[Engine-devel] Network Quality of Service 3.3 - Feature design

[Doron Fediuck]

----- Original Message -----
> From: "Livnat Peer" <lpeer at redhat.com>
> To: "Ofri Masad" <omasad at redhat.com>
> Cc: "engine-devel" <engine-devel at ovirt.org>
> Sent: Tuesday, June 4, 2013 12:02:35 PM
> Subject: Re: [Engine-devel] Network Quality of Service 3.3 - Feature design
> 
> On 06/02/2013 09:58 AM, Ofri Masad wrote:
> > Hi all,
> > 
> > A new Feature page for "Network Quality of Service" feature was published.
> > 
> > http://www.ovirt.org/Features/Design/Network_QoS
> > 
> > You are more than welcome to share you thoughts and insights.
> > 
> 
> 
> Hi Ofri,
> 
> Here is another suggestion for you to consider, this suggestion is
> realted only to QoS on the VNIC level -
> 
> Introducing a new entity - VNIC Profile.
> The VNIC profile would include all the properties of a VNIC:
>  - network,
>  - Qos,
>  - Port mirroring,
>  - custom properties
> 
> From now on a user would choose a VNIC profile when he defines a VNIC
> (instead of choosing a network and defining properties directly on the VNIC)
> 
> A network could have multiple profiles defined on it.
> 
> A User would need permissions to use a profile instead of the current
> state that we require permission to use a network.
> 
> The benefits of this approach :
> 
> 1. Limiting the user to a specific QoS on a network is easy you give the
> user permission to use a specific profile.
> 
> 2. A user can add a new VNIC but he would be limited to QoS defined on
> the profile he is able to use (which eliminates the problem that a user
> can add a VNIC to it's VM but won't get any bandwidth limitations).
> 
> 3. An administrator does not add VNIC QoS properties on the network
> entity (to serve as defaults) which are not relevant for non-VM network.
> 
> 4. The network admin who creates the VNIC profile is also the one who
> can configure the QoS to that Network.
> 
> 5. The separation between user portal and admin portal is very clear, in
> user portal we expose only the profile name and in the admin portal a
> user can view the profile details.
> 
> 6. We would leave custom properties also on the VNIC level not only the
> profile level so a user can send VM specific data.
> 
> 7.I can also describe upgrade path but maybe we should discuss the
> general concept before diving into the details.
> 

Hi Livnat,
This design creates a new feature of network profile, which has QoS
included in it, so it's bigger the the original intention. Having that
said, I agree with the concept as we need to take a more holistic
approach which considers other areas of the system, such as SLA policies
and instance types.

So in this view I'll just add that going forward the QoS element of the
profile will be a reference to a policy entity which will include network
QoS as well as other QoS elements.

At this point we're going back to the drawing board to update the design
and will publish an update asap.

Doron

> 
> Livnat
> 
> 
> 
> > Thanks,
> > Ofri.