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[Matt Riedemann <mriedem@xxxxxxxxxx>]

This is working as designed.  The reason the change from the ironic side
to the nova side isn't immediate is because (1) the ironic driver in
nova doesn't implement the lifecycle event handling part of the virt
driver API (libvirt and hyper-v implement instance lifecycle event
handling) and (2) the _sync_power_states periodic task runs on a cron
which is by default 10 minutes:

https://github.com/openstack/nova/blob/master/nova/compute/manager.py#L152

The config option is "sync_power_state_interval".

So you have to wait by default at most 10 minutes before the power state
change on the ironic side is processed on the nova side via that task.

This could be made more automatic if the ironic driver in nova
implemented the lifecycle event handling code in the virt driver, but
that would require a blueprint and spec, so it's not a bug.

** Changed in: nova
       Status: New => Invalid

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https://bugs.launchpad.net/bugs/1498756

Title:
  Power state inconsistence after using Ironic node-set-power-state

Status in Ironic:
  Invalid
Status in OpenStack Compute (nova):
  Invalid

Bug description:
  Here is  the steps to reproduce. I use the devstack to setup ironic
  with pxe deployment.

  ubuntu@devstack:~/devstack$ ironic node-list
  +--------------------------------------+--------+--------------------------------------+-------------+--------------------+-------------+
  | UUID                                 | Name   | Instance UUID                        | Power State | Provisioning State | Maintenance |
  +--------------------------------------+--------+--------------------------------------+-------------+--------------------+-------------+
  | e5f9a29e-c50c-4c13-9b8c-c6b8a0767b0a | node-0 | e8e2b89c-530f-43d6-b4e7-965a7864417e | power on    | active             | False       |
  | e4aab274-077c-4238-a509-d17f6c5b767a | node-1 | None                                 | power on    | available          | False       |
  | 5d0db590-e9c3-46af-8b5b-7540d0a3faa7 | node-2 | 8da05834-2c43-430c-bba5-f136b6db872b | power on    | active             | False       |
  +--------------------------------------+--------+--------------------------------------+-------------+--------------------+-------------+
  ubuntu@devstack:~/devstack$ ironic node-set-power-state node-0 off
  ubuntu@devstack:~/devstack$ ironic node-list
  +--------------------------------------+--------+--------------------------------------+-------------+--------------------+-------------+
  | UUID                                 | Name   | Instance UUID                        | Power State | Provisioning State | Maintenance |
  +--------------------------------------+--------+--------------------------------------+-------------+--------------------+-------------+
  | e5f9a29e-c50c-4c13-9b8c-c6b8a0767b0a | node-0 | e8e2b89c-530f-43d6-b4e7-965a7864417e | power off   | active             | False       |
  | e4aab274-077c-4238-a509-d17f6c5b767a | node-1 | None                                 | power on    | available          | False       |
  | 5d0db590-e9c3-46af-8b5b-7540d0a3faa7 | node-2 | 8da05834-2c43-430c-bba5-f136b6db872b | power on    | active             | False       |
  +--------------------------------------+--------+--------------------------------------+-------------+--------------------+-------------+

  The expected result is that I can see shutdown from 'nova list'. However, the result is as following.
  ubuntu@devstack:~/devstack$ nova list
  +--------------------------------------+------------+--------+------------+-------------+------------------------------------------------------+
  | ID                                   | Name       | Status | Task State | Power State | Networks                                             |
  +--------------------------------------+------------+--------+------------+-------------+------------------------------------------------------+
  | 8da05834-2c43-430c-bba5-f136b6db872b | testing-01 | ACTIVE | -          | Running     | private=10.1.0.5, fdc6:d93f:45dd:0:5054:ff:fe70:ffe4 |
  | e8e2b89c-530f-43d6-b4e7-965a7864417e | testing-02 | ACTIVE | -          | Running     | private=10.1.0.6, fdc6:d93f:45dd:0:5054:ff:fec5:254c |
  +--------------------------------------+------------+--------+------------+-------------+------------------------------------------------------+

  It doesn't not change the state immediately. After a while, it changes
  to shutdown in nova list.

  What confuse me is that when I change the power state from nova, it
  does change the state from ironic side.

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