Gluster users - Jul 2014 - Gluster stripped replicated

Hi,

I am using Gluster stripped replicated for a project in the University, but
I have some doubts about it. I have searched over the internet but there is
little information about this.

I am using a 2 stripped 2 replica, with 4 bricks.

Must I have a pair number of bricks? Can I choose where I want the replica
of the files? If I want to add a brick how is the data distributed? must I
add 2 bricks at a time? and if I take one brick off, what will happen?

I hope this is the right place for my doubts, if not please point me in the
right direction.

Thanks

-- 
*Felipe Torres F?bregas*
*University of Puerto Rico - R?o Piedras Campus*
*Department of Computer Science*
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On Wed, Jul 16, 2014 at 10:31:46AM -0400, Felipe Torres
wrote:
> Hi,
> 
> I am using Gluster stripped replicated for a project in the University, but
> I have some doubts about it. I have searched over the internet but there is
> little information about this.
> 
> I am using a 2 stripped 2 replica, with 4 bricks.
> 
> Must I have a pair number of bricks? Can I choose where I want the replica
> of the files? If I want to add a brick how is the data distributed? must I
> add 2 bricks at a time? and if I take one brick off, what will happen?
> 
> I hope this is the right place for my doubts, if not please point me in the
> right direction.
Instead of striping, you most likely want to use distribute. The 
combination of distribute-replicate is more common. The following blog 
post contains a nice explanation on the difference between stripe and 
distribute:
- http://joejulian.name/blog/should-i-use-stripe-on-glusterfs/

HTH,
Niels