usr_share_openvswitch_scripts_ovs-systemd-reload

#! /bin/sh

# Copyright (c) 2017 Red Hat, Inc.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at:
#
#     http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.

# Save flows
bridges=$(ovs-vsctl -- --real list-br)
flows=$(/usr/share/openvswitch/scripts/ovs-save save-flows $bridges)

# Restart the database first, since a large database may take a
# while to load, and we want to minimize forwarding disruption.
systemctl --job-mode=ignore-dependencies restart ovsdb-server

# Stop ovs-vswitchd.
systemctl --job-mode=ignore-dependencies stop ovs-vswitchd

# Start vswitchd by asking it to wait till flow restore is finished.
ovs-vsctl --no-wait set open_vswitch . other_config:flow-restore-wait=true
systemctl --job-mode=ignore-dependencies start ovs-vswitchd

# Restore saved flows and inform vswitchd that we are done.
eval "$flows"
ovs-vsctl --if-exists remove open_vswitch . other_config flow-restore-wait=true

exit 0