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[Jim Fehlig <jfehlig@xxxxxxxx>]

Hengqing Hu wrote:
> There is a test in nova:
>
> You can run run_tests.sh in your nova root like this:
> ./run_tests.sh -v test_migrations

Thanks for the tip!

> If there is something wrong in the migration script,
> it will show up in the console.

Indeed.  And easy to fix problems once you know the errors :).

Regards,
Jim

>
> On 07/17/2012 11:59 AM, Jim Fehlig wrote:
>> I'm working on a patch that adds a column to the compute_nodes table in
>> the nova db, but it seems my db migration script fails when calling 'db
>> sync' in stack.sh.  I tried running the command manually, same failure:
>>
>> stack@virt71:~> /opt/stack/nova/bin/nova-manage --debug -v db
>> sync2012-07-16 21:42:52 DEBUG nova.utils [-] backend <module
>> 'nova.db.sqlalchemy.migration' from
>> '/opt/stack/nova/nova/db/sqlalchemy/migration.pyc'> from (pid=19230)
>> __get_backend /opt/stack/nova/nova/utils.py:484
>> /usr/lib64/python2.6/site-packages/sqlalchemy/pool.py:681:
>> SADeprecationWarning: The 'listeners' argument to Pool (and
>> create_engine()) is deprecated.  Use event.listen().
>>    Pool.__init__(self, creator, **kw)
>> /usr/lib64/python2.6/site-packages/sqlalchemy/pool.py:159:
>> SADeprecationWarning: Pool.add_listener is deprecated.  Use
>> event.listen()
>>    self.add_listener(l)
>> Command failed, please check log for more info
>>
>> I can't find anything useful in any log (/var/log/*, /opt/stack/log/*).
>> I ran the above in strace and saw my migration script was opened and
>> then shortly thereafter writing of "Command failed, please check log for
>> more info" and exit(1) :).
>>
>> The patch also adds a 'hypervisor_type' column to the instances table,
>> and that migration script succeeds!
>>
>> Any hints for debugging a db migration script?
>>
>> Thanks,
>> Jim
>>
>>
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