If I’m not wrong GlusterFS in oVirt requires 3 hosts.

Here’s the RHHI guide, it’s pretty much the same for oVirt: 
https://access.redhat.com/documentation/en-us/red_hat_hyperconverged_infrastructure/1.1/html/deploying_red_hat_hyperconverged_infrastructure/

> On 8 Jan 2018, at 18:10, carl langlois <crl.langl...@gmail.com> wrote:
> 
> Hi all
> 
> After screwing my infra with the update to 4.2 (probably a bad manipulation), 
> i am planning a rebuild of the entire infra. First i want to replace my NFS 
> storage with a glusterfs storage. All documentation tell me that i need 3 
> hosts.. but for the moment i only have 2 but planning to had more later. 
> 
> So does it make sense to start with 2 hosts and use glusterfs as the storage 
> domain(lets says with a replicate of two with all its limitations). 
> If it make sense, 
> 1- what is the best way to do it.
> 2- how hard will it be to had the 3rd host when available and make it  
> replica 2+arbiter.
> 
> Also in a setup where i have 3 hosts (replica 2+arbiter) does all the 3 hosts 
> can run users vm?
> 
> Thanks for your inputs.
> 
> Carl
> 
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