[Gluster-devel] more details about "No metadata dependencies" ??

[Harald Stürzebecher]

Hello!

2009/7/31 Yi Ling <lingyi.pro at gmail.com>:
> there is a section about metadata on page http://www.gluster.com/news.php
>
> "No metadata dependencies - metadata management is frequently a source of
> performance bottlenecks, particularly when there are a very large number of
> files, and can be a single point of failure in traditional file systems.
> GlusterFS eliminates this problem with intelligent data placement, an
> automatic data distribution method that optimizes the use of resources and
> eliminates metadata bottlenecks."
>
> yes,it's a advantage of GlusterFS. but yet i found no more detailed
> information about the "intelligent data placement" "an automatic data
> distribution methed". could anyone explain it in detail? and something about
> file managemment~~~

AFAIK, the GlusterFS metadata is stored as extended attributes to the
files in the underlying filesystem.

Hints can be found here:

http://www.gluster.org/docs/index.php/Understanding_AFR_Translator#Locking_and_Change_Log

http://www.gluster.org/docs/index.php/Setting_up_AFR_on_two_servers_with_pre-existing_data#Preparing_the_directories


Harald Stürzebecher