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Re: [Rdo-list] SR-IOV on openstack: no valid host is found


Some update on this, although I can launch the VM and see the VF inside it, I have 2 problems

1º Sometimes I don't get ip from dhcp when I launch a new instance.

2º I cannot ping the other hosts inside the tenant network using sr-iov nics. If I use ovs nics it works. 

Anyone has experienced this issues?

Pedro Sousa

On Tue, Aug 25, 2015 at 12:02 PM, Pedro Sousa <pgsousa gmail com> wrote:

Anyone interested, I got it working using this procedure:

I'm using RDO/Juno Centos 7.1

My conf:

Controller/Network Node:


type_drivers = vlan
tenant_network_types = vlan
mechanism_drivers =openvswitch,sriovnicswitch

network_vlan_ranges =int-vlan:1440:1449

enable_security_group = True
firewall_driver = neutron.agent.firewall.NoopFirewallDriver


supported_pci_vendor_devs = 14e4:16af
agent_required = True

physical_device_mappings = int-vlan:p2p1

scheduler_available_filters = nova.scheduler.filters.all_filters
scheduler_available_filters = nova.scheduler.filters.pci_passthrough_filter.PciPassthroughFilter


ExecStart=/usr/bin/neutron-server --config-file /usr/share/neutron/neutron-dist.conf --config-file /etc/neutron/neutron.conf --config-file /etc/neutron/plugin.ini --config-file /etc/neutron/plugins/ml2/ml2_conf_sriov.ini --log-file /var/log/neutron/server.log

Compute Node:

I had to install ml2 plugin and sr-iov agent. Note, in the compute node using rdo packstack the ml2 plugin is not installed by default.

# yum install openstack-neutron-ml2 openstack-neutron-sriov-nic-agent


# Controls if neutron security group is enabled or not.
# It should be false when you use nova security group.
# enable_security_group = True
enable_security_group = True
firewall_driver = neutron.agent.firewall.NoopFirewallDriver

firewall_driver = neutron.agent.firewall.NoopFirewallDriver

physical_device_mappings = int-vlan:p2p1

ExecStart=/usr/bin/neutron-sriov-nic-agent --config-file /usr/share/neutron/neutron-dist.conf --config-file /etc/neutron/neutron.conf --config-file /etc/neutron/plugins/ml2/ml2_conf_sriov.ini --log-file /var/log/neutron/sriov-nic-agent.log

Pedro Sousa

On Tue, Aug 25, 2015 at 11:04 AM, Joe Talerico <jtaleric redhat com> wrote:

On Monday, August 17, 2015, שחם פרידנברג <shahamf gmail com> wrote:
Hey all,

I deployed openstack on DELL PowerEdge R620 installed with Centos 7.

SR-IOV is enabled in BIOS (both Virtualization Technology & SR-IOV).

Also, I added the needed kernel parameters and created virtual functions on 82599 Intel 10G NIC.

in nova.conf:

1. pci_passthrough_whitelist={"devname":"p2p1","physical_network":"sriovnet"}
2. scheduler_default_filters=RetryFilter,AvailabilityZoneFilter,RamFilter,ComputeFilter,ComputeCapabilitiesFilter,

Where did you supply the whitelist?

Also, after making the whitelist change did you check the nova-compute.log? It typically reports the PCI devices that can be used for instances. 


in ml2_conf.ini:

1. type_drivers = vxlan,vlan
2. mechanism_drivers =openvswitch,sriovnicswitch
3. network_vlan_ranges = sriovnet:80:90
in ml2_conf_sriov.ini:

1. supported_pci_vendor_devs = 8086:10ed
2. agent_required = False
in neutron-server.service:

1. ExecStart=/usr/bin/neutron-server --config-file /usr/share/neutron/neutron-dist.conf --config-dir /usr/share/neutron/server 
  --config-file /etc/neutron/neutron.conf --config-file /etc/neutron/plugin.ini 
  --config-file /etc/neutron/plugins/ml2/ml2_conf_sriov.ini --config-dir /etc/neutron/conf.d/neutron-server 
  --log-file /var/log/neutron/server.log
created Network based on physical network I defined (sriovnet), configured subnet and created direct type port.

When I creating an image (nova boot --flavor m1.large --image my_img --nic port-id=087ff574-fb14-47fd-82cb-454f176154ff test_sriov)   

I get the following error:

Traceback (most recent call last):

  File "/usr/lib/python2.7/site-packages/oslo_messaging/rpc/server.py", line 142, in inner
    return func(*args, **kwargs)

  File "/usr/lib/python2.7/site-packages/nova/scheduler/manager.py", line 86, in select_destinations

  File "/usr/lib/python2.7/site-packages/nova/scheduler/filter_scheduler.py", line 80, in select_destinations
    raise exception.NoValidHost(reason=reason)

NoValidHost: No valid host was found. There are not enough hosts available.

2015-08-18 04:28:22.886 17998 WARNING nova.scheduler.utils [req-5804960b-4614-4d0e-9a3d-a94964cf93f8 caf2b9813205455896e60c6d00c92b4d 4bd6b22041ef4123958a0f85c775b770 - - -] [instance: 470e16f9-002f-4ae4-82f4-17a83a93d860] Setting instance to ERROR state.

Any idea what might be the problem here?


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