[Gluster-devel] Support for Scaling TIered volume, ie Add/Remove brick and Rebalance

[Atin Mukherjee]

I've added my comments in the document. I also feel that getting an
user's experience on the command semantics is much required, so mind to
open this up in gluster-users ML too?

On 06/21/2016 11:31 AM, Mohammed Rafi K C wrote:
> Hi,
> 
> The current implementation of Tiering lacks support for rebalance, as
> the migration daemon uses the framework for rebalance process. Because
> of this constraints, we were forced to remove support for add/remove
> brick on a tired volume.
> 
> We are now focusing to bring rebalance support along with add/remove
> brick. Steps involved in the overall process would be ,
> 
> 1) Tier process as a service based daemon
> 2) Changes to current add/remove brick cli to specify the tier which we
> want to scale.
> 3) Changes to rebalance cli to start rebalance on tiers
> 4) glusterd support for add/remove brick operation on tiering.
> 5) Changes to rebalance status.
> 6) Addressing Backward compatibility.
> 
> Before starting, we want to get your expert opinions on this topics. I
> have created a doc [1] file that contains some of the question that
> stuck in mind. It would be great if you guys can provide your thoughts
> as a comment on the Doc file.
> 
> [1] https://goo.gl/ODO5Pc
> 
> Thanks in Advance.
> 
> Regards
> Rafi KC
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