Tuning Innostore backend (flush_mode option error)

Germain Maurice germain.maurice at linkfluence.net
Tue May 18 05:29:04 EDT 2010


I red this page : 
https://wiki.basho.com/display/RIAK/Innostore+Configuration+and+Tuning
Then, I put this configuration to my node :

{innostore, [
{data_home_dir, "/reiser/riak/innodb"}, %% Where data files go
{log_group_home_dir, "/reiser/riak/innodb"}, %% Where log files go
{log_files_in_group, 6}, % How many files you need — usually, 3 < x < 6
{log_file_size, 268435456}, % No bigger than 256MB — otherwise recovery 
takes too long
{buffer_pool_size, 1073741824} %% 1024MB in-memory buffer in bytes
,{flush_mode, "O_DIRECT"} %% Linux specific
]}

But when i launch Riak, i got this error/warning :

=ERROR REPORT==== 18-May-2010::11:18:14 ===
Skipping config setting flush_mode; unknown option.
InnoDB: Mutexes and rw_locks use GCC atomic builtins
100518 11:18:18 InnoDB: highest supported file format is Barracuda.
100518 11:18:25 Embedded InnoDB 1.0.6.6750 started; log sequence number 
110097552195

Is there a mistake in the option name ?

Thanks
Germain




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