Reintroduce the StorPool driver
Change-Id: I5188e66d9a9204fc9fa15785d0ef3cf10e57ffb5 Implements: blueprint storpool-block-driver-reintroduce DocImpact
This commit is contained in:
Peter Penchev
parent
016431808c
commit
b5832afb3a
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@ -1211,6 +1211,12 @@ class XtremIOSnapshotsLimitExceeded(VolumeDriverException):
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message = _("Exceeded the limit of snapshots per volume")
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# StorPool driver
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class StorPoolConfigurationInvalid(CinderException):
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message = _("Invalid parameter %(param)s in the %(section)s section "
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"of the /etc/storpool.conf file: %(error)s")
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# DOTHILL drivers
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class DotHillInvalidBackend(VolumeDriverException):
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message = _("Backend doesn't exist (%(backend)s)")
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@ -155,6 +155,7 @@ from cinder.volume.drivers.san.hp import hpmsa_common as \
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from cinder.volume.drivers.san import san as cinder_volume_drivers_san_san
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from cinder.volume.drivers import sheepdog as cinder_volume_drivers_sheepdog
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from cinder.volume.drivers import solidfire as cinder_volume_drivers_solidfire
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from cinder.volume.drivers import storpool as cinder_volume_drivers_storpool
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from cinder.volume.drivers.synology import synology_common as \
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cinder_volume_drivers_synology_synologycommon
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from cinder.volume.drivers import tintri as cinder_volume_drivers_tintri
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@ -257,6 +258,7 @@ def list_opts():
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instorage_mcs_opts,
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cinder_volume_drivers_inspur_instorage_instorageiscsi.
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instorage_mcs_iscsi_opts,
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cinder_volume_drivers_storpool.storpool_opts,
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cinder_volume_manager.volume_manager_opts,
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cinder_wsgi_eventletserver.socket_opts,
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)),
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@ -0,0 +1,510 @@
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# Copyright 2014 - 2017 StorPool
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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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import re
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import sys
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import ddt
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import mock
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from oslo_utils import units
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fakeStorPool = mock.Mock()
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fakeStorPool.spopenstack = mock.Mock()
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fakeStorPool.spapi = mock.Mock()
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fakeStorPool.spconfig = mock.Mock()
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fakeStorPool.sptypes = mock.Mock()
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sys.modules['storpool'] = fakeStorPool
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from cinder import exception
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from cinder import test
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from cinder.volume import configuration as conf
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from cinder.volume.drivers import storpool as driver
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volume_types = {
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1: {},
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2: {'storpool_template': 'ssd'},
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3: {'storpool_template': 'hdd'}
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}
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volumes = {}
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snapshots = {}
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def MockExtraSpecs(vtype):
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return volume_types[vtype]
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def mock_volume_types(f):
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def _types_inner_inner1(inst, *args, **kwargs):
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@mock.patch('cinder.volume.volume_types.get_volume_type_extra_specs',
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new=MockExtraSpecs)
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def _types_inner_inner2():
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return f(inst, *args, **kwargs)
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return _types_inner_inner2()
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return _types_inner_inner1
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def volumeName(vid):
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return 'os--volume--{id}'.format(id=vid)
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def snapshotName(vtype, vid):
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return 'os--snap--{t}--{id}'.format(t=vtype, id=vid)
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class MockDisk(object):
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def __init__(self, diskId):
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self.id = diskId
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self.generationLeft = -1
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self.agCount = 14
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self.agFree = 12
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self.agAllocated = 1
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class MockVolume(object):
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def __init__(self, v):
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self.name = v['name']
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class MockTemplate(object):
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def __init__(self, name):
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self.name = name
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class MockApiError(Exception):
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def __init__(self, msg):
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super(MockApiError, self).__init__(msg)
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class MockAPI(object):
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def __init__(self):
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self._disks = {diskId: MockDisk(diskId) for diskId in (1, 2, 3, 4)}
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self._disks[3].generationLeft = 42
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self._templates = [MockTemplate(name) for name in ('ssd', 'hdd')]
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def setlog(self, log):
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self._log = log
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def disksList(self):
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return self._disks
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def snapshotCreate(self, vname, snap):
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snapshots[snap['name']] = dict(volumes[vname])
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def snapshotDelete(self, name):
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del snapshots[name]
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def volumeCreate(self, v):
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if v['name'] in volumes:
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raise MockApiError('volume already exists')
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volumes[v['name']] = v
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def volumeDelete(self, name):
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del volumes[name]
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def volumesList(self):
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return [MockVolume(v[1]) for v in volumes.items()]
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def volumeTemplatesList(self):
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return self._templates
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def volumesReassign(self, json):
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pass
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def volumeUpdate(self, name, data):
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if 'size' in data:
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volumes[name]['size'] = data['size']
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if 'rename' in data and data['rename'] != name:
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volumes[data['rename']] = volumes[name]
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del volumes[name]
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class MockAttachDB(object):
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def __init__(self, log):
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self._api = MockAPI()
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def api(self):
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return self._api
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def volumeName(self, vid):
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return volumeName(vid)
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def snapshotName(self, vtype, vid):
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return snapshotName(vtype, vid)
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def MockVolumeUpdateDesc(size):
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return {'size': size}
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def MockSPConfig(section = 's01'):
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res = {}
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m = re.match('^s0*([A-Za-z0-9]+)$', section)
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if m:
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res['SP_OURID'] = m.group(1)
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return res
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fakeStorPool.spapi.ApiError = MockApiError
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fakeStorPool.spconfig.SPConfig = MockSPConfig
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fakeStorPool.spopenstack.AttachDB = MockAttachDB
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fakeStorPool.sptypes.VolumeUpdateDesc = MockVolumeUpdateDesc
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@ddt.ddt
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class StorPoolTestCase(test.TestCase):
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def setUp(self):
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super(StorPoolTestCase, self).setUp()
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self.cfg = mock.Mock(spec=conf.Configuration)
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self.cfg.volume_backend_name = 'storpool_test'
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self.cfg.storpool_template = None
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self.cfg.storpool_replication = 3
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mock_exec = mock.Mock()
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mock_exec.return_value = ('', '')
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self.driver = driver.StorPoolDriver(execute=mock_exec,
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configuration=self.cfg)
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self.driver.check_for_setup_error()
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@ddt.data(
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(5, TypeError),
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({'no-host': None}, KeyError),
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({'host': 'sbad'}, exception.StorPoolConfigurationInvalid),
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({'host': 's01'}, None),
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({'host': 'none'}, None),
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)
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@ddt.unpack
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def test_validate_connector(self, conn, exc):
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if exc is None:
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self.assertTrue(self.driver.validate_connector(conn))
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else:
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self.assertRaises(exc,
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self.driver.validate_connector,
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conn)
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@ddt.data(
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(5, TypeError),
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({'no-host': None}, KeyError),
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({'host': 'sbad'}, exception.StorPoolConfigurationInvalid),
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)
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@ddt.unpack
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def test_initialize_connection_bad(self, conn, exc):
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self.assertRaises(exc,
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self.driver.initialize_connection,
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None, conn)
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@ddt.data(
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(1, '42', 's01'),
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(2, '616', 's02'),
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(65, '1610', 'none'),
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)
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@ddt.unpack
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def test_initialize_connection_good(self, cid, hid, name):
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c = self.driver.initialize_connection({'id': hid}, {'host': name})
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self.assertEqual('storpool', c['driver_volume_type'])
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self.assertDictEqual({'client_id': cid, 'volume': hid}, c['data'])
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def test_noop_functions(self):
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self.driver.terminate_connection(None, None)
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self.driver.create_export(None, None, {})
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self.driver.remove_export(None, None)
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def test_stats(self):
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stats = self.driver.get_volume_stats(refresh=True)
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self.assertEqual('StorPool', stats['vendor_name'])
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self.assertEqual('storpool', stats['storage_protocol'])
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self.assertListEqual(['default', 'template_hdd', 'template_ssd'],
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sorted([p['pool_name'] for p in stats['pools']]))
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r = re.compile('^template_([A-Za-z0-9_]+)$')
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for pool in stats['pools']:
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self.assertEqual(21, pool['total_capacity_gb'])
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self.assertEqual(5, int(pool['free_capacity_gb']))
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if pool['pool_name'] != 'default':
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m = r.match(pool['pool_name'])
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self.assertIsNotNone(m)
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self.assertIsNotNone(m.group(1))
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self.assertEqual(m.group(1), pool['storpool_template'])
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def assertVolumeNames(self, names):
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self.assertListEqual(sorted([volumeName(n) for n in names]),
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sorted(volumes.keys()))
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@mock_volume_types
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def test_create_delete_volume(self):
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self.assertVolumeNames([])
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self.assertDictEqual({}, volumes)
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self.assertDictEqual({}, snapshots)
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self.driver.create_volume({'id': '1', 'name': 'v1', 'size': 1,
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'volume_type': None})
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self.assertListEqual([volumeName('1')], list(volumes.keys()))
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self.assertVolumeNames(('1',))
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v = volumes[volumeName('1')]
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self.assertEqual(1 * units.Gi, v['size'])
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self.assertNotIn('template', v.keys())
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self.assertEqual(3, v['replication'])
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caught = False
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try:
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self.driver.create_volume({'id': '1', 'name': 'v1', 'size': 0,
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'volume_type': None})
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except exception.VolumeBackendAPIException:
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caught = True
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self.assertTrue(caught)
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self.driver.delete_volume({'id': '1'})
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self.assertVolumeNames([])
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self.assertDictEqual({}, volumes)
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self.driver.create_volume({'id': '1', 'name': 'v1', 'size': 2,
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'volume_type': None})
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self.assertVolumeNames(('1',))
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v = volumes[volumeName('1')]
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self.assertEqual(2 * units.Gi, v['size'])
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self.assertNotIn('template', v.keys())
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self.assertEqual(3, v['replication'])
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self.driver.create_volume({'id': '2', 'name': 'v2', 'size': 3,
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'volume_type': {'id': 1}})
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self.assertVolumeNames(('1', '2'))
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v = volumes[volumeName('2')]
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self.assertEqual(3 * units.Gi, v['size'])
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self.assertNotIn('template', v.keys())
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self.assertEqual(3, v['replication'])
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self.driver.create_volume({'id': '3', 'name': 'v2', 'size': 4,
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'volume_type': {'id': 2}})
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self.assertVolumeNames(('1', '2', '3'))
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v = volumes[volumeName('3')]
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self.assertEqual(4 * units.Gi, v['size'])
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self.assertEqual('ssd', v['template'])
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self.assertNotIn('replication', v.keys())
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self.driver.create_volume({'id': '4', 'name': 'v2', 'size': 5,
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'volume_type': {'id': 3}})
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self.assertVolumeNames(('1', '2', '3', '4'))
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v = volumes[volumeName('4')]
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self.assertEqual(5 * units.Gi, v['size'])
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self.assertEqual('hdd', v['template'])
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self.assertNotIn('replication', v.keys())
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# Make sure the dictionary is not corrupted somehow...
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v = volumes[volumeName('1')]
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self.assertEqual(2 * units.Gi, v['size'])
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self.assertNotIn('template', v.keys())
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self.assertEqual(3, v['replication'])
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for vid in ('1', '2', '3', '4'):
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self.driver.delete_volume({'id': vid})
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self.assertVolumeNames([])
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self.assertDictEqual({}, volumes)
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self.assertDictEqual({}, snapshots)
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@mock_volume_types
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def test_update_migrated_volume(self):
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self.assertVolumeNames([])
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self.assertDictEqual({}, volumes)
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self.assertDictEqual({}, snapshots)
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# Create two volumes
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self.driver.create_volume({'id': '1', 'name': 'v1', 'size': 1,
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'volume_type': None})
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self.driver.create_volume({'id': '2', 'name': 'v2', 'size': 1,
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'volume_type': None})
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self.assertListEqual([volumeName('1'), volumeName('2')],
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list(volumes.keys()))
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self.assertVolumeNames(('1', '2',))
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# Failure: the "migrated" volume does not even exist
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res = self.driver.update_migrated_volume(None, {'id': '1'},
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{'id': '3', '_name_id': '1'},
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'available')
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self.assertDictEqual({'_name_id': '1'}, res)
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# Failure: a volume with the original volume's name already exists
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res = self.driver.update_migrated_volume(None, {'id': '1'},
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{'id': '2', '_name_id': '1'},
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'available')
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self.assertDictEqual({'_name_id': '1'}, res)
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# Success: rename the migrated volume to match the original
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res = self.driver.update_migrated_volume(None, {'id': '3'},
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{'id': '2', '_name_id': '3'},
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'available')
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self.assertDictEqual({'_name_id': None}, res)
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self.assertListEqual([volumeName('1'), volumeName('3')],
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list(volumes.keys()))
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self.assertVolumeNames(('1', '3',))
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for vid in ('1', '3'):
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self.driver.delete_volume({'id': vid})
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self.assertVolumeNames([])
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self.assertDictEqual({}, volumes)
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self.assertDictEqual({}, snapshots)
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def test_clone_extend_volume(self):
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self.assertVolumeNames([])
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self.assertDictEqual({}, volumes)
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self.assertDictEqual({}, snapshots)
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self.driver.create_volume({'id': '1', 'name': 'v1', 'size': 1,
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'volume_type': None})
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self.assertVolumeNames(('1',))
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self.driver.extend_volume({'id': '1'}, 2)
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self.assertEqual(2 * units.Gi, volumes[volumeName('1')]['size'])
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self.driver.create_cloned_volume({'id': '2', 'name': 'clo', 'size': 3},
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{'id': 1})
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self.assertVolumeNames(('1', '2'))
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self.assertDictEqual({}, snapshots)
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# Note: this would not be true in a real environment (the snapshot will
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# have been deleted, the volume would have no parent), but with this
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# fake implementation it helps us make sure that the second volume was
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# created with the proper options.
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self.assertEqual(volumes[volumeName('2')]['parent'],
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snapshotName('clone', '2'))
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self.driver.delete_volume({'id': 1})
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self.driver.delete_volume({'id': 2})
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self.assertDictEqual({}, volumes)
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self.assertDictEqual({}, snapshots)
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@mock_volume_types
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def test_config_replication(self):
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self.assertVolumeNames([])
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self.assertDictEqual({}, volumes)
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self.assertDictEqual({}, snapshots)
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save_repl = self.driver.configuration.storpool_replication
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self.driver.configuration.storpool_replication = 3
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stats = self.driver.get_volume_stats(refresh=True)
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pool = stats['pools'][0]
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self.assertEqual(21, pool['total_capacity_gb'])
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self.assertEqual(5, int(pool['free_capacity_gb']))
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self.driver.create_volume({'id': 'cfgrepl1', 'name': 'v1', 'size': 1,
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'volume_type': None})
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self.assertVolumeNames(('cfgrepl1',))
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v = volumes[volumeName('cfgrepl1')]
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self.assertEqual(3, v['replication'])
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self.assertNotIn('template', v)
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self.driver.delete_volume({'id': 'cfgrepl1'})
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self.driver.configuration.storpool_replication = 2
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stats = self.driver.get_volume_stats(refresh=True)
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pool = stats['pools'][0]
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self.assertEqual(21, pool['total_capacity_gb'])
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self.assertEqual(8, int(pool['free_capacity_gb']))
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self.driver.create_volume({'id': 'cfgrepl2', 'name': 'v1', 'size': 1,
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'volume_type': None})
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self.assertVolumeNames(('cfgrepl2',))
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v = volumes[volumeName('cfgrepl2')]
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self.assertEqual(2, v['replication'])
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self.assertNotIn('template', v)
|
||||
self.driver.delete_volume({'id': 'cfgrepl2'})
|
||||
|
||||
self.driver.create_volume({'id': 'cfgrepl3', 'name': 'v1', 'size': 1,
|
||||
'volume_type': {'id': 2}})
|
||||
self.assertVolumeNames(('cfgrepl3',))
|
||||
v = volumes[volumeName('cfgrepl3')]
|
||||
self.assertNotIn('replication', v)
|
||||
self.assertEqual('ssd', v['template'])
|
||||
self.driver.delete_volume({'id': 'cfgrepl3'})
|
||||
|
||||
self.driver.configuration.storpool_replication = save_repl
|
||||
|
||||
self.assertVolumeNames([])
|
||||
self.assertDictEqual({}, volumes)
|
||||
self.assertDictEqual({}, snapshots)
|
||||
|
||||
@mock_volume_types
|
||||
def test_config_template(self):
|
||||
self.assertVolumeNames([])
|
||||
self.assertDictEqual({}, volumes)
|
||||
self.assertDictEqual({}, snapshots)
|
||||
|
||||
save_template = self.driver.configuration.storpool_template
|
||||
|
||||
self.driver.configuration.storpool_template = None
|
||||
|
||||
self.driver.create_volume({'id': 'cfgtempl1', 'name': 'v1', 'size': 1,
|
||||
'volume_type': None})
|
||||
self.assertVolumeNames(('cfgtempl1',))
|
||||
v = volumes[volumeName('cfgtempl1')]
|
||||
self.assertEqual(3, v['replication'])
|
||||
self.assertNotIn('template', v)
|
||||
self.driver.delete_volume({'id': 'cfgtempl1'})
|
||||
|
||||
self.driver.create_volume({'id': 'cfgtempl2', 'name': 'v1', 'size': 1,
|
||||
'volume_type': {'id': 2}})
|
||||
self.assertVolumeNames(('cfgtempl2',))
|
||||
v = volumes[volumeName('cfgtempl2')]
|
||||
self.assertNotIn('replication', v)
|
||||
self.assertEqual('ssd', v['template'])
|
||||
self.driver.delete_volume({'id': 'cfgtempl2'})
|
||||
|
||||
self.driver.configuration.storpool_template = 'hdd'
|
||||
|
||||
self.driver.create_volume({'id': 'cfgtempl3', 'name': 'v1', 'size': 1,
|
||||
'volume_type': None})
|
||||
self.assertVolumeNames(('cfgtempl3',))
|
||||
v = volumes[volumeName('cfgtempl3')]
|
||||
self.assertNotIn('replication', v)
|
||||
self.assertEqual('hdd', v['template'])
|
||||
self.driver.delete_volume({'id': 'cfgtempl3'})
|
||||
|
||||
self.driver.create_volume({'id': 'cfgtempl4', 'name': 'v1', 'size': 1,
|
||||
'volume_type': {'id': 2}})
|
||||
self.assertVolumeNames(('cfgtempl4',))
|
||||
v = volumes[volumeName('cfgtempl4')]
|
||||
self.assertNotIn('replication', v)
|
||||
self.assertEqual('ssd', v['template'])
|
||||
self.driver.delete_volume({'id': 'cfgtempl4'})
|
||||
|
||||
self.driver.configuration.storpool_template = save_template
|
||||
|
||||
self.assertVolumeNames([])
|
||||
self.assertDictEqual({}, volumes)
|
||||
self.assertDictEqual({}, snapshots)
|
||||
|
||||
@ddt.data(
|
||||
# No volume type at all: 'default'
|
||||
('default', None),
|
||||
# No storpool_template in the type extra specs: 'default'
|
||||
('default', {'id': 1}),
|
||||
# An actual template specified: 'template_*'
|
||||
('template_ssd', {'id': 2}),
|
||||
('template_hdd', {'id': 3}),
|
||||
)
|
||||
@ddt.unpack
|
||||
@mock_volume_types
|
||||
def test_get_pool(self, pool, volume_type):
|
||||
self.assertEqual(pool,
|
||||
self.driver.get_pool({
|
||||
'volume_type': volume_type
|
||||
}))
|
||||
|
|
@ -0,0 +1,504 @@
|
|||
# Copyright (c) 2014 - 2017 StorPool
|
||||
# All Rights Reserved.
|
||||
#
|
||||
# Licensed under the Apache License, Version 2.0 (the "License"); you may
|
||||
# not use this file except in compliance with the License. You may obtain
|
||||
# a copy of the License at
|
||||
#
|
||||
# http://www.apache.org/licenses/LICENSE-2.0
|
||||
#
|
||||
# Unless required by applicable law or agreed to in writing, software
|
||||
# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
|
||||
# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
|
||||
# License for the specific language governing permissions and limitations
|
||||
# under the License.
|
||||
|
||||
"""StorPool block device driver"""
|
||||
|
||||
from __future__ import absolute_import
|
||||
|
||||
import platform
|
||||
|
||||
from oslo_config import cfg
|
||||
from oslo_log import log as logging
|
||||
from oslo_utils import importutils
|
||||
from oslo_utils import units
|
||||
import six
|
||||
|
||||
from cinder import exception
|
||||
from cinder.i18n import _
|
||||
from cinder import interface
|
||||
from cinder.volume import driver
|
||||
from cinder.volume import volume_types
|
||||
|
||||
LOG = logging.getLogger(__name__)
|
||||
|
||||
storpool = importutils.try_import('storpool')
|
||||
if storpool:
|
||||
from storpool import spapi
|
||||
from storpool import spconfig
|
||||
from storpool import spopenstack
|
||||
from storpool import sptypes
|
||||
|
||||
|
||||
storpool_opts = [
|
||||
cfg.StrOpt('storpool_template',
|
||||
default=None,
|
||||
help='The StorPool template for volumes with no type.'),
|
||||
cfg.IntOpt('storpool_replication',
|
||||
default=3,
|
||||
help='The default StorPool chain replication value. '
|
||||
'Used when creating a volume with no specified type if '
|
||||
'storpool_template is not set. Also used for calculating '
|
||||
'the apparent free space reported in the stats.'),
|
||||
]
|
||||
|
||||
CONF = cfg.CONF
|
||||
CONF.register_opts(storpool_opts)
|
||||
|
||||
|
||||
@interface.volumedriver
|
||||
class StorPoolDriver(driver.VolumeDriver):
|
||||
"""The StorPool block device driver.
|
||||
|
||||
Version history:
|
||||
|
||||
.. code-block:: none
|
||||
|
||||
0.1.0 - Initial driver
|
||||
0.2.0 - Bring the driver up to date with Kilo and Liberty:
|
||||
- implement volume retyping and migrations
|
||||
- use the driver.*VD ABC metaclasses
|
||||
- bugfix: fall back to the configured StorPool template
|
||||
1.0.0 - Imported into OpenStack Liberty with minor fixes
|
||||
1.1.0 - Bring the driver up to date with Liberty and Mitaka:
|
||||
- drop the CloneableVD and RetypeVD base classes
|
||||
- enable faster volume copying by specifying
|
||||
sparse_volume_copy=true in the stats report
|
||||
1.1.1 - Fix the internal _storpool_client_id() method to
|
||||
not break on an unknown host name or UUID; thus,
|
||||
remove the StorPoolConfigurationMissing exception.
|
||||
1.1.2 - Bring the driver up to date with Pike: do not
|
||||
translate the error messages
|
||||
1.2.0 - Inherit from VolumeDriver, implement get_pool()
|
||||
1.2.1 - Implement interface.volumedriver, add CI_WIKI_NAME,
|
||||
fix the docstring formatting
|
||||
1.2.2 - Reintroduce the driver into OpenStack Queens,
|
||||
add ignore_errors to the internal _detach_volume() method
|
||||
|
||||
"""
|
||||
|
||||
VERSION = '1.2.1'
|
||||
CI_WIKI_NAME = 'StorPool_CI'
|
||||
|
||||
def __init__(self, *args, **kwargs):
|
||||
super(StorPoolDriver, self).__init__(*args, **kwargs)
|
||||
self.configuration.append_config_values(storpool_opts)
|
||||
self._sp_config = None
|
||||
self._ourId = None
|
||||
self._ourIdInt = None
|
||||
self._attach = None
|
||||
|
||||
def _backendException(self, e):
|
||||
return exception.VolumeBackendAPIException(data=six.text_type(e))
|
||||
|
||||
def _template_from_volume(self, volume):
|
||||
default = self.configuration.storpool_template
|
||||
vtype = volume['volume_type']
|
||||
if vtype is not None:
|
||||
specs = volume_types.get_volume_type_extra_specs(vtype['id'])
|
||||
if specs is not None:
|
||||
return specs.get('storpool_template', default)
|
||||
return default
|
||||
|
||||
def get_pool(self, volume):
|
||||
template = self._template_from_volume(volume)
|
||||
if template is None:
|
||||
return 'default'
|
||||
else:
|
||||
return 'template_' + template
|
||||
|
||||
def create_volume(self, volume):
|
||||
size = int(volume['size']) * units.Gi
|
||||
name = self._attach.volumeName(volume['id'])
|
||||
template = self._template_from_volume(volume)
|
||||
try:
|
||||
if template is None:
|
||||
self._attach.api().volumeCreate({
|
||||
'name': name,
|
||||
'size': size,
|
||||
'replication': self.configuration.storpool_replication
|
||||
})
|
||||
else:
|
||||
self._attach.api().volumeCreate({
|
||||
'name': name,
|
||||
'size': size,
|
||||
'template': template
|
||||
})
|
||||
except spapi.ApiError as e:
|
||||
raise self._backendException(e)
|
||||
|
||||
def _storpool_client_id(self, connector):
|
||||
hostname = connector['host']
|
||||
if hostname == self.host or hostname == CONF.host:
|
||||
hostname = platform.node()
|
||||
try:
|
||||
cfg = spconfig.SPConfig(section=hostname)
|
||||
return int(cfg['SP_OURID'])
|
||||
except KeyError:
|
||||
return 65
|
||||
except Exception as e:
|
||||
raise exception.StorPoolConfigurationInvalid(
|
||||
section=hostname, param='SP_OURID', error=e)
|
||||
|
||||
def validate_connector(self, connector):
|
||||
return self._storpool_client_id(connector) >= 0
|
||||
|
||||
def initialize_connection(self, volume, connector):
|
||||
return {'driver_volume_type': 'storpool',
|
||||
'data': {
|
||||
'client_id': self._storpool_client_id(connector),
|
||||
'volume': volume['id'],
|
||||
}}
|
||||
|
||||
def terminate_connection(self, volume, connector, **kwargs):
|
||||
pass
|
||||
|
||||
def create_snapshot(self, snapshot):
|
||||
volname = self._attach.volumeName(snapshot['volume_id'])
|
||||
name = self._attach.snapshotName('snap', snapshot['id'])
|
||||
try:
|
||||
self._attach.api().snapshotCreate(volname, {'name': name})
|
||||
except spapi.ApiError as e:
|
||||
raise self._backendException(e)
|
||||
|
||||
def create_volume_from_snapshot(self, volume, snapshot):
|
||||
size = int(volume['size']) * units.Gi
|
||||
volname = self._attach.volumeName(volume['id'])
|
||||
name = self._attach.snapshotName('snap', snapshot['id'])
|
||||
try:
|
||||
self._attach.api().volumeCreate({
|
||||
'name': volname,
|
||||
'size': size,
|
||||
'parent': name
|
||||
})
|
||||
except spapi.ApiError as e:
|
||||
raise self._backendException(e)
|
||||
|
||||
def create_cloned_volume(self, volume, src_vref):
|
||||
refname = self._attach.volumeName(src_vref['id'])
|
||||
snapname = self._attach.snapshotName('clone', volume['id'])
|
||||
try:
|
||||
self._attach.api().snapshotCreate(refname, {'name': snapname})
|
||||
except spapi.ApiError as e:
|
||||
raise self._backendException(e)
|
||||
|
||||
size = int(volume['size']) * units.Gi
|
||||
volname = self._attach.volumeName(volume['id'])
|
||||
try:
|
||||
self._attach.api().volumeCreate({
|
||||
'name': volname,
|
||||
'size': size,
|
||||
'parent': snapname
|
||||
})
|
||||
except spapi.ApiError as e:
|
||||
raise self._backendException(e)
|
||||
finally:
|
||||
try:
|
||||
self._attach.api().snapshotDelete(snapname)
|
||||
except spapi.ApiError as e:
|
||||
# ARGH!
|
||||
LOG.error("Could not delete the temp snapshot %(name)s: "
|
||||
"%(msg)s",
|
||||
{'name': snapname, 'msg': e})
|
||||
|
||||
def create_export(self, context, volume, connector):
|
||||
pass
|
||||
|
||||
def remove_export(self, context, volume):
|
||||
pass
|
||||
|
||||
def delete_volume(self, volume):
|
||||
name = self._attach.volumeName(volume['id'])
|
||||
try:
|
||||
self._attach.api().volumesReassign(
|
||||
json=[{"volume": name, "detach": "all"}])
|
||||
self._attach.api().volumeDelete(name)
|
||||
except spapi.ApiError as e:
|
||||
if e.name == 'objectDoesNotExist':
|
||||
pass
|
||||
else:
|
||||
raise self._backendException(e)
|
||||
|
||||
def delete_snapshot(self, snapshot):
|
||||
name = self._attach.snapshotName('snap', snapshot['id'])
|
||||
try:
|
||||
self._attach.api().volumesReassign(
|
||||
json=[{"snapshot": name, "detach": "all"}])
|
||||
self._attach.api().snapshotDelete(name)
|
||||
except spapi.ApiError as e:
|
||||
if e.name == 'objectDoesNotExist':
|
||||
pass
|
||||
else:
|
||||
raise self._backendException(e)
|
||||
|
||||
def check_for_setup_error(self):
|
||||
if storpool is None:
|
||||
msg = _('storpool libraries not found')
|
||||
raise exception.VolumeBackendAPIException(data=msg)
|
||||
|
||||
self._attach = spopenstack.AttachDB(log=LOG)
|
||||
try:
|
||||
self._attach.api()
|
||||
except Exception as e:
|
||||
LOG.error("StorPoolDriver API initialization failed: %s", e)
|
||||
raise
|
||||
|
||||
def get_volume_stats(self, refresh=False):
|
||||
if refresh:
|
||||
self._update_volume_stats()
|
||||
|
||||
return self._stats
|
||||
|
||||
def _update_volume_stats(self):
|
||||
try:
|
||||
dl = self._attach.api().disksList()
|
||||
templates = self._attach.api().volumeTemplatesList()
|
||||
except spapi.ApiError as e:
|
||||
raise self._backendException(e)
|
||||
total = 0
|
||||
used = 0
|
||||
free = 0
|
||||
agSize = 512 * units.Mi
|
||||
for (id, desc) in dl.items():
|
||||
if desc.generationLeft != -1:
|
||||
continue
|
||||
total += desc.agCount * agSize
|
||||
used += desc.agAllocated * agSize
|
||||
free += desc.agFree * agSize * 4096 / (4096 + 128)
|
||||
|
||||
# Report the free space as if all new volumes will be created
|
||||
# with StorPool replication 3; anything else is rare.
|
||||
free /= self.configuration.storpool_replication
|
||||
|
||||
space = {
|
||||
'total_capacity_gb': total / units.Gi,
|
||||
'free_capacity_gb': free / units.Gi,
|
||||
'reserved_percentage': 0,
|
||||
'QoS_support': False,
|
||||
}
|
||||
|
||||
pools = [dict(space, pool_name='default')]
|
||||
|
||||
pools += [dict(space,
|
||||
pool_name='template_' + t.name,
|
||||
storpool_template=t.name
|
||||
) for t in templates]
|
||||
|
||||
self._stats = {
|
||||
'volume_backend_name': self.configuration.safe_get(
|
||||
'volume_backend_name') or 'storpool',
|
||||
'vendor_name': 'StorPool',
|
||||
'driver_version': self.VERSION,
|
||||
'storage_protocol': 'storpool',
|
||||
|
||||
'sparse_copy_volume': True,
|
||||
|
||||
'pools': pools
|
||||
}
|
||||
|
||||
def _attach_volume(self, context, volume, properties, remote=False):
|
||||
if remote:
|
||||
return super(StorPoolDriver, self)._attach_volume(
|
||||
context, volume, properties, remote=remote)
|
||||
req_id = context.request_id
|
||||
req = self._attach.get().get(req_id, None)
|
||||
if req is None:
|
||||
req = {
|
||||
'volume': self._attach.volumeName(volume['id']),
|
||||
'type': 'cinder-attach',
|
||||
'id': context.request_id,
|
||||
'rights': 2,
|
||||
'volsnap': False,
|
||||
'remove_on_detach': True
|
||||
}
|
||||
self._attach.add(req_id, req)
|
||||
name = req['volume']
|
||||
self._attach.sync(req_id, None)
|
||||
return {'device': {'path': '/dev/storpool/' + name,
|
||||
'storpool_attach_req': req_id}}, volume
|
||||
|
||||
def _detach_volume(self, context, attach_info, volume, properties,
|
||||
force=False, remote=False, ignore_errors=False):
|
||||
if remote:
|
||||
return super(StorPoolDriver, self)._detach_volume(
|
||||
context, attach_info, volume, properties,
|
||||
force=force, remote=remote, ignore_errors=ignore_errors)
|
||||
try:
|
||||
req_id = attach_info.get('device', {}).get(
|
||||
'storpool_attach_req', context.request_id)
|
||||
req = self._attach.get()[req_id]
|
||||
name = req['volume']
|
||||
self._attach.sync(req_id, name)
|
||||
if req.get('remove_on_detach', False):
|
||||
self._attach.remove(req_id)
|
||||
except BaseException:
|
||||
if not ignore_errors:
|
||||
raise
|
||||
|
||||
def backup_volume(self, context, backup, backup_service):
|
||||
volume = self.db.volume_get(context, backup['volume_id'])
|
||||
req_id = context.request_id
|
||||
volname = self._attach.volumeName(volume['id'])
|
||||
name = self._attach.volsnapName(volume['id'], req_id)
|
||||
try:
|
||||
self._attach.api().snapshotCreate(volname, {'name': name})
|
||||
except spapi.ApiError as e:
|
||||
raise self._backendException(e)
|
||||
self._attach.add(req_id, {
|
||||
'volume': name,
|
||||
'type': 'backup',
|
||||
'id': req_id,
|
||||
'rights': 1,
|
||||
'volsnap': True
|
||||
})
|
||||
try:
|
||||
return super(StorPoolDriver, self).backup_volume(
|
||||
context, backup, backup_service)
|
||||
finally:
|
||||
self._attach.remove(req_id)
|
||||
try:
|
||||
self._attach.api().snapshotDelete(name)
|
||||
except spapi.ApiError as e:
|
||||
LOG.error(
|
||||
'Could not remove the temp snapshot %(name)s for '
|
||||
'%(vol)s: %(err)s',
|
||||
{'name': name, 'vol': volname, 'err': e})
|
||||
|
||||
def copy_volume_to_image(self, context, volume, image_service, image_meta):
|
||||
req_id = context.request_id
|
||||
volname = self._attach.volumeName(volume['id'])
|
||||
name = self._attach.volsnapName(volume['id'], req_id)
|
||||
try:
|
||||
self._attach.api().snapshotCreate(volname, {'name': name})
|
||||
except spapi.ApiError as e:
|
||||
raise self._backendException(e)
|
||||
self._attach.add(req_id, {
|
||||
'volume': name,
|
||||
'type': 'copy-from',
|
||||
'id': req_id,
|
||||
'rights': 1,
|
||||
'volsnap': True
|
||||
})
|
||||
try:
|
||||
return super(StorPoolDriver, self).copy_volume_to_image(
|
||||
context, volume, image_service, image_meta)
|
||||
finally:
|
||||
self._attach.remove(req_id)
|
||||
try:
|
||||
self._attach.api().snapshotDelete(name)
|
||||
except spapi.ApiError as e:
|
||||
LOG.error(
|
||||
'Could not remove the temp snapshot %(name)s for '
|
||||
'%(vol)s: %(err)s',
|
||||
{'name': name, 'vol': volname, 'err': e})
|
||||
|
||||
def copy_image_to_volume(self, context, volume, image_service, image_id):
|
||||
req_id = context.request_id
|
||||
name = self._attach.volumeName(volume['id'])
|
||||
self._attach.add(req_id, {
|
||||
'volume': name,
|
||||
'type': 'copy-to',
|
||||
'id': req_id,
|
||||
'rights': 2
|
||||
})
|
||||
try:
|
||||
return super(StorPoolDriver, self).copy_image_to_volume(
|
||||
context, volume, image_service, image_id)
|
||||
finally:
|
||||
self._attach.remove(req_id)
|
||||
|
||||
def extend_volume(self, volume, new_size):
|
||||
size = int(new_size) * units.Gi
|
||||
name = self._attach.volumeName(volume['id'])
|
||||
try:
|
||||
upd = sptypes.VolumeUpdateDesc(size=size)
|
||||
self._attach.api().volumeUpdate(name, upd)
|
||||
except spapi.ApiError as e:
|
||||
raise self._backendException(e)
|
||||
|
||||
def ensure_export(self, context, volume):
|
||||
# Already handled by Nova's AttachDB, we hope.
|
||||
# Maybe it should move here, but oh well.
|
||||
pass
|
||||
|
||||
def retype(self, context, volume, new_type, diff, host):
|
||||
update = {}
|
||||
|
||||
if diff['encryption']:
|
||||
LOG.error('Retype of encryption type not supported.')
|
||||
return False
|
||||
|
||||
templ = self.configuration.storpool_template
|
||||
repl = self.configuration.storpool_replication
|
||||
if diff['extra_specs']:
|
||||
for (k, v) in diff['extra_specs'].items():
|
||||
if k == 'volume_backend_name':
|
||||
if v[0] != v[1]:
|
||||
# Retype of a volume backend not supported yet,
|
||||
# the volume needs to be migrated.
|
||||
return False
|
||||
elif k == 'storpool_template':
|
||||
if v[0] != v[1]:
|
||||
if v[1] is not None:
|
||||
update['template'] = v[1]
|
||||
elif templ is not None:
|
||||
update['template'] = templ
|
||||
else:
|
||||
update['replication'] = repl
|
||||
elif v[0] != v[1]:
|
||||
LOG.error('Retype of extra_specs "%s" not '
|
||||
'supported yet.', k)
|
||||
return False
|
||||
|
||||
if update:
|
||||
name = self._attach.volumeName(volume['id'])
|
||||
try:
|
||||
upd = sptypes.VolumeUpdateDesc(**update)
|
||||
self._attach.api().volumeUpdate(name, upd)
|
||||
except spapi.ApiError as e:
|
||||
raise self._backendException(e)
|
||||
|
||||
return True
|
||||
|
||||
def update_migrated_volume(self, context, volume, new_volume,
|
||||
original_volume_status):
|
||||
orig_id = volume['id']
|
||||
orig_name = self._attach.volumeName(orig_id)
|
||||
temp_id = new_volume['id']
|
||||
temp_name = self._attach.volumeName(temp_id)
|
||||
vols = {v.name: True for v in self._attach.api().volumesList()}
|
||||
if temp_name not in vols:
|
||||
LOG.error('StorPool update_migrated_volume(): it seems '
|
||||
'that the StorPool volume "%(tid)s" was not '
|
||||
'created as part of the migration from '
|
||||
'"%(oid)s".', {'tid': temp_id, 'oid': orig_id})
|
||||
return {'_name_id': new_volume['_name_id'] or new_volume['id']}
|
||||
elif orig_name in vols:
|
||||
LOG.error('StorPool update_migrated_volume(): both '
|
||||
'the original volume "%(oid)s" and the migrated '
|
||||
'StorPool volume "%(tid)s" seem to exist on '
|
||||
'the StorPool cluster.',
|
||||
{'oid': orig_id, 'tid': temp_id})
|
||||
return {'_name_id': new_volume['_name_id'] or new_volume['id']}
|
||||
else:
|
||||
try:
|
||||
self._attach.api().volumeUpdate(temp_name,
|
||||
{'rename': orig_name})
|
||||
return {'_name_id': None}
|
||||
except spapi.ApiError as e:
|
||||
LOG.error('StorPool update_migrated_volume(): '
|
||||
'could not rename %(tname)s to %(oname)s: '
|
||||
'%(err)s',
|
||||
{'tname': temp_name, 'oname': orig_name, 'err': e})
|
||||
return {'_name_id': new_volume['_name_id'] or new_volume['id']}
|
||||
|
|
@ -0,0 +1,71 @@
|
|||
======================
|
||||
StorPool volume driver
|
||||
======================
|
||||
|
||||
StorPool is distributed data storage software running on standard x86
|
||||
servers. StorPool aggregates the performance and capacity of all drives
|
||||
into a shared pool of storage distributed among the servers. Within
|
||||
this storage pool the user creates thin-provisioned volumes that are
|
||||
exposed to the clients as block devices. StorPool consists of two parts
|
||||
wrapped in one package - a server and a client. The StorPool server
|
||||
allows a hypervisor to act as a storage node, while the StorPool client
|
||||
allows a hypervisor node to access the storage pool and act as a compute
|
||||
node. In OpenStack terms the StorPool solution allows each hypervisor
|
||||
node to be both a storage and a compute node simultaneously.
|
||||
|
||||
Prerequisites
|
||||
-------------
|
||||
|
||||
* The controller and all the compute nodes must have access to the StorPool
|
||||
API service.
|
||||
|
||||
* All nodes where StorPool-backed volumes will be attached must have access to
|
||||
the StorPool data network and run the ``storpool_block`` service.
|
||||
|
||||
* If StorPool-backed Cinder volumes need to be created directly from Glance
|
||||
images, then the node running the ``cinder-volume`` service must also have
|
||||
access to the StorPool data network and run the ``storpool_block`` service.
|
||||
|
||||
* All nodes that need to access the StorPool API (the compute nodes and
|
||||
the node running the ``cinder-volume`` service) must have the following
|
||||
packages installed:
|
||||
|
||||
* storpool-config (part of the StorPool installation)
|
||||
* the storpool Python bindings package
|
||||
* the storpool.spopenstack Python helper package
|
||||
|
||||
Configuring the StorPool volume driver
|
||||
--------------------------------------
|
||||
|
||||
A valid ``/etc/storpool.conf`` file is required; please contact the StorPool
|
||||
support team for assistance.
|
||||
|
||||
The StorPool Cinder volume driver has two configuration options that may
|
||||
be specified both in the global configuration (e.g. in a ``cinder.conf``
|
||||
volume backend definition) and per volume type:
|
||||
|
||||
- ``storpool_template``: specifies the StorPool template (replication,
|
||||
placement, etc. specifications defined once and used for multiple
|
||||
volumes and snapshots) to use for the Cinder volume type or, if
|
||||
specified globally, as a default value for Cinder volumes. There is
|
||||
no default value for this option, see ``storpool_replication``.
|
||||
|
||||
- ``storpool_replication``: if ``storpool_template`` is not set,
|
||||
the volume will be created with the specified chain replication and
|
||||
with the default placement constraints for the StorPool cluster.
|
||||
The default value for the chain replication is 3.
|
||||
|
||||
Using the StorPool volume driver
|
||||
--------------------------------
|
||||
|
||||
The most common use for the Cinder StorPool volume driver is probably
|
||||
attaching volumes to Nova instances. For this to work, the ``nova-compute``
|
||||
service and the ``os-brick`` library must recognize the "storpool" volume
|
||||
attachment driver; please contact the StorPool support team for more
|
||||
information.
|
||||
|
||||
Currently there is no StorPool driver for Nova ephemeral volumes; to run
|
||||
Nova instances with a StorPool-backed volume as a root device, create
|
||||
a Cinder volume with the root filesystem image, make a snapshot, and let
|
||||
Nova create the instance with a root device as a new volume created from
|
||||
that snapshot.
|
||||
|
|
@ -62,6 +62,7 @@ Driver Configuration Reference
|
|||
drivers/pure-storage-driver
|
||||
drivers/quobyte-driver
|
||||
drivers/solidfire-volume-driver
|
||||
drivers/storpool-volume-driver
|
||||
drivers/synology-dsm-driver
|
||||
drivers/tintri-volume-driver
|
||||
drivers/vzstorage-driver
|
||||
|
|
|
|||
|
|
@ -0,0 +1,3 @@
|
|||
---
|
||||
features:
|
||||
- The StorPool backend driver was added.
|
||||
Loading…
Reference in New Issue