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[haruka tanizawa <1377161@xxxxxxxxxxxxxxxxxx>]

** Also affects: python-cinderclient
   Importance: Undecided
       Status: New

** Also affects: cinder
   Importance: Undecided
       Status: New

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https://bugs.launchpad.net/bugs/1377161

Title:
  If volume-attach API is failed, Block Device Mapping record will
  remain

Status in Cinder:
  New
Status in OpenStack Compute (Nova):
  In Progress
Status in Python client library for Cinder:
  New

Bug description:
  I executed volume-attach API(nova V2 API) when RabbitMQ was down.
  As result of above API execution, volume-attach API was failed and volume's status is still available.
  But, block device mapping record remains on nova DB.
  This condition is inconsistency.

  And, remained block device mapping record maybe cause some problems.
  (I'm researching now.)

  I used openstack juno-3.

  ------------------------------------------------------------------------------------------------------------------
  * Before executing volume-attach API:

  $ nova list
  +--------------------------------------+--------+--------+------------+-------------+--------------------+
  | ID                                   | Name   | Status | Task State | Power State | Networks           |
  +--------------------------------------+--------+--------+------------+-------------+--------------------+
  | 0b529526-4c8d-4650-8295-b7155a977ba7 | testVM | ACTIVE | -          | Running     | private=10.0.0.104 |
  +--------------------------------------+--------+--------+------------+-------------+--------------------+
  $ cinder list
  +--------------------------------------+-----------+--------------+------+-------------+----------+-------------+
  |                  ID                  |   Status  | Display Name | Size | Volume Type | Bootable | Attached to |
  +--------------------------------------+-----------+--------------+------+-------------+----------+-------------+
  | e93478bf-ee37-430f-93df-b3cf26540212 | available |     None     |  1   |     None    |  false   |             |
  +--------------------------------------+-----------+--------------+------+-------------+----------+-------------+
  devstack@ubuntu-14-04-01-64-juno3-01:~$

  mysql> select * from block_device_mapping where instance_uuid = '0b529526-4c8d-4650-8295-b7155a977ba7';
  +---------------------+---------------------+------------+-----+-------------+-----------------------+-------------+-----------+-------------+-----------+-----------------+--------------------------------------+---------+-------------+------------------+--------------+-------------+----------+------------+--------------------------------------+
  | created_at          | updated_at          | deleted_at | id  | device_name | delete_on_termination | snapshot_id | volume_id | volume_size | no_device | connection_info | instance_uuid                        | deleted | source_type | destination_type | guest_format | device_type | disk_bus | boot_index | image_id                             |
  +---------------------+---------------------+------------+-----+-------------+-----------------------+-------------+-----------+-------------+-----------+-----------------+--------------------------------------+---------+-------------+------------------+--------------+-------------+----------+------------+--------------------------------------+
  | 2014-10-02 18:36:08 | 2014-10-02 18:36:10 | NULL       | 145 | /dev/vda    |                     1 | NULL        | NULL      |        NULL |      NULL | NULL            | 0b529526-4c8d-4650-8295-b7155a977ba7 |       0 | image       | local            | NULL         | disk        | NULL     |          0 | c1d264fd-c559-446e-9b94-934ba8249ae1 |
  +---------------------+---------------------+------------+-----+-------------+-----------------------+-------------+-----------+-------------+-----------+-----------------+--------------------------------------+---------+-------------+------------------+--------------+-------------+----------+------------+--------------------------------------+
  1 row in set (0.00 sec)

  * After executing volume-attach API:
  $ nova list --all-t
  +--------------------------------------+--------+--------+------------+-------------+--------------------+
  | ID                                   | Name   | Status | Task State | Power State | Networks           |
  +--------------------------------------+--------+--------+------------+-------------+--------------------+
  | 0b529526-4c8d-4650-8295-b7155a977ba7 | testVM | ACTIVE | -          | Running     | private=10.0.0.104 |
  +--------------------------------------+--------+--------+------------+-------------+--------------------+
  $ cinder list
  +--------------------------------------+-----------+--------------+------+-------------+----------+-------------+
  |                  ID                  |   Status  | Display Name | Size | Volume Type | Bootable | Attached to |
  +--------------------------------------+-----------+--------------+------+-------------+----------+-------------+
  | e93478bf-ee37-430f-93df-b3cf26540212 | available |     None     |  1   |     None    |  false   |             |
  +--------------------------------------+-----------+--------------+------+-------------+----------+-------------+

  mysql> select * from block_device_mapping where instance_uuid = '0b529526-4c8d-4650-8295-b7155a977ba7';
  +---------------------+---------------------+------------+-----+-------------+-----------------------+-------------+--------------------------------------+-------------+-----------+-----------------+--------------------------------------+---------+-------------+------------------+--------------+-------------+----------+------------+--------------------------------------+
  | created_at          | updated_at          | deleted_at | id  | device_name | delete_on_termination | snapshot_id | volume_id                            | volume_size | no_device | connection_info | instance_uuid                        | deleted | source_type | destination_type | guest_format | device_type | disk_bus | boot_index | image_id                             |
  +---------------------+---------------------+------------+-----+-------------+-----------------------+-------------+--------------------------------------+-------------+-----------+-----------------+--------------------------------------+---------+-------------+------------------+--------------+-------------+----------+------------+--------------------------------------+
  | 2014-10-02 18:36:08 | 2014-10-02 18:36:10 | NULL       | 145 | /dev/vda    |                     1 | NULL        | NULL                                 |        NULL |      NULL | NULL            | 0b529526-4c8d-4650-8295-b7155a977ba7 |       0 | image       | local            | NULL         | disk        | NULL     |          0 | c1d264fd-c559-446e-9b94-934ba8249ae1 |
  | 2014-10-02 18:45:28 | NULL                | NULL       | 146 | /dev/vdb    |                     0 | NULL        | 0b529526-4c8d-4650-8295-b7155a977ba7 |        NULL |      NULL | NULL            | 0b529526-4c8d-4650-8295-b7155a977ba7 |       0 | volume      | volume           | NULL         | NULL        | NULL     |       NULL | NULL                                 |
  +---------------------+---------------------+------------+-----+-------------+-----------------------+-------------+--------------------------------------+-------------+-----------+-----------------+--------------------------------------+---------+-------------+------------------+--------------+-------------+----------+------------+--------------------------------------+
  2 rows in set (0.00 sec)

  ------------------------------------------------------------------------------------------------------------------

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