Gluster users - Mar 2009 - BDB speed benefits

Hi.

Any idea what speed benefits the BDB translator provides over standard file
storage?

Also, how it's reliable, and what's the maximum file size it stores in
the
DB?

Thanks.
-------------- next part --------------
An HTML attachment was scrubbed...
URL:
<http://supercolony.gluster.org/pipermail/gluster-users/attachments/20090305/2b391a92/attachment.html>

Hi Stas,
BerkleyDB storage backend makes GluserFS a distributed database file system,
efficient for
very small files (less than 10KB).

It also allows you to read and write to a file with out even opening it, using
standard
extended attribute system calls (in a single atomic transaction). "Extended
attribute get"
with key as file name will return the entire content of the file. Similarly it
also works
for "extended attribute put" with key=FILENAME and value=CONTENT to
create and write to
the file.

Files will be stored as BDB records. Each directory has its own BDB file. If you
have
a cluster of 10 nodes, each directory will be backed by a cluster of 10
BerkeleyDB
files. Every new directory you create, a new set of BDB files will be alloted
across
the cluster.

It is a recent addition to GlusterFS 2.0.x codebase. Do *not* use it for
production,
until it is widely tested by the community. Please let us know if you come
across bugs.

Happy Hacking,
--
Anand Babu Periasamy
GPG Key ID: 0x62E15A31
Blog [http://ab.multics.org]
GlusterFS [http://www.gluster.org]
The GNU Operating System [http://www.gnu.org]



Stas Oskin wrote:
> Hi.
> 
> Any idea what speed benefits the BDB translator provides over standard 
> file storage?
> 
> Also, how it's reliable, and what's the maximum file size it stores
in
> the DB?
> 
> Thanks.