[Users] Error: "The following Network Interfaces were specified more than once:"

[Lior Vernia]

On 29/01/14 10:27, Alan Murrell wrote:
> I have noticed what seems to me to be a quirk, but wanted to see if this
> is correct behaviour, or perhaps my configuration.
> 
> I am running a test install ov oVirt 3.3.2 in an all-in-one install.  My
> test box only has one physical NIC, so I am using that for
> management/external network access, and I have create a dummy interface
> called "dummy_0" to be used for the VMs.
> 
> I created four networks, each assigned their own VLAN (I am wanted to
> simulate a "real-world"  .  I added the first network ("VLAN001") to
> "dummy_0" with no problem (I was able to save the configuration).  The
> system created the "dummy_0.1".
> 
> When I tried to add another network ("VLAN002") to "dummy_0" and save
> it, I got the following error:
> 
> --- START ---
> Error while executing action:
> 
> local_host:
> 
>     Cannot setup Networks. The following Network Interfaces were
> specified more than once: dummy_0.1.
> --- END ---
> 
> I found that in the "Setup Host Network" if I dragged "VLAN001" off
> dummy_0 to the right under "Required", and left "VLAN002" on "dummy_0",
> I could save it, and "VLAN001" appeared to remain active on the host. 
> Indeed, when I went back into "Setup Host Network", both "VLAN001" and
> "VLAN002" were showing up on "dummy_0".
> 
> However, if I highlight "VLAN002" under "Networks" and click on the
> "Hosts" tab, the "Network Interface" is showing a red down arrow,
> indicating it is not up.  The "Network Interface" for "VLAN001" is a
> green up arrow.  I have refreshed several times and at this point in
> time, have left it for almost thirty minutes, but it remains as a red
> down arrow.  The same is true for the other two networks I tried adding:
> I was able to add them as above, but they are also showing a red down
> arrow.
> 
> My questions:
> 
>   1.) Is doing what I had to do to add additional networks to an
> interface normal, or is it a quirk of using a dummy interface?
>   2.) Any ideas why my additional networks are showing a red down
> arrow?  Again, maybe a quirk of using a dummy interface?

It's a quirk of oVirt at the moment :) The interface state as shown in
the GUI currently has very little to do with whether there's
connectivity on a network. There should be an open RFE for connectivity
indicators, though I can't seem to find it at the moment.

What it SHOULD tell you is whether a link is up or down on the host
("administrative state"), but according to this bug it doesn't even do
that (will be fixed soon):
https://bugzilla.redhat.com/show_bug.cgi?id=1038741

> 
> I am going to leave it overnight and see what happens (maybe some
> background process needs to run??), but if that does not work, I am sure
> I can scrounge up another NIC in the next couple of days and install it
> into my test server to see if it does the same thing.
> 
> Thanks, in advance.
> 
> -Alan
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