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[Alvaro Uría <1793694@xxxxxxxxxxxxxxxxxx>]

Public bug reported:

It looks like the issue fixed in bug 1652494 has been reintroduced here:
https://github.com/openstack/horizon/blob/stable/queens/openstack_dashboard/dashboards/admin/hypervisors/compute/forms.py#L49:L53

When "target host" is set to "Select a target host", Nova API logs show:
"""
body: {"evacuate": {"host": "", "onSharedStorage": true}}
Returning 400 to user: Invalid input for field/attribute host. Value: . u'' is too short
"""

When a target host is selected, Nova API logs show:
"""
body: {"evacuate": {"host": "target-hostnameXX", "onSharedStorage": false}}
"""

In the first case, the expectation is to have both host and
onSharedStorage set to False. The latter was never enabled, but it
looked so in the first test when it shouldn't.

Horizon is running on Ubuntu Xenial,
openstack-dashboard 3:13.0.1-0ubuntu1~cloud0

** Affects: horizon
     Importance: Undecided
         Status: New


** Tags: canonical-bootstack

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https://bugs.launchpad.net/bugs/1793694

Title:
  [Queens] evacuate fails if target is not selected

Status in OpenStack Dashboard (Horizon):
  New

Bug description:
  It looks like the issue fixed in bug 1652494 has been reintroduced here:
  https://github.com/openstack/horizon/blob/stable/queens/openstack_dashboard/dashboards/admin/hypervisors/compute/forms.py#L49:L53

  When "target host" is set to "Select a target host", Nova API logs show:
  """
  body: {"evacuate": {"host": "", "onSharedStorage": true}}
  Returning 400 to user: Invalid input for field/attribute host. Value: . u'' is too short
  """

  When a target host is selected, Nova API logs show:
  """
  body: {"evacuate": {"host": "target-hostnameXX", "onSharedStorage": false}}
  """

  In the first case, the expectation is to have both host and
  onSharedStorage set to False. The latter was never enabled, but it
  looked so in the first test when it shouldn't.

  Horizon is running on Ubuntu Xenial,
  openstack-dashboard 3:13.0.1-0ubuntu1~cloud0

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