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[Sean Dague <sean@xxxxxxxxx>]

** Changed in: nova
       Status: Incomplete => Invalid

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https://bugs.launchpad.net/bugs/1340169

Title:
  failed to attach volumes to instances after configuration change &
  services restart

Status in OpenStack Compute (Nova):
  Invalid

Bug description:
  Description of problem:
  The attachment of volumes failed with the errors that are available in the log file attached. Prior to the error I was running 8 active instances, made a configuration change - increased the number of workers in the Cinder, Nova & Glance services, then restarted the services.   

  Ran the command:
  # nova volume-attach 6aac6fb6-ef22-48b0-b6ac-99bc94787422 57edbc5c-8a1f-49f2-b8bf-280ab857222d auto

  +----------+--------------------------------------+
  | Property | Value                                |
  +----------+--------------------------------------+
  | device   | /dev/vdc                             |
  | id       | 57edbc5c-8a1f-49f2-b8bf-280ab857222d |
  | serverId | 6aac6fb6-ef22-48b0-b6ac-99bc94787422 |
  | volumeId | 57edbc5c-8a1f-49f2-b8bf-280ab857222d |
  +----------+--------------------------------------+

  cinder list output:
   +--------------------------------------+-----------+---------------+------+-------------+----------+-------------+
  |                  ID                  |   Status  |  Display Name | Size | Volume Type | Bootable | Attached to |
  +--------------------------------------+-----------+---------------+------+-------------+----------+-------------+
  | 57edbc5c-8a1f-49f2-b8bf-280ab857222d | available |   dust-bowl   | 100  |     None    |  false   |             |
  | 731a118d-7bd6-4538-a3b2-60543179281e | available | bowl-the-dust | 100  |     None    |  false   |             |
  +--------------------------------------+-----------+---------------+------+-------------+----------+-------------+

  
  Version-Release number of selected component (if applicable):
  python-cinder-2014.1-7.el7ost.noarch
  openstack-nova-network-2014.1-7.el7ost.noarch
  python-novaclient-2.17.0-2.el7ost.noarch
  openstack-cinder-2014.1-7.el7ost.noarch
  openstack-nova-common-2014.1-7.el7ost.noarch
  python-cinderclient-1.0.9-1.el7ost.noarch
  openstack-nova-compute-2014.1-7.el7ost.noarch
  openstack-nova-conductor-2014.1-7.el7ost.noarch
  openstack-nova-scheduler-2014.1-7.el7ost.noarch
  openstack-nova-api-2014.1-7.el7ost.noarch
  openstack-nova-cert-2014.1-7.el7ost.noarch
  openstack-nova-novncproxy-2014.1-7.el7ost.noarch
  python-nova-2014.1-7.el7ost.noarch
  openstack-nova-console-2014.1-7.el7ost.noarch

  How reproducible:
  100%

  Steps to Reproduce:
  1. Launch instances
  2. Increase the number of workers for the Cinder, Nova & Glance
  3. Create a volume
  4. Attach the volume to the instance.

  Actual results:
  The attachment process fail.

  Expected results:
  The volume should be attached to the instance.

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