AFAIK, udev make the NIC name be stable by the MAC address. So when I haven't assigned a VF or NetworkCard to the VM,
how can I force the name in the guest to 'eth0' ?
best regard,
qinguan
2011/5/8 Richard W.M. Jones <rjones@xxxxxxxxxx>
On Sun, May 08, 2011 at 10:56:54AM +0800, guan qin wrote:AFAIK the guest should always see "eth0", so this shouldn't be any
> The second solution you mentioned may be difficult , because when I assign
> the ethX to the VM, the X in the 'ethX' is random (the 'X' in the host may
> be different in the VM),I don't know it before I boot the VM . so maybe I
> couldn't edit the guest correctly before booting VM.
problem. If not, write udev rule(s) in the guest to force the name to
be stable.
It seems that for SR-IOV, MAC addresses are assigned to VFs randomly
> The first solution :
> The network card's MAC address I can know and assign an fixed IP in
> advance, but for the VFs , before I create the VF by "modprobe
> igb/ixgbe
> max_vfs=num1,num2" ,I couldn't know the MAC address before either,the MAC
> address generated randomly too.
> So maybe I should edit the DHCP server configure file after creating the
> VFs.
by the kernel. It should be possible to read out the VF using (eg)
libvirt before the VM has booted (if not, it would be a bug). I think
you can also assign fixed MAC addresses to VFs in advance if that
would be simpler. However I've not really used SR-IOV in anger so
this may be wrong.
virt-top is 'top' for virtual machines. Tiny program with many
powerful monitoring features, net stats, disk stats, logging, etc.
http://et.redhat.com/~rjones/virt-top
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