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nova
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OpenStack Compute (Nova)
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Lee Yarwood 304d3f62a4 compute: Take an instance.uuid lock when rebooting 
Previously simultaneous requests to reboot and delete an instance could
race as only the latter took a lock against the uuid of the instance.

With the Libvirt driver this race could potentially result in attempts
being made to reconnect previously disconnected volumes on the host.
Depending on the volume backend being used this could then result in
stale block devices point to unmapped volumes being left on the host
that in turn could cause failures later on when connecting newly mapped
volumes.

This change avoids this race by ensuring any request to reboot an
instance takes an instance.uuid lock within the compute manager,
serialising requests to reboot and then delete the instance.

Closes-Bug: #1838392
Change-Id: Ieb59de10c63bb067f92ec054535766cdd722dae2
(cherry picked from commit 9ad54f3dac)
(cherry picked from commit 939cd9b177)
 		2019-11-26 18:14:53 +00:00
api-guide/source Documentation for bandwidth support 2019-03-18 11:24:56 +01:00
api-ref/source Merge "Fix the server group "policy" field type in api-ref" into stable/stein 2019-09-18 17:30:55 +00:00
devstack Remove the CachingScheduler 2018-10-18 17:55:36 -04:00
doc Revert "openstack server create" to "nova boot" in nova docs 2019-11-07 12:45:50 +00:00
etc/nova Add oslo.privsep to config-generator list 2019-03-01 16:43:21 +00:00
gate Remove redundant call to get/create default security group 2019-11-05 23:39:10 +00:00
nova compute: Take an instance.uuid lock when rebooting 2019-11-26 18:14:53 +00:00
playbooks/legacy OpenDev Migration Patch 2019-04-19 19:47:27 +00:00
releasenotes Imported Translations from Zanata 2019-11-03 06:27:01 +00:00
tools Make Xen code py3-compatible 2018-08-10 20:04:19 +00:00
.coveragerc Remove nova/openstack/* from .coveragerc 2016-10-12 16:20:49 -04:00
.gitignore Remove Placement API reference 2018-11-28 03:38:41 +00:00
.gitreview OpenDev Migration Patch 2019-04-19 19:47:27 +00:00
.mailmap Add mailmap entry 2014-05-07 12:14:26 -07:00
.stestr.conf Finish stestr migration 2017-11-24 16:51:12 -05:00
.zuul.yaml Switch to opensuse-15 nodeset 2019-10-30 07:07:11 +01:00
CONTRIBUTING.rst Update links in documents 2018-01-12 17:05:11 +08:00
HACKING.rst Remove descriptions of nonexistent hacking rules 2019-09-03 02:15:41 +00:00
LICENSE initial commit 2010-05-27 23:05:26 -07:00
MAINTAINERS Fix broken URLs 2017-09-07 15:42:31 +02:00
README.rst Docs: modernise links 2018-03-24 20:27:11 +08:00
babel.cfg Get rid of distutils.extra. 2012-02-08 19:30:39 -08:00
bindep.txt Merge "Bindep does not catch missing libpcre3-dev on Ubuntu" 2018-02-14 07:31:09 +00:00
lower-constraints.txt Merge "Require python-ironicclient>=2.7.0" 2019-03-22 02:55:13 +00:00
requirements.txt Merge "Convert driver supported capabilities to compute node provider traits" 2019-03-05 09:50:12 +00:00
setup.cfg Update mailinglist from dev to discuss 2018-12-05 09:44:35 +08:00
setup.py Updated from global requirements 2017-03-02 11:50:48 +00:00
test-requirements.txt Require python-ironicclient>=2.7.0 2019-03-12 15:10:11 -04:00
tox.ini Update UPPER_CONSTRAINTS_FILE for stable/stein 2019-03-22 03:50:05 +00:00

README.rst

Team and repository tags

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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: