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[Bug 1348509] [NEW] the volume may be legacy when we delete instance whose task_state is block_device_mapping

 

Public bug reported:

here, two scenes may cause that a volume is  legacy   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.

 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

** Affects: nova
     Importance: Undecided
         Status: New

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

Title:
  the volume may be legacy when  we delete instance whose task_state is
  block_device_mapping

Status in OpenStack Compute (Nova):
  New

Bug description:
  here, two scenes may cause that a volume is  legacy   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.

   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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