3e1a3c9f82
This enables Ironic to boot bare metal machines from Cinder volume. Ironic virt driver needs to pass the remote volume connection information down to Ironic when spawning a new bare metal instance requested to boot from a Cinder volume. This implements get_volume_connector method for the Ironic driver. It will get connector information from the Ironic service and pass it to Cinder's initialize_connection method for attached volumes. And then it puts the returned value into Ironic. This patch changes the required Ironic API version to 1.32 for using new API for volume resources. Co-Authored-By: Satoru Moriya <satoru.moriya.br@hitachi.com> Co-Authored-By: Hironori Shiina <shiina.hironori@jp.fujitsu.com> Change-Id: I319779af265684715f0142577a217ab66632bf4f Implements: blueprint ironic-boot-from-volume
112 lines
4.4 KiB
Python
112 lines
4.4 KiB
Python
# Copyright 2014 Hewlett-Packard Development Company, L.P.
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# Copyright 2014 Red Hat, Inc.
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# All Rights Reserved.
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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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#
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"""
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Helper classes for Ironic HTTP PATCH creation.
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"""
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from oslo_serialization import jsonutils
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import nova.conf
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CONF = nova.conf.CONF
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def create(node):
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"""Create an instance of the appropriate DriverFields class.
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:param node: a node object returned from ironicclient
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:returns: A GenericDriverFields instance.
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"""
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return GenericDriverFields(node)
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class GenericDriverFields(object):
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def __init__(self, node):
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self.node = node
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def get_deploy_patch(self, instance, image_meta, flavor,
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preserve_ephemeral=None, boot_from_volume=False):
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"""Build a patch to add the required fields to deploy a node.
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:param instance: the instance object.
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:param image_meta: the nova.objects.ImageMeta object instance
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:param flavor: the flavor object.
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:param preserve_ephemeral: preserve_ephemeral status (bool) to be
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specified during rebuild.
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:param boot_from_volume: True if node boots from volume. Then,
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image_source is not passed to ironic.
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:returns: a json-patch with the fields that needs to be updated.
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"""
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patch = []
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if not boot_from_volume:
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patch.append({'path': '/instance_info/image_source', 'op': 'add',
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'value': image_meta.id})
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patch.append({'path': '/instance_info/root_gb', 'op': 'add',
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'value': str(instance.flavor.root_gb)})
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patch.append({'path': '/instance_info/swap_mb', 'op': 'add',
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'value': str(flavor['swap'])})
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patch.append({'path': '/instance_info/display_name',
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'op': 'add', 'value': instance.display_name})
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patch.append({'path': '/instance_info/vcpus', 'op': 'add',
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'value': str(instance.flavor.vcpus)})
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patch.append({'path': '/instance_info/nova_host_id', 'op': 'add',
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'value': instance.get('host')})
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patch.append({'path': '/instance_info/memory_mb', 'op': 'add',
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'value': str(instance.flavor.memory_mb)})
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patch.append({'path': '/instance_info/local_gb', 'op': 'add',
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'value': str(self.node.properties.get('local_gb', 0))})
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if instance.flavor.ephemeral_gb:
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patch.append({'path': '/instance_info/ephemeral_gb',
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'op': 'add',
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'value': str(instance.flavor.ephemeral_gb)})
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if CONF.default_ephemeral_format:
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patch.append({'path': '/instance_info/ephemeral_format',
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'op': 'add',
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'value': CONF.default_ephemeral_format})
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if preserve_ephemeral is not None:
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patch.append({'path': '/instance_info/preserve_ephemeral',
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'op': 'add', 'value': str(preserve_ephemeral)})
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capabilities = {}
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# read the flavor and get the extra_specs value.
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extra_specs = flavor.get('extra_specs')
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# scan through the extra_specs values and ignore the keys
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# not starting with keyword 'capabilities'.
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for key, val in extra_specs.items():
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if not key.startswith('capabilities:'):
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continue
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# split the extra_spec key to remove the keyword
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# 'capabilities' and get the actual key.
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capabilities_string, capabilities_key = key.split(':', 1)
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if capabilities_key:
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capabilities[capabilities_key] = val
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if capabilities:
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patch.append({'path': '/instance_info/capabilities',
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'op': 'add', 'value': jsonutils.dumps(capabilities)})
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return patch
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