Migration for detached volumes with no snaps.

[OpenStack Infra]

https://review.openstack.org/33055
commit b17834ca96d0b895afce50b219a59d01f8b24441
Author: Avishay Traeger <email address hidden>
Date: Tue Jun 18 21:53:15 2013 +0300

    Migration for detached volumes with no snaps.

    Implementation of volume migration for detached volumes with no
    snapshots. Migration is initiated by an admin API. The scheduler
    confirms that the specified destination host can accept the volume.
    The source driver is given the opportunity to migrate the volume on
    their own. Otherwise, a new volume is created on the destination, both
    volumes are attached, the data is copied over, the volumes are
    detached, the source is deleted, and the destination is renamed. In
    the database, the destination volume's attributes are copied to the
    source so that the volume-id remains unchanged, and the destination
    volume row is deleted.

    DocImpact

    Implements: bp volume-migration
    Change-Id: Ib6fcf27051f45e60aa3ba5f599e88c1421db753e

[Summer Long (slong-g)]

https://etherpad.openstack.org/havana-cinder-volume-migration

For the CLI:
$ cinder migrate <volume> <host> --force-host-copy=True|False

https://review.openstack.org/#/c/37685/3/cinderclient/v2/shell.py

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/52016

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/52016
Committed: http://github.com/openstack/openstack-manuals/commit/d5dc486a23e0bf63985c237bb32cdc44f3ff128b
Submitter: Jenkins
Branch: master

commit d5dc486a23e0bf63985c237bb32cdc44f3ff128b
Author: Summer Long <email address hidden>
Date: Wed Oct 16 16:29:20 2013 +1000

    Added information on migrating volumes

    Added 'Migrate a volume' section, and migrate option to CLI command page.

    Closes-Bug: #1201555

    Change-Id: Ic0318f64be443da46cd7f8baf6d9276021e9eaa1