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[OpenStack Infra <1785031@xxxxxxxxxxxxxxxxxx>]

Reviewed:  https://review.openstack.org/401009
Committed: https://git.openstack.org/cgit/openstack/nova/commit/?id=c7aed3d139909913387e4ac2e771f19c9502c5b1
Submitter: Zuul
Branch:    master

commit c7aed3d139909913387e4ac2e771f19c9502c5b1
Author: Sivasathurappan Radhakrishnan <siva.radhakrishnan@xxxxxxxxx>
Date:   Wed Nov 23 00:17:47 2016 +0000

    Fix host validity check for live-migration
    
    When live migrating instance to invalid host, live migration fails
    with host not found and sets instance task state to migrating.
    
    This change handles host validity in API layer before changing instance
    task_state to 'MIGRATING' and raise proper exception on invalid host.
    
    Change-Id: I7c5e80298b9adf1bd53cc6c464a3744b5397b7e8
    Related-Bug: #1643623
    Closes-Bug: #1785031


** Changed in: nova
       Status: In Progress => Fix Released

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https://bugs.launchpad.net/bugs/1785031

Title:
  live migration to non-existing host gets instance stuck in "migrating"
  status

Status in OpenStack Compute (nova):
  Fix Released
Status in OpenStack Compute (nova) ocata series:
  Confirmed
Status in OpenStack Compute (nova) pike series:
  Confirmed
Status in OpenStack Compute (nova) queens series:
  Confirmed

Bug description:
  Description
  ===========
  When doing live-migration, if a host that does not exist or cannot be found is specified as destination, live-migration will fail and instance will get stuck in status "migrating".

  Steps to reproduce
  ==================
  nova live-migration vm non_existing_host

  Expected result
  ===============
  live-migration fails and instance rolls back to initial state

  Actual result
  =============
  live-migration fails but instance's status remains "migrating"

  Environment
  ===========
  nova --version
  10.1.0 (queens release)

  Logs & Configs
  ==============
  not related

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