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[Song Li <lisongbj@xxxxxxxxxx>]

it was caused by not import db2 driver in env.py

** Changed in: neutron
       Status: New => Invalid

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https://bugs.launchpad.net/bugs/1442524

Title:
  Operation not allowed errors when execute db migration  when using DB2
  for lbaas

Status in OpenStack Neutron (virtual network service):
  Invalid

Bug description:
  when using db2 as the database for neutron, we execute:
   neutron-db-manage --service lbaas --config-file /etc/neutron/neutron.conf --config-file /etc/neutron/plugin.ini upgrade head    

  faced problem:
  INFO  [alembic.migration] Context impl IBMDBImpl.
  INFO  [alembic.migration] Will assume transactional DDL.
  INFO  [alembic.migration] Context impl IBMDBImpl.
  INFO  [alembic.migration] Will assume transactional DDL.
  INFO  [alembic.migration] Running upgrade  -> start_neutron_lbaas, start neutron-lbaas chain
  INFO  [alembic.migration] Running upgrade start_neutron_lbaas -> lbaasv2, lbaas version 2 api
  INFO  [alembic.migration] Running upgrade lbaasv2 -> 4deef6d81931, add provisioning and operating statuses
  INFO  [alembic.migration] Running upgrade 4deef6d81931 -> 4b6d8d5310b8, add_index_tenant_id
  Traceback (most recent call last):
    File "/usr/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 241, 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_lbaas/db/migration/alembic_migrations/env.py", line 85, in <module>
      run_migrations_online()
    File "/usr/lib/python2.7/site-packages/neutron_lbaas/db/migration/alembic_migrations/env.py", line 76, 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_lbaas/db/migration/alembic_migrations/versions/4b6d8d5310b8_add_index_tenant_id.py", line 38, in upgrade
      table, ['tenant_id'], unique=False)
    File "<string>", line 7, in create_index
    File "/usr/lib/python2.7/site-packages/alembic/operations.py", line 1019, in create_index
      unique=unique, quote=quote, **kw)
    File "/usr/lib/python2.7/site-packages/alembic/ddl/impl.py", line 194, in create_index
      self._exec(schema.CreateIndex(index))
    File "/usr/lib/python2.7/site-packages/alembic/ddl/impl.py", line 106, in _exec
      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/lib/python2.7/site-packages/ibm_db_sa/ibm_db.py", line 106, in do_execute
      cursor.execute(statement, parameters)
    File "/usr/lib64/python2.7/site-packages/ibm_db_dbi.py", line 1335, in execute
      self._execute_helper(parameters)
    File "/usr/lib64/python2.7/site-packages/ibm_db_dbi.py", line 1247, in _execute_helper
      raise self.messages[len(self.messages) - 1]
  oslo_db.exception.DBError: (InternalError) ibm_db_dbi::InternalError: Statement Execute Failed: [IBM][CLI Driver][DB2/LINUXX8664] SQL0668N  Operation not allowed for reason code "7" on table "NEUTRON.LBAAS_MEMBERS".  SQLSTATE=57016 SQLCODE=-668 'CREATE INDEX ix_lbaas_members_tenant_id ON lbaas_members (tenant_id)' ()

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