[ovirt-users] New user intro & some questions

[Jason Brooks]

----- Original Message -----
> From: "George Skorup" <george at mwcomm.com>
> To: users at ovirt.org
> Sent: Monday, February 9, 2015 4:29:15 PM
> Subject: Re: [ovirt-users] New user intro & some questions
> 
> Scott,
> 
> I'm sure you are completely correct. I do not want to run oVirt this
> way. I would very much prefer a dedicated machine for the engine,
> dedicated KVM nodes and dedicated storage/gluster nodes, or a real SAN.
> But this is the "you get this" and "make it work" that I get from upper
> management. So I'm going to continue testing 3.5.1 this way, and when
> it's too much load / performance sucks, then I can say, "I told you so".
> 
> I was reading through the planned features for 3.6 which says storage on
> the virt nodes will be supported. Again, I understand this is not
> optimal, but if I have to tell them this needs to wait for 3.6 to be
> released for this configuration to be supported, then so be it. And if
> performance still sucks, which I don't doubt, then... I told them so.

The meaning of "support" is important here -- support from whom? It's 
true that there's no gluster+virt SKU of the RHEV downstream project.
All configurations of ovirt proper are self-supported, or community-
supported, and what we choose to support is up to us individuals.

However, gluster + virt on the same nodes does work -- even w/ management
through the engine. I do use gluster on my virt nodes, but I don't manage
them w/ the engine, because, afaik, there isn't a way to have gluster and 
virt on separate networks this way, so I just manage gluster from the
gluster cli.

It's true, oVirt is happiest w/ separate machines for everything, and
a rock-solid san of some sort, etc., but that's not the only way, and 
as you point out, hardware isn't free.

Jason

> 
> Anyway.. I was playing around today, and I'm not sure how or why, but
> the engine UI now shows the gluster volume stuff.. on the combined virt
> + gluster nodes.
> 
> 
> 
> On 2/7/2015 1:16 PM, Scott Worthington wrote:
> > On 2/7/2015 9:47 AM, George Skorup wrote:
> >> On 2/7/2015 7:46 AM, Scott Worthington wrote:
> >>> You can manage your oVirt gluster volumes from the oVirt engine UI.
> >>>
> >>> However, the gluster volumes cannot be on your oVirt hosts.  An oVirt
> >>> Host
> >>> cannot be an oVirt-managed gluster volume provider as well.  These are
> >>> separate, physical hosts in oVirt <= 3.5.1.
> >> Then why did it let me add the hosts as virt & gluster (default option
> >> 'both')
> >> during setup if it cannot be configured as such?
> > The "Both" in the --== OVIRT ENGINE CONFIGURATION ==-- section of the
> > engine-setup refers to if you will have "both" oVirt KVM Host clusters as
> > well
> > as Gluster Volume clusters.  "Both" does not mean that you will have the
> > Gluster storage daemon and KVM on the same host, as that configuration is
> > not
> > supported nor recommended.
> >
> > Hope that helps.
> 
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