OpenStack Compute (Nova)
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melanie witt c38c1f8277 Handle cells race condition deleting unscheduled instance
In cells, if a delete request comes in before an instance has been
scheduled to a cell, the API cell will broadcast a message to
delete the instance "everywhere" (in all cells) followed by a local
delete at the top. This causes a race between cells who have a
record for the instance syncing to the top via instance_destroy_at_top
and the local delete at the top (double delete is possible). If a
second delete is attempted, InstanceNotFound will be raised and
propagated up to the API, resulting in a 404 response to the caller
who requested to delete the instance.

This change catches and ignores InstanceNotFound during local delete
at the API cell to prevent propagating an error when the instance
has already been deleted.

Change-Id: Ic67f0f6edb0d38722787a6b88b39eae218110dc9
2015-06-03 20:19:47 +00:00
contrib Merge "changed quantum to neutron in vif-openstack" 2014-03-05 10:45:05 +00:00
doc hypervisor support matrix: update libvirt KVM (s390x) 2015-05-26 17:05:56 +02:00
etc/nova Merge "Add policy to cover snapshotting of volume backed instances" 2015-05-29 16:13:26 +00:00
nova Handle cells race condition deleting unscheduled instance 2015-06-03 20:19:47 +00:00
plugins/xenserver xenapi: don't send terminating chunk on errors 2015-01-14 13:58:18 +00:00
tools Don't use dict.iterkeys() 2015-05-21 14:52:53 -07:00
.coveragerc Port Cheetah templates to Jinja2 2013-09-02 16:03:34 +02:00
.gitignore remove all traces of pylint testing infrastructure 2015-01-08 11:56:45 +00:00
.gitreview Add .gitreview config file for gerrit. 2011-10-24 15:07:19 -04:00
.mailmap Add mailmap entry 2014-05-07 12:14:26 -07:00
.testr.conf Add tox -e functional 2014-11-12 15:31:06 -05:00
CONTRIBUTING.rst Workflow documentation is now in infra-manual 2014-12-05 03:30:37 +00:00
HACKING.rst Merge "Add note on running single tests to HACKING.rst" 2015-03-03 15:55:42 +00:00
LICENSE initial commit 2010-05-27 23:05:26 -07:00
MAINTAINERS Add a maintainers file 2015-05-23 03:22:07 +10:00
MANIFEST.in Finish AUTHORS transition. 2012-07-05 09:11:37 -05:00
README.rst Update links in README 2014-05-07 16:06:24 -07:00
babel.cfg Get rid of distutils.extra. 2012-02-08 19:30:39 -08:00
openstack-common.conf Sync from oslo-incubator 2015-03-19 14:28:00 -04:00
requirements.txt Fix pip-missing-reqs 2015-05-14 11:37:28 -07:00
run_tests.sh Fix likely undesired use of redirection 2015-02-02 16:26:31 +01:00
setup.cfg Open Liberty development 2015-04-07 10:24:39 +02:00
setup.py Updated from global requirements 2014-04-30 02:43:45 +00:00
test-requirements-py3.txt Disable oslo.vmware test dependency on Python 3 2015-05-22 23:59:03 -07:00
test-requirements.txt Block oslo.vmware 0.13.0 due to a backwards incompatible change 2015-05-27 17:32:02 +00:00
tox.ini Remove hash seed comment from tox.ini 2015-05-29 14:43:56 -07:00

README.rst

OpenStack Nova README

OpenStack Nova provides a cloud computing fabric controller, supporting a wide variety of virtualization technologies, including KVM, Xen, LXC, VMware, and more. In addition to its native API, it includes compatibility with the commonly encountered Amazon EC2 and S3 APIs.

OpenStack Nova is distributed under the terms of the Apache License, Version 2.0. The full terms and conditions of this license are detailed in the LICENSE file.

Nova primarily consists of a set of Python daemons, though it requires and integrates with a number of native system components for databases, messaging and virtualization capabilities.

To keep updated with new developments in the OpenStack project follow @openstack on Twitter.

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

http://docs.openstack.org

For information about the different compute (hypervisor) drivers supported by Nova, read this page on the wiki:

https://wiki.openstack.org/wiki/HypervisorSupportMatrix

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:

http://bugs.launchpad.net/nova

Developers wishing to work on the OpenStack Nova project should always base their work on the latest Nova code, available from the master GIT repository at:

https://git.openstack.org/cgit/openstack/nova

Developers should also join the discussion on the mailing list, at:

http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack-dev

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:

http://docs.openstack.org/developer/nova/

For information on how to contribute to Nova, please see the contents of the CONTRIBUTING.rst file.

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