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

Sun Jan 10 15:20:12 UTC 2016

Hi all,

Sorry to pest, but could somebody else help me out with the issue below?

I guess Simone is busy or away.

Thank you for any ideas / hints / explanations.

Kind regards,

—
Christophe

On 04 Jan 2016, at 22:19, Christophe TREFOIS <christophe.trefois at uni.lu<mailto:christophe.trefois at uni.lu>> wrote:

Hi Simone,
Hi all,

As additional info, currently my network looks like below and I would like to switch from em1 to p4p1 exclusively, or perhaps use em1 as some sort of backup or for the management?

2. Also, I’m not sure I understand fundamentally the differences between the different Network types (VM, Display, Migration). But that’s more for insotmation.

Thank you for any pointers on this,

[root at bio2 ~]# ifconfig
em1: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>  mtu 1500
        ether 90:b1:1c:43:49:6f  txqueuelen 1000  (Ethernet)
        RX packets 1472870027  bytes 1331937755845 (1.2 TiB)
        RX errors 0  dropped 0  overruns 0  frame 0
        TX packets 3357243709  bytes 4587955996714 (4.1 TiB)
        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0
        device interrupt 16

ovirtmgmt: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>  mtu 1500
        inet 10.79.2.2  netmask 255.255.0.0  broadcast 10.79.255.255
        inet6 fe80::92b1:1cff:fe43:496f  prefixlen 64  scopeid 0x20<link>
        ether 90:b1:1c:43:49:6f  txqueuelen 0  (Ethernet)
        RX packets 316189539  bytes 160942658695 (149.8 GiB)
        RX errors 0  dropped 8  overruns 0  frame 0
        TX packets 302508924  bytes 2879819101719 (2.6 TiB)
        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0

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
        TX packets 25477  bytes 2190382 (2.0 MiB)
        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0

[root at bio2 ~]# route
Kernel IP routing table
Destination     Gateway         Genmask         Flags Metric Ref    Use Iface
default         10.79.0.1       0.0.0.0         UG    0      0        0 ovirtmgmt
10.79.0.0       0.0.0.0         255.255.0.0     U     0      0        0 ovirtmgmt
link-local      0.0.0.0         255.255.0.0     U     1005   0        0 p4p1
link-local      0.0.0.0         255.255.0.0     U     1008   0        0 ovirtmgmt

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

UNIVERSITÉ DU LUXEMBOURG

LUXEMBOURG CENTRE FOR SYSTEMS BIOMEDICINE
Campus Belval | House of Biomedicine
6, avenue du Swing
L-4367 Belvaux
T: +352 46 66 44 6124
F: +352 46 66 44 6949
http://www.uni.lu/lcsb

[Facebook]<https://www.facebook.com/trefex>  [Twitter] <https://twitter.com/Trefex>   [Google Plus] <https://plus.google.com/+ChristopheTrefois/>   [Linkedin] <https://www.linkedin.com/in/trefoischristophe>   [skype] <http://skype:Trefex?call>

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On 25 Nov 2015, at 12:20, Simone Tiraboschi <stirabos at redhat.com<mailto:stirabos at redhat.com>> wrote:

On Mon, Nov 23, 2015 at 7:29 PM, Christophe TREFOIS <christophe.trefois at uni.lu<mailto:christophe.trefois at uni.lu>> wrote:
Dear all,

I have currently a data center with two clusters and each cluster had 1 host.

On one of the hosts, I now enabled 10 GbE NIC called p4p1. Currently everything is going over a 1 GbE NIC called em1 (ovirtmgmt).

My question now is, how I could add my 10 GbE NIC to the setup for instance to use for transferring data during transmissions to export domain or to simply replace the 1 GbE?

You can simply edit the network bindings from the engine:
http://www.ovirt.org/OVirt_Administration_Guide#Editing_Host_Network_Interfaces_and_Assigning_Logical_Networks_to_Hosts

Is up to you to choose if you want just to use the 10 GbE NIC or if you prefer to create two distinct logical networks or an active-backup bond of the two interfaces.

I prefer little downtime (eg only temp network loss), but a full downtime (shutting down) could be acceptable.

Thank you for any pointers or starting points you could provide,

Kind regards,

—
Christophe
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