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[gouzongmei <gouzongmei@xxxxxxxxxx>]

Public bug reported:

Environment:
1. A  lvm volume named "vol1" is created, the volume id is "7ee430ee-0ee8-4718-90bc-21f6b47222d9".
2. A server named "gzm" is running.

Test Steps:
Execute command "nova volume-attach gzm 7ee430ee-0ee8-4718-90bc-21f6b47222d9 auto", and then return :
+----------+--------------------------------------+
| Property | Value                                |
+----------+--------------------------------------+
| device   | /dev/hda                           |
| serverId | ec9ce811-4f43-4bc1-96d9-56fe65e5b63f |
| id       | 7ee430ee-0ee8-4718-90bc-21f6b47222d9 |
| volumeId | 7ee430ee-0ee8-4718-90bc-21f6b47222d9 |
+----------+--------------------------------------+

In fact,  when I inspected the xml of the server, I found the volume "vol1" is not attached success. 
Besides, my first vol's(volume created when creating the server) device name was "hda"(<target dev='vda' bus='virtio'/> in xml).

** Affects: nova
     Importance: Undecided
         Status: New

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Engineering Team, which is subscribed to OpenStack Compute (nova).
https://bugs.launchpad.net/bugs/1312164

Title:
  using <device>  as "auto" in "nova volume-attach" command   caused
  attach fail

Status in OpenStack Compute (Nova):
  New

Bug description:
  Environment:
  1. A  lvm volume named "vol1" is created, the volume id is "7ee430ee-0ee8-4718-90bc-21f6b47222d9".
  2. A server named "gzm" is running.

  Test Steps:
  Execute command "nova volume-attach gzm 7ee430ee-0ee8-4718-90bc-21f6b47222d9 auto", and then return :
  +----------+--------------------------------------+
  | Property | Value                                |
  +----------+--------------------------------------+
  | device   | /dev/hda                           |
  | serverId | ec9ce811-4f43-4bc1-96d9-56fe65e5b63f |
  | id       | 7ee430ee-0ee8-4718-90bc-21f6b47222d9 |
  | volumeId | 7ee430ee-0ee8-4718-90bc-21f6b47222d9 |
  +----------+--------------------------------------+

  In fact,  when I inspected the xml of the server, I found the volume "vol1" is not attached success. 
  Besides, my first vol's(volume created when creating the server) device name was "hda"(<target dev='vda' bus='virtio'/> in xml).

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