lower-constraints: Bump packaging to 20.4

This version of packaging is actually required by oslo.utils as of 4.5
by Ic9bda0783d3664e1f518d513d81b3271028335fd that was itself introduced
as a lower-constraints version within Nova as of
Ic4d3b998bb9701cb1e3ef12d9bb6f4d91cc19c18.

NOTE(gibi): In order to land this we also needed to backport
I95bc22f7d65454cd9e7b54a0e6d9516f2f204978 due to bug #1907511 and
bug #1907522

NOTE(lyarwood): Additionally I1aeab16e2b8d907a114ed22c7e716f534fe1b129
is backported and squashed into this change allowing
nova-grenade-multinode to pass, avoiding bug #1901739.

Change-Id: I67255fa1b919a27e92028da95d71ddd4bf53edc1
Closes-Bug: #1907117
Related-Bug: #1907522
Closes-Bug: #1907511
(cherry picked from commit 7a9d4df)
(cherry picked and squashed 048250a)
(cherry picked and squashed eaa98e3)

Author: lyarwood

api-guide/source/port_with_resource_request.rst

@@ -29,7 +29,8 @@ As of 20.0.0 (Train), nova supports cold migrating and resizing servers with
 neutron ports having resource requests if both the source and destination
 compute services are upgraded to 20.0.0 (Train) and the
 ``[upgrade_levels]/compute`` configuration does not prevent the computes from
-using the latest RPC version.
+using the latest RPC version. However cross cell resize and cross cell migrate
+operations are still not supported with such ports.
 
 As of 21.0.0 (Ussuri), nova supports evacuating, live migrating and unshelving
 servers with neutron ports having resource requests.

devstack/nova-multi-cell-blacklist.txt

@@ -4,3 +4,9 @@
 # Exclude tempest.scenario.test_network tests since they are slow and
 # only test advanced neutron features, unrelated to multi-cell testing.
 ^tempest.scenario.test_network
+
+# Also exlude resize and migrate tests with qos ports as qos is currently
+# not supported in cross cell resize case . See
+# https://bugs.launchpad.net/nova/+bug/1907511 for details
+test_migrate_with_qos_min_bw_allocation
+test_resize_with_qos_min_bw_allocation

gate/live_migration/hooks/run_tests.sh

@@ -26,7 +26,8 @@ STACK_USER=${STACK_USER:-stack}
 
 echo '1. test with all local storage (use default for volumes)'
 echo 'NOTE: test_volume_backed_live_migration is skipped due to https://bugs.launchpad.net/nova/+bug/1524898'
-run_tempest "block migration test" "^.*test_live_migration(?!.*(test_volume_backed_live_migration))"
+echo 'NOTE: test_live_block_migration_paused is skipped due to https://bugs.launchpad.net/nova/+bug/1901739'
+run_tempest "block migration test" "^.*test_live_migration(?!.*(test_volume_backed_live_migration|test_live_block_migration_paused))"
 
 # TODO(mriedem): Run $BASE/new/nova/gate/test_evacuate.sh for local storage
 

lower-constraints.txt

@@ -90,7 +90,7 @@ oslotest==3.8.0
 osprofiler==1.4.0
 ovs==2.10.0
 ovsdbapp==0.15.0
-packaging==17.1
+packaging==20.4
 paramiko==2.7.1
 Paste==2.0.2
 PasteDeploy==1.5.0

releasenotes/notes/cros-scell-resize-not-supported-with-ports-having-resource-request-a8e1029ef5983793.yaml

@@ -0,0 +1,7 @@
+---
+issues:
+  - |
+    When the tempest test coverage was added for resize and cold migrate
+    with neutron ports having QoS minimum bandwidth policy rules we
+    discovered that the cross cell resize code path cannot handle such ports.
+    See bug https://bugs.launchpad.net/nova/+bug/1907522 for details.