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[Matt Riedemann <mriedem.os@xxxxxxxxx>]

** Also affects: nova/rocky
   Importance: Undecided
       Status: New

** Also affects: nova/queens
   Importance: Undecided
       Status: New

** Changed in: nova/queens
       Status: New => Confirmed

** Changed in: nova/rocky
   Importance: Undecided => Low

** Changed in: nova/rocky
       Status: New => Confirmed

** Changed in: nova/queens
   Importance: Undecided => Low

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Engineering Team, which is subscribed to OpenStack Compute (nova).
https://bugs.launchpad.net/bugs/1751186

Title:
  instance_group_members also exist after delete vm

Status in OpenStack Compute (nova):
  In Progress
Status in OpenStack Compute (nova) queens series:
  Confirmed
Status in OpenStack Compute (nova) rocky series:
  Confirmed

Bug description:
  Description
  ===========
  instance_group_members record also exist in database after delete vm

  Steps to reproduce
  ==================
  1:create affinity instance_group
  2:create vm
  3:delete vm

  
  Actual result
  =============

  Database changed
  MariaDB [nova_api]> select * from instance_group_member where group_id='3';
  +---------------------+------------+-----+--------------------------------------+----------+
  | created_at          | updated_at | id  | instance_uuid                        | group_id |
  +---------------------+------------+-----+--------------------------------------+----------+
  | 2018-02-12 09:14:42 | NULL       | 106 | 3b9aa471-612f-4967-a405-574241e84aa0 |        3 |
  | 2018-02-12 09:15:14 | NULL       | 107 | e04244d9-2832-482a-9793-b5cc5b018de2 |        3 |
  | 2018-02-22 03:05:40 | NULL       | 108 | ff7a2194-9f38-4a7e-a67f-f0c53e409e9b |        3 |
  | 2018-02-22 04:07:43 | NULL       | 109 | 50000a55-8d0f-4592-ae0f-e9223c3f6a32 |        3 |
  | 2018-02-22 08:36:44 | NULL       | 110 | 4ef31c5c-d96f-4e24-ba86-75c5576ae4ed |        3 |
  | 2018-02-22 09:36:39 | NULL       | 111 | 0378c1bb-2d79-4b33-8115-77a75996af38 |        3 |
  | 2018-02-23 00:40:05 | NULL       | 112 | 08dac72d-8f04-4f7d-8b9a-60b0cf000951 |        3 |
  +---------------------+------------+-----+--------------------------------------+----------+
  7 rows in set (0.00 sec)

  MariaDB [nova_api]> use nova;
  Reading table information for completion of table and column names
  You can turn off this feature to get a quicker startup with -A

  Database changed
  MariaDB [nova]> select * from instances where uuid='3b9aa471-612f-4967-a405-574241e84aa0';
  +---------------------+---------------------+---------------------+-----+-------------+----------------------------------+----------------------------------+--------------------------------------+-----------+------------+--------------+----------+----------+-------------+----------+-----------+-------+------------+-------------+-----------+----------------+---------------------+---------------------+--------------+---------------------+-------------------+--------+---------+-------------+------------------+---------+--------------------------------------+--------------+------------------+--------------+--------------+--------------+------------+--------------------------+---------------------+----------+------------------+--------------------+-------------------+---------+--------------+-----------+-------------+---------+-----------+---------+--------------------+
  | created_at          | updated_at          | deleted_at          | id  | internal_id | user_id                          | project_id                       | image_ref                            | kernel_id | ramdisk_id | launch_index | key_name | key_data | power_state | vm_state | memory_mb | vcpus | hostname   | host        | user_data | reservation_id | launched_at         | terminated_at       | display_name | display_description | availability_zone | locked | os_type | launched_on | instance_type_id | vm_mode | uuid                                 | architecture | root_device_name | access_ip_v4 | access_ip_v6 | config_drive | task_state | default_ephemeral_device | default_swap_device | progress | auto_disk_config | shutdown_terminate | disable_terminate | root_gb | ephemeral_gb | cell_name | node        | deleted | locked_by | cleaned | ephemeral_key_uuid |
  +---------------------+---------------------+---------------------+-----+-------------+----------------------------------+----------------------------------+--------------------------------------+-----------+------------+--------------+----------+----------+-------------+----------+-----------+-------+------------+-------------+-----------+----------------+---------------------+---------------------+--------------+---------------------+-------------------+--------+---------+-------------+------------------+---------+--------------------------------------+--------------+------------------+--------------+--------------+--------------+------------+--------------------------+---------------------+----------+------------------+--------------------+-------------------+---------+--------------+-----------+-------------+---------+-----------+---------+--------------------+
  | 2018-02-12 09:14:42 | 2018-02-13 00:58:48 | 2018-02-13 00:58:48 | 255 |        NULL | 86019a90ad0b44609cca8b0eb9eee79b | 01f2572fd19743558be05561e09c3850 | 22164f51-c353-4f8a-a073-cbb2930bf25f |           |            |            0 | NULL     | NULL     |           0 | deleted  |      2048 |     1 | test-tx001 | nail-5300-2 | NULL      | r-j42bg7io     | 2018-02-12 09:14:56 | 2018-02-13 00:58:48 | test_tx001   | NULL                | test1             |      0 | NULL    | nail-5300-2 |               14 | NULL    | 3b9aa471-612f-4967-a405-574241e84aa0 | NULL         | /dev/vda         | NULL         | NULL         |              | NULL       | NULL                     | NULL                |        0 |                0 |                  0 |                 0 |      10 |            0 | NULL      | nail-5300-2 |     255 | NULL      |       1 | NULL               |
  +---------------------+---------------------+---------------------+-----+-------------+----------------------------------+----------------------------------+--------------------------------------+-----------+------------+--------------+----------+----------+-------------+----------+-----------+-------+------------+-------------+-----------+----------------+---------------------+---------------------+--------------+---------------------+-------------------+--------+---------+-------------+------------------+---------+--------------------------------------+--------------+------------------+--------------+--------------+--------------+------------+--------------------------+---------------------+----------+------------------+--------------------+-------------------+---------+--------------+-----------+-------------+---------+-----------+---------+--------------------+
  1 row in set (0.00 sec)

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