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I'm having the same problem when trying to migrate from OVS to ML2

Here's /var/log/neutron/server.log

2014-04-23 04:12:39.702 19132 WARNING neutron.plugins.ml2.managers [-] 
Failed to bind port 7c540392-a5c1-424f-93f0-4532f4d20c65 on host network2
2014-04-23 04:12:39.704 19132 WARNING neutron.plugins.ml2.plugin [-] In 
_notify_port_updated(), no bound segment for port 
7c540392-a5c1-424f-93f0-4532f4d20c65 on network 
78640a95-25f0-423e-b170-baa008f7cd45
2014-04-23 04:12:39.742 19132 WARNING neutron.plugins.ml2.managers [-] 
Failed to bind port 6a35db01-7752-4c2f-8f8c-648b9dc8cd3a on host network2
2014-04-23 04:12:39.744 19132 WARNING neutron.plugins.ml2.plugin [-] In 
_notify_port_updated(), no bound segment for port 
6a35db01-7752-4c2f-8f8c-648b9dc8cd3a on network 
a396e433-3876-41ae-8b57-fa14348b0f43
2014-04-23 04:12:40.596 19132 WARNING neutron.plugins.ml2.rpc [-] Device 
6a35db01-7752-4c2f-8f8c-648b9dc8cd3a requested by agent ovs7e2fe489fc47 
on network a396e433-3876-41ae-8b57-fa14348b0f43 not bound, vif_type: 
binding_failed

Still looking for the solution.

Vu Cong Tuan

On 04/21/2014 08:04 PM, Igor Cardoso wrote:
> This email supersedes my previous one on 2014/04/20 20:24 UTC,
> which wasn't properly formatted.
>
> I decided to upgrade my Havana deployment to Icehouse right after the
> official release so I could contribute on the documentation with the
> steps necessary, including Neutron and going from the OVS to the ML2
> neutron plugin.
>
> However, I'm still having problems due to the ML2 migration.
>
> All nodes (1 hybrid Controller/Network and 1 Compute) are running up
> to date Ubuntu 12.04.4 LTS.
> Havana was working perfectly before (OVS with GRE).
>
> ------------------------------------------------------------------
> Most important steps done so far:
>
> - Updated everything to Icehouse;
>
> - Ran all database migration commands (typical db sync/db_sync);
>
> - Ran Neutron's own migration commands, in the following ways:
>     neutron-db-manage --config-file /etc/neutron/neutron.conf \
>                       --config-file (...)/ovs_neutron_plugin.ini \
>                       stamp havana
>     neutron-db-manage --config-file /etc/neutron/neutron.conf \
>                       --config-file (...)/ovs_neutron_plugin.ini \
>                       upgrade icehouse
>
> - Manually ran the ML2 migration script:
>         python -m neutron.db.migration.migrate_to_ml2 openvswitch \
>                mysql://neutron:mypass@mycontroller/neutron
> ------------------------------------------------------------------
>
> Here are the contents of the ml2_port_bindings table,
> right after I run the ML2 migration script:
> http://paste.openstack.org/show/76513/
>
>
> But, if I restart the neutron services, it becomes:
> http://paste.openstack.org/show/76515/
>
>
> Either way, starting nova-compute service at the Compute node yields:
> (...)
> vif_type parameter must be present for this vif_driver implementation
> (...)
>
> And doesn't start.
>
> Any ideas?
>
> Best regards,
>
> -- 
> Igor Duarte Cardoso.
> http://igordcard.blogspot.com
>
>
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