a197c8caf8
Per configuration freezer should firstly create full backup automatically if there are no backups for job and config options incremental=True, mode=cindernative are set. This patch is fixing this. From config: >> # When the option is set, freezer will perform a cindernative incremental backup instead of the default full backup. And if True, but volume do not have a base full backup, freezer will do a full backup first. >> #incremental = <None> Change-Id: Ib56c5528bcdedc34c16c209488c7439250dd85e1
108 lines
4.1 KiB
Python
108 lines
4.1 KiB
Python
# (c) Copyright 2014,2015 Hewlett-Packard Development Company, L.P.
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain 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,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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"""
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Freezer Backup modes related functions
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"""
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from oslo_config import cfg
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from oslo_log import log
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from freezer.utils import utils
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CONF = cfg.CONF
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LOG = log.getLogger(__name__)
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class BackupOs(object):
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def __init__(self, client_manager, container, storage):
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"""
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:param client_manager:
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:param container:
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:param storage:
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:type storage: freezer.swift.SwiftStorage
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:return:
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"""
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self.client_manager = client_manager
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self.container = container
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self.storage = storage
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def backup_cinder_by_glance(self, volume_id):
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"""
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Implements cinder backup:
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1) Gets a stream of the image from glance
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2) Stores resulted image to the swift as multipart object
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:param volume_id: id of volume for backup
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"""
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client_manager = self.client_manager
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cinder = client_manager.get_cinder()
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volume = cinder.volumes.get(volume_id)
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LOG.debug("Creation temporary snapshot")
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snapshot = client_manager.provide_snapshot(
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volume, "backup_snapshot_for_volume_%s" % volume_id)
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LOG.debug("Creation temporary volume")
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copied_volume = client_manager.do_copy_volume(snapshot)
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LOG.debug("Creation temporary glance image")
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image = client_manager.make_glance_image(copied_volume.id,
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copied_volume)
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LOG.debug("Download temporary glance image {0}".format(image.id))
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stream = client_manager.download_image(image)
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package = "{0}/{1}".format(volume_id, utils.DateTime.now().timestamp)
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LOG.debug("Saving image to {0}".format(self.storage.type))
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if volume.name is None:
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name = volume_id
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else:
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name = volume.name
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headers = {'x-object-meta-length': str(len(stream)),
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'volume_name': name,
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'availability_zone': volume.availability_zone
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}
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attachments = volume._info['attachments']
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if attachments:
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headers['server'] = attachments[0]['server_id']
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self.storage.add_stream(stream, package, headers=headers)
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LOG.debug("Deleting temporary snapshot")
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client_manager.clean_snapshot(snapshot)
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LOG.debug("Deleting temporary volume")
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cinder.volumes.delete(copied_volume)
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LOG.debug("Deleting temporary image")
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client_manager.get_glance().images.delete(image.id)
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def backup_cinder(self, volume_id, name=None, description=None,
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incremental=False):
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client_manager = self.client_manager
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cinder = client_manager.get_cinder()
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container = "{0}/{1}/{2}".format(self.container, volume_id,
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utils.DateTime.now().timestamp)
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if incremental:
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search_opts = {
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'volume_id': volume_id,
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'status': 'available'
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}
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backups = cinder.backups.list(search_opts=search_opts)
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if len(backups) <= 0:
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cinder.backups.create(volume_id, container, name, description,
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incremental=False, force=True)
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else:
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cinder.backups.create(volume_id, container, name, description,
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incremental=incremental, force=True)
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else:
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cinder.backups.create(volume_id, container, name, description,
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incremental=incremental, force=True)
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