63 lines
2.3 KiB
Python
63 lines
2.3 KiB
Python
# Copyright 2015, 2018 IBM Corp.
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#
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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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"""Utilities related to glance image management for the PowerVM driver."""
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from nova import utils
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def stream_blockdev_to_glance(context, image_api, image_id, metadata, devpath):
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"""Stream the entire contents of a block device to a glance image.
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:param context: Nova security context.
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:param image_api: Handle to the glance image API.
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:param image_id: UUID of the prepared glance image.
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:param metadata: Dictionary of metadata for the image.
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:param devpath: String path to device file of block device to be uploaded,
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e.g. "/dev/sde".
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"""
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# Make the device file owned by the current user for the duration of the
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# operation.
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with utils.temporary_chown(devpath), open(devpath, 'rb') as stream:
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# Stream it. This is synchronous.
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image_api.update(context, image_id, metadata, stream)
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def generate_snapshot_metadata(context, image_api, image_id, instance):
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"""Generate a metadata dictionary for an instance snapshot.
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:param context: Nova security context.
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:param image_api: Handle to the glance image API.
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:param image_id: UUID of the prepared glance image.
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:param instance: The Nova instance whose disk is to be snapshotted.
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:return: A dict of metadata suitable for image_api.update.
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"""
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image = image_api.get(context, image_id)
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# TODO(esberglu): Update this to v2 metadata
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metadata = {
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'name': image['name'],
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'status': 'active',
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'disk_format': 'raw',
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'container_format': 'bare',
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'properties': {
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'image_location': 'snapshot',
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'image_state': 'available',
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'owner_id': instance.project_id,
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}
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}
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return metadata
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