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[Bug 1482191] Re: Error message is too generic when boot with volume creation fails with exceeded quota

 

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

** Changed in: nova
    Milestone: None => liberty-3

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https://bugs.launchpad.net/bugs/1482191

Title:
  Error message is too generic when boot with volume creation fails with
  exceeded quota

Status in OpenStack Compute (nova):
  Fix Released

Bug description:
  The message is "InvalidBDM: Block Device Mapping is Invalid."
  Exceeding quota is a problem that should be solved by the user, not a
  cloud admin. So the message should be one telling the user that the
  error was caused by quota.

  Example:

  A user has 2 GB of volume quota.

  ubuntu@dev-1:~/devstack$ cinder quota-usage b926f718a7d345cb9f57b4e4dc98f674
  +-----------------------+--------+----------+-------+
  |          Type         | In_use | Reserved | Limit |
  +-----------------------+--------+----------+-------+
  |    backup_gigabytes   |   0    |    0     |  1000 |
  |        backups        |   0    |    0     |   10  |
  |       gigabytes       |   0    |    0     |   2   | 
  | gigabytes_lvmdriver-1 |   0    |    0     |   2   |
  |  per_volume_gigabytes |   0    |    0     |   -1  |
  |       snapshots       |   0    |    0     |   10  |
  | snapshots_lvmdriver-1 |   0    |    0     |   -1  |
  |        volumes        |   0    |    0     |   10  |
  |  volumes_lvmdriver-1  |   0    |    0     |   -1  |
  +-----------------------+--------+----------+-------+

  Then, create an instance with 3 GB volume creation

  ubuntu@dev-1:~/devstack$ nova boot --flavor m1.tiny --block-device source=image,id=535ec234-5522-4cdc-598-4050a62d5135,dest=volume,size=3,bootindex=0 vb
  +--------------------------------------+-------------------------------------------------+
  | Property                             | Value                                           |
  +--------------------------------------+-------------------------------------------------+
  | OS-DCF:diskConfig                    | MANUAL                                          |
  | OS-EXT-AZ:availability_zone          | nova                                            |
  | OS-EXT-STS:power_state               | 0                                               |
  | OS-EXT-STS:task_state                | scheduling                                      |
  | OS-EXT-STS:vm_state                  | building                                        |
  | OS-SRV-USG:launched_at               | -                                               |
  | OS-SRV-USG:terminated_at             | -                                               |
  | accessIPv4                           |                                                 |
  | accessIPv6                           |                                                 |
  | adminPass                            | znMzRMuCJx99                                    |
  | config_drive                         |                                                 |
  | created                              | 2015-08-06T11:34:53Z                            |
  | flavor                               | m1.tiny (1)                                     |
  | hostId                               |                                                 |
  | id                                   | 5934a4f5-4d89-465b-956b-f53b2ebdad43            |
  | image                                | Attempt to boot from volume - no image supplied |
  | key_name                             | -                                               |
  | metadata                             | {}                                              |
  | name                                 | vb                                              |
  | os-extended-volumes:volumes_attached | []                                              |
  | progress                             | 0                                               |
  | security_groups                      | default                                         |
  | status                               | BUILD                                           |
  | tenant_id                            | b926f718a7d345cb9f57b4e4dc98f674                |
  | updated                              | 2015-08-06T11:34:54Z                            |
  | user_id                              | 386255bb3f05410dae7856633f0e611e                |
  +--------------------------------------+-------------------------------------------------+

  Fails with a message "Failure prepping block device". It is difficult
  to know the quota is a cause of the error by seeing the message.

  ubuntu@dev-1:~/devstack$ nova show vb
  +--------------------------------------+---------------------------------------------------------------------------------------------------------------------------------------------------------------+
  | Property                             | Value                                                                                                                                                         |
  +--------------------------------------+---------------------------------------------------------------------------------------------------------------------------------------------------------------+
  | OS-DCF:diskConfig                    | MANUAL                                                                                                                                                        |
  | OS-EXT-AZ:availability_zone          | nova                                                                                                                                                          |
  | OS-EXT-STS:power_state               | 0                                                                                                                                                             |
  | OS-EXT-STS:task_state                | block_device_mapping                                                                                                                                          |
  | OS-EXT-STS:vm_state                  | error                                                                                                                                                         |
  | OS-SRV-USG:launched_at               | -                                                                                                                                                             |
  | OS-SRV-USG:terminated_at             | -                                                                                                                                                             |
  | accessIPv4                           |                                                                                                                                                               |
  | accessIPv6                           |                                                                                                                                                               |
  | config_drive                         |                                                                                                                                                               |
  | created                              | 2015-08-06T11:34:53Z                                                                                                                                          |
  | fault                                | {"message": "Build of instance 5934a4f5-4d89-465b-956b-f53b2ebdad43 aborted: Failure prepping block device.", "code": 500, "created": "2015-08-06T11:34:58Z"} |
  | flavor                               | m1.tiny (1)                                                                                                                                                   |
  | hostId                               | c44fcd09b907ebe036f7d5e486e6392f06a46af3a333abd0160c972d                                                                                                      |
  | id                                   | 5934a4f5-4d89-465b-956b-f53b2ebdad43                                                                                                                          |
  | image                                | Attempt to boot from volume - no image supplied                                                                                                               |
  | key_name                             | -                                                                                                                                                             |
  | metadata                             | {}                                                                                                                                                            |
  | name                                 | vb                                                                                                                                                            |
  | os-extended-volumes:volumes_attached | []                                                                                                                                                            |
  | private network                      | 10.0.0.2                                                                                                                                                      |
  | security_groups                      | default                                                                                                                                                       |
  | status                               | ERROR                                                                                                                                                         |
  | tenant_id                            | b926f718a7d345cb9f57b4e4dc98f674                                                                                                                              |
  | updated                              | 2015-08-06T11:34:58Z                                                                                                                                          |
  | user_id                              | 386255bb3f05410dae7856633f0e611e                                                                                                                              |
  +--------------------------------------+---------------------------------------------------------------------------------------------------------------------------------------------------------------+

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