http://openvswitch.org/support/dist-docs/ovsdb-tool.1.html
FILES The default db is /etc/openvswitch/conf.db. The default schema is /usr/share/openvswitch/vswitch.ovsschema. The help command also dis‐ plays these defaults.
so , if you want to backup the database of openvswitch , just copy this file
原文：http://www.cnblogs.com/juandx/p/4923715.html