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[Xuanzhou Perry Dong <oss_xzdong@xxxxxxx>]

This bug can't be reproduced in the latest master branch. This probably
is fixed by the resource tracker lock for the instance action. Propose
to close this bug.

** Changed in: nova
       Status: Confirmed => Fix Released

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https://bugs.launchpad.net/bugs/1348509

Title:
  the volume may leave over when  we delete instance whose task_state is
  block_device_mapping

Status in OpenStack Compute (nova):
  Fix Released

Bug description:
  here, two scenes may cause that a volume leaves over   when  we delete
  instance whose task_state is   block_device_mapping .The first scene
  is that using the boot volume created by image  creates instance; The
  other scene is that using image create instance  with a volume created
  through a image.

  Through analyzing, we find that the volume id is not update to
  block_device_mapping table in DB until a volume created by  an image
  through setting parameters in Blocking Device Mapping v2 is attached
  to an instance completely.If we delete the instance before the volume
  id is not update to the block_device_mapping table, the problem
  mentioned above will occur

  Two examples  to reproduce the problem on latest  icehousce:
  1. the first scene
  (1)root@devstack:~# nova list
  +----+------+--------+------------+-------------+----------+
  | ID | Name | Status | Task State | Power State | Networks |
  +----+------+--------+------------+-------------+----------+
  +----+------+--------+------------+-------------+----------+
  (2)root@devstack:~# nova boot --flavor m1.tiny --block-device id=61ebee75-5883-49a3-bf85-ad6f6c29fc1b,source=image,dest=volume,device=vda,size=1,shutdown=removed,bootindex=0 --nic net-id=354ba9ac-e6a7-4fd6-a49f-6ae18a815e95 tralon_test
  root@devstack:~# nova list
  +--------------------------------------+-------------+--------+----------------------+-------------+-------------------+
  | ID                                   | Name        | Status | Task State           | Power State | Networks          |
  +--------------------------------------+-------------+--------+----------------------+-------------+-------------------+
  | 57cbb39d-c93f-44eb-afda-9ce00110950d | tralon_test | BUILD  | block_device_mapping | NOSTATE     | private=10.0.0.20 |
  +--------------------------------------+-------------+--------+----------------------+-------------+-------------------+
  (3)root@devstack:~# nova delete tralon_test
  root@devstack:~# nova list
  +----+------+--------+------------+-------------+----------+
  | ID | Name | Status | Task State | Power State | Networks |
  +----+------+--------+------------+-------------+----------+
  +----+------+--------+------------+-------------+----------+
  (4) root@devstack:~# cinder list
  +--------------------------------------+-----------+------+------+-------------+----------+--------------------------------------+
  |                  ID                  |   Status  | Name | Size | Volume Type | Bootable |             Attached to              |
  +--------------------------------------+-----------+------+------+-------------+----------+--------------------------------------+
  | 3e5579a9-5aac-42b6-9885-441e861f6cc0 | available | None |  1   |     None    |  false   |                                      |
  | a4121322-529b-4223-ac26-0f569dc7821e | available |      |  1   |     None    |   true   |                                      |
  | a7ad846b-8638-40c1-be42-f2816638a917 |   in-use  |      |  1   |     None    |   true   | 57cbb39d-c93f-44eb-afda-9ce00110950d |
  +--------------------------------------+-----------+------+------+-------------+----------+--------------------------------------+
  we can see that the instance  57cbb39d-c93f-44eb-afda-9ce00110950d was deleted while the volume still exists with the "in-use" status

  2. the scend scene
   (1)root@devstack:~# nova list
  +----+------+--------+------------+-------------+----------+
  | ID | Name | Status | Task State | Power State | Networks |
  +----+------+--------+------------+-------------+----------+
  +----+------+--------+------------+-------------+----------+
  （2）root@devstack:~# nova boot --flavor m1.tiny --image 61ebee75-5883-49a3-bf85-ad6f6c29fc1b --nic net-id=354ba9ac-e6a7-4fd6-a49f-6ae18a815e95  --block-device id=61ebee75-5883-49a3-bf85-ad6f6c29fc1b,source=image,dest=volume,device=vdb,size=1,shutdown=removed tralon_image_instance
  root@devstack:~# nova list
  +--------------------------------------+-----------------------+--------+----------------------+-------------+-------------------+
  | ID                                   | Name                  | Status | Task State           | Power State | Networks          |
  +--------------------------------------+-----------------------+--------+----------------------+-------------+-------------------+
  | 25bcfe84-0c3f-40d3-a917-4791e092fa06 | tralon_image_instance | BUILD  | block_device_mapping | NOSTATE     | private=10.0.0.26 |
  +--------------------------------------+-----------------------+--------+----------------------+-------------+-------------------+
  （3）root@devstack:~# nova delete 25bcfe84-0c3f-40d3-a917-4791e092fa06
    ( 4 ) root@devstack:~# nova list
  +----+------+--------+------------+-------------+----------+
  | ID | Name | Status | Task State | Power State | Networks |
  +----+------+--------+------------+-------------+----------+
  +----+------+--------+------------+-------------+----------+
   (5) root@devstack:~# cinder list
  +--------------------------------------+-----------+------+------+-------------+----------+--------------------------------------+
  |                  ID                  |   Status  | Name | Size | Volume Type | Bootable |             Attached to              |
  +--------------------------------------+-----------+------+------+-------------+----------+--------------------------------------+
  | 3e5579a9-5aac-42b6-9885-441e861f6cc0 | available | None |  1   |     None    |  false   |                                      |
  | a7ad846b-8638-40c1-be42-f2816638a917 |   in-use  |      |  1   |     None    |   true   | 57cbb39d-c93f-44eb-afda-9ce00110950d |
  | f3df0f15-6c9d-4084-8fb5-dc2826bf3eb0 |   in-use  |      |  1   |     None    |   true   | 25bcfe84-0c3f-40d3-a917-4791e092fa06 |
  +--------------------------------------+-----------+------+------+-------------+----------+--------------------------------------+
  so, the instance  25bcfe84-0c3f-40d3-a917-4791e092fa06 was deleted while the volume   f3df0f15-6c9d-4084-8fb5-dc2826bf3eb0 still exists with the "in-use" status

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