openstack/nova
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OpenStack Compute (Nova)
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Matt Riedemann 938b499b1f Ensure source service is up before resizing/migrating 
If the source compute service is down when a resize or
cold migrate is initiated the prep_resize cast from the
selected destination compute service to the source will
fail/hang. The API can validate the source compute service
is up or fail the operation with a 409 response if the
source service is down. Note that a host status of
"MAINTENANCE" means the service is up but disabled by
an administrator which is OK for resize/cold migrate.

The solution here works the validation into the
check_instance_host decorator which surprisingly isn't
used in more places where the source host is involved
like reboot, rebuild, snapshot, etc. This change just
handles the resize method but is done in such a way that
the check_instance_host decorator could be applied to
those other methods and perform the is-up check as well.
The decorator is made backward compatible by default.

Note that Instance._save_services is added because during
resize the Instance is updated and the services field
is set but not actually changed, but Instance.save()
handles object fields differently so we need to implement
the no-op _save_services method to avoid a failure.

Conflicts:
    nova/api/openstack/compute/migrate_server.py
    nova/api/openstack/compute/servers.py
    nova/tests/unit/compute/test_compute_api.py
    nova/tests/functional/wsgi/test_servers.py

NOTE(lyarwood): Conflicts as I8c96b337f32148f8f5899c9b87af331b1fa41424,
I711e56bcb4b72605253fa63be230a68e03e45b84,
I098f91d8c498e5a85266e193ad37c08aca4792b2 and
I19db48bd03855d1a1edbeff5adf15a28abcb5d92 are not in stable/train.

Change-Id: I85423c7bcacff3bc465c22686d0675529d211b59
Closes-Bug: #1856925
(cherry picked from commit ea2ea492a3)
2020-01-16 16:11:48 +00:00
api-guide/source Allow resizing server with port resource request 2019-09-12 10:35:22 -04:00
api-ref/source Block deleting compute services with in-progress migrations 2019-11-15 09:16:16 -05:00
devstack Merge "Find instance in another cell during floating IP re-association" 2019-09-13 15:19:55 +00:00
doc Revert "docs: Highlight the current broken state of SEV" (partially) 2019-12-12 15:43:22 +00:00
etc/nova Remove an unused file and a related description 2019-09-13 10:33:32 +09:00
gate Remove redundant call to get/create default security group 2019-10-25 17:40:05 +00:00
nova Ensure source service is up before resizing/migrating 2020-01-16 16:11:48 +00:00
playbooks Merge "Convert nova-lvm job to zuul v3" 2019-09-04 20:08:05 +00:00
releasenotes Ensure source service is up before resizing/migrating 2020-01-16 16:11:48 +00:00
roles/run-post-test-hook Convert nova-next to a zuul v3 job 2019-07-23 11:32:35 -04:00
tools Replace git.openstack.org URLs with opendev.org URLs 2019-04-24 13:59:57 +08:00
.coveragerc Remove nova/openstack/* from .coveragerc 2016-10-12 16:20:49 -04:00
.gitignore Delete the placement code 2019-04-28 20:06:15 +00:00
.gitreview Update .gitreview for stable/train 2019-09-27 09:06:47 +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 Zuul v3: use devstack-plugin-nfs-tempest-full 2019-12-18 19:21:08 +01:00
babel.cfg Get rid of distutils.extra. 2012-02-08 19:30:39 -08:00
bindep.txt Added openssh-client into bindep 2019-10-29 07:02:24 +00:00
CONTRIBUTING.rst Update links in documents 2018-01-12 17:05:11 +08:00
HACKING.rst Remove descriptions of nonexistent hacking rules 2019-08-26 14:55:51 +09:00
LICENSE initial commit 2010-05-27 23:05:26 -07:00
lower-constraints.txt Merge "Tune up db.instance_get_all_uuids_by_hosts" 2019-09-23 19:58:43 +00:00
MAINTAINERS Fix broken URLs 2017-09-07 15:42:31 +02:00
README.rst Update api-ref location 2019-07-22 19:17:28 +02:00
requirements.txt Merge "Tune up db.instance_get_all_uuids_by_hosts" 2019-09-23 19:58:43 +00:00
setup.cfg Rename 'nova.common.config' module to 'nova.middleware' 2019-08-16 00:53:03 +01:00
setup.py Updated from global requirements 2017-03-02 11:50:48 +00:00
test-requirements.txt Remove an unused file and a related description 2019-09-13 10:33:32 +09:00
tox.ini Update TOX/UPPER_CONSTRAINTS_FILE for stable/train 2019-09-27 09:06:50 +00:00

README.rst

Team and repository tags

image

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: