Dan Smith b1b88bf001 Additional qemu safety checking on base images
There is an additional way we can be fooled into using a qcow2 file
with a data-file, which is uploading it as raw to glance and then
booting an instance from it. Because when we go to create the
ephemeral disk from a cached base image, we've lost the information
about the original source's format, we probe the image's file type
without a strict format specified. If a qcow2 file is listed in
glance as a raw, we won't notice it until it is too late.

This brings over another piece of code (proposed against) glance's
format inspector which provides a safe format detection routine. This
patch uses that to detect the format of and run a safety check on the
base image each time we go to use it to create an ephemeral disk
image from it.

This also detects QED files and always marks them as unsafe as we do
not support that format at all. Since we could be fooled into
downloading one and passing it to qemu-img if we don't recognize it,
we need to detect and reject it as unsafe.

Change-Id: I4881c8cbceb30c1ff2d2b859c554e0d02043f1f5
2024-07-02 13:08:40 -07:00
2023-12-20 18:31:47 +00:00
2023-11-10 20:12:31 +00:00
2019-04-19 19:45:52 +00:00
2017-11-24 16:51:12 -05:00
2023-08-13 09:16:27 +02:00
2017-09-07 15:42:31 +02:00
2024-05-01 01:30:04 +09:00
2017-03-02 11:50:48 +00:00
2024-05-01 01:30:04 +09:00
2024-05-21 17:43:27 +00:00

==============
OpenStack Nova
==============

.. image:: https://governance.openstack.org/tc/badges/nova.svg
    :target: https://governance.openstack.org/tc/reference/tags/index.html

.. Change things from this point on


OpenStack Nova provides a cloud computing fabric controller, supporting a wide
variety of compute technologies, including: libvirt (KVM, Xen, LXC and more),
VMware and OpenStack Ironic.

Use the following resources to learn more.

API
---

To learn how to use Nova's API, consult the documentation available online at:

- `Compute API Guide <https://docs.openstack.org/api-guide/compute/>`__
- `Compute API Reference <https://docs.openstack.org/api-ref/compute/>`__

For more information on OpenStack APIs, SDKs and CLIs in general, refer to:

- `OpenStack for App Developers <https://www.openstack.org/appdev/>`__
- `Development resources for OpenStack clouds
  <https://developer.openstack.org/>`__

Operators
---------

To learn how to deploy and configure OpenStack Nova, consult the documentation
available online at:

- `OpenStack Nova <https://docs.openstack.org/nova/>`__

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:

- `Bug Tracker <https://bugs.launchpad.net/nova>`__

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:

- `Official Nova Documentation <https://docs.openstack.org/nova/>`__
- `Official Client Documentation
  <https://docs.openstack.org/python-novaclient/>`__

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:

- `Nova Specs <http://specs.openstack.org/openstack/nova-specs/>`__

.. _Summit: https://www.openstack.org/summit/
.. _Project Team Gathering: https://www.openstack.org/ptg/
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