[ovirt-users] GFS2 and OCFS2 for Shared Storage

[Fernando Frediani]

Hello Nicolas. Thanks for your reply.

As you correctly said GlusterFS is not Block Storare but it is 
Distributed Storage. There are scenarios where it simply doesn't apply 
like a Shared Block storage between physical servers in a chassis or 
simply shared DAS (Direct Attached Storage). Otherwise would you would 
unnecessarily use network throughput which can be better used for other 
things like VM legit traffic and not have the best performance you could 
reading/writing directly from/to a Shared Block Storage.

Distributed storage is always a great mindset for newer scenarios, but 
it doesn't apply to all scenarios and I wouldn't think Redhat would 
direct people to a single way.

Fernando


On 23/11/2016 11:11, Nicolas Ecarnot wrote:
> Le 23/11/2016 à 13:03, Fernando Frediani a écrit :
>> Has anyone managed to use GFS2 or OCFS2 for Shared Block Storage between
>> hosts ? How scalable was it and which of the two work better ?
>>
>> Using traditional CLVM is far from good starting because of the lack of
>> Thinprovision so I'm willing to consider either of the Filesystems.
>>
>> Thanks
>>
>> Fernando
>>
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>
> Hello Fernando,
>
> Redhat took a clear direction towards the use of GlusterFS for its 
> Software-defined storage, and lots of efforts are made to make 
> oVirt/RHEV work together smoothly.
> I know GlusterFS is not a block storage, but it's worth considering 
> it, especially if you intend to setup hyper-converged clusters.
>