Marker reset option for nova-manage map_instances

[Surya Seetharaman]

Currently nova-manage map_instances uses a marker set-up by which repeated runs of the command will start from where the last run finished. Even deleting the cell with the instance_mappings will not remove the marker since the marker mapping has a NULL cell_mapping field. There needs to be a way to reset this marker so that the user can run map_instances from the beginning instead of the map_instances command saying "all instances are already mapped" as is the current behavior.

Solution :

Add a --reset flag to "nova-manage map_instances"

[Surya Seetharaman (tssurya)]

This is proposed following the discussion in the Nova CellV2 meeting on 24th Jan 2018 - http://eavesdrop.openstack.org/meetings/nova_cells/2018/nova_cells.2018-01-24-21.00.log.html#l-34

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/539501

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/539501
Committed: https://git.openstack.org/cgit/openstack/nova/commit/?id=98163f98b700840f50c689e4a3aed7e28dd0c1ef
Submitter: Zuul
Branch: master

commit 98163f98b700840f50c689e4a3aed7e28dd0c1ef
Author: Surya Seetharaman <email address hidden>
Date: Wed Jan 31 12:39:34 2018 +0100

    Marker reset option for nova-manage map_instances

    Currently nova-manage map_instances uses a marker set-up by which repeated
    runs of the command will start from where the last run finished. Even
    deleting the cell with the instance_mappings will not remove the marker
    since the marker mapping has a NULL cell_mapping field. There needs to be
    a way to reset this marker so that the user can run map_instances from the
    beginning instead of the map_instances command saying "all instances are
    already mapped" as is the current behavior.

    Change-Id: Ic9a0bda9314cc1caed993db101bf6f874c0a0ae8
    Closes-Bug: #1745358

[OpenStack Infra (hudson-openstack)]

This issue was fixed in the openstack/nova 18.0.0.0b1 development milestone.