[ovirt-users] How to add faster NIC to oVirt cluser / host?

[Christophe TREFOIS]

I’m a bit weary in re-installing that host as it runs the engine on a shared storage locally.

I’ll try to figure out the networking errors first.

Thanks,

From: Yaniv Kaul [mailto:ykaul at redhat.com]
Sent: dimanche 10 janvier 2016 19:03
To: Christophe TREFOIS <christophe.trefois at uni.lu>
Cc: Simone Tiraboschi <stirabos at redhat.com>; users at ovirt.org
Subject: Re: [ovirt-users] How to add faster NIC to oVirt cluser / host?

On Sun, Jan 10, 2016 at 6:11 PM, Christophe TREFOIS <christophe.trefois at uni.lu<mailto:christophe.trefois at uni.lu>> wrote:
Hi Yaniv,

In the best case everything, I would like to replace the 1G with 10G.
The reason is that both NICs are on the same subnet, which would create problems then with both active?

Linux isn't very happy when two NICs are on the same subnet, AFAIK, so indeed, I would not recommend it.


My guess is the RX errors are due to the missing gateway?

No, those are Ethernet level issues.


Currently I can’t reach the p4p1 NIC since the gateway goes through the 1G NIC.

Makes sense. If possible, I'd change this (routing-wise) and just reinstall the host from the oVirt management. That would be the simplest approach.
(but again, I'd do it only after making sure the network is error free).
Y.


Cheers,

Dr Christophe Trefois, Dipl.-Ing.
Technical Specialist / Post-Doc

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On 10 Jan 2016, at 16:42, Yaniv Kaul <ykaul at redhat.com<mailto:ykaul at redhat.com>> wrote:


On Mon, Jan 4, 2016 at 11:19 PM, Christophe TREFOIS <christophe.trefois at uni.lu<mailto:christophe.trefois at uni.lu>> wrote:
p4p1: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>  mtu 1500
        inet 10.79.2.254  netmask 255.255.0.0  broadcast 10.79.255.255
        inet6 fe80::a236:9fff:fe16:b68c  prefixlen 64  scopeid 0x20<link>
        ether a0:36:9f:16:b6:8c  txqueuelen 1000  (Ethernet)
        RX packets 2901163  bytes 2803302669 (2.6 GiB)
        RX errors 35242  dropped 0  overruns 0  frame 35242

Before you move, I suggest to look at the errors that you have here. On the 1G you have transferred far more data without errors.

What would you like to move to the 10g? The storage, migration, VM networks?
Y.



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