Re: Setting up volume for virtualization

Cristian Del Carlo <cristian.delcarlo@xxxxxxxxxxxxxxxxxx> · Sat, 7 Sep 2019 15:06:31 +0200

Thanks for the reply, 

I'll do some tests of the suggested configuration.

Best Regards,

Il giorno ven 6 set 2019 alle ore 20:31 Strahil Nikolov <hunter86_bg@xxxxxxxxx> ha scritto:

        Both are bad. Why -> you have an "even" number of replicas and this can cause  split brain situation.
I would recommend you to consider this approach:

Server A - Replica_A1
Server B - Replica_A2,Arbiter_B
Server C - Arbiter_A,Replica_B1
Server D - Replica_B2

As the arbiter doesn't require much resources, you can use it safely.
The negative side of such deployment - you have 2 separate volumes which you have to manually balance the VM's images so both Volumes keep the same level of load.

Still, this is my own opinion and it might be a better solution.

Best Regards,
Strahil Nikolov

                    В петък, 6 септември 2019 г., 12:54:48 ч. Гринуич+3, Cristian Del Carlo <cristian.delcarlo@xxxxxxxxxxxxxxxxxx> написа:

                Hi,

I have an environment consisting of 4 nodes ( with large disks).
I have to create a volume to contain image of virtual machines.

Is it better to set a Distributed Replicated Volumes like this?

# gluster volume create test-volume replica 2 transport tcp server1:/exp1 server2:/exp2 server3:/exp3 server4:/exp4
Or a Replicated Volumes like this?

# gluster volume create test-volume replica 4 transport tcp server1:/exp1 server2:/exp2 server3:/exp3 server4:/exp4

Thanks,
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Cristian Del Carlo

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