Gluster users - Jul 2009 - hi,all! how to make GlusterFS wokr like RAID 5??

there are 3 servers in my clustered system, and now it's required to provide
function like RAID 5.

any guy here could tell how to combine the translators to implement the
application??

thanks in advance!

Gluster cannot do a "Raid5" like setup.  With 3 servers you're
really best
off using replication across all three.
Raid6 is in the roadmap however its not slated for any upcoming release yet.

http://gluster.org/docs/index.php/GlusterFS_Roadmap

<http://gluster.org/docs/index.php/GlusterFS_Roadmap>liam

On Thu, Jul 30, 2009 at 4:40 AM, Yi Ling <lingyi.pro at gmail.com> wrote:
> there are 3 servers in my clustered system, and now it's required to
> provide
> function like RAID 5.
>
> any guy here could tell how to combine the translators to implement the
> application??
>
> thanks in advance!
>
> _______________________________________________
> Gluster-users mailing list
> Gluster-users at gluster.org
> http://gluster.org/cgi-bin/mailman/listinfo/gluster-users
>
>

On Thu, 30 Jul 2009, Yi Ling wrote:
> there are 3 servers in my clustered system, and now it's required to
provide
> function like RAID 5.
>
> any guy here could tell how to combine the translators to implement the
> application??
Well it would not be RAID 5, but you would get redundancy and 2/3rd the 
space.

Take each server and make 2 partitions out of the free space such as:

Server 1
Brick 1
Mirror 3

Server 2
Brick 2
Mirror 1

Server 3
Brick 3
Mirror 2

volume block0
  type cluster/replicate
  subvolumes brick1 mirror1
end-volume

volume block1
  type cluster/replicate
  subvolumes brick mirror1
end-volume

volume block2
  type cluster/replicate
  subvolumes brick2 mirror2
end-volume

volume unify
  type cluster/distribute
  subvolumes block0 block1 block2
end-volume