Issue

• The database has both utf8_general_ci and utf8_unicode_ci collation values.
• When running a dry run to test the upgrade from OSP 6 to 7, the following error is seen from the database:

+ openstack-db --service neutron --update
Traceback (most recent call last):
  File "/bin/neutron-db-manage", line 10, in <module>
    sys.exit(main())
  File "/usr/lib/python2.7/site-packages/neutron/db/migration/cli.py", line 238, in main
    CONF.command.func(config, CONF.command.name)
  File "/usr/lib/python2.7/site-packages/neutron/db/migration/cli.py", line 106, in do_upgrade
    do_alembic_command(config, cmd, revision, sql=CONF.command.sql)
  File "/usr/lib/python2.7/site-packages/neutron/db/migration/cli.py", line 72, in do_alembic_command
    getattr(alembic_command, cmd)(config, *args, **kwargs)
  File "/usr/lib/python2.7/site-packages/alembic/command.py", line 165, in upgrade
    script.run_env()
  File "/usr/lib/python2.7/site-packages/alembic/script.py", line 382, in run_env
    util.load_python_file(self.dir, 'env.py')
  File "/usr/lib/python2.7/site-packages/alembic/util.py", line 242, in load_python_file
    module = load_module_py(module_id, path)
  File "/usr/lib/python2.7/site-packages/alembic/compat.py", line 79, in load_module_py
    mod = imp.load_source(module_id, path, fp)
  File "/usr/lib/python2.7/site-packages/neutron/db/migration/alembic_migrations/env.py", line 109, in <module>
    run_migrations_online()
  File "/usr/lib/python2.7/site-packages/neutron/db/migration/alembic_migrations/env.py", line 100, in run_migrations_online
    context.run_migrations()
  File "<string>", line 7, in run_migrations
  File "/usr/lib/python2.7/site-packages/alembic/environment.py", line 742, in run_migrations
    self.get_context().run_migrations(**kw)
  File "/usr/lib/python2.7/site-packages/alembic/migration.py", line 305, in run_migrations
    step.migration_fn(**kw)
  File "/usr/lib/python2.7/site-packages/neutron/db/migration/alembic_migrations/versions/4dbe243cd84d_nsxv.py", line 65, in upgrade
    sa.PrimaryKeyConstraint('network_purpose'))
  File "<string>", line 7, in create_table
  File "/usr/lib/python2.7/site-packages/alembic/operations.py", line 936, in create_table
    self.impl.create_table(table)
  File "/usr/lib/python2.7/site-packages/alembic/ddl/impl.py", line 181, in create_table
    self._exec(schema.CreateTable(table))
  File "/usr/lib/python2.7/site-packages/alembic/ddl/impl.py", line 105, in _exec
#!/bin/bash
    return conn.execute(construct, *multiparams, **params)
  File "/usr/lib64/python2.7/site-packages/sqlalchemy/engine/base.py", line 729, in execute
    return meth(self, multiparams, params)
  File "/usr/lib64/python2.7/site-packages/sqlalchemy/sql/ddl.py", line 69, in _execute_on_connection
    return connection._execute_ddl(self, multiparams, params)
  File "/usr/lib64/python2.7/site-packages/sqlalchemy/engine/base.py", line 783, in _execute_ddl
    compiled
  File "/usr/lib64/python2.7/site-packages/sqlalchemy/engine/base.py", line 958, in _execute_context
    context)
  File "/usr/lib/python2.7/site-packages/oslo_db/sqlalchemy/compat/handle_error.py", line 261, in _handle_dbapi_exception
    e, statement, parameters, cursor, context)
  File "/usr/lib64/python2.7/site-packages/sqlalchemy/engine/base.py", line 1155, in _handle_dbapi_exception
    util.raise_from_cause(newraise, exc_info)
  File "/usr/lib64/python2.7/site-packages/sqlalchemy/util/compat.py", line 199, in raise_from_cause
    reraise(type(exception), exception, tb=exc_tb)
  File "/usr/lib64/python2.7/site-packages/sqlalchemy/engine/base.py", line 951, in _execute_context
    context)
  File "/usr/lib64/python2.7/site-packages/sqlalchemy/engine/default.py", line 436, in do_execute
    cursor.execute(statement, parameters)
  File "/usr/lib64/python2.7/site-packages/MySQLdb/cursors.py", line 174, in execute
    self.errorhandler(self, exc, value)
  File "/usr/lib64/python2.7/site-packages/MySQLdb/connections.py", line 36, in defaulterrorhandler
    raise errorclass, errorvalue
sqlalchemy.exc.OperationalError: (OperationalError) (1005, "Can't create table 'neutron.nsxv_internal_networks' (errno: 150)") "\nCREATE TABLE nsxv_internal_networks (\n\tnetwork_purpose ENUM('inter_edge_net') NOT NULL, \n\tnetwork_id VARCHAR(36), \n\tPRIMARY KEY (network_purpose), \n\tFOREIGN KEY(network_id) REFERENCES networks (id) ON DELETE CASCADE\n)ENGINE=InnoDB\n\n" ()
Error updating the database. Please see /var/log/neutron/ logs for details.