[ovs-discuss] QoS "isRoot" rationale?

[Justin Pettit]

On Dec 9, 2013, at 1:16 PM, alagalah <alagalah at gmail.com> wrote:

> I was wondering if someone could explain the rationale behind the QoS Table having "isRoot"=True?
> 
> I understand why Queues has it, but wasn't sure as to why QoS ?
> 
> Is this simply to preserve it from garbage collection so QoS configurations can be re-used without losing them if the last reference in Port is removed?

In short, yes.  Here's an explanation from when the code went in that goes into a bit more detail (in the first paragraph):

	http://openvswitch.org/pipermail/dev/2011-March/007319.html

--Justin