predefine interfaces by MAC with udev?
On Feb 8, 2008 9:55 AM, Jordi Pujol <jordipujolp at gmail.com> wrote:
> Hello Chris and list,
>
> Sorry, I have supposed that but I don't have tested the naming of the
> interfaces in live-initramfs,
> a comment,
> I have seen that live-initramfs only activates the network interfaces when
> it's starting through the network, otherwise the interfaces are activated
> later, when the main OS starts,
> so writing udev rules in the initrd file only could be useful in this case,
Hi,
Well, I've got some more data (changed hardware too).
Using a pc with just on nic (eth0):
I include an incorrect mac in the chroot
udev/rules.d/z25_persistent-net.rules for eth0
SUBSYSTEM=="net", DRIVERS=="?*", ATTRS{address}=="bad:mac:address", NAME="eth0"
This boots fine. Strangely, the udev of the main os sees the bad:mac
and puts correct mac to eth1. But if I do 'ip link sh' I can see that
the correct mac is on eth0.
So it seems that initramfs ignores the udev rules as you suggested Jordi.
Then I continued with 2 nics and I'm _almost_ back to when I started. :(
I can boot successfully 100% of the time from one nic, and
I get 100% failures booting from the second nic (fails at Begin:
Mounting root file system)
So, that reminds me of the days before udev, when the eth* order was
determined by the pci slot.
Any ideas?
Thanks.
Chris.
>
> Regards,
>
> Jordi
>
> El Friday 08 February 2008 09:13:35 Chris Fanning va escriure:
>
> > Hi,
> >
> > > > that can solved with only one initrd
> > > > we can include a list with all the network cards MACs in the servers,
> > > > because all the network cards have different MAC, ? :)
> > >
> > > ok. I understand now. That sound's a lot easier than what I've been
> > > trying to do today. I would only need to update the initrd when I
> > > include a new server, right?
> >
> > No go :(
> >
> > My /etc/udev/rules.d/z25_persistent-net.rules looks like this
> > SUBSYSTEM=="net", DRIVERS=="?*", ATTRS{address}=="44:4d:50:e1:f1:4e",
> > NAME="eth0"
> > And when I break=top, I can see that it is present. So it's there on boot.
> >
> > But the interfaces are still getting mixed up.
> >
> > Does that make any sense? Maybe my hardware is faulty?
> >
> > Thanks.
> > Chris.
>
>
>
>
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