[Users] Question about network card order

Wed Oct 3 14:18:34 UTC 2012

Sur :)

2012/10/3 Simon Grinberg <simon at redhat.com>

>
>
> ------------------------------
>
> *From: *"Kevin Maziere Aubry" <kevin.maziere at alterway.fr>
> *To: *"Antoni Segura Puimedon" <asegurap at redhat.com>
> *Cc: *"Michael Tsirkin" <mtsirkin at redhat.com>, "Dor Laor" <
> dlaor at redhat.com>, users at ovirt.org
> *Sent: *Wednesday, October 3, 2012 3:02:47 PM
>
> *Subject: *Re: [Users] Question about network card order
>
> The mac adress are unknown until the creation of the VM, so udev won't
> help here :(
>
>
> But after the creation of the VM and before the first run you have the
> option to edit/view those MAC addresses.
> Give whatever you want before the first run.
>
>
> 2012/10/3 Antoni Segura Puimedon <asegurap at redhat.com>
>
>>
>>
>> ----- Original Message -----
>> > From: "Kevin Maziere Aubry" <kevin.maziere at alterway.fr>
>> > To: "Igor Lvovsky" <ilvovsky at redhat.com>
>> > Cc: "Dor Laor" <dlaor at redhat.com>, "Michael Tsirkin" <
>> mtsirkin at redhat.com>, users at ovirt.org
>> > Sent: Wednesday, October 3, 2012 8:35:04 AM
>> > Subject: Re: [Users] Question about network card order
>> >
>> >
>> > Thanks for your reply.
>> >
>> >
>> >
>> > 2012/10/3 Igor Lvovsky < ilvovsky at redhat.com >
>> >
>> >
>> >
>> >
>> >
>> > ----- Original Message -----
>> > > From: "Kevin Maziere Aubry" < kevin.maziere at alterway.fr >
>> > > To: users at ovirt.org
>> > > Sent: Wednesday, October 3, 2012 9:58:44 AM
>> > > Subject: [Users] Question about network card order
>> > >
>> > >
>> > > Hello
>> > >
>> > >
>> > > My first email on the mailing, I hope the first one of a longue
>> > > serie.
>> > >
>> >
>> > Welcome to community :)
>> >
>> >
>> > >
>> > > The email concerns a Network Card order issue for which I like to
>> > > report a have your advises.
>> > >
>> > >
>> > > I've made a template which contains 2 network cards, Each one
>> > > bridge
>> > > on different vlan network.
>> > > When I create a VM from this template, the network card mac address
>> > > assignation is random... so that by default my fedora assign eth0
>> > > to
>> > > the smallest mac address, and so on for eth1/eth2 ...
>> > >
>> > >
>> > > But no way to define network card order in template, so that
>> > > sometime
>> > > the smallest mac address is on eth0, sometime on eth1 (and in fact
>> > > more often on eth1), sometime my VM works, sometime I have to
>> > > destroy and recreate network interfaces.
>> > >
>> > >
>> >
>> > Unfortunately it's a known issue that related mostly to guest kernel
>> > rather than RHEV-M.
>> > This is not related to order of NICs during VM start, because RHEV-M
>> > keep the MAC assignment
>> > and even PCI address assignment same over VM reboots.
>> >
>> > The real reason hidden somewhere deep in kernel/udev behaviour.
>> > We need to understand why 2 NICs with same MAC addresses and same PCI
>> > addresses may get different names (eth0/eth1)
>> > over machine reboot.
>> >
>> > Michael, any ideas?
>> >
>> >
>> > > Is there a workaround or anything else ?
>> > >
>> >
>> > No, I am not aware of any workaround
>>
>> Wouldn't it be possible to write some matching rules in:
>>     /etc/udev/rules.d/70-persistent-net.rules
>>
>> for your template so you would have it consistent. Mind that you should
>> not rename to the kernel eth namespace.
>>
>> Best,
>>
>> Toni
>>
>> >
>> >
>> > Regards,
>> > Igor
>> >
>> >
>> > >
>> > > Thanks
>> > >
>> > >
>> > > Kévin
>> > >
>> > >
>> > > --
>> > >
>> > > Kevin Mazière
>> > > Responsable Infrastructure
>> > > Alter Way – Hosting
>> > > 1 rue Royal - 227 Bureaux de la Colline
>> > > 92213 Saint-Cloud Cedex
>> > > Tél : +33 (0)1 41 16 38 41
>> > > Mob : +33 (0)7 62 55 57 05
>> > > http://www.alterway.fr
>> > >
>> > > _______________________________________________
>> > > Users mailing list
>> > > Users at ovirt.org
>> > > http://lists.ovirt.org/mailman/listinfo/users
>> > >
>> >
>> >
>> >
>> >
>> > --
>> >
>> > Kevin Mazière
>> > Responsable Infrastructure
>> > Alter Way – Hosting
>> > 1 rue Royal - 227 Bureaux de la Colline
>> > 92213 Saint-Cloud Cedex
>> > Tél : +33 (0)1 41 16 38 41
>> > Mob : +33 (0)7 62 55 57 05
>> > http://www.alterway.fr
>> >
>> > _______________________________________________
>> > Users mailing list
>> > Users at ovirt.org
>> > http://lists.ovirt.org/mailman/listinfo/users
>> >
>>
>
>
>
> --
>
> Kevin Mazière
> Responsable Infrastructure
> Alter Way – Hosting
>  1 rue Royal - 227 Bureaux de la Colline
> 92213 Saint-Cloud Cedex
> Tél : +33 (0)1 41 16 38 41
> Mob : +33 (0)7 62 55 57 05
>  http://www.alterway.fr
>
> _______________________________________________
> Users mailing list
> Users at ovirt.org
> http://lists.ovirt.org/mailman/listinfo/users
>
>
>


-- 

Kevin Mazière
Responsable Infrastructure
Alter Way – Hosting
 1 rue Royal - 227 Bureaux de la Colline
92213 Saint-Cloud Cedex
Tél : +33 (0)1 41 16 38 41
Mob : +33 (0)7 62 55 57 05
 http://www.alterway.fr
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