Open Stack

Hi all

I want to boot VM from controller node onto the compute node using
devstack.All my services such as nova,q-agt,nova-compute,neutron,etc are
running properly both on compute node as well on the controller node.I'm
also able to boot VMs on controller node from the openstack dashvoard
.However issue is coming when I'm booting VM from controller node onto
compute node.
Following is the error in the nova-compute logs when I'm trying to boot VM
on compute node from controller node....


2014-04-30 05:10:22.452 17049 TRACE nova.openstack.common.rpc.amqp     if
ret == -1: raise libvirtError ('virDomainCreateWithFlags() failed',
dom=self)
2014-04-30 05:10:22.452 17049 TRACE nova.openstack.common.rpc.amqp
libvirtError: Error while building firewall: Some rules could not be
created for interface tap74d2ff08-7f: Failure to execute command '$EBT -t
nat -A libvirt-J-tap74d2ff08-7f  -j J-tap74d2ff08-7f-mac' : 'Unable to
update the kernel. Two possible causes:
2014-04-30 05:10:22.452 17049 TRACE nova.openstack.common.rpc.amqp 1.
Multiple ebtables programs were executing simultaneously. The ebtables
2014-04-30 05:10:22.452 17049 TRACE nova.openstack.common.rpc.amqp
userspace tool doesn't by default support multiple ebtables programs
running
2014-04-30 05:10:22.452 17049 TRACE nova.openstack.common.rpc.amqp
concurrently. The ebtables option --concurrent or a tool like flock can be
2014-04-30 05:10:22.452 17049 TRACE nova.openstack.common.rpc.amqp    used
to support concurrent scripts that update the ebtables kernel tables.
2014-04-30 05:10:22.452 17049 TRACE nova.openstack.common.rpc.amqp 2. The
kernel doesn't support a certain ebtables extension, consider
2014-04-30 05:10:22.452 17049 TRACE nova.openstack.common.rpc.amqp
recompiling your kernel or insmod the extension.
2014-04-30 05:10:22.452 17049 TRACE nova.openstack.common.rpc.amqp .'.
2014-04-30 05:10:22.452 17049 TRACE nova.openstack.common.rpc.amqp
2014-04-30 05:10:22.452 17049 TRACE nova.openstack.common.rpc.amqp
2014-04-30 05:10:29.066 17049 DEBUG nova.openstack.common.rpc.amqp [-]
Making synchronous call on conductor ... multicall /opt/stack/nova/nova/o

>From the logs it appears that the command $EBT -t nat -A
libvirt-J-tap74d2ff08-7f  -j J-tap74d2ff08-7f-mac is not able to update the
kernel with the ebtables rules.I have also enabled the ebtables modules(*)
in my kernel.

Please help me regarding this.
Also is there any other way of booting the VM without updating the rules in
kernel .

Thanks
Abhisehk Jain
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