[Users] Question about network card order

[Simon Grinberg]

----- Original Message -----

> 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
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