[openstack-dev] [neutron][ml2][sqlalchemy] Database table does not exists error

Jakub Libosvar libosvar at redhat.com
Thu Jan 22 12:54:31 UTC 2015

On 01/22/2015 01:00 PM, Ettore zugliani wrote:
> I am implementing the precommit part of a mechanism driver (ml2) right
> now i'm having problems with sqlalchemy. 
> I made the class that uses the tables, but when the precommit is called
> an error pops up telling that the tables don't exists. 
> To create the tables should i use a create all on initialize? or is
> there a proper way of doing it?
Hi Ettore,

you need to make a migration script for your class. More info can be
found here: https://wiki.openstack.org/wiki/Neutron/DatabaseMigration

After autogenerating you can fine-tune it. It's gonna be placed at


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