On Fri, Jul 03, 2015 at 10:51:52AM +0200, NUNIN Roberto wrote:
Hi Dan, guys
Sorry for very late follow-up, but we had a lot of other topics to fix just before to go
back on this one.
We have tried another approach just to check if the kernel of the vdsm iso image used to
install the host could create the problem I've reported to the list.
Now we have reinstalled the same hardware with latest CentOS 7.1, fully updated.
Installed vdsm, then joined the oVirt cluster.
Well, we are observing the same behavior as before.
No DHCP offer is reaching the booting VM, and:
brctl showmacs <bridge_if> show us the booting vm mac-address
tcpdump -I <bridge_if> show us the dhcp offer coming from dhcp server.
The offer should be replicated to the tap device (vnetXXX). I assume
that it does not?
We have also tried to remove ANY firewall rule.
It isn't a PXE issue (gPXE 0.9.7) but only a DHCP process issue. Infact, if we
install a vm manually and assign a static IP, it works fine.
If we switch to dhcp, the vm don't get the dynamic one.
In this case, tcpdump on vm shows only the DHCP discovery, not the DHCP offer.
Any further suggestion/hint ?
Which bond mode are you using? I recently seen
https://bugzilla.redhat.com/show_bug.cgi?id=1230638#c22
closed as duplicate of
Bug 1094842 - Bonding modes 0, 5 and 6 should be avoided for VM
networks