Gluster users - Apr 2017 - "Fake" distributed-replicated volume

Greetings, Glusterites -

I have a suboptimal situation, and am wondering if there is any way to create a
replica-3 distributed/replicated volume with three machines. I saw in the docs
that the create command will fail with multiple bricks on the same peer; is
there a way around that/some other way to achieve this?

The reason for this terrible idea is entirely about deadlines interacting with
reality. I need to go into production with a new volume I?d really like to be
D/R before additional machines arrive.

Thanks,

-j

On 04/07/2017 11:34 PM, Jamie Lawrence wrote:
> Greetings, Glusterites -
>
> I have a suboptimal situation, and am wondering if there is any way to
create a replica-3 distributed/replicated volume with three machines. I saw in
the docs that the create command will fail with multiple bricks on the same
peer; is there a way around that/some other way to achieve this?
>
> The reason for this terrible idea is entirely about deadlines interacting
with reality. I need to go into production with a new volume I?d really like to
be D/R before additional machines arrive.
You can use the force option at the end of the `volume create` command 
to make it work for whatever brick placement strategy you wish but since 
you anyway have 3 machines, there shouldn't be a need to do that. The 
following layout should work:

Node1  Node2  Node3
--------  --------- ---------
B1         B1'        B1"   <----------3 bricks of a replica subvol
B2         B2'       B2"
B3         B3'       B3"

and so on. `Volume create` would complain only when you try to place 
bricks of the same replica subvol on the same node.


Hope that helps,
Ravi
> Thanks,
>
> -j
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