /usr/sbin/mysqld: ready for connections.
Version: '5.0.21-standard-log' socket: '/home/virtual/FILESYSTEMTEMPLATE/.mysqlsock/mysql.sock' port: 3306 MySQL Community Edition - Standard (GPL)