[ovirt-users] 4-node oVirt with replica-3 gluster

[Sahina Bose]

On Fri, Sep 23, 2016 at 7:41 PM, Davide Ferrari <davide at billymob.com> wrote:

>
>
> 2016-09-23 15:57 GMT+02:00 Sahina Bose <sabose at redhat.com>:
>
>>
>> You could do this - where Node3 & Node 2 also has arbiter bricks. Arbiter
>> bricks only store metadata and requires very low storage capacity compared
>> to the data bricks.
>>
>> Node1  Node2     Node3        Node4
>> brick1   brick1      arb-brick
>>             arb-brick  brick1        brick1
>>
>
> Ok, cool! And this won't pose any problem if Node2 or Node4 fail?
>

No.

>
> The syntax shuld be this:
>
> gluster volume create data replica 3 arbiter 1 node1:/brick node2:/brick
> node2:/arb_brick node3:/brick node4:/brick node4:/arb_brick
>

Correction: arb_bricks should be from a different node as below:

gluster volume create data replica 3 arbiter 1 node1:/brick node2:/brick
node3:/arb_brick node3:/brick node4:/brick node2:/arb_brick



> is not a problem having more than a brick on the same host for the volume
> create syntax?
>
> Thanks again
>
> --
> Davide Ferrari
> Senior Systems Engineer
>
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