Comment 3 for bug 1230330

Reviewed: https://review.openstack.org/48765
Committed: http://github.com/openstack/neutron/commit/19804bb5c5ad8ba10fbda1bf213f698d97c137e7
Submitter: Jenkins
Branch: master

commit 19804bb5c5ad8ba10fbda1bf213f698d97c137e7
Author: Bob Kukura <email address hidden>
Date: Fri Sep 27 17:54:45 2013 -0400

    Fix auto-deletion of ports and subnets in ML2

    When a network is deleted, certain ports and any subnets referencing
    it are auto-deleted. The implementation of
    NeutronDBPluginV2.delete_network() does this at the DB level, so ML2's
    mechanism drivers were not being called.

    Ml2Plugin.delete_network() is changed to not use the base class's
    method, and to auto-delete ports and subnets by calling its own
    delete_port() and delete_subnet() methods outside of the
    transaction. A loop avoids race conditions with ports or subnets being
    asynchronously added to the network.

    Closes-Bug: 1230330
    Change-Id: Icf21400c9938eec29d70da8497b9ef92642131e2