OpenStack Compute (Nova)
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Matt Riedemann 37ac54a42e Delete allocations even if _confirm_resize raises
When we are confirming a resize, the guest is on the dest
host and the instance host/node values in the database
are pointing at the dest host, so the _confirm_resize method
on the source is really best effort. If something fails, we
should not leak allocations in placement for the source compute
node resource provider since the instance is not actually
consuming the source node provider resources.

This change refactors the error handling around the _confirm_resize
call so the big nesting for _error_out_instance_on_exception is
moved to confirm_resize and then a try/finally is added around
_confirm_resize so we can be sure to try and cleanup the allocations
even if _confirm_resize fails in some obscure way. If _confirm_resize
does fail, the error gets re-raised along with logging a traceback
and hint about how to correct the instance state in the DB by hard
rebooting the server on the dest host.

Conflicts:
      nova/compute/manager.py
      nova/tests/unit/compute/test_compute_mgr.py

NOTE(mriedem): The manager.py conflict is due to not having change
Ibb8c12fb2799bb5ceb9e3d72a2b86dbb4f14451e in Rocky. In addition,
since change I0851e2d54a1fdc82fe3291fb7e286e790f121e92 is not in
Rocky the _delete_allocation_after_move signature needs to be
handled a bit different in this backport. The test_compute_mgr.py
conflict and source_node addition in the setUp is due to the same
two changes.

Change-Id: I29c5f491ec20a71283190a1599e7732541de736f
Closes-Bug: #1821594
(cherry picked from commit 03a6d26691)
(cherry picked from commit 5f515060f6)
2019-04-12 17:13:54 -04:00
api-guide/source Fix none-ascii char in doc 2018-08-07 00:13:00 +00:00
api-ref/source Merge "Update the parameter explain when updating a volume attachment" 2018-08-09 17:44:47 +00:00
contrib trivial: Remove "vif" script 2017-08-07 16:00:10 +01:00
devstack Skip test_resize_server_revert_with_volume_attached in nova-lvm 2018-07-19 12:22:18 -04:00
doc Merge "Restore nova-consoleauth to install docs" into stable/rocky 2019-01-31 13:43:56 +00:00
etc/nova Add osprofiler config options to generated reference 2018-06-16 12:46:19 +00:00
gate Make nova-manage db purge take --all-cells 2018-03-08 09:26:49 -08:00
nova Delete allocations even if _confirm_resize raises 2019-04-12 17:13:54 -04:00
placement-api-ref [placement] api-ref: add description for 1.29 2018-08-09 02:56:30 +00:00
playbooks/legacy Move legacy-grenade-dsvm-neutron-multinode-live-migration in-tree 2019-03-01 08:50:52 -05:00
releasenotes Merge "pass endpoint interface to Ironic client" into stable/rocky 2019-03-21 15:59:11 +00:00
tools Convert 'placement_api_docs' into a Sphinx extension 2018-07-02 11:21:47 +01:00
.coveragerc Remove nova/openstack/* from .coveragerc 2016-10-12 16:20:49 -04:00
.gitignore Implement granular policy rules for placement 2018-05-17 11:12:16 -04:00
.gitreview Update .gitreview for stable/rocky 2018-08-10 09:53:45 +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 Move legacy-grenade-dsvm-neutron-multinode-live-migration in-tree 2019-03-01 08:50:52 -05:00
CONTRIBUTING.rst Update links in documents 2018-01-12 17:05:11 +08:00
HACKING.rst Removed unnecessary parantheses in yield statements 2018-03-07 16:44:36 +09:00
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 Use ThreadPoolExecutor for max_concurrent_live_migrations 2018-07-16 13:57:09 -04:00
requirements.txt Merge "Blacklist greenlet 0.4.14" 2018-07-24 16:06:41 +00:00
setup.cfg Implement granular policy rules for placement 2018-05-17 11:12:16 -04:00
setup.py Updated from global requirements 2017-03-02 11:50:48 +00:00
test-requirements.txt Cleanup ugly stub in TestLocalDeleteAllocations 2018-05-16 09:23:55 -04:00
tests-py3.txt Remove mox in unit/virt/xenapi/test_vmops.py 2018-05-06 22:31:05 +00:00
tox.ini tox: Don't write byte code (maybe) 2019-02-14 10:40:26 +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: