OpenStack Compute (Nova)
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Dan Smith 07025abf72 Make libvirt able to trigger a backend image copy when needed
This teaches libvirt's RBD image backend about the outside world, that
other ceph clusters may exist, and how to use Glance's multi-store image
import-via-copy mechanism.

The basic theory is that when we go to do the normal CoW clone for RBD,
we do the "does this image have a location that matches my RBD backend?"
check. If that check does not pass, if configured, we avoid failing
and ask Glance to copy it to our store instead. After that has completed,
we just recurse (once) and re-try our existing logic to see if the image
is now in a reachable location. If so, we pass like we would have
originally, and if not, we fail in the same way we would have.

The copy-to-store logic sets up a looping poll to check for copy completion
every N seconds according to a tunable, with a total timeout value in
case it never completes. If the timeout expires or Glance reports failure,
we will treat that the same as unreachable-due-to-location.

Related to blueprint rbd-glance-multistore

Change-Id: Ia839ad418b0f2887cb8e8f5ee3e660a0751db9ce
2020-06-24 07:37:51 -07:00
api-guide/source Fix pygments_style 2020-05-20 21:56:41 +02:00
api-ref/source Fix pygments_style 2020-05-20 21:56:41 +02:00
devstack Merge "Find instance in another cell during floating IP re-association" 2019-09-13 15:19:55 +00:00
doc Merge "libvirt: Don't allow "reserving" file-backed memory" 2020-06-17 12:41:46 +00:00
etc/nova Allow versioned discovery unauthenticated 2020-04-03 21:24:28 +00:00
gate nova-live-migration: Only stop n-cpu and q-agt during evacuation testing 2020-03-21 17:08:47 +00:00
nova Make libvirt able to trigger a backend image copy when needed 2020-06-24 07:37:51 -07:00
playbooks Enable cross-cell resize in the nova-multi-cell job 2019-12-23 10:10:57 -05:00
releasenotes Make libvirt able to trigger a backend image copy when needed 2020-06-24 07:37:51 -07:00
roles Enable cross-cell resize in the nova-multi-cell job 2019-12-23 10:10:57 -05:00
tools Check cherry-pick hashes in pep8 tox target 2020-06-15 11:15:31 -07:00
.coveragerc Remove nova/openstack/* from .coveragerc 2016-10-12 16:20:49 -04:00
.gitignore tox: Integrate mypy 2020-05-15 15:59:53 +01:00
.gitreview OpenDev Migration Patch 2019-04-19 19:45:52 +00:00
.mailmap Add mailmap entry 2014-05-07 12:14:26 -07:00
.pre-commit-config.yaml Switch to hacking 2.x 2020-01-17 11:30:40 +00:00
.stestr.conf Finish stestr migration 2017-11-24 16:51:12 -05:00
.zuul.yaml zuul: Make devstack-plugin-ceph-tempest-py3 a voting check job again 2020-05-26 09:44:21 +01:00
CONTRIBUTING.rst [Community goal] Update contributor documentation 2020-03-25 12:01:37 +00:00
HACKING.rst Remove hacking rules for python 2/3 compatibility 2020-06-17 08:19:13 +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 Start README.rst with a better title 2019-11-19 17:29:28 +01:00
bindep.txt Merge "Add missing test bindep on openssl" 2020-06-21 02:01:16 +00:00
lower-constraints.txt Merge "Cap jsonschema 3.2.0 as the minimal version" 2020-06-24 01:54:33 +00:00
mypy-files.txt libvirt: Add typing information 2020-06-19 10:47:59 +01:00
requirements.txt Merge "Cap jsonschema 3.2.0 as the minimal version" 2020-06-24 01:54:33 +00:00
setup.cfg tox: Integrate mypy 2020-05-15 15:59:53 +01:00
setup.py Updated from global requirements 2017-03-02 11:50:48 +00:00
test-requirements.txt Bump hacking min version to 3.1.0 2020-05-19 08:09:43 +08:00
tox.ini Remove hacking rules for python 2/3 compatibility 2020-06-17 08:19:13 +00:00

README.rst

OpenStack Nova

image

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: