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[Pavel Bondar <pbondar@xxxxxxxxxxxx>]

Public bug reported:

During retrying update router request   'external_gateway_info' field got missed, so update does not work correctly on retry in this case.
Before retry:
{u'router': {u'external_gateway_info': {u'network_id': u'e0e7e739-d64f-4eb8-b4ec-bb3ef9623ab9'}, u'name': u'tempest-router--1366126092', u'admin_state_up': False}}
After retry:
{u'router': {u'name': u'tempest-router--1366126092', u'admin_state_up': False}}

Related log output:
2016-04-22 12:26:35.545 18234 DEBUG neutron.api.v2.base [req-efd63a02-c382-4268-8dc9-a7708a0fc205 tempest-RoutersIpV6Test-2037938894 -] Request body: {u'router': {u'external_gateway_info': {u'network_id': u'e0e7e739-d64f-4eb8-b4ec-bb3ef9623ab9'}, u'name': u'tempest-router--1366126092', u'admin_state_up': False}} prepare_request_body /opt/stack/new/neutron/neutron/api/v2/base.py:656
...
2016-04-22 12:26:36.873 18234 DEBUG oslo_db.api [req-efd63a02-c382-4268-8dc9-a7708a0fc205 tempest-RoutersIpV6Test-2037938894 -] Performing DB retry for function neutron.api.v2.base._update wrapper /usr/local/lib/python2.7/dist-packages/oslo_db/api.py:150
2016-04-22 12:26:36.874 18234 DEBUG neutron.api.v2.base [req-efd63a02-c382-4268-8dc9-a7708a0fc205 tempest-RoutersIpV6Test-2037938894 -] Request body: {u'router': {u'name': u'tempest-router--1366126092', u'admin_state_up': False}} prepare_request_body /opt/stack/new/neutron/neutron/api/v2/base.py:656

Full log available at [1]. Trace req-efd63a02-c382-4268-8dc9-a7708a0fc205
request processing. And [2] is failed test related to that issue.

[1] http://logs.openstack.org/23/181023/71/check/gate-tempest-dsvm-neutron-linuxbridge/a475a39/logs/screen-q-svc.txt.gz#_2016-04-22_12_26_35_545
[2] http://logs.openstack.org/23/181023/71/check/gate-tempest-dsvm-neutron-linuxbridge/a475a39/console.html#_2016-04-22_12_57_48_092

** Affects: neutron
     Importance: Undecided
     Assignee: Pavel Bondar (pasha117)
         Status: New


** Tags: l3-ipam-dhcp

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https://bugs.launchpad.net/bugs/1573683

Title:
  [Pluggable IPAM] On request retry 'external_gateway_info' field got
  missed for router update case

Status in neutron:
  New

Bug description:
  During retrying update router request   'external_gateway_info' field got missed, so update does not work correctly on retry in this case.
  Before retry:
  {u'router': {u'external_gateway_info': {u'network_id': u'e0e7e739-d64f-4eb8-b4ec-bb3ef9623ab9'}, u'name': u'tempest-router--1366126092', u'admin_state_up': False}}
  After retry:
  {u'router': {u'name': u'tempest-router--1366126092', u'admin_state_up': False}}

  Related log output:
  2016-04-22 12:26:35.545 18234 DEBUG neutron.api.v2.base [req-efd63a02-c382-4268-8dc9-a7708a0fc205 tempest-RoutersIpV6Test-2037938894 -] Request body: {u'router': {u'external_gateway_info': {u'network_id': u'e0e7e739-d64f-4eb8-b4ec-bb3ef9623ab9'}, u'name': u'tempest-router--1366126092', u'admin_state_up': False}} prepare_request_body /opt/stack/new/neutron/neutron/api/v2/base.py:656
  ...
  2016-04-22 12:26:36.873 18234 DEBUG oslo_db.api [req-efd63a02-c382-4268-8dc9-a7708a0fc205 tempest-RoutersIpV6Test-2037938894 -] Performing DB retry for function neutron.api.v2.base._update wrapper /usr/local/lib/python2.7/dist-packages/oslo_db/api.py:150
  2016-04-22 12:26:36.874 18234 DEBUG neutron.api.v2.base [req-efd63a02-c382-4268-8dc9-a7708a0fc205 tempest-RoutersIpV6Test-2037938894 -] Request body: {u'router': {u'name': u'tempest-router--1366126092', u'admin_state_up': False}} prepare_request_body /opt/stack/new/neutron/neutron/api/v2/base.py:656

  Full log available at [1]. Trace req-efd63a02-c382-4268-8dc9-a7708a0fc205
  request processing. And [2] is failed test related to that issue.

  [1] http://logs.openstack.org/23/181023/71/check/gate-tempest-dsvm-neutron-linuxbridge/a475a39/logs/screen-q-svc.txt.gz#_2016-04-22_12_26_35_545
  [2] http://logs.openstack.org/23/181023/71/check/gate-tempest-dsvm-neutron-linuxbridge/a475a39/console.html#_2016-04-22_12_57_48_092

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