49093ae469
Added support for over subscription over thin provisioning. The backend and every pool are supporting both thin and thick provisioning. DocImpact Implements: blueprint scaleio-thin-provisioning- Change-Id: I0181808d3287b8efe7805ea6cc48c8abd2575499
1419 lines
61 KiB
Python
1419 lines
61 KiB
Python
# Copyright (c) 2013 - 2015 EMC Corporation.
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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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Driver for EMC ScaleIO based on ScaleIO remote CLI.
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"""
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import base64
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import binascii
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import json
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import math
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from os_brick.initiator import connector
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from oslo_config import cfg
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from oslo_log import log as logging
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from oslo_utils import units
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import requests
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import six
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from six.moves import urllib
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from cinder import context
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from cinder import exception
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from cinder.i18n import _, _LI, _LW, _LE
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from cinder.image import image_utils
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from cinder import interface
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from cinder import utils
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from cinder.volume import driver
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from cinder.volume.drivers.san import san
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from cinder.volume import qos_specs
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from cinder.volume import volume_types
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CONF = cfg.CONF
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LOG = logging.getLogger(__name__)
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scaleio_opts = [
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cfg.StrOpt('sio_rest_server_port',
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default='443',
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help='REST server port.'),
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cfg.BoolOpt('sio_verify_server_certificate',
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default=False,
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help='Verify server certificate.'),
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cfg.StrOpt('sio_server_certificate_path',
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help='Server certificate path.'),
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cfg.BoolOpt('sio_round_volume_capacity',
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default=True,
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help='Round up volume capacity.'),
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cfg.BoolOpt('sio_unmap_volume_before_deletion',
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default=False,
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help='Unmap volume before deletion.'),
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cfg.StrOpt('sio_protection_domain_id',
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help='Protection Domain ID.'),
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cfg.StrOpt('sio_protection_domain_name',
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help='Protection Domain name.'),
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cfg.StrOpt('sio_storage_pools',
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help='Storage Pools.'),
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cfg.StrOpt('sio_storage_pool_name',
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help='Storage Pool name.'),
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cfg.StrOpt('sio_storage_pool_id',
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help='Storage Pool ID.'),
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cfg.FloatOpt('sio_max_over_subscription_ratio',
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# This option exists to provide a default value for the
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# ScaleIO driver which is different than the global default.
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help='max_over_subscription_ratio setting for the ScaleIO '
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'driver. If set, this takes precedence over the '
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'general max_over_subscription_ratio option. If '
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'None, the general option is used.'
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'Maximum value allowed for ScaleIO is 10.0.')
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]
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CONF.register_opts(scaleio_opts)
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STORAGE_POOL_NAME = 'sio:sp_name'
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STORAGE_POOL_ID = 'sio:sp_id'
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PROTECTION_DOMAIN_NAME = 'sio:pd_name'
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PROTECTION_DOMAIN_ID = 'sio:pd_id'
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PROVISIONING_KEY = 'provisioning:type'
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OLD_PROVISIONING_KEY = 'sio:provisioning_type'
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IOPS_LIMIT_KEY = 'sio:iops_limit'
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BANDWIDTH_LIMIT = 'sio:bandwidth_limit'
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QOS_IOPS_LIMIT_KEY = 'maxIOPS'
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QOS_BANDWIDTH_LIMIT = 'maxBWS'
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QOS_IOPS_PER_GB = 'maxIOPSperGB'
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QOS_BANDWIDTH_PER_GB = 'maxBWSperGB'
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BLOCK_SIZE = 8
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OK_STATUS_CODE = 200
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VOLUME_NOT_FOUND_ERROR = 79
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# This code belongs to older versions of ScaleIO
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OLD_VOLUME_NOT_FOUND_ERROR = 78
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VOLUME_NOT_MAPPED_ERROR = 84
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VOLUME_ALREADY_MAPPED_ERROR = 81
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MIN_BWS_SCALING_SIZE = 128
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SIO_MAX_OVERSUBSCRIPTION_RATIO = 10.0
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@interface.volumedriver
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class ScaleIODriver(driver.VolumeDriver):
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"""EMC ScaleIO Driver."""
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VERSION = "2.0"
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# ThirdPartySystems wiki
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CI_WIKI_NAME = "EMC_ScaleIO_CI"
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scaleio_qos_keys = (QOS_IOPS_LIMIT_KEY, QOS_BANDWIDTH_LIMIT,
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QOS_IOPS_PER_GB, QOS_BANDWIDTH_PER_GB)
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def __init__(self, *args, **kwargs):
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super(ScaleIODriver, self).__init__(*args, **kwargs)
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self.configuration.append_config_values(san.san_opts)
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self.configuration.append_config_values(scaleio_opts)
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self.server_ip = self.configuration.san_ip
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self.server_port = self.configuration.sio_rest_server_port
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self.server_username = self.configuration.san_login
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self.server_password = self.configuration.san_password
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self.server_token = None
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self.verify_server_certificate = (
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self.configuration.sio_verify_server_certificate)
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self.server_certificate_path = None
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if self.verify_server_certificate:
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self.server_certificate_path = (
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self.configuration.sio_server_certificate_path)
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LOG.info(_LI(
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"REST server IP: %(ip)s, port: %(port)s, username: %("
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"user)s. "
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"Verify server's certificate: %(verify_cert)s."),
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{'ip': self.server_ip,
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'port': self.server_port,
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'user': self.server_username,
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'verify_cert': self.verify_server_certificate})
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self.storage_pools = None
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if self.configuration.sio_storage_pools:
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self.storage_pools = [
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e.strip() for e in
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self.configuration.sio_storage_pools.split(',')]
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self.storage_pool_name = self.configuration.sio_storage_pool_name
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self.storage_pool_id = self.configuration.sio_storage_pool_id
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if self.storage_pool_name is None and self.storage_pool_id is None:
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LOG.warning(_LW("No storage pool name or id was found."))
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else:
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LOG.info(_LI(
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"Storage pools names: %(pools)s, "
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"storage pool name: %(pool)s, pool id: %(pool_id)s."),
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{'pools': self.storage_pools,
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'pool': self.storage_pool_name,
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'pool_id': self.storage_pool_id})
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self.protection_domain_name = (
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self.configuration.sio_protection_domain_name)
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LOG.info(_LI(
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"Protection domain name: %(domain_name)s."),
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{'domain_name': self.protection_domain_name})
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self.protection_domain_id = self.configuration.sio_protection_domain_id
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LOG.info(_LI(
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"Protection domain id: %(domain_id)s."),
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{'domain_id': self.protection_domain_id})
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self.provisioning_type = (
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'thin' if self.configuration.san_thin_provision else 'thick')
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LOG.info(_LI(
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"Default provisioning type: %(provisioning_type)s."),
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{'provisioning_type': self.provisioning_type})
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if self.configuration.sio_max_over_subscription_ratio is not None:
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self.configuration.max_over_subscription_ratio = (
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self.configuration.sio_max_over_subscription_ratio)
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self.connector = connector.InitiatorConnector.factory(
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connector.SCALEIO, utils.get_root_helper(),
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device_scan_attempts=
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self.configuration.num_volume_device_scan_tries
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)
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self.connection_properties = {}
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self.connection_properties['scaleIO_volname'] = None
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self.connection_properties['hostIP'] = None
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self.connection_properties['serverIP'] = self.server_ip
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self.connection_properties['serverPort'] = self.server_port
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self.connection_properties['serverUsername'] = self.server_username
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self.connection_properties['serverPassword'] = self.server_password
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self.connection_properties['serverToken'] = self.server_token
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self.connection_properties['iopsLimit'] = None
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self.connection_properties['bandwidthLimit'] = None
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def check_for_setup_error(self):
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if (not self.protection_domain_name and
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not self.protection_domain_id):
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LOG.warning(_LW("No protection domain name or id "
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"was specified in configuration."))
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if self.protection_domain_name and self.protection_domain_id:
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msg = _("Cannot specify both protection domain name "
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"and protection domain id.")
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raise exception.InvalidInput(reason=msg)
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if not self.server_ip:
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msg = _("REST server IP must by specified.")
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raise exception.InvalidInput(reason=msg)
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if not self.server_username:
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msg = _("REST server username must by specified.")
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raise exception.InvalidInput(reason=msg)
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if not self.server_password:
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msg = _("REST server password must by specified.")
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raise exception.InvalidInput(reason=msg)
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if not self.verify_server_certificate:
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LOG.warning(_LW("Verify certificate is not set, using default of "
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"False."))
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if self.verify_server_certificate and not self.server_certificate_path:
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msg = _("Path to REST server's certificate must be specified.")
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raise exception.InvalidInput(reason=msg)
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if self.storage_pool_name and self.storage_pool_id:
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msg = _("Cannot specify both storage pool name and storage "
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"pool id.")
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raise exception.InvalidInput(reason=msg)
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if not self.storage_pool_name and not self.storage_pool_id:
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msg = _("Must specify storage pool name or id.")
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raise exception.InvalidInput(reason=msg)
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if not self.storage_pools:
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msg = (_("Must specify storage pools. Option: "
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"sio_storage_pools."))
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raise exception.InvalidInput(reason=msg)
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if (self.configuration.max_over_subscription_ratio is not None and
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(self.configuration.max_over_subscription_ratio -
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SIO_MAX_OVERSUBSCRIPTION_RATIO > 1)):
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msg = (_("Max over subscription is configured to %(ratio)1f "
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"while ScaleIO support up to %(sio_ratio)s.") %
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{'sio_ratio': SIO_MAX_OVERSUBSCRIPTION_RATIO,
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'ratio': self.configuration.max_over_subscription_ratio})
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raise exception.InvalidInput(reason=msg)
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def _find_storage_pool_id_from_storage_type(self, storage_type):
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# Default to what was configured in configuration file if not defined.
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return storage_type.get(STORAGE_POOL_ID,
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self.storage_pool_id)
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def _find_storage_pool_name_from_storage_type(self, storage_type):
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return storage_type.get(STORAGE_POOL_NAME,
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self.storage_pool_name)
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def _find_protection_domain_id_from_storage_type(self, storage_type):
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# Default to what was configured in configuration file if not defined.
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return storage_type.get(PROTECTION_DOMAIN_ID,
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self.protection_domain_id)
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def _find_protection_domain_name_from_storage_type(self, storage_type):
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# Default to what was configured in configuration file if not defined.
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return storage_type.get(PROTECTION_DOMAIN_NAME,
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self.protection_domain_name)
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def _find_provisioning_type(self, storage_type):
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new_provisioning_type = storage_type.get(PROVISIONING_KEY)
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old_provisioning_type = storage_type.get(OLD_PROVISIONING_KEY)
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if new_provisioning_type is None and old_provisioning_type is not None:
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LOG.info(_LI("Using sio:provisioning_type for defining "
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"thin or thick volume will be deprecated in the "
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"Ocata release of OpenStack. Please use "
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"provisioning:type configuration option."))
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provisioning_type = old_provisioning_type
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else:
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provisioning_type = new_provisioning_type
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if provisioning_type is not None:
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if provisioning_type not in ('thick', 'thin'):
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msg = _("Illegal provisioning type. The supported "
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"provisioning types are 'thick' or 'thin'.")
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raise exception.VolumeBackendAPIException(data=msg)
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return provisioning_type
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else:
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return self.provisioning_type
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def _find_limit(self, storage_type, qos_key, extraspecs_key):
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qos_limit = (storage_type.get(qos_key)
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if qos_key is not None else None)
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extraspecs_limit = (storage_type.get(extraspecs_key)
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if extraspecs_key is not None else None)
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if extraspecs_limit is not None:
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if qos_limit is not None:
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LOG.warning(_LW("QoS specs are overriding extra_specs."))
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else:
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LOG.info(_LI("Using extra_specs for defining QoS specs "
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"will be deprecated in the N release "
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"of OpenStack. Please use QoS specs."))
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return qos_limit if qos_limit is not None else extraspecs_limit
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def _id_to_base64(self, id):
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# Base64 encode the id to get a volume name less than 32 characters due
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# to ScaleIO limitation.
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name = six.text_type(id).replace("-", "")
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try:
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name = base64.b16decode(name.upper())
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except (TypeError, binascii.Error):
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pass
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encoded_name = name
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if isinstance(encoded_name, six.text_type):
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encoded_name = encoded_name.encode('utf-8')
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encoded_name = base64.b64encode(encoded_name)
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if six.PY3:
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encoded_name = encoded_name.decode('ascii')
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LOG.debug("Converted id %(id)s to scaleio name %(name)s.",
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{'id': id, 'name': encoded_name})
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return encoded_name
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def create_volume(self, volume):
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"""Creates a scaleIO volume."""
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self._check_volume_size(volume.size)
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volname = self._id_to_base64(volume.id)
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storage_type = self._get_volumetype_extraspecs(volume)
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storage_pool_name = self._find_storage_pool_name_from_storage_type(
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storage_type)
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storage_pool_id = self._find_storage_pool_id_from_storage_type(
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storage_type)
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protection_domain_id = (
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self._find_protection_domain_id_from_storage_type(storage_type))
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protection_domain_name = (
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self._find_protection_domain_name_from_storage_type(storage_type))
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provisioning_type = self._find_provisioning_type(storage_type)
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LOG.info(_LI(
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"Volume type: %(volume_type)s, "
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"storage pool name: %(pool_name)s, "
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"storage pool id: %(pool_id)s, protection domain id: "
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"%(domain_id)s, protection domain name: %(domain_name)s."),
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{'volume_type': storage_type,
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'pool_name': storage_pool_name,
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'pool_id': storage_pool_id,
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'domain_id': protection_domain_id,
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'domain_name': protection_domain_name})
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verify_cert = self._get_verify_cert()
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if storage_pool_name:
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self.storage_pool_name = storage_pool_name
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self.storage_pool_id = None
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if storage_pool_id:
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self.storage_pool_id = storage_pool_id
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self.storage_pool_name = None
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if protection_domain_name:
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self.protection_domain_name = protection_domain_name
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self.protection_domain_id = None
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if protection_domain_id:
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self.protection_domain_id = protection_domain_id
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self.protection_domain_name = None
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domain_id = self.protection_domain_id
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if not domain_id:
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if not self.protection_domain_name:
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msg = _("Must specify protection domain name or"
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" protection domain id.")
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raise exception.VolumeBackendAPIException(data=msg)
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domain_name = self.protection_domain_name
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encoded_domain_name = urllib.parse.quote(domain_name, '')
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req_vars = {'server_ip': self.server_ip,
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'server_port': self.server_port,
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'encoded_domain_name': encoded_domain_name}
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request = ("https://%(server_ip)s:%(server_port)s"
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"/api/types/Domain/instances/getByName::"
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"%(encoded_domain_name)s") % req_vars
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LOG.info(_LI("ScaleIO get domain id by name request: %s."),
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request)
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r = requests.get(
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request,
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auth=(
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self.server_username,
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self.server_token),
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verify=verify_cert)
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r = self._check_response(r, request)
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domain_id = r.json()
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if not domain_id:
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msg = (_("Domain with name %s wasn't found.")
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% self.protection_domain_name)
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LOG.error(msg)
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raise exception.VolumeBackendAPIException(data=msg)
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if r.status_code != OK_STATUS_CODE and "errorCode" in domain_id:
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msg = (_("Error getting domain id from name %(name)s: %(id)s.")
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% {'name': self.protection_domain_name,
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'id': domain_id['message']})
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LOG.error(msg)
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raise exception.VolumeBackendAPIException(data=msg)
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LOG.info(_LI("Domain id is %s."), domain_id)
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pool_name = self.storage_pool_name
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pool_id = self.storage_pool_id
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if pool_name:
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encoded_domain_name = urllib.parse.quote(pool_name, '')
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req_vars = {'server_ip': self.server_ip,
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'server_port': self.server_port,
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'domain_id': domain_id,
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'encoded_domain_name': encoded_domain_name}
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request = ("https://%(server_ip)s:%(server_port)s"
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"/api/types/Pool/instances/getByName::"
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"%(domain_id)s,%(encoded_domain_name)s") % req_vars
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LOG.info(_LI("ScaleIO get pool id by name request: %s."), request)
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r = requests.get(
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request,
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auth=(
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self.server_username,
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self.server_token),
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verify=verify_cert)
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pool_id = r.json()
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if not pool_id:
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msg = (_("Pool with name %(pool_name)s wasn't found in "
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"domain %(domain_id)s.")
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% {'pool_name': pool_name,
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'domain_id': domain_id})
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LOG.error(msg)
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raise exception.VolumeBackendAPIException(data=msg)
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if r.status_code != OK_STATUS_CODE and "errorCode" in pool_id:
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msg = (_("Error getting pool id from name %(pool_name)s: "
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"%(err_msg)s.")
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% {'pool_name': pool_name,
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'err_msg': pool_id['message']})
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LOG.error(msg)
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raise exception.VolumeBackendAPIException(data=msg)
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LOG.info(_LI("Pool id is %s."), pool_id)
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if provisioning_type == 'thin':
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provisioning = "ThinProvisioned"
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# Default volume type is thick.
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else:
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provisioning = "ThickProvisioned"
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# units.Mi = 1024 ** 2
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volume_size_kb = volume.size * units.Mi
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|
params = {'protectionDomainId': domain_id,
|
|
'volumeSizeInKb': six.text_type(volume_size_kb),
|
|
'name': volname,
|
|
'volumeType': provisioning,
|
|
'storagePoolId': pool_id}
|
|
|
|
LOG.info(_LI("Params for add volume request: %s."), params)
|
|
r = requests.post(
|
|
"https://" +
|
|
self.server_ip +
|
|
":" +
|
|
self.server_port +
|
|
"/api/types/Volume/instances",
|
|
data=json.dumps(params),
|
|
headers=self._get_headers(),
|
|
auth=(
|
|
self.server_username,
|
|
self.server_token),
|
|
verify=verify_cert)
|
|
response = r.json()
|
|
LOG.info(_LI("Add volume response: %s"), response)
|
|
|
|
if r.status_code != OK_STATUS_CODE and "errorCode" in response:
|
|
msg = (_("Error creating volume: %s.") % response['message'])
|
|
LOG.error(msg)
|
|
raise exception.VolumeBackendAPIException(data=msg)
|
|
|
|
LOG.info(_LI("Created volume %(volname)s, volume id %(volid)s."),
|
|
{'volname': volname, 'volid': volume.id})
|
|
|
|
real_size = int(self._round_to_num_gran(volume.size))
|
|
|
|
return {'provider_id': response['id'], 'size': real_size}
|
|
|
|
def _check_volume_size(self, size):
|
|
if size % 8 != 0:
|
|
round_volume_capacity = (
|
|
self.configuration.sio_round_volume_capacity)
|
|
if not round_volume_capacity:
|
|
exception_msg = (_(
|
|
"Cannot create volume of size %s: "
|
|
"not multiple of 8GB.") % size)
|
|
LOG.error(exception_msg)
|
|
raise exception.VolumeBackendAPIException(data=exception_msg)
|
|
|
|
def create_snapshot(self, snapshot):
|
|
"""Creates a scaleio snapshot."""
|
|
volume_id = snapshot.volume.provider_id
|
|
snapname = self._id_to_base64(snapshot.id)
|
|
return self._snapshot_volume(volume_id, snapname)
|
|
|
|
def _snapshot_volume(self, vol_id, snapname):
|
|
LOG.info(_LI("Snapshot volume %(vol)s into snapshot %(id)s.") %
|
|
{'vol': vol_id, 'id': snapname})
|
|
params = {
|
|
'snapshotDefs': [{"volumeId": vol_id, "snapshotName": snapname}]}
|
|
req_vars = {'server_ip': self.server_ip,
|
|
'server_port': self.server_port}
|
|
request = ("https://%(server_ip)s:%(server_port)s"
|
|
"/api/instances/System/action/snapshotVolumes") % req_vars
|
|
r, response = self._execute_scaleio_post_request(params, request)
|
|
LOG.info(_LI("Snapshot volume response: %s."), response)
|
|
if r.status_code != OK_STATUS_CODE and "errorCode" in response:
|
|
msg = (_("Failed creating snapshot for volume %(volname)s: "
|
|
"%(response)s.") %
|
|
{'volname': vol_id,
|
|
'response': response['message']})
|
|
LOG.error(msg)
|
|
raise exception.VolumeBackendAPIException(data=msg)
|
|
|
|
return {'provider_id': response['volumeIdList'][0]}
|
|
|
|
def _execute_scaleio_post_request(self, params, request):
|
|
r = requests.post(
|
|
request,
|
|
data=json.dumps(params),
|
|
headers=self._get_headers(),
|
|
auth=(
|
|
self.server_username,
|
|
self.server_token),
|
|
verify=self._get_verify_cert())
|
|
r = self._check_response(r, request, False, params)
|
|
response = r.json()
|
|
return r, response
|
|
|
|
def _check_response(self, response, request, is_get_request=True,
|
|
params=None):
|
|
if response.status_code == 401 or response.status_code == 403:
|
|
LOG.info(_LI("Token is invalid, going to re-login and get "
|
|
"a new one."))
|
|
login_request = (
|
|
"https://" + self.server_ip +
|
|
":" + self.server_port + "/api/login")
|
|
verify_cert = self._get_verify_cert()
|
|
r = requests.get(
|
|
login_request,
|
|
auth=(
|
|
self.server_username,
|
|
self.server_password),
|
|
verify=verify_cert)
|
|
token = r.json()
|
|
self.server_token = token
|
|
# Repeat request with valid token.
|
|
LOG.info(_LI(
|
|
"Going to perform request again %s with valid token."),
|
|
request)
|
|
if is_get_request:
|
|
res = requests.get(request,
|
|
auth=(self.server_username,
|
|
self.server_token),
|
|
verify=verify_cert)
|
|
else:
|
|
res = requests.post(request,
|
|
data=json.dumps(params),
|
|
headers=self._get_headers(),
|
|
auth=(self.server_username,
|
|
self.server_token),
|
|
verify=verify_cert)
|
|
return res
|
|
return response
|
|
|
|
def create_volume_from_snapshot(self, volume, snapshot):
|
|
"""Creates a volume from a snapshot."""
|
|
# We interchange 'volume' and 'snapshot' because in ScaleIO
|
|
# snapshot is a volume: once a snapshot is generated it
|
|
# becomes a new unmapped volume in the system and the user
|
|
# may manipulate it in the same manner as any other volume
|
|
# exposed by the system
|
|
volume_id = snapshot.provider_id
|
|
snapname = self._id_to_base64(volume.id)
|
|
LOG.info(_LI(
|
|
"ScaleIO create volume from snapshot: snapshot %(snapname)s "
|
|
"to volume %(volname)s."),
|
|
{'volname': volume_id,
|
|
'snapname': snapname})
|
|
|
|
return self._snapshot_volume(volume_id, snapname)
|
|
|
|
def _get_headers(self):
|
|
return {'content-type': 'application/json'}
|
|
|
|
def _get_verify_cert(self):
|
|
verify_cert = False
|
|
if self.verify_server_certificate:
|
|
verify_cert = self.server_certificate_path
|
|
return verify_cert
|
|
|
|
def extend_volume(self, volume, new_size):
|
|
"""Extends the size of an existing available ScaleIO volume.
|
|
|
|
This action will round up the volume to the nearest size that is
|
|
a granularity of 8 GBs.
|
|
"""
|
|
return self._extend_volume(volume['provider_id'], volume.size,
|
|
new_size)
|
|
|
|
def _extend_volume(self, volume_id, old_size, new_size):
|
|
vol_id = volume_id
|
|
LOG.info(_LI(
|
|
"ScaleIO extend volume: volume %(volname)s to size %(new_size)s."),
|
|
{'volname': vol_id,
|
|
'new_size': new_size})
|
|
|
|
req_vars = {'server_ip': self.server_ip,
|
|
'server_port': self.server_port,
|
|
'vol_id': vol_id}
|
|
request = ("https://%(server_ip)s:%(server_port)s"
|
|
"/api/instances/Volume::%(vol_id)s"
|
|
"/action/setVolumeSize") % req_vars
|
|
LOG.info(_LI("Change volume capacity request: %s."), request)
|
|
|
|
# Round up the volume size so that it is a granularity of 8 GBs
|
|
# because ScaleIO only supports volumes with a granularity of 8 GBs.
|
|
volume_new_size = self._round_to_num_gran(new_size)
|
|
volume_real_old_size = self._round_to_num_gran(old_size)
|
|
if volume_real_old_size == volume_new_size:
|
|
return
|
|
|
|
round_volume_capacity = self.configuration.sio_round_volume_capacity
|
|
if not round_volume_capacity and not new_size % 8 == 0:
|
|
LOG.warning(_LW("ScaleIO only supports volumes with a granularity "
|
|
"of 8 GBs. The new volume size is: %d."),
|
|
volume_new_size)
|
|
|
|
params = {'sizeInGB': six.text_type(volume_new_size)}
|
|
r, response = self._execute_scaleio_post_request(params, request)
|
|
if r.status_code != OK_STATUS_CODE:
|
|
response = r.json()
|
|
msg = (_("Error extending volume %(vol)s: %(err)s.")
|
|
% {'vol': vol_id,
|
|
'err': response['message']})
|
|
LOG.error(msg)
|
|
raise exception.VolumeBackendAPIException(data=msg)
|
|
|
|
def _round_to_num_gran(self, size, num=8):
|
|
if size % num == 0:
|
|
return size
|
|
return size + num - (size % num)
|
|
|
|
def _round_down_to_num_gran(self, size, num=8):
|
|
return size - (size % num)
|
|
|
|
def create_cloned_volume(self, volume, src_vref):
|
|
"""Creates a cloned volume."""
|
|
volume_id = src_vref['provider_id']
|
|
snapname = self._id_to_base64(volume.id)
|
|
LOG.info(_LI(
|
|
"ScaleIO create cloned volume: source volume %(src)s to "
|
|
"target volume %(tgt)s."),
|
|
{'src': volume_id,
|
|
'tgt': snapname})
|
|
|
|
ret = self._snapshot_volume(volume_id, snapname)
|
|
if volume.size > src_vref.size:
|
|
self._extend_volume(ret['provider_id'], src_vref.size, volume.size)
|
|
|
|
return ret
|
|
|
|
def delete_volume(self, volume):
|
|
"""Deletes a self.logical volume"""
|
|
volume_id = volume['provider_id']
|
|
self._delete_volume(volume_id)
|
|
|
|
def _delete_volume(self, vol_id):
|
|
verify_cert = self._get_verify_cert()
|
|
|
|
req_vars = {'server_ip': self.server_ip,
|
|
'server_port': self.server_port,
|
|
'vol_id': six.text_type(vol_id)}
|
|
|
|
unmap_before_delete = (
|
|
self.configuration.sio_unmap_volume_before_deletion)
|
|
# Ensure that the volume is not mapped to any SDC before deletion in
|
|
# case unmap_before_deletion is enabled.
|
|
if unmap_before_delete:
|
|
params = {'allSdcs': ''}
|
|
request = ("https://%(server_ip)s:%(server_port)s"
|
|
"/api/instances/Volume::%(vol_id)s"
|
|
"/action/removeMappedSdc") % req_vars
|
|
LOG.info(_LI(
|
|
"Trying to unmap volume from all sdcs"
|
|
" before deletion: %s."),
|
|
request)
|
|
r = requests.post(
|
|
request,
|
|
data=json.dumps(params),
|
|
headers=self._get_headers(),
|
|
auth=(
|
|
self.server_username,
|
|
self.server_token),
|
|
verify=verify_cert
|
|
)
|
|
r = self._check_response(r, request, False, params)
|
|
LOG.debug("Unmap volume response: %s.", r.text)
|
|
|
|
params = {'removeMode': 'ONLY_ME'}
|
|
request = ("https://%(server_ip)s:%(server_port)s"
|
|
"/api/instances/Volume::%(vol_id)s"
|
|
"/action/removeVolume") % req_vars
|
|
r = requests.post(
|
|
request,
|
|
data=json.dumps(params),
|
|
headers=self._get_headers(),
|
|
auth=(self.server_username,
|
|
self.server_token),
|
|
verify=verify_cert
|
|
)
|
|
r = self._check_response(r, request, False, params)
|
|
|
|
if r.status_code != OK_STATUS_CODE:
|
|
response = r.json()
|
|
error_code = response['errorCode']
|
|
if error_code == VOLUME_NOT_FOUND_ERROR:
|
|
LOG.warning(_LW(
|
|
"Ignoring error in delete volume %s:"
|
|
" Volume not found."), vol_id)
|
|
elif vol_id is None:
|
|
LOG.warning(_LW(
|
|
"Volume does not have provider_id thus does not "
|
|
"map to a ScaleIO volume. "
|
|
"Allowing deletion to proceed."))
|
|
else:
|
|
msg = (_("Error deleting volume %(vol)s: %(err)s.") %
|
|
{'vol': vol_id,
|
|
'err': response['message']})
|
|
LOG.error(msg)
|
|
raise exception.VolumeBackendAPIException(data=msg)
|
|
|
|
def delete_snapshot(self, snapshot):
|
|
"""Deletes a ScaleIO snapshot."""
|
|
snap_id = snapshot.provider_id
|
|
LOG.info(_LI("ScaleIO delete snapshot."))
|
|
return self._delete_volume(snap_id)
|
|
|
|
def initialize_connection(self, volume, connector):
|
|
"""Initializes the connection and returns connection info.
|
|
|
|
The scaleio driver returns a driver_volume_type of 'scaleio'.
|
|
"""
|
|
|
|
LOG.debug("Connector is %s.", connector)
|
|
connection_properties = dict(self.connection_properties)
|
|
|
|
volname = self._id_to_base64(volume.id)
|
|
connection_properties['scaleIO_volname'] = volname
|
|
connection_properties['scaleIO_volume_id'] = volume.provider_id
|
|
extra_specs = self._get_volumetype_extraspecs(volume)
|
|
qos_specs = self._get_volumetype_qos(volume)
|
|
storage_type = extra_specs.copy()
|
|
storage_type.update(qos_specs)
|
|
LOG.info(_LI("Volume type is %s."), storage_type)
|
|
round_volume_size = self._round_to_num_gran(volume.size)
|
|
iops_limit = self._get_iops_limit(round_volume_size, storage_type)
|
|
bandwidth_limit = self._get_bandwidth_limit(round_volume_size,
|
|
storage_type)
|
|
LOG.info(_LI("iops limit is %s"), iops_limit)
|
|
LOG.info(_LI("bandwidth limit is %s"), bandwidth_limit)
|
|
connection_properties['iopsLimit'] = iops_limit
|
|
connection_properties['bandwidthLimit'] = bandwidth_limit
|
|
return {'driver_volume_type': 'scaleio',
|
|
'data': connection_properties}
|
|
|
|
def _get_bandwidth_limit(self, size, storage_type):
|
|
try:
|
|
max_bandwidth = self._find_limit(storage_type, QOS_BANDWIDTH_LIMIT,
|
|
BANDWIDTH_LIMIT)
|
|
if max_bandwidth is not None:
|
|
max_bandwidth = (self._round_to_num_gran(int(max_bandwidth),
|
|
units.Ki))
|
|
max_bandwidth = six.text_type(max_bandwidth)
|
|
LOG.info(_LI("max bandwidth is: %s"), max_bandwidth)
|
|
bw_per_gb = self._find_limit(storage_type, QOS_BANDWIDTH_PER_GB,
|
|
None)
|
|
LOG.info(_LI("bandwidth per gb is: %s"), bw_per_gb)
|
|
if bw_per_gb is None:
|
|
return max_bandwidth
|
|
# Since ScaleIO volumes size is in 8GB granularity
|
|
# and BWS limitation is in 1024 KBs granularity, we need to make
|
|
# sure that scaled_bw_limit is in 128 granularity.
|
|
scaled_bw_limit = (size *
|
|
self._round_to_num_gran(int(bw_per_gb),
|
|
MIN_BWS_SCALING_SIZE))
|
|
if max_bandwidth is None or scaled_bw_limit < int(max_bandwidth):
|
|
return six.text_type(scaled_bw_limit)
|
|
else:
|
|
return max_bandwidth
|
|
except ValueError:
|
|
msg = _("None numeric BWS QoS limitation")
|
|
raise exception.InvalidInput(reason=msg)
|
|
|
|
def _get_iops_limit(self, size, storage_type):
|
|
max_iops = self._find_limit(storage_type, QOS_IOPS_LIMIT_KEY,
|
|
IOPS_LIMIT_KEY)
|
|
LOG.info(_LI("max iops is: %s"), max_iops)
|
|
iops_per_gb = self._find_limit(storage_type, QOS_IOPS_PER_GB, None)
|
|
LOG.info(_LI("iops per gb is: %s"), iops_per_gb)
|
|
try:
|
|
if iops_per_gb is None:
|
|
if max_iops is not None:
|
|
return six.text_type(max_iops)
|
|
else:
|
|
return None
|
|
scaled_iops_limit = size * int(iops_per_gb)
|
|
if max_iops is None or scaled_iops_limit < int(max_iops):
|
|
return six.text_type(scaled_iops_limit)
|
|
else:
|
|
return six.text_type(max_iops)
|
|
except ValueError:
|
|
msg = _("None numeric IOPS QoS limitation")
|
|
raise exception.InvalidInput(reason=msg)
|
|
|
|
def terminate_connection(self, volume, connector, **kwargs):
|
|
LOG.debug("scaleio driver terminate connection.")
|
|
|
|
def _update_volume_stats(self):
|
|
stats = {}
|
|
|
|
backend_name = self.configuration.safe_get('volume_backend_name')
|
|
stats['volume_backend_name'] = backend_name or 'scaleio'
|
|
stats['vendor_name'] = 'EMC'
|
|
stats['driver_version'] = self.VERSION
|
|
stats['storage_protocol'] = 'scaleio'
|
|
stats['reserved_percentage'] = 0
|
|
stats['QoS_support'] = True
|
|
stats['consistencygroup_support'] = True
|
|
stats['thick_provisioning_support'] = True
|
|
stats['thin_provisioning_support'] = True
|
|
pools = []
|
|
|
|
verify_cert = self._get_verify_cert()
|
|
|
|
free_capacity = 0
|
|
total_capacity = 0
|
|
provisioned_capacity = 0
|
|
|
|
for sp_name in self.storage_pools:
|
|
splitted_name = sp_name.split(':')
|
|
domain_name = splitted_name[0]
|
|
pool_name = splitted_name[1]
|
|
LOG.debug("domain name is %(domain)s, pool name is %(pool)s.",
|
|
{'domain': domain_name,
|
|
'pool': pool_name})
|
|
# Get domain id from name.
|
|
encoded_domain_name = urllib.parse.quote(domain_name, '')
|
|
req_vars = {'server_ip': self.server_ip,
|
|
'server_port': self.server_port,
|
|
'encoded_domain_name': encoded_domain_name}
|
|
request = ("https://%(server_ip)s:%(server_port)s"
|
|
"/api/types/Domain/instances/getByName::"
|
|
"%(encoded_domain_name)s") % req_vars
|
|
LOG.info(_LI("ScaleIO get domain id by name request: %s."),
|
|
request)
|
|
LOG.info(_LI("username: %(username)s, verify_cert: %(verify)s."),
|
|
{'username': self.server_username,
|
|
'verify': verify_cert})
|
|
r = requests.get(
|
|
request,
|
|
auth=(
|
|
self.server_username,
|
|
self.server_token),
|
|
verify=verify_cert)
|
|
r = self._check_response(r, request)
|
|
LOG.info(_LI("Get domain by name response: %s"), r.text)
|
|
domain_id = r.json()
|
|
if not domain_id:
|
|
msg = (_("Domain with name %s wasn't found.")
|
|
% self.protection_domain_name)
|
|
LOG.error(msg)
|
|
raise exception.VolumeBackendAPIException(data=msg)
|
|
if r.status_code != OK_STATUS_CODE and "errorCode" in domain_id:
|
|
msg = (_("Error getting domain id from name %(name)s: "
|
|
"%(err)s.")
|
|
% {'name': self.protection_domain_name,
|
|
'err': domain_id['message']})
|
|
LOG.error(msg)
|
|
raise exception.VolumeBackendAPIException(data=msg)
|
|
LOG.info(_LI("Domain id is %s."), domain_id)
|
|
|
|
# Get pool id from name.
|
|
encoded_pool_name = urllib.parse.quote(pool_name, '')
|
|
req_vars = {'server_ip': self.server_ip,
|
|
'server_port': self.server_port,
|
|
'domain_id': domain_id,
|
|
'encoded_pool_name': encoded_pool_name}
|
|
request = ("https://%(server_ip)s:%(server_port)s"
|
|
"/api/types/Pool/instances/getByName::"
|
|
"%(domain_id)s,%(encoded_pool_name)s") % req_vars
|
|
LOG.info(_LI("ScaleIO get pool id by name request: %s."), request)
|
|
r = requests.get(
|
|
request,
|
|
auth=(
|
|
self.server_username,
|
|
self.server_token),
|
|
verify=verify_cert)
|
|
pool_id = r.json()
|
|
if not pool_id:
|
|
msg = (_("Pool with name %(pool)s wasn't found in domain "
|
|
"%(domain)s.")
|
|
% {'pool': pool_name,
|
|
'domain': domain_id})
|
|
LOG.error(msg)
|
|
raise exception.VolumeBackendAPIException(data=msg)
|
|
if r.status_code != OK_STATUS_CODE and "errorCode" in pool_id:
|
|
msg = (_("Error getting pool id from name %(pool)s: "
|
|
"%(err)s.")
|
|
% {'pool': pool_name,
|
|
'err': pool_id['message']})
|
|
LOG.error(msg)
|
|
raise exception.VolumeBackendAPIException(data=msg)
|
|
LOG.info(_LI("Pool id is %s."), pool_id)
|
|
req_vars = {'server_ip': self.server_ip,
|
|
'server_port': self.server_port}
|
|
request = ("https://%(server_ip)s:%(server_port)s"
|
|
"/api/types/StoragePool/instances/action/"
|
|
"querySelectedStatistics") % req_vars
|
|
# The 'Km' in thinCapacityAllocatedInKm is a bug in REST API
|
|
params = {'ids': [pool_id], 'properties': [
|
|
"capacityAvailableForVolumeAllocationInKb",
|
|
"capacityLimitInKb", "spareCapacityInKb",
|
|
"thickCapacityInUseInKb", "thinCapacityAllocatedInKm"]}
|
|
r = requests.post(
|
|
request,
|
|
data=json.dumps(params),
|
|
headers=self._get_headers(),
|
|
auth=(
|
|
self.server_username,
|
|
self.server_token),
|
|
verify=verify_cert)
|
|
response = r.json()
|
|
LOG.info(_LI("Query capacity stats response: %s."), response)
|
|
for res in response.values():
|
|
# Divide by two because ScaleIO creates a copy for each volume
|
|
total_capacity_kb = (
|
|
(res['capacityLimitInKb'] - res['spareCapacityInKb']) / 2)
|
|
total_capacity_gb = (self._round_down_to_num_gran
|
|
(total_capacity_kb / units.Mi))
|
|
# This property is already rounded
|
|
# to 8 GB granularity in backend
|
|
free_capacity_gb = (
|
|
res['capacityAvailableForVolumeAllocationInKb'] / units.Mi)
|
|
# Divide by two because ScaleIO creates a copy for each volume
|
|
provisioned_capacity = (
|
|
((res['thickCapacityInUseInKb'] +
|
|
res['thinCapacityAllocatedInKm']) / 2) / units.Mi)
|
|
LOG.info(_LI(
|
|
"free capacity of pool %(pool)s is: %(free)s, "
|
|
"total capacity: %(total)s, "
|
|
"provisioned capacity: %(prov)s"),
|
|
{'pool': pool_name,
|
|
'free': free_capacity_gb,
|
|
'total': total_capacity_gb,
|
|
'prov': provisioned_capacity})
|
|
pool = {'pool_name': sp_name,
|
|
'total_capacity_gb': total_capacity_gb,
|
|
'free_capacity_gb': free_capacity_gb,
|
|
'QoS_support': True,
|
|
'consistencygroup_support': True,
|
|
'reserved_percentage': 0,
|
|
'thin_provisioning_support': True,
|
|
'thick_provisioning_support': True,
|
|
'provisioned_capacity_gb': provisioned_capacity,
|
|
'max_over_subscription_ratio':
|
|
self.configuration.max_over_subscription_ratio
|
|
}
|
|
|
|
pools.append(pool)
|
|
free_capacity += free_capacity_gb
|
|
total_capacity += total_capacity_gb
|
|
|
|
stats['total_capacity_gb'] = total_capacity
|
|
stats['free_capacity_gb'] = free_capacity
|
|
LOG.info(_LI(
|
|
"Free capacity for backend is: %(free)s, total capacity: "
|
|
"%(total)s."),
|
|
{'free': free_capacity,
|
|
'total': total_capacity})
|
|
|
|
stats['pools'] = pools
|
|
|
|
LOG.info(_LI("Backend name is %s."), stats["volume_backend_name"])
|
|
|
|
self._stats = stats
|
|
|
|
def get_volume_stats(self, refresh=False):
|
|
"""Get volume stats.
|
|
|
|
If 'refresh' is True, run update the stats first.
|
|
"""
|
|
if refresh:
|
|
self._update_volume_stats()
|
|
|
|
return self._stats
|
|
|
|
def _get_volumetype_extraspecs(self, volume):
|
|
specs = {}
|
|
ctxt = context.get_admin_context()
|
|
type_id = volume['volume_type_id']
|
|
if type_id:
|
|
volume_type = volume_types.get_volume_type(ctxt, type_id)
|
|
specs = volume_type.get('extra_specs')
|
|
for key, value in specs.items():
|
|
specs[key] = value
|
|
|
|
return specs
|
|
|
|
def _get_volumetype_qos(self, volume):
|
|
qos = {}
|
|
ctxt = context.get_admin_context()
|
|
type_id = volume['volume_type_id']
|
|
if type_id:
|
|
volume_type = volume_types.get_volume_type(ctxt, type_id)
|
|
qos_specs_id = volume_type.get('qos_specs_id')
|
|
if qos_specs_id is not None:
|
|
specs = qos_specs.get_qos_specs(ctxt, qos_specs_id)['specs']
|
|
else:
|
|
specs = {}
|
|
for key, value in specs.items():
|
|
if key in self.scaleio_qos_keys:
|
|
qos[key] = value
|
|
return qos
|
|
|
|
def _sio_attach_volume(self, volume):
|
|
"""Call connector.connect_volume() and return the path. """
|
|
LOG.debug("Calling os-brick to attach ScaleIO volume.")
|
|
connection_properties = dict(self.connection_properties)
|
|
connection_properties['scaleIO_volname'] = self._id_to_base64(
|
|
volume.id)
|
|
connection_properties['scaleIO_volume_id'] = volume.provider_id
|
|
device_info = self.connector.connect_volume(connection_properties)
|
|
return device_info['path']
|
|
|
|
def _sio_detach_volume(self, volume):
|
|
"""Call the connector.disconnect() """
|
|
LOG.info(_LI("Calling os-brick to detach ScaleIO volume."))
|
|
connection_properties = dict(self.connection_properties)
|
|
connection_properties['scaleIO_volname'] = self._id_to_base64(
|
|
volume.id)
|
|
connection_properties['scaleIO_volume_id'] = volume.provider_id
|
|
self.connector.disconnect_volume(connection_properties, volume)
|
|
|
|
def copy_image_to_volume(self, context, volume, image_service, image_id):
|
|
"""Fetch the image from image_service and write it to the volume."""
|
|
LOG.info(_LI(
|
|
"ScaleIO copy_image_to_volume volume: %(vol)s image service: "
|
|
"%(service)s image id: %(id)s."),
|
|
{'vol': volume,
|
|
'service': six.text_type(image_service),
|
|
'id': six.text_type(image_id)})
|
|
|
|
try:
|
|
image_utils.fetch_to_raw(context,
|
|
image_service,
|
|
image_id,
|
|
self._sio_attach_volume(volume),
|
|
BLOCK_SIZE,
|
|
size=volume['size'])
|
|
|
|
finally:
|
|
self._sio_detach_volume(volume)
|
|
|
|
def copy_volume_to_image(self, context, volume, image_service, image_meta):
|
|
"""Copy the volume to the specified image."""
|
|
LOG.info(_LI(
|
|
"ScaleIO copy_volume_to_image volume: %(vol)s image service: "
|
|
"%(service)s image meta: %(meta)s."),
|
|
{'vol': volume,
|
|
'service': six.text_type(image_service),
|
|
'meta': six.text_type(image_meta)})
|
|
try:
|
|
image_utils.upload_volume(context,
|
|
image_service,
|
|
image_meta,
|
|
self._sio_attach_volume(volume))
|
|
finally:
|
|
self._sio_detach_volume(volume)
|
|
|
|
def update_migrated_volume(self, ctxt, volume, new_volume,
|
|
original_volume_status):
|
|
"""Return the update from ScaleIO migrated volume.
|
|
|
|
This method updates the volume name of the new ScaleIO volume to
|
|
match the updated volume ID.
|
|
The original volume is renamed first since ScaleIO does not allow
|
|
multiple volumes to have the same name.
|
|
"""
|
|
name_id = None
|
|
location = None
|
|
if original_volume_status == 'available':
|
|
# During migration, a new volume is created and will replace
|
|
# the original volume at the end of the migration. We need to
|
|
# rename the new volume. The current_name of the new volume,
|
|
# which is the id of the new volume, will be changed to the
|
|
# new_name, which is the id of the original volume.
|
|
current_name = new_volume['id']
|
|
new_name = volume['id']
|
|
vol_id = new_volume['provider_id']
|
|
LOG.info(_LI("Renaming %(id)s from %(current_name)s to "
|
|
"%(new_name)s."),
|
|
{'id': vol_id, 'current_name': current_name,
|
|
'new_name': new_name})
|
|
|
|
# Original volume needs to be renamed first
|
|
self._rename_volume(volume, "ff" + new_name)
|
|
self._rename_volume(new_volume, new_name)
|
|
else:
|
|
# The back-end will not be renamed.
|
|
name_id = new_volume['_name_id'] or new_volume['id']
|
|
location = new_volume['provider_location']
|
|
|
|
return {'_name_id': name_id, 'provider_location': location}
|
|
|
|
def _rename_volume(self, volume, new_id):
|
|
new_name = self._id_to_base64(new_id)
|
|
vol_id = volume['provider_id']
|
|
|
|
req_vars = {'server_ip': self.server_ip,
|
|
'server_port': self.server_port,
|
|
'id': vol_id}
|
|
request = ("https://%(server_ip)s:%(server_port)s"
|
|
"/api/instances/Volume::%(id)s/action/setVolumeName" %
|
|
req_vars)
|
|
LOG.info(_LI("ScaleIO rename volume request: %s."), request)
|
|
|
|
params = {'newName': new_name}
|
|
r = requests.post(
|
|
request,
|
|
data=json.dumps(params),
|
|
headers=self._get_headers(),
|
|
auth=(self.server_username,
|
|
self.server_token),
|
|
verify=self._get_verify_cert()
|
|
)
|
|
r = self._check_response(r, request, False, params)
|
|
|
|
if r.status_code != OK_STATUS_CODE:
|
|
response = r.json()
|
|
if ((response['errorCode'] == VOLUME_NOT_FOUND_ERROR or
|
|
response['errorCode'] == OLD_VOLUME_NOT_FOUND_ERROR)):
|
|
LOG.info(_LI("Ignoring renaming action because the volume "
|
|
"%(vol)s is not a ScaleIO volume."),
|
|
{'vol': vol_id})
|
|
else:
|
|
msg = (_("Error renaming volume %(vol)s: %(err)s.") %
|
|
{'vol': vol_id, 'err': response['message']})
|
|
LOG.error(msg)
|
|
raise exception.VolumeBackendAPIException(data=msg)
|
|
else:
|
|
LOG.info(_LI("ScaleIO volume %(vol)s was renamed to "
|
|
"%(new_name)s."),
|
|
{'vol': vol_id, 'new_name': new_name})
|
|
|
|
def _query_scaleio_volume(self, volume, existing_ref):
|
|
request = self._create_scaleio_get_volume_request(volume, existing_ref)
|
|
r, response = self._execute_scaleio_get_request(request)
|
|
LOG.info(_LI("Get Volume response: %(res)s"),
|
|
{'res': response})
|
|
self._manage_existing_check_legal_response(r, existing_ref)
|
|
return response
|
|
|
|
def manage_existing(self, volume, existing_ref):
|
|
"""Manage an existing ScaleIO volume.
|
|
|
|
existing_ref is a dictionary of the form:
|
|
{'source-id': <id of ScaleIO volume>}
|
|
"""
|
|
response = self._query_scaleio_volume(volume, existing_ref)
|
|
return {'provider_id': response['id']}
|
|
|
|
def manage_existing_get_size(self, volume, existing_ref):
|
|
return self._get_volume_size(volume, existing_ref)
|
|
|
|
def manage_existing_snapshot(self, snapshot, existing_ref):
|
|
"""Manage an existing ScaleIO snapshot.
|
|
|
|
:param existing_ref: dictionary of the form:
|
|
{'source-id': <id of ScaleIO snapshot>}
|
|
"""
|
|
response = self._query_scaleio_volume(snapshot, existing_ref)
|
|
not_real_parent = (response.get('orig_parent_overriden') or
|
|
response.get('is_source_deleted'))
|
|
if not_real_parent:
|
|
reason = (_("The snapshot's parent is not the original parent due "
|
|
"to deletion or revert action, therefore "
|
|
"this snapshot cannot be managed."))
|
|
raise exception.ManageExistingInvalidReference(
|
|
existing_ref=existing_ref,
|
|
reason=reason
|
|
)
|
|
ancestor_id = response['ancestorVolumeId']
|
|
volume_id = snapshot.volume.provider_id
|
|
if ancestor_id != volume_id:
|
|
reason = (_("The snapshot's parent in ScaleIO is %(ancestor)s "
|
|
"and not %(volume)s.") %
|
|
{'ancestor': ancestor_id, 'volume': volume_id})
|
|
raise exception.ManageExistingInvalidReference(
|
|
existing_ref=existing_ref,
|
|
reason=reason
|
|
)
|
|
return {'provider_id': response['id']}
|
|
|
|
def manage_existing_snapshot_get_size(self, snapshot, existing_ref):
|
|
return self._get_volume_size(snapshot, existing_ref)
|
|
|
|
def _get_volume_size(self, volume, existing_ref):
|
|
response = self._query_scaleio_volume(volume, existing_ref)
|
|
return int(math.ceil(float(response['sizeInKb']) / units.Mi))
|
|
|
|
def _execute_scaleio_get_request(self, request):
|
|
r = requests.get(
|
|
request,
|
|
auth=(
|
|
self.server_username,
|
|
self.server_token),
|
|
verify=self._get_verify_cert())
|
|
r = self._check_response(r, request)
|
|
response = r.json()
|
|
return r, response
|
|
|
|
def _create_scaleio_get_volume_request(self, volume, existing_ref):
|
|
"""Throws an exception if the input is invalid for manage existing.
|
|
|
|
if the input is valid - return a request.
|
|
"""
|
|
type_id = volume.get('volume_type_id')
|
|
if 'source-id' not in existing_ref:
|
|
reason = _("Reference must contain source-id.")
|
|
raise exception.ManageExistingInvalidReference(
|
|
existing_ref=existing_ref,
|
|
reason=reason
|
|
)
|
|
if type_id is None:
|
|
reason = _("Volume must have a volume type")
|
|
raise exception.ManageExistingVolumeTypeMismatch(
|
|
existing_ref=existing_ref,
|
|
reason=reason
|
|
)
|
|
vol_id = existing_ref['source-id']
|
|
req_vars = {'server_ip': self.server_ip,
|
|
'server_port': self.server_port,
|
|
'id': vol_id}
|
|
request = ("https://%(server_ip)s:%(server_port)s"
|
|
"/api/instances/Volume::%(id)s" % req_vars)
|
|
LOG.info(_LI("ScaleIO get volume by id request: %s."), request)
|
|
return request
|
|
|
|
def _manage_existing_check_legal_response(self, response, existing_ref):
|
|
if response.status_code != OK_STATUS_CODE:
|
|
reason = (_("Error managing volume: %s.") % response.json()[
|
|
'message'])
|
|
raise exception.ManageExistingInvalidReference(
|
|
existing_ref=existing_ref,
|
|
reason=reason
|
|
)
|
|
|
|
if response.json()['mappedSdcInfo'] is not None:
|
|
reason = _("manage_existing cannot manage a volume "
|
|
"connected to hosts. Please disconnect this volume "
|
|
"from existing hosts before importing.")
|
|
raise exception.ManageExistingInvalidReference(
|
|
existing_ref=existing_ref,
|
|
reason=reason
|
|
)
|
|
|
|
def create_consistencygroup(self, context, group):
|
|
"""Creates a consistency group.
|
|
|
|
ScaleIO won't create CG until cg-snapshot creation,
|
|
db will maintain the volumes and CG relationship.
|
|
"""
|
|
LOG.info(_LI("Creating Consistency Group"))
|
|
model_update = {'status': 'available'}
|
|
return model_update
|
|
|
|
def delete_consistencygroup(self, context, group, volumes):
|
|
"""Deletes a consistency group.
|
|
|
|
ScaleIO will delete the volumes of the CG.
|
|
"""
|
|
LOG.info(_LI("Deleting Consistency Group"))
|
|
model_update = {'status': 'deleted'}
|
|
error_statuses = ['error', 'error_deleting']
|
|
volumes_model_update = []
|
|
for volume in volumes:
|
|
try:
|
|
self._delete_volume(volume['provider_id'])
|
|
update_item = {'id': volume['id'],
|
|
'status': 'deleted'}
|
|
volumes_model_update.append(update_item)
|
|
except exception.VolumeBackendAPIException as err:
|
|
update_item = {'id': volume['id'],
|
|
'status': 'error_deleting'}
|
|
volumes_model_update.append(update_item)
|
|
if model_update['status'] not in error_statuses:
|
|
model_update['status'] = 'error_deleting'
|
|
LOG.error(_LE("Failed to delete the volume %(vol)s of CG. "
|
|
"Exception: %(exception)s."),
|
|
{'vol': volume['name'], 'exception': err})
|
|
return model_update, volumes_model_update
|
|
|
|
def create_cgsnapshot(self, context, cgsnapshot, snapshots):
|
|
"""Creates a cgsnapshot."""
|
|
get_scaleio_snapshot_params = lambda snapshot: {
|
|
'volumeId': snapshot.volume['provider_id'],
|
|
'snapshotName': self._id_to_base64(snapshot['id'])}
|
|
snapshotDefs = list(map(get_scaleio_snapshot_params, snapshots))
|
|
r, response = self._snapshot_volume_group(snapshotDefs)
|
|
LOG.info(_LI("Snapshot volume response: %s."), response)
|
|
if r.status_code != OK_STATUS_CODE and "errorCode" in response:
|
|
msg = (_("Failed creating snapshot for group: "
|
|
"%(response)s.") %
|
|
{'response': response['message']})
|
|
LOG.error(msg)
|
|
raise exception.VolumeBackendAPIException(data=msg)
|
|
snapshot_model_update = []
|
|
for snapshot, scaleio_id in zip(snapshots, response['volumeIdList']):
|
|
update_item = {'id': snapshot['id'],
|
|
'status': 'available',
|
|
'provider_id': scaleio_id}
|
|
snapshot_model_update.append(update_item)
|
|
model_update = {'status': 'available'}
|
|
return model_update, snapshot_model_update
|
|
|
|
def delete_cgsnapshot(self, context, cgsnapshot, snapshots):
|
|
"""Deletes a cgsnapshot."""
|
|
error_statuses = ['error', 'error_deleting']
|
|
model_update = {'status': cgsnapshot['status']}
|
|
snapshot_model_update = []
|
|
for snapshot in snapshots:
|
|
try:
|
|
self._delete_volume(snapshot.provider_id)
|
|
update_item = {'id': snapshot['id'],
|
|
'status': 'deleted'}
|
|
snapshot_model_update.append(update_item)
|
|
except exception.VolumeBackendAPIException as err:
|
|
update_item = {'id': snapshot['id'],
|
|
'status': 'error_deleting'}
|
|
snapshot_model_update.append(update_item)
|
|
if model_update['status'] not in error_statuses:
|
|
model_update['status'] = 'error_deleting'
|
|
LOG.error(_LE("Failed to delete the snapshot %(snap)s "
|
|
"of cgsnapshot: %(cgsnapshot_id)s. "
|
|
"Exception: %(exception)s."),
|
|
{'snap': snapshot['name'],
|
|
'exception': err,
|
|
'cgsnapshot_id': cgsnapshot.id})
|
|
model_update['status'] = 'deleted'
|
|
return model_update, snapshot_model_update
|
|
|
|
def create_consistencygroup_from_src(self, context, group, volumes,
|
|
cgsnapshot=None, snapshots=None,
|
|
source_cg=None, source_vols=None):
|
|
"""Creates a consistency group from a source."""
|
|
get_scaleio_snapshot_params = lambda src_volume, trg_volume: {
|
|
'volumeId': src_volume['provider_id'],
|
|
'snapshotName': self._id_to_base64(trg_volume['id'])}
|
|
if cgsnapshot and snapshots:
|
|
snapshotDefs = map(get_scaleio_snapshot_params, snapshots, volumes)
|
|
else:
|
|
snapshotDefs = map(get_scaleio_snapshot_params, source_vols,
|
|
volumes)
|
|
r, response = self._snapshot_volume_group(list(snapshotDefs))
|
|
LOG.info(_LI("Snapshot volume response: %s."), response)
|
|
if r.status_code != OK_STATUS_CODE and "errorCode" in response:
|
|
msg = (_("Failed creating snapshot for group: "
|
|
"%(response)s.") %
|
|
{'response': response['message']})
|
|
LOG.error(msg)
|
|
raise exception.VolumeBackendAPIException(data=msg)
|
|
volumes_model_update = []
|
|
for volume, scaleio_id in zip(volumes, response['volumeIdList']):
|
|
update_item = {'id': volume['id'],
|
|
'status': 'available',
|
|
'provider_id': scaleio_id}
|
|
volumes_model_update.append(update_item)
|
|
model_update = {'status': 'available'}
|
|
return model_update, volumes_model_update
|
|
|
|
def update_consistencygroup(self, context, group,
|
|
add_volumes=None, remove_volumes=None):
|
|
"""Update a consistency group.
|
|
|
|
ScaleIO does not handle volume grouping.
|
|
Cinder maintains volumes and CG relationship.
|
|
"""
|
|
return None, None, None
|
|
|
|
def _snapshot_volume_group(self, snapshotDefs):
|
|
LOG.info(_LI("ScaleIO snapshot group of volumes"))
|
|
params = {'snapshotDefs': snapshotDefs}
|
|
req_vars = {'server_ip': self.server_ip,
|
|
'server_port': self.server_port}
|
|
request = ("https://%(server_ip)s:%(server_port)s"
|
|
"/api/instances/System/action/snapshotVolumes") % req_vars
|
|
return self._execute_scaleio_post_request(params, request)
|
|
|
|
def ensure_export(self, context, volume):
|
|
"""Driver entry point to get the export info for an existing volume."""
|
|
pass
|
|
|
|
def create_export(self, context, volume, connector):
|
|
"""Driver entry point to get the export info for a new volume."""
|
|
pass
|
|
|
|
def remove_export(self, context, volume):
|
|
"""Driver entry point to remove an export for a volume."""
|
|
pass
|
|
|
|
def check_for_export(self, context, volume_id):
|
|
"""Make sure volume is exported."""
|
|
pass
|