[Bug 1249708] Re: Missing neutron-ovs-cleanup service

[George Shuklin]

It should start on every compute and network node. It clear up all
strange artefacts saved by ovs-vsctl.

How to get 'strange artifacts':
On any working compute/network node with active networking on instances perform any operations on ovs-vsctl, f.e.:
ovs-vsctl add-br just_empty_bridge
ovs-vsctl del-br just_empty_bridge

ovs will save all current tap/tun qr-* interfaces in br-int/br-ext
bridges and restore them on next boot inside own config, even if they
are not available at server start.

This will cause problems for existing instances during their startup.

neutron-ovs-cleanup should run during startup on all non-diskless nodes
to ensure nothing strange is exists in bridges prior fists
instance/agent start.

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https://bugs.launchpad.net/bugs/1249708

Title:
  Missing neutron-ovs-cleanup service

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