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[Alan Pevec <1051881@xxxxxxxxxxxxxxxxxx>]

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

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https://bugs.launchpad.net/bugs/1051881

Title:
  Failed Live Block Migration leaves with Inconsistent Instance Status

Status in OpenStack Compute (Nova):
  Fix Released
Status in OpenStack Compute (nova) folsom series:
  Fix Released

Bug description:
  I have a master and slave devstack installation. As I issued a live
  block migrate to an invalid host, the status of the Instance was
  changed to "Migrating"

  CONFIGURATION:
  stack@DevStackOSDomU:~$ less /etc/nova/nova.conf | grep compute_driver
  compute_driver=xenapi.XenAPIDriver

  STEPS TO REPRODUCE:

  1.) You have a server
  stack@DevStackOSDomU:~/devstack$ nova list
  +--------------------------------------+------+--------+------------------+
  | ID                                   | Name | Status | Networks         |
  +--------------------------------------+------+--------+------------------+
  | 083a1d11-22f9-4e32-b476-21412b8bd725 | asd  | ACTIVE | private=10.0.0.2 |

  2.) And multiple compute resources
  stack@DevStackOSDomU:~/devstack$ nova-manage service list
  Binary           Host                   Zone  Status     State
  nova-compute     DevStackOSDomU         nova  enabled    :-)  
  ...
  nova-compute     DevStackComputeSlave   nova  enabled    :-)  

  3.) Server is running on DevStackOSDomU:
  +-------------------------------------+------------------...
  | Property                            | Value            
  +-------------------------------------+------------------...
  ...
  | OS-EXT-SRV-ATTR:host                | DevStackOSDomU   
  ...

  4.) You live migrate the server to an invalid host:
  stack@DevStackOSDomU:~/devstack$ nova live-migration 083a1d11-22f9-4e32-b476-21412b8bd725 SomeHostThatDoesNotExist --block-migrate

  5.) You get an error as expected:
  ...
  ComputeHostNotFound: Compute host SomeHostThatDoesNotExist could not be found.

   (HTTP 400) (Request-ID: req-0dbf7ad3-c45b-4924-aa3d-9b62edd95fd0)

  6.) But the servers state is changed to "MIGRATING":
  stack@DevStackOSDomU:~/devstack$ nova list
  +--------------------------------------+------+-----------+------------------+
  | ID                                   | Name | Status    | Networks         |
  +--------------------------------------+------+-----------+------------------+
  | 083a1d11-22f9-4e32-b476-21412b8bd725 | asd  | MIGRATING | private=10.0.0.2 |
  +--------------------------------------+------+-----------+------------------+

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