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Old 02-20-2010, 02:29 AM   #1
Registered: Jul 2008
Posts: 184

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show variables like 'innodb_flush_method'; empty


when I check mysql innodb_flush_method it's empty. is it normal?
Old 02-28-2010, 11:36 PM   #2
Registered: Sep 2003
Posts: 382

Rep: Reputation: 87
AFAIK, yes, it's normal. Here's the supporting documentation produced by running the command:

info mysql

if your mysql related files are complete and properly installed. Then navigating to:


then search for innodb_flush_method, this is the info for linux:

*Permitted Values *
*Type* (linux) `enumeration'
*Default* `fdatasync'
*Valid Values* `fdatasync',

Formerly it was possible to specify a value of `fdatasync' to
obtain the default behavior. This is no longer possible as of
MySQL 5.1.24 because it can be confusing that a value of
`fdatasync' causes use of `fsync()' rather than `fdatasync()' for

So AFAIK, the default is to have no value for that parameter.


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