Open Stack

We are ecstatic to announce the release of:

nova 20.4.1: Cloud computing fabric controller

This release is part of the train stable release series.

The source is available from:

    https://opendev.org/openstack/nova

Download the package from:

    https://tarballs.openstack.org/nova/

Please report issues through:

    https://bugs.launchpad.net/nova/+bugs

For more details, please see below.

20.4.1
^^^^^^

Bug Fixes

* Since Libvirt v.1.12.0 and the introduction of the libvirt issue ,
  there is a fact that if we set cache mode whose write semantic is
  not O_DIRECT (i.e. "unsafe", "writeback" or "writethrough"), there
  will be a problem with the volume drivers (i.e.
  LibvirtISCSIVolumeDriver, LibvirtNFSVolumeDriver and so on), which
  designate native io explicitly.

  When the driver_cache (default is none) has been configured as
  neither "none" nor "directsync", the libvirt driver will ensure the
  driver_io to be "threads" to avoid an instance spawning failure.

   (https://bugzilla.redhat.com/show_bug.cgi?id=1086704)

* An issue that could result in instances with the "isolate" thread
  policy ("hw:cpu_thread_policy=isolate") being scheduled to hosts
  with SMT (HyperThreading) and consuming "VCPU" instead of "PCPU" has
  been resolved. See bug #1889633 for more information.

   (https://bugs.launchpad.net/nova/+bug/1889633)

* Addressed an issue that prevented instances using multiqueue
  feature from being created successfully when their vif_type is TAP.

* Resolved an issue whereby providing an empty list for the
  "policies" field in the request body of the "POST /os-server-groups"
  API would result in a server error. This only affects the 2.1 to
  2.63 microversions, as the 2.64 microversion replaces the "policies"
  list field with a "policy" string field. See bug #1894966 for more
  information.

   (https://bugs.launchpad.net/nova/+bug/1894966)

Changes in nova 20.4.0..20.4.1
------------------------------

115b43ed3e Follow up for cherry-pick check for merge patch
750655c19d Allow tap interface with multiqueue
75c0327a67 Set different VirtualDevice.key
1634d3f59a api: Set min, maxItems for server_group.policies field
cf6db29168 tests: Add regression test for bug 1894966
efc35b1c52 Sanity check instance mapping during scheduling
4984b3b75b Correctly disable greendns
06df7cae31 Removes the delta file once image is extracted
7ace26e4bc post live migration: don't call Neutron needlessly
d92fe4f3e6 libvirt:driver:Disallow AIO=native when 'O_DIRECT' is not available
ed9eacff92 Add note and daxio version to the vPMEM document
bbc562c572 compute: Validate a BDMs disk_bus when provided
c5abbd17b5 Removed the host FQDN from the exception message
683005df39 Add checks for volume status when rebuilding
c6c3483a41 compute: Don't delete the original attachment during pre LM rollback
377dc5bda9 compute: refactor volume bdm rollback error handling
6a9bb79fc0 Add regression tests for bug #1889108
44676ddf84 hardware: Reject requests for no hyperthreads on hosts with HT
b60be4a941 tests: Add reproducer for bug #1889633


Diffstat (except docs and test files)
-------------------------------------

api-ref/source/parameters.yaml                     |   7 +-
.../api/openstack/compute/schemas/server_groups.py |  18 ++-
nova/api/openstack/compute/servers.py              |   2 +
nova/compute/api.py                                |  30 ++++-
nova/compute/manager.py                            |  94 ++++++++++----
nova/conductor/manager.py                          |  79 +++++++++---
nova/exception.py                                  |   7 +-
nova/monkey_patch.py                               |  23 ++--
nova/objects/fields.py                             |   2 +
.../functional/regressions/test_bug_1889108.py     | 111 ++++++++++++++++
.../functional/regressions/test_bug_1894966.py     |  40 ++++++
.../api/openstack/compute/test_server_actions.py   |  15 +++
.../unit/api/openstack/compute/test_serversV21.py  |   3 +-
nova/virt/hardware.py                              |  24 ++++
nova/virt/libvirt/driver.py                        |  20 +++
nova/virt/libvirt/host.py                          |   2 +-
nova/virt/libvirt/vif.py                           |  57 ++++++---
nova/virt/libvirt/volume/mount.py                  |   2 +-
nova/virt/vmwareapi/vm_util.py                     |   8 +-
...ative-io-is-not-supported-fe56014e9648a518.yaml |  14 ++
.../notes/bug-1889633-37e524fb6c20fbdf.yaml        |   9 ++
.../notes/bug-1893263-769acadc4b6141d0.yaml        |   5 +
.../notes/bug-1894966-d25c12b1320cb910.yaml        |  10 ++
tools/check-cherry-picks.sh                        |   2 +-
34 files changed, 1117 insertions(+), 111 deletions(-)