[Gluster-users] using a preferred node ?

[Ravishankar N]

On 05/10/2015 08:29 PM, Mathieu Chateau wrote:
> Hello,
>
> Short way: Is there any way to define a preferred Gluster server ?
>
> Long way:
> I have the following setup (version 3.6.3) :
>
> Gluster A  <==> VPN <==> Gluster B
>
> Volume is replicated between A and B.
>
> They are in same datacenter, using a 1Gb/s connection, low latency (0.5ms)
>
> I have gluster clients in lan A & B.
>
> When doing a "ls" on big folder (~60k files), both gluster node are 
> used, and so it need 9mn instead on 1mn if only the local gluster is 
> reachable.
>

Lookups (and writes of course) from clients are sent to both  bricks 
because AFR uses the result of the lookup to select which brick to read 
from if there is a pending heal etc.
If the file is clean on both A and B, then reads are always served from 
the local brick. i.e. reads on clients mounted on A will be served from 
the brick in A (and likewise for B).

Hope that helps,
Ravi


> It's HA setup, application is present on both side. I would like a 
> master/master setup, but using only local node as possible.
>
>
> Regards,
> Mathieu CHATEAU
> http://www.lotp.fr
>
>
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