e6a3206523
Implements: blueprint add-export-import-volumes
Volume manage/unmanage support.
This change adds two new API extensions:
volume_unmanage.py:
Adds an "os-unmanage" action on an existing volume, which causes a
delete operation to flow through the stack, with a flag that indicates
that a different method ("unmanage") should be called on the driver
instead of delete_volume. A default, empty, implementation of unmanage
is provided.
volume_manage.py
Adds a new "os-manage-volume" API. A POST to this URI is very similar to
volume creation, except that the images, snapshots and existing volumes
cannot be specified. Instead the following must be specified:
host: Cinder host on which the existing storage resides
ref: Driver-specific reference to the existing storage object
name, description, volume_type, metadata and availability_zone are
supported as per a normal volume creation.
In order to support some re-use between volume_manage and the regular
volume creation, add_visible_admin_metadata has been factored out into
the cinder utils.py module.
The rest of the changes are just the implications of the host/ref
specification moving through the api, rpcapi, manager and flow (API and
Manager) layers. Management of an existing volume causes the
manage_existing_get_size() and manage_existing() methods to be called on
the driver, and a reference LVM implementation is provided.
brick/local_dev/lvm.py now includes a method to rename an LV.
Change-Id: Ifc5255b2fd277c0f60d25fc82a777e405b861320
79 lines
2.8 KiB
Python
Executable File
79 lines
2.8 KiB
Python
Executable File
# Copyright 2014 IBM Corp.
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#
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# Licensed under the Apache License, Version 2.0 (the "License"); you may
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# not use this file except in compliance with the License. You may obtain
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# a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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# License for the specific language governing permissions and limitations
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# under the License.
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import webob
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from webob import exc
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from cinder.api import extensions
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from cinder.api.openstack import wsgi
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from cinder import exception
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from cinder.openstack.common import log as logging
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from cinder import volume
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LOG = logging.getLogger(__name__)
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authorize = extensions.extension_authorizer('volume', 'volume_unmanage')
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class VolumeUnmanageController(wsgi.Controller):
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def __init__(self, *args, **kwargs):
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super(VolumeUnmanageController, self).__init__(*args, **kwargs)
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self.volume_api = volume.API()
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@wsgi.response(202)
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@wsgi.action('os-unmanage')
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def unmanage(self, req, id, body):
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"""Stop managing a volume.
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This action is very much like a delete, except that a different
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method (unmanage) is called on the Cinder driver. This has the effect
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of removing the volume from Cinder management without actually
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removing the backend storage object associated with it.
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There are no required parameters.
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A Not Found error is returned if the specified volume does not exist.
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A Bad Request error is returned if the specified volume is still
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attached to an instance.
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"""
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context = req.environ['cinder.context']
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authorize(context)
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LOG.audit(_("Unmanage volume with id: %s"), id, context=context)
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try:
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vol = self.volume_api.get(context, id)
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self.volume_api.delete(context, vol, unmanage_only=True)
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except exception.NotFound:
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msg = _("Volume could not be found")
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raise exc.HTTPNotFound(explanation=msg)
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except exception.VolumeAttached:
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msg = _("Volume cannot be deleted while in attached state")
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raise exc.HTTPBadRequest(explanation=msg)
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return webob.Response(status_int=202)
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class Volume_unmanage(extensions.ExtensionDescriptor):
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"""Enable volume unmanage operation."""
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name = "VolumeUnmanage"
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alias = "os-volume-unmanage"
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namespace = "http://docs.openstack.org/volume/ext/volume-unmanage/api/v1.1"
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updated = "2012-05-31T00:00:00+00:00"
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def get_controller_extensions(self):
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controller = VolumeUnmanageController()
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extension = extensions.ControllerExtension(self, 'volumes', controller)
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return [extension]
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