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authorahothan <ahothan@cisco.com>2017-08-04 17:26:33 -0700
committerahothan <ahothan@cisco.com>2017-08-04 17:27:41 -0700
commit2d66234fe3b8b3e104e63218b5120a35ca400ea5 (patch)
tree4290c61fa68b09c83a2983ff742f8f48bf53d231 /docs/testing
parent0036098e46e16c9ae5b795b108a5b9566c02906b (diff)
Add support for multiple physnets for sr-iov
Update config plugin config Add readable error message on exception Change-Id: Ie22de349582abc34d7e62570118022463f835d64 Signed-off-by: ahothan <ahothan@cisco.com>
Diffstat (limited to 'docs/testing')
-rw-r--r--docs/testing/index.rst2
-rw-r--r--docs/testing/user/userguide/index.rst1
-rw-r--r--docs/testing/user/userguide/sriov.rst60
3 files changed, 62 insertions, 1 deletions
diff --git a/docs/testing/index.rst b/docs/testing/index.rst
index 0b55d48..b795e6b 100644
--- a/docs/testing/index.rst
+++ b/docs/testing/index.rst
@@ -4,7 +4,7 @@
.. (c) Cisco Systems, Inc
.. toctree::
- :maxdepth: 1
+ :maxdepth: 2
developer/devguide/index
user/configguide/index
diff --git a/docs/testing/user/userguide/index.rst b/docs/testing/user/userguide/index.rst
index a7eb1e9..fa9d7d0 100644
--- a/docs/testing/user/userguide/index.rst
+++ b/docs/testing/user/userguide/index.rst
@@ -23,6 +23,7 @@ Table of Content
installation
examples
advanced
+ sriov
server
faq
diff --git a/docs/testing/user/userguide/sriov.rst b/docs/testing/user/userguide/sriov.rst
new file mode 100644
index 0000000..c63a6d7
--- /dev/null
+++ b/docs/testing/user/userguide/sriov.rst
@@ -0,0 +1,60 @@
+.. This work is licensed under a Creative Commons Attribution 4.0 International License.
+.. SPDX-License-Identifier: CC-BY-4.0
+.. (c) Cisco Systems, Inc
+
+
+Testing SR-IOV
+==============
+
+NFVbench supports SR-IOV with the PVP and PVVP packet flows. SR-IOV support is not applicable for external chains since the networks have to be setup externally (and can themselves be pre-set to use SR-IOV or not).
+
+Pre-requisites
+--------------
+To test SR-IOV you need to have compute nodes configured to support one or more SR-IOV interfaces (also knows as PF or physical function) and you need OpenStack to be configured to support SR-IOV.
+You will also need to know:
+- the name of the physical networks associated to your SR-IOV interfaces (this is a configuration in Nova compute)
+- the VLAN range that can be used on the switch ports that are wired to the SR-IOV ports. Such switch ports are normally configured in trunk mode with a range of VLAN ids enabled on that port
+
+For example, in the case of 2 SR-IOV ports per compute node, 2 physical networks are generally configured in OpenStack with a distinct name. The VLAN range to use is is also allocated and reserved by the network administrator and in coordination with the corresponding top of rack switch port configuration.
+
+
+Configuration
+-------------
+To enable SR-IOV test, you will need to provide the following configuration options to NFVbench (in the configuration file).
+This example instructs NFVbench to create the left and right networks of a PVP packet flow to run on 2 SRIOV ports named "phys_sriov0" and "phys_sriov1" using resp. segmentation_id 2000 and 2001:
+
+.. code-block:: bash
+
+ internal_networks:
+ left:
+ segmentation_id: 2000
+ physical_network: phys_sriov0
+ right:
+ segmentation_id: 2001
+ physical_network: phys_sriov1
+
+The segmentation ID fields must be different.
+In the case of PVVP, the middle network also needs to be provisioned properly.
+The same physical network can also be shared by the virtual networks but with different segmentation IDs.
+
+
+NIC NUMA socket placement and flavors
+-------------------------------------
+If the 2 selected ports reside on NICs that are on different NUMA sockets, you will need to explicitly tell Nova to use 2 numa nodes in the flavor used for the VMs in order to satisfy the filters, for example:
+
+.. code-block:: bash
+
+ flavor:
+ # Number of vCPUs for the flavor
+ vcpus: 2
+ # Memory for the flavor in MB
+ ram: 8192
+ # Size of local disk in GB
+ disk: 0
+ extra_specs:
+ "hw:cpu_policy": dedicated
+ "hw:mem_page_size": large
+ "hw:numa_nodes": 2
+
+Failure to do so might cause the VM creation to fail with the Nova error "Instance creation error: Insufficient compute resources: Requested instance NUMA topology together with requested PCI devices cannot fit the given host NUMA topology."
+