[ovirt-users] VMWare VSAN like setup with oVirt

[Yaniv Kaul]

On Tue, Jan 31, 2017 at 2:20 PM, Fernando Frediani <
fernando.frediani at upx.com.br> wrote:

> Hello
>
> Note that Gluster hasn't all the VSAN features yet so you will be able to
> replicate data.
>
> Also I personally think replica=3 is overkill and waste of space for mos
> scenarios. 2 should be enough and give a raid 1 like.


I'm not sure it's like RAID 1. In RAID 1, when one disk fails, I'm pretty
sure I know where the correct data is.
In Gluster, if you have a split brain, where's the correct data?

I suggest perhaps using an arbiter.
Y.


>
>
>
> On 31/01/2017 06:29, Nicolas Ecarnot wrote:
>
>> Le 31/01/2017 à 09:15, Anantha Raghava a écrit :
>>
>>> Hi,
>>>
>>> We are trying to create a setup that uses the internal disks of the
>>> hosts / nodes, yet provide the high availability, replication and
>>> failover using oVirt. The setup we are typing to build is close to
>>> VMWare VSAN which allows for all the above just using the internal disks
>>> of the ESXi servers.
>>>
>>> Can we achieve something similar with oVirt with Gluster?
>>>
>>
>> Absolutely. One of our oVirt setup is done this way.
>> Three hosts are set up as glusterFS servers (replica-3), as well as oVirt
>> nodes.
>> We choose to add a fourth host as an standalone engine, but you can
>> choose to use a VM for that (hyperconverge setup).
>>
>> I have no experience on similar setup with a random number of nodes,
>> neither if this can be achievable (some kind of network RAID-10)... (?)
>>
>>
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