895 lines
39 KiB
Python
895 lines
39 KiB
Python
# vim: tabstop=4 shiftwidth=4 softtabstop=4
|
|
|
|
# Copyright 2010 United States Government as represented by the
|
|
# Administrator of the National Aeronautics and Space Administration.
|
|
# 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.
|
|
"""
|
|
Volume manager manages creating, attaching, detaching, and persistent storage.
|
|
|
|
Persistent storage volumes keep their state independent of instances. You can
|
|
attach to an instance, terminate the instance, spawn a new instance (even
|
|
one from a different image) and re-attach the volume with the same data
|
|
intact.
|
|
|
|
**Related Flags**
|
|
|
|
:volume_topic: What :mod:`rpc` topic to listen to (default: `cinder-volume`).
|
|
:volume_manager: The module name of a class derived from
|
|
:class:`manager.Manager` (default:
|
|
:class:`cinder.volume.manager.Manager`).
|
|
:volume_driver: Used by :class:`Manager`. Defaults to
|
|
:class:`cinder.volume.drivers.lvm.LVMISCSIDriver`.
|
|
:volume_group: Name of the group that will contain exported volumes (default:
|
|
`cinder-volumes`)
|
|
:num_shell_tries: Number of times to attempt to run commands (default: 3)
|
|
|
|
"""
|
|
|
|
|
|
import time
|
|
|
|
from oslo.config import cfg
|
|
|
|
from cinder.brick.initiator import connector as initiator
|
|
from cinder import compute
|
|
from cinder import context
|
|
from cinder import exception
|
|
from cinder.image import glance
|
|
from cinder import manager
|
|
from cinder.openstack.common import excutils
|
|
from cinder.openstack.common import importutils
|
|
from cinder.openstack.common import log as logging
|
|
from cinder.openstack.common import periodic_task
|
|
from cinder.openstack.common import timeutils
|
|
from cinder.openstack.common import uuidutils
|
|
from cinder import quota
|
|
from cinder import utils
|
|
from cinder.volume.configuration import Configuration
|
|
from cinder.volume.flows import create_volume
|
|
from cinder.volume import rpcapi as volume_rpcapi
|
|
from cinder.volume import utils as volume_utils
|
|
from cinder.volume import volume_types
|
|
|
|
from cinder.taskflow import states
|
|
|
|
from eventlet.greenpool import GreenPool
|
|
|
|
LOG = logging.getLogger(__name__)
|
|
|
|
QUOTAS = quota.QUOTAS
|
|
|
|
volume_manager_opts = [
|
|
cfg.StrOpt('volume_driver',
|
|
default='cinder.volume.drivers.lvm.LVMISCSIDriver',
|
|
help='Driver to use for volume creation'),
|
|
cfg.IntOpt('migration_create_volume_timeout_secs',
|
|
default=300,
|
|
help='Timeout for creating the volume to migrate to '
|
|
'when performing volume migration (seconds)'),
|
|
cfg.BoolOpt('volume_service_inithost_offload',
|
|
default=False,
|
|
help='Offload pending volume delete during '
|
|
'volume service startup'),
|
|
]
|
|
|
|
CONF = cfg.CONF
|
|
CONF.register_opts(volume_manager_opts)
|
|
|
|
MAPPING = {
|
|
'cinder.volume.driver.RBDDriver': 'cinder.volume.drivers.rbd.RBDDriver',
|
|
'cinder.volume.driver.SheepdogDriver':
|
|
'cinder.volume.drivers.sheepdog.SheepdogDriver',
|
|
'cinder.volume.nexenta.volume.NexentaDriver':
|
|
'cinder.volume.drivers.nexenta.iscsi.NexentaISCSIDriver',
|
|
'cinder.volume.drivers.nexenta.volume.NexentaDriver':
|
|
'cinder.volume.drivers.nexenta.iscsi.NexentaISCSIDriver',
|
|
'cinder.volume.san.SanISCSIDriver':
|
|
'cinder.volume.drivers.san.san.SanISCSIDriver',
|
|
'cinder.volume.san.SolarisISCSIDriver':
|
|
'cinder.volume.drivers.san.solaris.SolarisISCSIDriver',
|
|
'cinder.volume.san.HpSanISCSIDriver':
|
|
'cinder.volume.drivers.san.hp_lefthand.HpSanISCSIDriver',
|
|
'cinder.volume.nfs.NfsDriver':
|
|
'cinder.volume.drivers.nfs.NfsDriver',
|
|
'cinder.volume.solidfire.SolidFire':
|
|
'cinder.volume.drivers.solidfire.SolidFireDriver',
|
|
'cinder.volume.drivers.solidfire.SolidFire':
|
|
'cinder.volume.drivers.solidfire.SolidFireDriver',
|
|
'cinder.volume.storwize_svc.StorwizeSVCDriver':
|
|
'cinder.volume.drivers.storwize_svc.StorwizeSVCDriver',
|
|
'cinder.volume.windows.WindowsDriver':
|
|
'cinder.volume.drivers.windows.windows.WindowsDriver',
|
|
'cinder.volume.drivers.windows.WindowsDriver':
|
|
'cinder.volume.drivers.windows.windows.WindowsDriver',
|
|
'cinder.volume.xiv.XIVDriver':
|
|
'cinder.volume.drivers.xiv_ds8k.XIVDS8KDriver',
|
|
'cinder.volume.drivers.xiv.XIVDriver':
|
|
'cinder.volume.drivers.xiv_ds8k.XIVDS8KDriver',
|
|
'cinder.volume.zadara.ZadaraVPSAISCSIDriver':
|
|
'cinder.volume.drivers.zadara.ZadaraVPSAISCSIDriver',
|
|
'cinder.volume.driver.ISCSIDriver':
|
|
'cinder.volume.drivers.lvm.LVMISCSIDriver',
|
|
'cinder.volume.netapp.NetAppISCSIDriver':
|
|
'cinder.volume.drivers.netapp.common.Deprecated',
|
|
'cinder.volume.drivers.netapp.iscsi.NetAppISCSIDriver':
|
|
'cinder.volume.drivers.netapp.common.Deprecated',
|
|
'cinder.volume.netapp.NetAppCmodeISCSIDriver':
|
|
'cinder.volume.drivers.netapp.common.Deprecated',
|
|
'cinder.volume.drivers.netapp.iscsi.NetAppCmodeISCSIDriver':
|
|
'cinder.volume.drivers.netapp.common.Deprecated',
|
|
'cinder.volume.netapp_nfs.NetAppNFSDriver':
|
|
'cinder.volume.drivers.netapp.common.Deprecated',
|
|
'cinder.volume.drivers.netapp.nfs.NetAppNFSDriver':
|
|
'cinder.volume.drivers.netapp.common.Deprecated',
|
|
'cinder.volume.drivers.netapp.nfs.NetAppCmodeNfsDriver':
|
|
'cinder.volume.drivers.netapp.common.Deprecated',
|
|
'cinder.volume.drivers.huawei.HuaweiISCSIDriver':
|
|
'cinder.volume.drivers.huawei.HuaweiVolumeDriver'}
|
|
|
|
|
|
class VolumeManager(manager.SchedulerDependentManager):
|
|
"""Manages attachable block storage devices."""
|
|
|
|
RPC_API_VERSION = '1.11'
|
|
|
|
def __init__(self, volume_driver=None, service_name=None,
|
|
*args, **kwargs):
|
|
"""Load the driver from the one specified in args, or from flags."""
|
|
# update_service_capabilities needs service_name to be volume
|
|
super(VolumeManager, self).__init__(service_name='volume',
|
|
*args, **kwargs)
|
|
self.configuration = Configuration(volume_manager_opts,
|
|
config_group=service_name)
|
|
self._tp = GreenPool()
|
|
|
|
if not volume_driver:
|
|
# Get from configuration, which will get the default
|
|
# if its not using the multi backend
|
|
volume_driver = self.configuration.volume_driver
|
|
if volume_driver in MAPPING:
|
|
LOG.warn(_("Driver path %s is deprecated, update your "
|
|
"configuration to the new path."), volume_driver)
|
|
volume_driver = MAPPING[volume_driver]
|
|
if volume_driver == 'cinder.volume.drivers.lvm.ThinLVMVolumeDriver':
|
|
# Deprecated in Havana
|
|
# Not handled in MAPPING because it requires setting a conf option
|
|
LOG.warn(_("ThinLVMVolumeDriver is deprecated, please configure "
|
|
"LVMISCSIDriver and lvm_type=thin. Continuing with "
|
|
"those settings."))
|
|
volume_driver = 'cinder.volume.drivers.lvm.LVMISCSIDriver'
|
|
self.configuration.lvm_type = 'thin'
|
|
self.driver = importutils.import_object(
|
|
volume_driver,
|
|
configuration=self.configuration,
|
|
db=self.db)
|
|
|
|
def _add_to_threadpool(self, func, *args, **kwargs):
|
|
self._tp.spawn_n(func, *args, **kwargs)
|
|
|
|
def init_host(self):
|
|
"""Do any initialization that needs to be run if this is a
|
|
standalone service.
|
|
"""
|
|
|
|
ctxt = context.get_admin_context()
|
|
LOG.info(_("Starting volume driver %(driver_name)s (%(version)s)") %
|
|
{'driver_name': self.driver.__class__.__name__,
|
|
'version': self.driver.get_version()})
|
|
try:
|
|
self.driver.do_setup(ctxt)
|
|
self.driver.check_for_setup_error()
|
|
except Exception as ex:
|
|
LOG.error(_("Error encountered during "
|
|
"initialization of driver: %(name)s") %
|
|
{'name': self.driver.__class__.__name__})
|
|
LOG.exception(ex)
|
|
# we don't want to continue since we failed
|
|
# to initialize the driver correctly.
|
|
return
|
|
|
|
# at this point the driver is considered initailized.
|
|
# next re-initialize exports and clean up volumes that
|
|
# should be deleted.
|
|
self.driver.set_initialized()
|
|
|
|
volumes = self.db.volume_get_all_by_host(ctxt, self.host)
|
|
LOG.debug(_("Re-exporting %s volumes"), len(volumes))
|
|
for volume in volumes:
|
|
if volume['status'] in ['available', 'in-use']:
|
|
self.driver.ensure_export(ctxt, volume)
|
|
elif volume['status'] == 'downloading':
|
|
LOG.info(_("volume %s stuck in a downloading state"),
|
|
volume['id'])
|
|
self.driver.clear_download(ctxt, volume)
|
|
self.db.volume_update(ctxt, volume['id'], {'status': 'error'})
|
|
else:
|
|
LOG.info(_("volume %s: skipping export"), volume['id'])
|
|
|
|
LOG.debug(_('Resuming any in progress delete operations'))
|
|
for volume in volumes:
|
|
if volume['status'] == 'deleting':
|
|
LOG.info(_('Resuming delete on volume: %s') % volume['id'])
|
|
if CONF.volume_service_inithost_offload:
|
|
# Offload all the pending volume delete operations to the
|
|
# threadpool to prevent the main volume service thread
|
|
# from being blocked.
|
|
self._add_to_threadpool(self.delete_volume(ctxt,
|
|
volume['id']))
|
|
else:
|
|
# By default, delete volumes sequentially
|
|
self.delete_volume(ctxt, volume['id'])
|
|
|
|
# collect and publish service capabilities
|
|
self.publish_service_capabilities(ctxt)
|
|
|
|
@utils.require_driver_initialized
|
|
def create_volume(self, context, volume_id, request_spec=None,
|
|
filter_properties=None, allow_reschedule=True,
|
|
snapshot_id=None, image_id=None, source_volid=None):
|
|
"""Creates and exports the volume."""
|
|
|
|
flow = create_volume.get_manager_flow(
|
|
self.db,
|
|
self.driver,
|
|
self.scheduler_rpcapi,
|
|
self.host,
|
|
volume_id,
|
|
request_spec=request_spec,
|
|
filter_properties=filter_properties,
|
|
allow_reschedule=allow_reschedule,
|
|
snapshot_id=snapshot_id,
|
|
image_id=image_id,
|
|
source_volid=source_volid,
|
|
reschedule_context=context.deepcopy())
|
|
|
|
assert flow, _('Manager volume flow not retrieved')
|
|
|
|
flow.run(context.elevated())
|
|
if flow.state != states.SUCCESS:
|
|
raise exception.CinderException(_("Failed to successfully complete"
|
|
" manager volume workflow"))
|
|
|
|
self._reset_stats()
|
|
return volume_id
|
|
|
|
@utils.require_driver_initialized
|
|
def delete_volume(self, context, volume_id):
|
|
"""Deletes and unexports volume."""
|
|
context = context.elevated()
|
|
volume_ref = self.db.volume_get(context, volume_id)
|
|
|
|
if context.project_id != volume_ref['project_id']:
|
|
project_id = volume_ref['project_id']
|
|
else:
|
|
project_id = context.project_id
|
|
|
|
LOG.info(_("volume %s: deleting"), volume_ref['id'])
|
|
if volume_ref['attach_status'] == "attached":
|
|
# Volume is still attached, need to detach first
|
|
raise exception.VolumeAttached(volume_id=volume_id)
|
|
if volume_ref['host'] != self.host:
|
|
raise exception.InvalidVolume(
|
|
reason=_("volume is not local to this node"))
|
|
|
|
self._notify_about_volume_usage(context, volume_ref, "delete.start")
|
|
self._reset_stats()
|
|
try:
|
|
LOG.debug(_("volume %s: removing export"), volume_ref['id'])
|
|
self.driver.remove_export(context, volume_ref)
|
|
LOG.debug(_("volume %s: deleting"), volume_ref['id'])
|
|
self.driver.delete_volume(volume_ref)
|
|
except exception.VolumeIsBusy:
|
|
LOG.error(_("Cannot delete volume %s: volume is busy"),
|
|
volume_ref['id'])
|
|
self.driver.ensure_export(context, volume_ref)
|
|
self.db.volume_update(context, volume_ref['id'],
|
|
{'status': 'available'})
|
|
return True
|
|
except Exception:
|
|
with excutils.save_and_reraise_exception():
|
|
self.db.volume_update(context,
|
|
volume_ref['id'],
|
|
{'status': 'error_deleting'})
|
|
|
|
# If deleting the source volume in a migration, we want to skip quotas
|
|
# and other database updates.
|
|
if volume_ref['migration_status']:
|
|
return True
|
|
|
|
# Get reservations
|
|
try:
|
|
reserve_opts = {'volumes': -1, 'gigabytes': -volume_ref['size']}
|
|
QUOTAS.add_volume_type_opts(context,
|
|
reserve_opts,
|
|
volume_ref.get('volume_type_id'))
|
|
reservations = QUOTAS.reserve(context,
|
|
project_id=project_id,
|
|
**reserve_opts)
|
|
except Exception:
|
|
reservations = None
|
|
LOG.exception(_("Failed to update usages deleting volume"))
|
|
|
|
# Delete glance metadata if it exists
|
|
try:
|
|
self.db.volume_glance_metadata_delete_by_volume(context, volume_id)
|
|
LOG.debug(_("volume %s: glance metadata deleted"),
|
|
volume_ref['id'])
|
|
except exception.GlanceMetadataNotFound:
|
|
LOG.debug(_("no glance metadata found for volume %s"),
|
|
volume_ref['id'])
|
|
|
|
self.db.volume_destroy(context, volume_id)
|
|
LOG.info(_("volume %s: deleted successfully"), volume_ref['id'])
|
|
self._notify_about_volume_usage(context, volume_ref, "delete.end")
|
|
|
|
# Commit the reservations
|
|
if reservations:
|
|
QUOTAS.commit(context, reservations, project_id=project_id)
|
|
|
|
self.publish_service_capabilities(context)
|
|
|
|
return True
|
|
|
|
@utils.require_driver_initialized
|
|
def create_snapshot(self, context, volume_id, snapshot_id):
|
|
"""Creates and exports the snapshot."""
|
|
caller_context = context
|
|
context = context.elevated()
|
|
snapshot_ref = self.db.snapshot_get(context, snapshot_id)
|
|
LOG.info(_("snapshot %s: creating"), snapshot_ref['id'])
|
|
|
|
self._notify_about_snapshot_usage(
|
|
context, snapshot_ref, "create.start")
|
|
|
|
try:
|
|
LOG.debug(_("snapshot %(snap_id)s: creating"),
|
|
{'snap_id': snapshot_ref['id']})
|
|
|
|
# Pass context so that drivers that want to use it, can,
|
|
# but it is not a requirement for all drivers.
|
|
snapshot_ref['context'] = caller_context
|
|
|
|
model_update = self.driver.create_snapshot(snapshot_ref)
|
|
if model_update:
|
|
self.db.snapshot_update(context, snapshot_ref['id'],
|
|
model_update)
|
|
|
|
except Exception:
|
|
with excutils.save_and_reraise_exception():
|
|
self.db.snapshot_update(context,
|
|
snapshot_ref['id'],
|
|
{'status': 'error'})
|
|
|
|
self.db.snapshot_update(context,
|
|
snapshot_ref['id'], {'status': 'available',
|
|
'progress': '100%'})
|
|
|
|
vol_ref = self.db.volume_get(context, volume_id)
|
|
if vol_ref.bootable:
|
|
try:
|
|
self.db.volume_glance_metadata_copy_to_snapshot(
|
|
context, snapshot_ref['id'], volume_id)
|
|
except exception.CinderException as ex:
|
|
LOG.exception(_("Failed updating %(snapshot_id)s"
|
|
" metadata using the provided volumes"
|
|
" %(volume_id)s metadata") %
|
|
{'volume_id': volume_id,
|
|
'snapshot_id': snapshot_id})
|
|
raise exception.MetadataCopyFailure(reason=ex)
|
|
LOG.info(_("snapshot %s: created successfully"), snapshot_ref['id'])
|
|
self._notify_about_snapshot_usage(context, snapshot_ref, "create.end")
|
|
return snapshot_id
|
|
|
|
@utils.require_driver_initialized
|
|
def delete_snapshot(self, context, snapshot_id):
|
|
"""Deletes and unexports snapshot."""
|
|
caller_context = context
|
|
context = context.elevated()
|
|
snapshot_ref = self.db.snapshot_get(context, snapshot_id)
|
|
project_id = snapshot_ref['project_id']
|
|
|
|
LOG.info(_("snapshot %s: deleting"), snapshot_ref['id'])
|
|
self._notify_about_snapshot_usage(
|
|
context, snapshot_ref, "delete.start")
|
|
|
|
try:
|
|
LOG.debug(_("snapshot %s: deleting"), snapshot_ref['id'])
|
|
|
|
# Pass context so that drivers that want to use it, can,
|
|
# but it is not a requirement for all drivers.
|
|
snapshot_ref['context'] = caller_context
|
|
|
|
self.driver.delete_snapshot(snapshot_ref)
|
|
except exception.SnapshotIsBusy:
|
|
LOG.error(_("Cannot delete snapshot %s: snapshot is busy"),
|
|
snapshot_ref['id'])
|
|
self.db.snapshot_update(context,
|
|
snapshot_ref['id'],
|
|
{'status': 'available'})
|
|
return True
|
|
except Exception:
|
|
with excutils.save_and_reraise_exception():
|
|
self.db.snapshot_update(context,
|
|
snapshot_ref['id'],
|
|
{'status': 'error_deleting'})
|
|
|
|
# Get reservations
|
|
try:
|
|
if CONF.no_snapshot_gb_quota:
|
|
reserve_opts = {'snapshots': -1}
|
|
else:
|
|
reserve_opts = {
|
|
'snapshots': -1,
|
|
'gigabytes': -snapshot_ref['volume_size'],
|
|
}
|
|
volume_ref = self.db.volume_get(context, snapshot_ref['volume_id'])
|
|
QUOTAS.add_volume_type_opts(context,
|
|
reserve_opts,
|
|
volume_ref.get('volume_type_id'))
|
|
reservations = QUOTAS.reserve(context,
|
|
project_id=project_id,
|
|
**reserve_opts)
|
|
except Exception:
|
|
reservations = None
|
|
LOG.exception(_("Failed to update usages deleting snapshot"))
|
|
self.db.volume_glance_metadata_delete_by_snapshot(context, snapshot_id)
|
|
self.db.snapshot_destroy(context, snapshot_id)
|
|
LOG.info(_("snapshot %s: deleted successfully"), snapshot_ref['id'])
|
|
self._notify_about_snapshot_usage(context, snapshot_ref, "delete.end")
|
|
|
|
# Commit the reservations
|
|
if reservations:
|
|
QUOTAS.commit(context, reservations, project_id=project_id)
|
|
return True
|
|
|
|
@utils.require_driver_initialized
|
|
def attach_volume(self, context, volume_id, instance_uuid, host_name,
|
|
mountpoint, mode):
|
|
"""Updates db to show volume is attached"""
|
|
@utils.synchronized(volume_id, external=True)
|
|
def do_attach():
|
|
# check the volume status before attaching
|
|
volume = self.db.volume_get(context, volume_id)
|
|
volume_metadata = self.db.volume_admin_metadata_get(
|
|
context.elevated(), volume_id)
|
|
if volume['status'] == 'attaching':
|
|
if (volume['instance_uuid'] and volume['instance_uuid'] !=
|
|
instance_uuid):
|
|
msg = _("being attached by another instance")
|
|
raise exception.InvalidVolume(reason=msg)
|
|
if (volume['attached_host'] and volume['attached_host'] !=
|
|
host_name):
|
|
msg = _("being attached by another host")
|
|
raise exception.InvalidVolume(reason=msg)
|
|
if (volume_metadata.get('attached_mode') and
|
|
volume_metadata.get('attached_mode') != mode):
|
|
msg = _("being attached by different mode")
|
|
raise exception.InvalidVolume(reason=msg)
|
|
elif volume['status'] != "available":
|
|
msg = _("status must be available")
|
|
raise exception.InvalidVolume(reason=msg)
|
|
|
|
# TODO(jdg): attach_time column is currently varchar
|
|
# we should update this to a date-time object
|
|
# also consider adding detach_time?
|
|
self.db.volume_update(context, volume_id,
|
|
{"instance_uuid": instance_uuid,
|
|
"attached_host": host_name,
|
|
"status": "attaching",
|
|
"attach_time": timeutils.strtime()})
|
|
self.db.volume_admin_metadata_update(context.elevated(),
|
|
volume_id,
|
|
{"attached_mode": mode},
|
|
False)
|
|
|
|
if instance_uuid and not uuidutils.is_uuid_like(instance_uuid):
|
|
self.db.volume_update(context, volume_id,
|
|
{'status': 'error_attaching'})
|
|
raise exception.InvalidUUID(uuid=instance_uuid)
|
|
|
|
host_name_sanitized = utils.sanitize_hostname(
|
|
host_name) if host_name else None
|
|
|
|
volume = self.db.volume_get(context, volume_id)
|
|
|
|
if volume_metadata.get('readonly') == 'True' and mode != 'ro':
|
|
self.db.volume_update(context, volume_id,
|
|
{'status': 'error_attaching'})
|
|
raise exception.InvalidVolumeAttachMode(mode=mode,
|
|
volume_id=volume_id)
|
|
try:
|
|
self.driver.attach_volume(context,
|
|
volume,
|
|
instance_uuid,
|
|
host_name_sanitized,
|
|
mountpoint)
|
|
except Exception:
|
|
with excutils.save_and_reraise_exception():
|
|
self.db.volume_update(context, volume_id,
|
|
{'status': 'error_attaching'})
|
|
|
|
self.db.volume_attached(context.elevated(),
|
|
volume_id,
|
|
instance_uuid,
|
|
host_name_sanitized,
|
|
mountpoint)
|
|
return do_attach()
|
|
|
|
@utils.require_driver_initialized
|
|
def detach_volume(self, context, volume_id):
|
|
"""Updates db to show volume is detached"""
|
|
# TODO(vish): refactor this into a more general "unreserve"
|
|
# TODO(sleepsonthefloor): Is this 'elevated' appropriate?
|
|
|
|
volume = self.db.volume_get(context, volume_id)
|
|
try:
|
|
self.driver.detach_volume(context, volume)
|
|
except Exception:
|
|
with excutils.save_and_reraise_exception():
|
|
self.db.volume_update(context,
|
|
volume_id,
|
|
{'status': 'error_detaching'})
|
|
|
|
self.db.volume_detached(context.elevated(), volume_id)
|
|
self.db.volume_admin_metadata_delete(context.elevated(), volume_id,
|
|
'attached_mode')
|
|
|
|
# Check for https://bugs.launchpad.net/cinder/+bug/1065702
|
|
volume = self.db.volume_get(context, volume_id)
|
|
if (volume['provider_location'] and
|
|
volume['name'] not in volume['provider_location']):
|
|
self.driver.ensure_export(context, volume)
|
|
|
|
@utils.require_driver_initialized
|
|
def copy_volume_to_image(self, context, volume_id, image_meta):
|
|
"""Uploads the specified volume to Glance.
|
|
|
|
image_meta is a dictionary containing the following keys:
|
|
'id', 'container_format', 'disk_format'
|
|
|
|
"""
|
|
payload = {'volume_id': volume_id, 'image_id': image_meta['id']}
|
|
try:
|
|
volume = self.db.volume_get(context, volume_id)
|
|
self.driver.ensure_export(context.elevated(), volume)
|
|
image_service, image_id = \
|
|
glance.get_remote_image_service(context, image_meta['id'])
|
|
self.driver.copy_volume_to_image(context, volume, image_service,
|
|
image_meta)
|
|
LOG.debug(_("Uploaded volume %(volume_id)s to "
|
|
"image (%(image_id)s) successfully"),
|
|
{'volume_id': volume_id, 'image_id': image_id})
|
|
except Exception as error:
|
|
with excutils.save_and_reraise_exception():
|
|
payload['message'] = unicode(error)
|
|
finally:
|
|
if (volume['instance_uuid'] is None and
|
|
volume['attached_host'] is None):
|
|
self.db.volume_update(context, volume_id,
|
|
{'status': 'available'})
|
|
else:
|
|
self.db.volume_update(context, volume_id,
|
|
{'status': 'in-use'})
|
|
|
|
@utils.require_driver_initialized
|
|
def initialize_connection(self, context, volume_id, connector):
|
|
"""Prepare volume for connection from host represented by connector.
|
|
|
|
This method calls the driver initialize_connection and returns
|
|
it to the caller. The connector parameter is a dictionary with
|
|
information about the host that will connect to the volume in the
|
|
following format::
|
|
|
|
{
|
|
'ip': ip,
|
|
'initiator': initiator,
|
|
}
|
|
|
|
ip: the ip address of the connecting machine
|
|
|
|
initiator: the iscsi initiator name of the connecting machine.
|
|
This can be None if the connecting machine does not support iscsi
|
|
connections.
|
|
|
|
driver is responsible for doing any necessary security setup and
|
|
returning a connection_info dictionary in the following format::
|
|
|
|
{
|
|
'driver_volume_type': driver_volume_type,
|
|
'data': data,
|
|
}
|
|
|
|
driver_volume_type: a string to identify the type of volume. This
|
|
can be used by the calling code to determine the
|
|
strategy for connecting to the volume. This could
|
|
be 'iscsi', 'rbd', 'sheepdog', etc.
|
|
|
|
data: this is the data that the calling code will use to connect
|
|
to the volume. Keep in mind that this will be serialized to
|
|
json in various places, so it should not contain any non-json
|
|
data types.
|
|
"""
|
|
volume = self.db.volume_get(context, volume_id)
|
|
self.driver.validate_connector(connector)
|
|
conn_info = self.driver.initialize_connection(volume, connector)
|
|
|
|
# Add qos_specs to connection info
|
|
typeid = volume['volume_type_id']
|
|
specs = {}
|
|
if typeid:
|
|
res = volume_types.get_volume_type_qos_specs(typeid)
|
|
specs = res['qos_specs']
|
|
|
|
# Don't pass qos_spec as empty dict
|
|
qos_spec = dict(qos_spec=specs if specs else None)
|
|
|
|
conn_info['data'].update(qos_spec)
|
|
|
|
# Add access_mode to connection info
|
|
volume_metadata = self.db.volume_admin_metadata_get(context.elevated(),
|
|
volume_id)
|
|
if conn_info['data'].get('access_mode') is None:
|
|
access_mode = volume_metadata.get('attached_mode')
|
|
if access_mode is None:
|
|
# NOTE(zhiyan): client didn't call 'os-attach' before
|
|
access_mode = ('ro'
|
|
if volume_metadata.get('readonly') == 'True'
|
|
else 'rw')
|
|
conn_info['data']['access_mode'] = access_mode
|
|
return conn_info
|
|
|
|
@utils.require_driver_initialized
|
|
def terminate_connection(self, context, volume_id, connector, force=False):
|
|
"""Cleanup connection from host represented by connector.
|
|
|
|
The format of connector is the same as for initialize_connection.
|
|
"""
|
|
volume_ref = self.db.volume_get(context, volume_id)
|
|
self.driver.terminate_connection(volume_ref, connector, force=force)
|
|
|
|
@utils.require_driver_initialized
|
|
def accept_transfer(self, context, volume_id, new_user, new_project):
|
|
# NOTE(jdg): need elevated context as we haven't "given" the vol
|
|
# yet
|
|
volume_ref = self.db.volume_get(context.elevated(), volume_id)
|
|
self.driver.accept_transfer(context, volume_ref, new_user, new_project)
|
|
|
|
def _migrate_volume_generic(self, ctxt, volume, host):
|
|
rpcapi = volume_rpcapi.VolumeAPI()
|
|
|
|
# Create new volume on remote host
|
|
new_vol_values = {}
|
|
for k, v in volume.iteritems():
|
|
new_vol_values[k] = v
|
|
del new_vol_values['id']
|
|
del new_vol_values['_name_id']
|
|
# We don't copy volume_type because the db sets that according to
|
|
# volume_type_id, which we do copy
|
|
del new_vol_values['volume_type']
|
|
new_vol_values['host'] = host['host']
|
|
new_vol_values['status'] = 'creating'
|
|
new_vol_values['migration_status'] = 'target:%s' % volume['id']
|
|
new_vol_values['attach_status'] = 'detached'
|
|
new_volume = self.db.volume_create(ctxt, new_vol_values)
|
|
rpcapi.create_volume(ctxt, new_volume, host['host'],
|
|
None, None, allow_reschedule=False)
|
|
|
|
# Wait for new_volume to become ready
|
|
starttime = time.time()
|
|
deadline = starttime + CONF.migration_create_volume_timeout_secs
|
|
new_volume = self.db.volume_get(ctxt, new_volume['id'])
|
|
tries = 0
|
|
while new_volume['status'] != 'available':
|
|
tries = tries + 1
|
|
now = time.time()
|
|
if new_volume['status'] == 'error':
|
|
msg = _("failed to create new_volume on destination host")
|
|
raise exception.VolumeMigrationFailed(reason=msg)
|
|
elif now > deadline:
|
|
msg = _("timeout creating new_volume on destination host")
|
|
raise exception.VolumeMigrationFailed(reason=msg)
|
|
else:
|
|
time.sleep(tries ** 2)
|
|
new_volume = self.db.volume_get(ctxt, new_volume['id'])
|
|
|
|
# Copy the source volume to the destination volume
|
|
try:
|
|
if volume['status'] == 'available':
|
|
self.driver.copy_volume_data(ctxt, volume, new_volume,
|
|
remote='dest')
|
|
# The above call is synchronous so we complete the migration
|
|
self.migrate_volume_completion(ctxt, volume['id'],
|
|
new_volume['id'], error=False)
|
|
else:
|
|
nova_api = compute.API()
|
|
# This is an async call to Nova, which will call the completion
|
|
# when it's done
|
|
nova_api.update_server_volume(ctxt, volume['instance_uuid'],
|
|
volume['id'], new_volume['id'])
|
|
except Exception:
|
|
with excutils.save_and_reraise_exception():
|
|
msg = _("Failed to copy volume %(vol1)s to %(vol2)s")
|
|
LOG.error(msg % {'vol1': volume['id'],
|
|
'vol2': new_volume['id']})
|
|
volume = self.db.volume_get(ctxt, volume['id'])
|
|
# If we're in the completing phase don't delete the target
|
|
# because we may have already deleted the source!
|
|
if volume['migration_status'] == 'migrating':
|
|
rpcapi.delete_volume(ctxt, new_volume)
|
|
new_volume['migration_status'] = None
|
|
|
|
def migrate_volume_completion(self, ctxt, volume_id, new_volume_id,
|
|
error=False):
|
|
volume = self.db.volume_get(ctxt, volume_id)
|
|
new_volume = self.db.volume_get(ctxt, new_volume_id)
|
|
rpcapi = volume_rpcapi.VolumeAPI()
|
|
|
|
if error:
|
|
new_volume['migration_status'] = None
|
|
rpcapi.delete_volume(ctxt, new_volume)
|
|
self.db.volume_update(ctxt, volume_id, {'migration_status': None})
|
|
return volume_id
|
|
|
|
self.db.volume_update(ctxt, volume_id,
|
|
{'migration_status': 'completing'})
|
|
|
|
# Delete the source volume (if it fails, don't fail the migration)
|
|
try:
|
|
self.delete_volume(ctxt, volume_id)
|
|
except Exception as ex:
|
|
msg = _("Failed to delete migration source vol %(vol)s: %(err)s")
|
|
LOG.error(msg % {'vol': volume_id, 'err': ex})
|
|
|
|
self.db.finish_volume_migration(ctxt, volume_id, new_volume_id)
|
|
self.db.volume_destroy(ctxt, new_volume_id)
|
|
self.db.volume_update(ctxt, volume_id, {'migration_status': None})
|
|
return volume['id']
|
|
|
|
@utils.require_driver_initialized
|
|
def migrate_volume(self, ctxt, volume_id, host, force_host_copy=False):
|
|
"""Migrate the volume to the specified host (called on source host)."""
|
|
volume_ref = self.db.volume_get(ctxt, volume_id)
|
|
model_update = None
|
|
moved = False
|
|
|
|
self.db.volume_update(ctxt, volume_ref['id'],
|
|
{'migration_status': 'migrating'})
|
|
if not force_host_copy:
|
|
try:
|
|
LOG.debug(_("volume %s: calling driver migrate_volume"),
|
|
volume_ref['id'])
|
|
moved, model_update = self.driver.migrate_volume(ctxt,
|
|
volume_ref,
|
|
host)
|
|
if moved:
|
|
updates = {'host': host['host'],
|
|
'migration_status': None}
|
|
if model_update:
|
|
updates.update(model_update)
|
|
volume_ref = self.db.volume_update(ctxt,
|
|
volume_ref['id'],
|
|
updates)
|
|
except Exception:
|
|
with excutils.save_and_reraise_exception():
|
|
updates = {'migration_status': None}
|
|
model_update = self.driver.create_export(ctxt, volume_ref)
|
|
if model_update:
|
|
updates.update(model_update)
|
|
self.db.volume_update(ctxt, volume_ref['id'], updates)
|
|
if not moved:
|
|
try:
|
|
self._migrate_volume_generic(ctxt, volume_ref, host)
|
|
except Exception:
|
|
with excutils.save_and_reraise_exception():
|
|
updates = {'migration_status': None}
|
|
model_update = self.driver.create_export(ctxt, volume_ref)
|
|
if model_update:
|
|
updates.update(model_update)
|
|
self.db.volume_update(ctxt, volume_ref['id'], updates)
|
|
|
|
@periodic_task.periodic_task
|
|
def _report_driver_status(self, context):
|
|
LOG.info(_("Updating volume status"))
|
|
if not self.driver.initialized:
|
|
LOG.warning(_('Unable to update stats, driver is '
|
|
'uninitialized'))
|
|
else:
|
|
volume_stats = self.driver.get_volume_stats(refresh=True)
|
|
if volume_stats:
|
|
# This will grab info about the host and queue it
|
|
# to be sent to the Schedulers.
|
|
self.update_service_capabilities(volume_stats)
|
|
|
|
def publish_service_capabilities(self, context):
|
|
"""Collect driver status and then publish."""
|
|
self._report_driver_status(context)
|
|
self._publish_service_capabilities(context)
|
|
|
|
def _reset_stats(self):
|
|
LOG.info(_("Clear capabilities"))
|
|
self._last_volume_stats = []
|
|
|
|
def notification(self, context, event):
|
|
LOG.info(_("Notification {%s} received"), event)
|
|
self._reset_stats()
|
|
|
|
def _notify_about_volume_usage(self,
|
|
context,
|
|
volume,
|
|
event_suffix,
|
|
extra_usage_info=None):
|
|
volume_utils.notify_about_volume_usage(
|
|
context, volume, event_suffix,
|
|
extra_usage_info=extra_usage_info, host=self.host)
|
|
|
|
def _notify_about_snapshot_usage(self,
|
|
context,
|
|
snapshot,
|
|
event_suffix,
|
|
extra_usage_info=None):
|
|
volume_utils.notify_about_snapshot_usage(
|
|
context, snapshot, event_suffix,
|
|
extra_usage_info=extra_usage_info, host=self.host)
|
|
|
|
@utils.require_driver_initialized
|
|
def extend_volume(self, context, volume_id, new_size):
|
|
volume = self.db.volume_get(context, volume_id)
|
|
size_increase = (int(new_size)) - volume['size']
|
|
|
|
try:
|
|
reservations = QUOTAS.reserve(context, gigabytes=+size_increase)
|
|
except exception.OverQuota as exc:
|
|
self.db.volume_update(context, volume['id'],
|
|
{'status': 'error_extending'})
|
|
overs = exc.kwargs['overs']
|
|
usages = exc.kwargs['usages']
|
|
quotas = exc.kwargs['quotas']
|
|
|
|
def _consumed(name):
|
|
return (usages[name]['reserved'] + usages[name]['in_use'])
|
|
|
|
if 'gigabytes' in overs:
|
|
msg = _("Quota exceeded for %(s_pid)s, "
|
|
"tried to extend volume by "
|
|
"%(s_size)sG, (%(d_consumed)dG of %(d_quota)dG "
|
|
"already consumed)")
|
|
LOG.error(msg % {'s_pid': context.project_id,
|
|
's_size': size_increase,
|
|
'd_consumed': _consumed('gigabytes'),
|
|
'd_quota': quotas['gigabytes']})
|
|
return
|
|
|
|
self._notify_about_volume_usage(context, volume, "resize.start")
|
|
try:
|
|
LOG.info(_("volume %s: extending"), volume['id'])
|
|
self.driver.extend_volume(volume, new_size)
|
|
LOG.info(_("volume %s: extended successfully"), volume['id'])
|
|
except Exception:
|
|
LOG.exception(_("volume %s: Error trying to extend volume"),
|
|
volume_id)
|
|
try:
|
|
self.db.volume_update(context, volume['id'],
|
|
{'status': 'error_extending'})
|
|
finally:
|
|
QUOTAS.rollback(context, reservations)
|
|
return
|
|
|
|
QUOTAS.commit(context, reservations)
|
|
self.db.volume_update(context, volume['id'], {'size': int(new_size),
|
|
'status': 'available'})
|
|
self._notify_about_volume_usage(
|
|
context, volume, "resize.end",
|
|
extra_usage_info={'size': int(new_size)})
|