Open Stack

Is it up for review somewhere so we can debug by inspection?

	-Sean

On 07/16/2012 11:59 PM, 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 at 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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-- 
Sean Dague
IBM Linux Technology Center
email: sdague at linux.vnet.ibm.com
alt-email: sldague at us.ibm.com