[CentOS-virt] Lost a NIC on start

Wed Aug 3 13:07:55 UTC 2016
Nico Kadel-Garcia <nkadel at gmail.com>

On Tue, Aug 2, 2016 at 4:12 AM, Günther J. <gjn at gjn.priv.at> wrote:
> Hello,
> CentOS 7.2
> I have a big Problem with libvirt or KVM, my Virtual Hosts lost sometime a NIC
> on start.

What does "lose a NIC" mean? Does it mean that device doesn't show up
at all, and is not apparent with "/sbin/ifconfig -a" ? Or does it mean
that the device is not properly configured with IP address and
connected to the local network?

I've certainly noticed with various virtualization systems and CentOS
6 that sometimes DHCP doesn't get configured in the very short time
between the VM booting and the prompt being available. It always
recovers with a "/sbin/service network restart".

> I have configured 4 NIC on the Virtual host two passthru and 2 virtual, on
> start most time i lost a virtual NIC :-(
> So after a reboot I have to check always is all running and working.?
> with a "virsh reboot xxxx" in the most time it come back ?
> Have any a Idea why ?
> I found nothing in the Logs :-(.
> --
> mit freundlichen Grüßen / best regards,
>   Günther J. Niederwimmer
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