OpenStack Compute (Nova)
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Alexandre Arents 8953a68946 Rebase qcow2 images when unshelving an instance
During unshelve, instance is spawn with image created by shelve
and is deleted just after, instance.image_ref still point
to the original instance build image.

In qcow2 environment, this is an issue because instance backing file
don't match anymore instance.image_ref and during live-migration/resize,
target host will fetch image corresponding to instance.image_ref
involving instance corruption.

This change fetches original image and rebase instance disk on it.
This avoid image_ref mismatch and bring back storage benefit to keep common
image in cache.

If original image is no more available in glance, backing file is merged into
disk(flatten), ensuring instance integrity during next live-migration/resize
operation.

Change-Id: I1a33fadf0b7439cf06c06cba2bc06df6cef0945b
Closes-Bug: #1732428
2020-08-13 07:22:07 +00:00
api-guide/source Fix pygments_style 2020-05-20 21:56:41 +02:00
api-ref/source compute: Validate a BDMs disk_bus when provided 2020-07-29 16:05:48 +00:00
devstack Merge "Find instance in another cell during floating IP re-association" 2019-09-13 15:19:55 +00:00
doc Merge "Document nova in tree virt drivers" 2020-08-05 14:22:44 +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 Rebase qcow2 images when unshelving an instance 2020-08-13 07:22:07 +00:00
playbooks Make our ceph job test with glance in multistore mode 2020-07-14 09:11:42 -07:00
releasenotes Detach is broken for multi-attached fs-based volumes 2020-08-11 11:35:06 +00:00
roles Enable cross-cell resize in the nova-multi-cell job 2019-12-23 10:10:57 -05:00
tools Merge "Fix user creation with GRANT in MySQL 8.0(Ubuntu Focal)" 2020-07-02 18:40:46 +00:00
.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 Merge "Make our ceph job test with glance in multistore mode" 2020-07-22 02:46:12 +00:00
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 Fix lower-constraints conflicts 2020-08-03 13:12:48 -05:00
mypy-files.txt Lookup nic feature by PCI address 2020-08-04 22:25:02 +00:00
requirements.txt Fix lower-constraints conflicts 2020-08-03 13:12:48 -05:00
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 Fix lower-constraints conflicts 2020-08-03 13:12:48 -05:00
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: