[ovirt-users] Bizzare oVirt network problem

[FERNANDO FREDIANI]

Hello Pavel

What you mean by another oVirt instance ? In one Datacenter it has 2 
different clusters (or Datacenter in oVirt way of orrganizing things), 
but in the other Datacenter the oVirt Node is standlone.

Let me know.

Fernando


On 12/07/2017 16:49, Pavel Gashev wrote:
>
> Fernando,
>
> It looks like you have another oVirt instance in the same network 
> segment(s). Don’t you?
>
> *From: *<users-bounces at ovirt.org> on behalf of FERNANDO FREDIANI 
> <fernando.frediani at upx.com>
> *Date: *Wednesday, 12 July 2017 at 16:21
> *To: *"users at ovirt.org" <users at ovirt.org>
> *Subject: *[ovirt-users] Bizzare oVirt network problem
>
> Hello.
>
> I am facing a pretty bizzare problem in two of my Nodes running oVirt. 
> A given VM running a few hundred Mbps of traffic simply stops passing 
> traffic and only recovers after a reboot. Checking the bridge with 
> 'brctl showmacs BRIDGE' I see the VM's MAC address missing during this 
> event.
>
> It seems the bridge simply unlearn the VM's mac address which only 
> returns when the VM is rebooted.
> This problems happened in two different Nodes running in different 
> hardware, in different datacenter, in different network architecture, 
> different switch vendors and different bonding modes.
>
> The main differences these Nodes have compared to others I have and 
> which don't show this problem are:
>     - The CentOS 7 installed is a Minimal installation instead of oVirt-NG
>     - The Kernel used is 4.12 (elrepo) instead of the default 3.10
>     - The ovirtmgmt network is used also for the Virtual Machine 
> showing this problem.
>
> Has anyone have any idea if it may have anything to do with oVirt (any 
> filters) or any of the components different from a oVirt-NG installation ?
>
> Thanks
> Fernando
>

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