[ovirt-users] Network Interface order changed after reboot

[ovirt at timmi.org]

Hi Edy,

please find some config files below. I did the interface config only 
through the oVirt GUI.

I mean by reordering that after every reboot some interfaces are not the 
same as before. That means I need to change the cables after reboot.

[root at lxedna ~]# cat /etc/sysconfig/network-scripts/ifcfg-eth0
# Generated by VDSM version 4.17.28-1.el7
DEVICE=eth0
ONBOOT=yes
BOOTPROTO=dhcp
MTU=1500
DEFROUTE=yes
NM_CONTROLLED=no
IPV6INIT=no
[root at lxedna ~]# cat /etc/sysconfig/network-scripts/ifcfg-eth1
# Generated by VDSM version 4.17.23-0.el7.centos
DEVICE=eth1
BRIDGE=Test-LAN-SW1
ONBOOT=yes
MTU=1500
NM_CONTROLLED=no
IPV6INIT=no
[root at lxedna ~]# cat /etc/sysconfig/network-scripts/ifcfg-eth2
# Generated by VDSM version 4.17.23-0.el7.centos
DEVICE=eth2
BRIDGE=PC-LAN
ONBOOT=yes
MTU=1500
NM_CONTROLLED=no
IPV6INIT=no

Best regards
Christoph

Am 26.06.2016 um 14:51 schrieb Edward Haas:
>
>
> On Thu, Jun 23, 2016 at 3:49 PM, <ovirt at timmi.org 
> <mailto:ovirt at timmi.org>> wrote:
>
>     Hi List,
>
>     I have two nodes (running CentOS 7) and the network interface
>     order changed for some interfaces after every reboot.
>
>     The configurations are done through the oVirt GUI. So the
>     ifcfg-ethX scripts are configured automatically by VDSM.
>
>     Is there any option to get this configured to be stable?
>
>     Best regards and thank you
>
>     Christoph
>
>     _______________________________________________
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>     Users at ovirt.org <mailto:Users at ovirt.org>
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>
>
> Hi Christoph,
>
> VDSM indeed edits and takes ownership of the interfaces for the 
> networks it manages.
> However, editing the ifcfg files should not change anything in the 
> order of the devices, unless it was originally set
> in an unsupported fashion. An ifcfg file is bound to a specific device 
> name and I'm not familiar to device names
> floating around randomly.
> Perhaps you should elaborate more on what it means by 'order changed'.
>
> Here is an example of a setup we do not support (pre adding the host 
> to Engine):
> The initial ifcfg file name: ifcfg-eth0
> The initial ifcfg file content: DEVICE="eth1"
> In this configuration, the name of the ifcfg file is inconsistent with 
> the name of the device it represents.
> VDSM expects them to me in sync.
>
> Please provide the ifcfg files before and after you add the host to 
> Engine.
>
> Thanks,
> Edy.
>

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