[Gluster-users] Per-client prefered server?

[Krutika Dhananjay]

Ok, and what version of glusterfs are you using? 

-Krutika 
----- Original Message -----

> From: "Yannick Perret" <yannick.perret at liris.cnrs.fr>
> To: "Krutika Dhananjay" <kdhananj at redhat.com>
> Cc: gluster-users at gluster.org
> Sent: Thursday, March 3, 2016 7:23:09 PM
> Subject: Re: [Gluster-users] Per-client prefered server?

> Le 03/03/2016 13:18, Krutika Dhananjay a écrit :

> > What does "nearest" storage server mean? Are the clients residing in the
> > storage pool too? Or are they external to the cluster?
> 

> They are external.
> Nearest means that they are in the same building, linked by the same switch.
> Machines in the other building are rooted via some more equipments.

> --
> Y.

> > -Krutika
> 
> > ----- Original Message -----
> 

> > > From: "Yannick Perret" <yannick.perret at liris.cnrs.fr>
> > 
> 
> > > To: gluster-users at gluster.org
> > 
> 
> > > Sent: Thursday, March 3, 2016 5:38:33 PM
> > 
> 
> > > Subject: [Gluster-users] Per-client prefered server?
> > 
> 

> > > Hello,
> > 
> 

> > > I can't find if it is possible to set a prefered server on a per-client
> > 
> 
> > > basis for replica volumes, so I ask the question here.
> > 
> 

> > > The context: we have 2 storage servers, each in one building. We also
> > 
> 
> > > have several virtual machines on each building, and they can migrate
> > 
> 
> > > from one building to an other (depending on load, maintenance…).
> > 
> 

> > > So (for testing at this time) I setup a x2 replica volume, one replica
> > 
> 
> > > on each storage server of course. As most of our volumes are "many reads
> > 
> 
> > > - few writes" it would be better for bandwidth that each client uses the
> > 
> 
> > > "nearest" storage server (local building switch) - for reading, of
> > 
> 
> > > course. The 2 buildings have a good netlink but we prefer to minimize -
> > 
> 
> > > when not needed - data transferts beetween them (this link is shared).
> > 
> 

> > > Can you see a solution for this kind of tuning? As far as I understand
> > 
> 
> > > geo-replica is not really what I need, no?
> > 
> 

> > > It exists "cluster.read-subvolume" option of course but we can have
> > 
> 
> > > clients on both building so a per-volume option is not what we need. An
> > 
> 
> > > per-client equivalent of this option should be nice.
> > 
> 

> > > I tested by myself a small patch to perform this - and it seems to work
> > 
> 
> > > fine as far as I can see - but 1. before continuing in this way I would
> > 
> 
> > > first check if it exists an other way and 2. I'm not familiar with the
> > 
> 
> > > whole code so I'm not sure that my tests are in the "state-of-the-art"
> > 
> 
> > > for glusterfs.
> > 
> 

> > > Thanks in advance for any help.
> > 
> 

> > > Regards,
> > 
> 
> > > --
> > 
> 
> > > Y.
> > 
> 

> > > _______________________________________________
> > 
> 
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> > 
> 
> > > Gluster-users at gluster.org
> > 
> 
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> > 
> 
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