The Ultimate Guide to High Availability with MariaDB

Comments - mariadbd Options

11 years, 7 months ago Elena Stepanova
Re: mysqld Options (full list)

In some cases O_DIRECT value of --innodb-flush-method can be ignored by InnoDB with a warning. Currently, as of 5.5.29 version, the warning says

InnoDB: Failed to set O_DIRECT on file ./innodb_data: OPEN: Invalid argument, continuing anyway
InnoDB: O_DIRECT is known to result in 'Invalid argument' on Linux on tmpfs, see MySQL Bug#26662

It does not necessarily mean that the data is really located on tmpfs, it is just the most common reason. Another known cause is a combination of O_DIRECT value of the option and data=journal in the disk configuration.

See MDEV-4159 for more details.

 
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