From 2dec045cdd05265214ac757f915e7b59458e6e7f Mon Sep 17 00:00:00 2001
From: David Vallee Delisle <dvd@redhat.com>
Date: Wed, 28 Jul 2021 11:22:30 -0400
Subject: [PATCH] Configure vhost-postcopy-support

Libvirt PostCopy helps with live-migration. For postcopy to work with
vhost interface, we need to configure ovs with other_config:vhost-postcopy-support=true

Related: https://bugzilla.redhat.com/show_bug.cgi?id=1986567
Change-Id: If1239369b9c650ab62be58b4ae125cff120fa49a
---
 .../roles/tripleo_ovs_dpdk/defaults/main.yml   |  1 +
 .../roles/tripleo_ovs_dpdk/tasks/config.yml    | 18 ++++++++++++++++++
 2 files changed, 19 insertions(+)

diff --git a/tripleo_ansible/roles/tripleo_ovs_dpdk/defaults/main.yml b/tripleo_ansible/roles/tripleo_ovs_dpdk/defaults/main.yml
index d69a75504..fd3782295 100644
--- a/tripleo_ansible/roles/tripleo_ovs_dpdk/defaults/main.yml
+++ b/tripleo_ansible/roles/tripleo_ovs_dpdk/defaults/main.yml
@@ -32,3 +32,4 @@ tripleo_ovs_dpdk_pmd_auto_lb: false
 tripleo_ovs_dpdk_pmd_load_threshold: ""
 tripleo_ovs_dpdk_pmd_improvement_threshold: ""
 tripleo_ovs_dpdk_pmd_rebal_interval: ""
+tripleo_ovs_dpdk_vhost_postcopy_support: false
diff --git a/tripleo_ansible/roles/tripleo_ovs_dpdk/tasks/config.yml b/tripleo_ansible/roles/tripleo_ovs_dpdk/tasks/config.yml
index 7b593620b..4da4c0620 100644
--- a/tripleo_ansible/roles/tripleo_ovs_dpdk/tasks/config.yml
+++ b/tripleo_ansible/roles/tripleo_ovs_dpdk/tasks/config.yml
@@ -144,6 +144,24 @@
     key: userspace-tso-enable
   when: not tripleo_ovs_dpdk_enable_tso|bool
 
+- name: Enable vhost-postcopy-support
+  openvswitch_db:
+    table: open_vswitch
+    record: .
+    col: other_config
+    key: vhost-postcopy-support
+    value: "{{ tripleo_ovs_dpdk_vhost_postcopy_support }}"
+  when: tripleo_ovs_dpdk_vhost_postcopy_support|bool
+
+- name: Disable vhost-postcopy-support
+  openvswitch_db:
+    state: absent
+    table: open_vswitch
+    record: .
+    col: other_config
+    key: vhost-postcopy-support
+  when: not tripleo_ovs_dpdk_vhost_postcopy_support|bool
+
 - name: Enable DPDK OVS PMD Auto Load Balance
   openvswitch_db:
     table: open_vswitch