001f3a7bfe
It was discovered that default= on a Column definition in a schema migration will attempt to update the table with the provided value, instead of just translating on read, which is often the assumption. The Instance.hidden=False change introduced in Train[1] used such a default on the new column, which caused at least one real-world deployment to time out rewriting the instances table due to size. Apparently SQLAlchemy-migrate also does not consider such a timeout to be a failure and proceeds on. The end result is that some existing instances in the database have hidden=NULL values, and the DB model layer does not convert those to hidden=False when we read/query them, causing those instances to be excluded from the API list view. This change alters the 399 schema migration to remove the default=False specification. This does not actually change the schema, but /will/ prevent users who have not yet upgraded to Train from rewriting the table. This change also makes the instance_get_all_by_filters() code handle hidden specially, including false and NULL in a query for non-hidden instances. A future change should add a developer trap test to ensure that future migrations do not add default= values to new columns to avoid this situation in the future. [1] Iaffb27bd8c562ba120047c04bb62619c0864f594 Change-Id: Iace3f653b42c20887b40ee0105c8e9a4edeff1f7 Closes-Bug: #1862205
OpenStack Nova
OpenStack Nova provides a cloud computing fabric controller, supporting a wide variety of compute technologies, including: libvirt (KVM, Xen, LXC and more), Hyper-V, VMware, XenServer, OpenStack Ironic and PowerVM.
Use the following resources to learn more.
API
To learn how to use Nova's API, consult the documentation available online at:
For more information on OpenStack APIs, SDKs and CLIs in general, refer to:
Operators
To learn how to deploy and configure OpenStack Nova, consult the documentation available online at:
In the unfortunate event that bugs are discovered, they should be reported to the appropriate bug tracker. If you obtained the software from a 3rd party operating system vendor, it is often wise to use their own bug tracker for reporting problems. In all other cases use the master OpenStack bug tracker, available at:
Developers
For information on how to contribute to Nova, please see the contents of the CONTRIBUTING.rst.
Any new code must follow the development guidelines detailed in the HACKING.rst file, and pass all unit tests.
Further developer focused documentation is available at:
Other Information
During each Summit and Project Team Gathering, we agree on what the whole community wants to focus on for the upcoming release. The plans for nova can be found at: