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

[Hari Gowtham]

----- Original Message -----
> From: "Atin Mukherjee" <amukherj at redhat.com>
> To: "Mohammed Rafi K C" <rkavunga at redhat.com>, "Gluster Devel" <gluster-devel at gluster.org>
> Sent: Tuesday, June 21, 2016 12:34:12 PM
> Subject: Re: [Gluster-devel] Support for Scaling TIered volume, ie Add/Remove brick and Rebalance
> 
> 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?

thanks Atin. I'll cc gluster-users 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
> > 

Updated link for draft of design draft
https://docs.google.com/document/d/1lj7f0aF5TS3N2I9inUBn-5p2ZpJSV4uptPnIN3KYKEo/edit?usp=sharing
please feel free to comment.

> > Thanks in Advance.
> > 
> > Regards
> > Rafi KC
> > _______________________________________________
> > Gluster-devel mailing list
> > Gluster-devel at gluster.org
> > http://www.gluster.org/mailman/listinfo/gluster-devel
> > 
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-- 
Regards, 
Hari.