Gluster users - Sep 2019 - Setting up volume for virtualization

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,
-- 


*Cristian Del Carlo*
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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_A1Server B - Replica_A2,Arbiter_BServer 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

    ? ?????, 6 ????????? 2019 ?., 12:54:48 ?. ???????+3, Cristian Del Carlo
<cristian.delcarlo at targetsolutions.it> ??????:
 
 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,
-- 


Cristian Del Carlo

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