[Gluster-users] Throughout over infiniband

[Kaleb S. KEITHLEY]

On 09/10/2012 08:56 AM, Stephan von Krawczynski wrote:
> On Mon, 10 Sep 2012 08:06:51 -0400
> Whit Blauvelt <whit.gluster at transpect.com> wrote:
>
>> On Mon, Sep 10, 2012 at 11:13:11AM +0200, Stephan von Krawczynski wrote:
>>> [...]
>>> If you're lucky you reach something like 1/3 of the NFS
>>> performance.
>> [Gluster NFS Client]
>> Whit
>
> There is a reason why one would switch from NFS to GlusterFS, and mostly it is
> redundancy. If you start using a NFS-client type you cut yourself off the
> "complete solution". As said elsewhere you can as well export GlusterFS via
> kernel-nfs-server. But honestly, it is a patch. It would be better by far if
> things are done right, native glusterfs client in kernel-space.
> And remember, generally there should be no big difference between NFS and
> GlusterFS with bricks spread over several networks - if it is done how it
> should be, without userspace.
>

Just to be clear, when you export a gluster volume via NFS, the clients 
are using kernel NFS. The gluster NFS server is the only thing in user 
space.

The redundancy you do lose is the automatic fail-over to the other 
servers if the NFS server the client mounted from fails.

If you're using replication, you do not lose that when you chose to use NFS.

-- 

Kaleb