df6b239526
In some situations an existing rbd pool may already be populated with images that are in use. This is the case when migrating from the old topology where cinder had a direct relation to ceph-mon. Change-Id: I93eb801ca4a166f862d5d86711d9476c61851344
73 lines
2.4 KiB
Python
73 lines
2.4 KiB
Python
# Copyright 2016 Canonical Ltd
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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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from charmhelpers.core.hookenv import (
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config,
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service_name,
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is_relation_made,
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leader_get,
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)
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from charmhelpers.contrib.openstack.context import (
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OSContextGenerator,
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)
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from charmhelpers.contrib.openstack.utils import (
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get_os_codename_package,
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CompareOpenStackReleases,
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)
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CHARM_CEPH_CONF = '/var/lib/charm/{}/ceph.conf'
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def ceph_config_file():
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return CHARM_CEPH_CONF.format(service_name())
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class CephSubordinateContext(OSContextGenerator):
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interfaces = ['ceph-cinder']
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def __call__(self):
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"""
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Used to generate template context to be added to cinder.conf in the
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presence of a ceph relation.
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"""
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if not is_relation_made('ceph', 'key'):
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return {}
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service = service_name()
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os_codename = get_os_codename_package('cinder-common')
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if CompareOpenStackReleases(os_codename) >= "icehouse":
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volume_driver = 'cinder.volume.drivers.rbd.RBDDriver'
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else:
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volume_driver = 'cinder.volume.driver.RBDDriver'
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if config('rbd-pool-name'):
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pool_name = config('rbd-pool-name')
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else:
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pool_name = service
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section = {service: [('volume_backend_name', service),
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('volume_driver', volume_driver),
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('rbd_pool', pool_name),
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('rbd_user', service),
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('rbd_secret_uuid', leader_get('secret-uuid')),
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('rbd_ceph_conf', ceph_config_file())]}
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if CompareOpenStackReleases(os_codename) >= "mitaka":
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section[service].append(('report_discard_supported', True))
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if CompareOpenStackReleases(os_codename) >= "queens":
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section[service].append(('rbd_exclusive_cinder_pool', True))
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return {'cinder': {'/etc/cinder/cinder.conf': {'sections': section}}}
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