766 lines
30 KiB
Python
766 lines
30 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.
|
|
|
|
"""
|
|
Handles all requests relating to volumes.
|
|
"""
|
|
|
|
|
|
import functools
|
|
|
|
from oslo.config import cfg
|
|
|
|
from cinder import context
|
|
from cinder.db import base
|
|
from cinder import exception
|
|
from cinder.image import glance
|
|
from cinder import keymgr
|
|
from cinder.openstack.common import excutils
|
|
from cinder.openstack.common import log as logging
|
|
from cinder.openstack.common import timeutils
|
|
import cinder.policy
|
|
from cinder import quota
|
|
from cinder.scheduler import rpcapi as scheduler_rpcapi
|
|
from cinder import units
|
|
from cinder import utils
|
|
from cinder.volume.flows import create_volume
|
|
from cinder.volume import rpcapi as volume_rpcapi
|
|
from cinder.volume import volume_types
|
|
|
|
from cinder.taskflow import states
|
|
|
|
|
|
volume_host_opt = cfg.BoolOpt('snapshot_same_host',
|
|
default=True,
|
|
help='Create volume from snapshot at the host '
|
|
'where snapshot resides')
|
|
volume_same_az_opt = cfg.BoolOpt('cloned_volume_same_az',
|
|
default=True,
|
|
help='Ensure that the new volumes are the '
|
|
'same AZ as snapshot or source volume')
|
|
|
|
CONF = cfg.CONF
|
|
CONF.register_opt(volume_host_opt)
|
|
CONF.register_opt(volume_same_az_opt)
|
|
CONF.import_opt('storage_availability_zone', 'cinder.volume.manager')
|
|
|
|
LOG = logging.getLogger(__name__)
|
|
QUOTAS = quota.QUOTAS
|
|
|
|
|
|
def wrap_check_policy(func):
|
|
"""Check policy corresponding to the wrapped methods prior to execution
|
|
|
|
This decorator requires the first 3 args of the wrapped function
|
|
to be (self, context, volume)
|
|
"""
|
|
@functools.wraps(func)
|
|
def wrapped(self, context, target_obj, *args, **kwargs):
|
|
check_policy(context, func.__name__, target_obj)
|
|
return func(self, context, target_obj, *args, **kwargs)
|
|
|
|
return wrapped
|
|
|
|
|
|
def check_policy(context, action, target_obj=None):
|
|
target = {
|
|
'project_id': context.project_id,
|
|
'user_id': context.user_id,
|
|
}
|
|
target.update(target_obj or {})
|
|
_action = 'volume:%s' % action
|
|
cinder.policy.enforce(context, _action, target)
|
|
|
|
|
|
class API(base.Base):
|
|
"""API for interacting with the volume manager."""
|
|
|
|
def __init__(self, db_driver=None, image_service=None):
|
|
self.image_service = (image_service or
|
|
glance.get_default_image_service())
|
|
self.scheduler_rpcapi = scheduler_rpcapi.SchedulerAPI()
|
|
self.volume_rpcapi = volume_rpcapi.VolumeAPI()
|
|
self.availability_zone_names = ()
|
|
self.key_manager = keymgr.API()
|
|
super(API, self).__init__(db_driver)
|
|
|
|
def _valid_availabilty_zone(self, availability_zone):
|
|
#NOTE(bcwaldon): This approach to caching fails to handle the case
|
|
# that an availability zone is disabled/removed.
|
|
if availability_zone in self.availability_zone_names:
|
|
return True
|
|
if CONF.storage_availability_zone == availability_zone:
|
|
return True
|
|
|
|
azs = self.list_availability_zones()
|
|
self.availability_zone_names = [az['name'] for az in azs]
|
|
return availability_zone in self.availability_zone_names
|
|
|
|
def list_availability_zones(self):
|
|
"""Describe the known availability zones
|
|
|
|
:retval list of dicts, each with a 'name' and 'available' key
|
|
"""
|
|
topic = CONF.volume_topic
|
|
ctxt = context.get_admin_context()
|
|
services = self.db.service_get_all_by_topic(ctxt, topic)
|
|
az_data = [(s['availability_zone'], s['disabled']) for s in services]
|
|
|
|
disabled_map = {}
|
|
for (az_name, disabled) in az_data:
|
|
tracked_disabled = disabled_map.get(az_name, True)
|
|
disabled_map[az_name] = tracked_disabled and disabled
|
|
|
|
azs = [{'name': name, 'available': not disabled}
|
|
for (name, disabled) in disabled_map.items()]
|
|
|
|
return tuple(azs)
|
|
|
|
def create(self, context, size, name, description, snapshot=None,
|
|
image_id=None, volume_type=None, metadata=None,
|
|
availability_zone=None, source_volume=None,
|
|
scheduler_hints=None, backup_source_volume=None):
|
|
|
|
def check_volume_az_zone(availability_zone):
|
|
try:
|
|
return self._valid_availabilty_zone(availability_zone)
|
|
except exception.CinderException:
|
|
LOG.exception(_("Unable to query if %s is in the "
|
|
"availability zone set"), availability_zone)
|
|
return False
|
|
|
|
create_what = {
|
|
'size': size,
|
|
'name': name,
|
|
'description': description,
|
|
'snapshot': snapshot,
|
|
'image_id': image_id,
|
|
'volume_type': volume_type,
|
|
'metadata': metadata,
|
|
'availability_zone': availability_zone,
|
|
'source_volume': source_volume,
|
|
'scheduler_hints': scheduler_hints,
|
|
'key_manager': self.key_manager,
|
|
'backup_source_volume': backup_source_volume,
|
|
}
|
|
(flow, uuid) = create_volume.get_api_flow(self.scheduler_rpcapi,
|
|
self.volume_rpcapi,
|
|
self.db,
|
|
self.image_service,
|
|
check_volume_az_zone,
|
|
create_what)
|
|
|
|
assert flow, _('Create volume flow not retrieved')
|
|
flow.run(context)
|
|
if flow.state != states.SUCCESS:
|
|
raise exception.CinderException(_("Failed to successfully complete"
|
|
" create volume workflow"))
|
|
|
|
# Extract the volume information from the task uuid that was specified
|
|
# to produce said information.
|
|
volume = None
|
|
try:
|
|
volume = flow.results[uuid]['volume']
|
|
except KeyError:
|
|
pass
|
|
|
|
# Raise an error, nobody provided it??
|
|
assert volume, _('Expected volume result not found')
|
|
return volume
|
|
|
|
@wrap_check_policy
|
|
def delete(self, context, volume, force=False):
|
|
if context.is_admin and context.project_id != volume['project_id']:
|
|
project_id = volume['project_id']
|
|
else:
|
|
project_id = context.project_id
|
|
|
|
volume_id = volume['id']
|
|
if not volume['host']:
|
|
# NOTE(vish): scheduling failed, so delete it
|
|
# Note(zhiteng): update volume quota reservation
|
|
try:
|
|
reserve_opts = {'volumes': -1, 'gigabytes': -volume['size']}
|
|
QUOTAS.add_volume_type_opts(context,
|
|
reserve_opts,
|
|
volume['volume_type_id'])
|
|
reservations = QUOTAS.reserve(context,
|
|
project_id=project_id,
|
|
**reserve_opts)
|
|
except Exception:
|
|
reservations = None
|
|
LOG.exception(_("Failed to update quota for deleting volume"))
|
|
self.db.volume_destroy(context.elevated(), volume_id)
|
|
|
|
if reservations:
|
|
QUOTAS.commit(context, reservations, project_id=project_id)
|
|
return
|
|
if not force and volume['status'] not in ["available", "error",
|
|
"error_restoring"]:
|
|
msg = _("Volume status must be available or error, "
|
|
"but current status is: %s") % volume['status']
|
|
raise exception.InvalidVolume(reason=msg)
|
|
|
|
if volume['attach_status'] == "attached":
|
|
# Volume is still attached, need to detach first
|
|
raise exception.VolumeAttached(volume_id=volume_id)
|
|
|
|
if volume['attach_status'] == "migrating":
|
|
# Volume is migrating, wait until done
|
|
msg = _("Volume cannot be deleted while migrating")
|
|
raise exception.InvalidVolume(reason=msg)
|
|
|
|
snapshots = self.db.snapshot_get_all_for_volume(context, volume_id)
|
|
if len(snapshots):
|
|
msg = _("Volume still has %d dependent snapshots") % len(snapshots)
|
|
raise exception.InvalidVolume(reason=msg)
|
|
|
|
# If the volume is encrypted, delete its encryption key from the key
|
|
# manager. This operation makes volume deletion an irreversible process
|
|
# because the volume cannot be decrypted without its key.
|
|
encryption_key_id = volume.get('encryption_key_id', None)
|
|
if encryption_key_id is not None:
|
|
self.key_manager.delete_key(encryption_key_id)
|
|
|
|
now = timeutils.utcnow()
|
|
self.db.volume_update(context, volume_id, {'status': 'deleting',
|
|
'terminated_at': now})
|
|
|
|
self.volume_rpcapi.delete_volume(context, volume)
|
|
|
|
@wrap_check_policy
|
|
def update(self, context, volume, fields):
|
|
self.db.volume_update(context, volume['id'], fields)
|
|
|
|
def get(self, context, volume_id):
|
|
rv = self.db.volume_get(context, volume_id)
|
|
volume = dict(rv.iteritems())
|
|
check_policy(context, 'get', volume)
|
|
return volume
|
|
|
|
def get_all(self, context, marker=None, limit=None, sort_key='created_at',
|
|
sort_dir='desc', filters={}):
|
|
check_policy(context, 'get_all')
|
|
|
|
try:
|
|
if limit is not None:
|
|
limit = int(limit)
|
|
if limit < 0:
|
|
msg = _('limit param must be positive')
|
|
raise exception.InvalidInput(reason=msg)
|
|
except ValueError:
|
|
msg = _('limit param must be an integer')
|
|
raise exception.InvalidInput(reason=msg)
|
|
|
|
if (context.is_admin and 'all_tenants' in filters):
|
|
# Need to remove all_tenants to pass the filtering below.
|
|
del filters['all_tenants']
|
|
volumes = self.db.volume_get_all(context, marker, limit, sort_key,
|
|
sort_dir)
|
|
else:
|
|
volumes = self.db.volume_get_all_by_project(context,
|
|
context.project_id,
|
|
marker, limit,
|
|
sort_key, sort_dir)
|
|
|
|
# Non-admin shouldn't see temporary target of a volume migration
|
|
if not context.is_admin:
|
|
filters['no_migration_targets'] = True
|
|
|
|
if filters:
|
|
LOG.debug(_("Searching by: %s") % str(filters))
|
|
|
|
def _check_metadata_match(volume, searchdict):
|
|
volume_metadata = {}
|
|
for i in volume.get('volume_metadata'):
|
|
volume_metadata[i['key']] = i['value']
|
|
|
|
for k, v in searchdict.iteritems():
|
|
if (k not in volume_metadata.keys() or
|
|
volume_metadata[k] != v):
|
|
return False
|
|
return True
|
|
|
|
def _check_migration_target(volume, searchdict):
|
|
if not volume['status'].startswith('migration_target'):
|
|
return True
|
|
return False
|
|
|
|
# search_option to filter_name mapping.
|
|
filter_mapping = {'metadata': _check_metadata_match,
|
|
'no_migration_targets': _check_migration_target}
|
|
|
|
result = []
|
|
not_found = object()
|
|
for volume in volumes:
|
|
# go over all filters in the list
|
|
for opt, values in filters.iteritems():
|
|
try:
|
|
filter_func = filter_mapping[opt]
|
|
except KeyError:
|
|
def filter_func(volume, value):
|
|
return volume.get(opt, not_found) == value
|
|
if not filter_func(volume, values):
|
|
break # volume doesn't match this filter
|
|
else: # did not break out loop
|
|
result.append(volume) # volume matches all filters
|
|
volumes = result
|
|
|
|
return volumes
|
|
|
|
def get_snapshot(self, context, snapshot_id):
|
|
check_policy(context, 'get_snapshot')
|
|
rv = self.db.snapshot_get(context, snapshot_id)
|
|
return dict(rv.iteritems())
|
|
|
|
def get_volume(self, context, volume_id):
|
|
check_policy(context, 'get_volume')
|
|
rv = self.db.volume_get(context, volume_id)
|
|
return dict(rv.iteritems())
|
|
|
|
def get_all_snapshots(self, context, search_opts=None):
|
|
check_policy(context, 'get_all_snapshots')
|
|
|
|
search_opts = search_opts or {}
|
|
|
|
if (context.is_admin and 'all_tenants' in search_opts):
|
|
# Need to remove all_tenants to pass the filtering below.
|
|
del search_opts['all_tenants']
|
|
snapshots = self.db.snapshot_get_all(context)
|
|
else:
|
|
snapshots = self.db.snapshot_get_all_by_project(
|
|
context, context.project_id)
|
|
|
|
if search_opts:
|
|
LOG.debug(_("Searching by: %s") % str(search_opts))
|
|
|
|
results = []
|
|
not_found = object()
|
|
for snapshot in snapshots:
|
|
for opt, value in search_opts.iteritems():
|
|
if snapshot.get(opt, not_found) != value:
|
|
break
|
|
else:
|
|
results.append(snapshot)
|
|
snapshots = results
|
|
return snapshots
|
|
|
|
@wrap_check_policy
|
|
def check_attach(self, context, volume):
|
|
# TODO(vish): abstract status checking?
|
|
if volume['status'] != "available":
|
|
msg = _("status must be available")
|
|
raise exception.InvalidVolume(reason=msg)
|
|
if volume['attach_status'] == "attached":
|
|
msg = _("already attached")
|
|
raise exception.InvalidVolume(reason=msg)
|
|
|
|
@wrap_check_policy
|
|
def check_detach(self, context, volume):
|
|
# TODO(vish): abstract status checking?
|
|
if volume['status'] != "in-use":
|
|
msg = _("status must be in-use to detach")
|
|
raise exception.InvalidVolume(reason=msg)
|
|
|
|
@wrap_check_policy
|
|
def reserve_volume(self, context, volume):
|
|
#NOTE(jdg): check for Race condition bug 1096983
|
|
#explicitly get updated ref and check
|
|
volume = self.db.volume_get(context, volume['id'])
|
|
if volume['status'] == 'available':
|
|
self.update(context, volume, {"status": "attaching"})
|
|
else:
|
|
msg = _("Volume status must be available to reserve")
|
|
LOG.error(msg)
|
|
raise exception.InvalidVolume(reason=msg)
|
|
|
|
@wrap_check_policy
|
|
def unreserve_volume(self, context, volume):
|
|
if volume['status'] == "attaching":
|
|
self.update(context, volume, {"status": "available"})
|
|
|
|
@wrap_check_policy
|
|
def begin_detaching(self, context, volume):
|
|
self.update(context, volume, {"status": "detaching"})
|
|
|
|
@wrap_check_policy
|
|
def roll_detaching(self, context, volume):
|
|
if volume['status'] == "detaching":
|
|
self.update(context, volume, {"status": "in-use"})
|
|
|
|
@wrap_check_policy
|
|
def attach(self, context, volume, instance_uuid, host_name, mountpoint):
|
|
return self.volume_rpcapi.attach_volume(context,
|
|
volume,
|
|
instance_uuid,
|
|
host_name,
|
|
mountpoint)
|
|
|
|
@wrap_check_policy
|
|
def detach(self, context, volume):
|
|
return self.volume_rpcapi.detach_volume(context, volume)
|
|
|
|
@wrap_check_policy
|
|
def initialize_connection(self, context, volume, connector):
|
|
return self.volume_rpcapi.initialize_connection(context,
|
|
volume,
|
|
connector)
|
|
|
|
@wrap_check_policy
|
|
def terminate_connection(self, context, volume, connector, force=False):
|
|
self.unreserve_volume(context, volume)
|
|
return self.volume_rpcapi.terminate_connection(context,
|
|
volume,
|
|
connector,
|
|
force)
|
|
|
|
@wrap_check_policy
|
|
def accept_transfer(self, context, volume):
|
|
return self.volume_rpcapi.accept_transfer(context,
|
|
volume)
|
|
|
|
def _create_snapshot(self, context,
|
|
volume, name, description,
|
|
force=False, metadata=None):
|
|
check_policy(context, 'create_snapshot', volume)
|
|
|
|
if ((not force) and (volume['status'] != "available")):
|
|
msg = _("must be available")
|
|
raise exception.InvalidVolume(reason=msg)
|
|
|
|
try:
|
|
if CONF.no_snapshot_gb_quota:
|
|
reserve_opts = {'snapshots': 1}
|
|
else:
|
|
reserve_opts = {'snapshots': 1, 'gigabytes': volume['size']}
|
|
QUOTAS.add_volume_type_opts(context,
|
|
reserve_opts,
|
|
volume.get('volume_type_id'))
|
|
reservations = QUOTAS.reserve(context, **reserve_opts)
|
|
except exception.OverQuota as e:
|
|
overs = e.kwargs['overs']
|
|
usages = e.kwargs['usages']
|
|
quotas = e.kwargs['quotas']
|
|
|
|
def _consumed(name):
|
|
return (usages[name]['reserved'] + usages[name]['in_use'])
|
|
|
|
for over in overs:
|
|
if 'gigabytes' in over:
|
|
msg = _("Quota exceeded for %(s_pid)s, tried to create "
|
|
"%(s_size)sG snapshot (%(d_consumed)dG of "
|
|
"%(d_quota)dG already consumed)")
|
|
LOG.warn(msg % {'s_pid': context.project_id,
|
|
's_size': volume['size'],
|
|
'd_consumed': _consumed(over),
|
|
'd_quota': quotas[over]})
|
|
raise exception.VolumeSizeExceedsAvailableQuota()
|
|
elif 'snapshots' in over:
|
|
msg = _("Quota exceeded for %(s_pid)s, tried to create "
|
|
"snapshot (%(d_consumed)d snapshots "
|
|
"already consumed)")
|
|
|
|
LOG.warn(msg % {'s_pid': context.project_id,
|
|
'd_consumed': _consumed(over)})
|
|
raise exception.SnapshotLimitExceeded(
|
|
allowed=quotas[over])
|
|
|
|
self._check_metadata_properties(context, metadata)
|
|
options = {'volume_id': volume['id'],
|
|
'user_id': context.user_id,
|
|
'project_id': context.project_id,
|
|
'status': "creating",
|
|
'progress': '0%',
|
|
'volume_size': volume['size'],
|
|
'display_name': name,
|
|
'display_description': description,
|
|
'volume_type_id': volume['volume_type_id'],
|
|
'encryption_key_id': volume['encryption_key_id'],
|
|
'metadata': metadata}
|
|
|
|
try:
|
|
snapshot = self.db.snapshot_create(context, options)
|
|
QUOTAS.commit(context, reservations)
|
|
except Exception:
|
|
with excutils.save_and_reraise_exception():
|
|
try:
|
|
self.db.snapshot_destroy(context, volume['id'])
|
|
finally:
|
|
QUOTAS.rollback(context, reservations)
|
|
|
|
self.volume_rpcapi.create_snapshot(context, volume, snapshot)
|
|
|
|
return snapshot
|
|
|
|
def create_snapshot(self, context,
|
|
volume, name,
|
|
description, metadata=None):
|
|
return self._create_snapshot(context, volume, name, description,
|
|
False, metadata)
|
|
|
|
def create_snapshot_force(self, context,
|
|
volume, name,
|
|
description, metadata=None):
|
|
return self._create_snapshot(context, volume, name, description,
|
|
True, metadata)
|
|
|
|
@wrap_check_policy
|
|
def delete_snapshot(self, context, snapshot, force=False):
|
|
if not force and snapshot['status'] not in ["available", "error"]:
|
|
msg = _("Volume Snapshot status must be available or error")
|
|
raise exception.InvalidSnapshot(reason=msg)
|
|
self.db.snapshot_update(context, snapshot['id'],
|
|
{'status': 'deleting'})
|
|
volume = self.db.volume_get(context, snapshot['volume_id'])
|
|
self.volume_rpcapi.delete_snapshot(context, snapshot, volume['host'])
|
|
|
|
@wrap_check_policy
|
|
def update_snapshot(self, context, snapshot, fields):
|
|
self.db.snapshot_update(context, snapshot['id'], fields)
|
|
|
|
@wrap_check_policy
|
|
def get_volume_metadata(self, context, volume):
|
|
"""Get all metadata associated with a volume."""
|
|
rv = self.db.volume_metadata_get(context, volume['id'])
|
|
return dict(rv.iteritems())
|
|
|
|
@wrap_check_policy
|
|
def delete_volume_metadata(self, context, volume, key):
|
|
"""Delete the given metadata item from a volume."""
|
|
self.db.volume_metadata_delete(context, volume['id'], key)
|
|
|
|
def _check_metadata_properties(self, context, metadata=None):
|
|
if not metadata:
|
|
metadata = {}
|
|
|
|
for k, v in metadata.iteritems():
|
|
if len(k) == 0:
|
|
msg = _("Metadata property key blank")
|
|
LOG.warn(msg)
|
|
raise exception.InvalidVolumeMetadata(reason=msg)
|
|
if len(k) > 255:
|
|
msg = _("Metadata property key greater than 255 characters")
|
|
LOG.warn(msg)
|
|
raise exception.InvalidVolumeMetadataSize(reason=msg)
|
|
if len(v) > 255:
|
|
msg = _("Metadata property value greater than 255 characters")
|
|
LOG.warn(msg)
|
|
raise exception.InvalidVolumeMetadataSize(reason=msg)
|
|
|
|
@wrap_check_policy
|
|
def update_volume_metadata(self, context, volume, metadata, delete=False):
|
|
"""Updates or creates volume metadata.
|
|
|
|
If delete is True, metadata items that are not specified in the
|
|
`metadata` argument will be deleted.
|
|
|
|
"""
|
|
orig_meta = self.get_volume_metadata(context, volume)
|
|
if delete:
|
|
_metadata = metadata
|
|
else:
|
|
_metadata = orig_meta.copy()
|
|
_metadata.update(metadata)
|
|
|
|
self._check_metadata_properties(context, _metadata)
|
|
|
|
self.db.volume_metadata_update(context, volume['id'], _metadata, True)
|
|
|
|
# TODO(jdg): Implement an RPC call for drivers that may use this info
|
|
|
|
return _metadata
|
|
|
|
def get_volume_metadata_value(self, volume, key):
|
|
"""Get value of particular metadata key."""
|
|
metadata = volume.get('volume_metadata')
|
|
if metadata:
|
|
for i in volume['volume_metadata']:
|
|
if i['key'] == key:
|
|
return i['value']
|
|
return None
|
|
|
|
def get_snapshot_metadata(self, context, snapshot):
|
|
"""Get all metadata associated with a snapshot."""
|
|
rv = self.db.snapshot_metadata_get(context, snapshot['id'])
|
|
return dict(rv.iteritems())
|
|
|
|
def delete_snapshot_metadata(self, context, snapshot, key):
|
|
"""Delete the given metadata item from a snapshot."""
|
|
self.db.snapshot_metadata_delete(context, snapshot['id'], key)
|
|
|
|
def update_snapshot_metadata(self, context,
|
|
snapshot, metadata,
|
|
delete=False):
|
|
"""Updates or creates snapshot metadata.
|
|
|
|
If delete is True, metadata items that are not specified in the
|
|
`metadata` argument will be deleted.
|
|
|
|
"""
|
|
orig_meta = self.get_snapshot_metadata(context, snapshot)
|
|
if delete:
|
|
_metadata = metadata
|
|
else:
|
|
_metadata = orig_meta.copy()
|
|
_metadata.update(metadata)
|
|
|
|
self._check_metadata_properties(context, _metadata)
|
|
|
|
self.db.snapshot_metadata_update(context,
|
|
snapshot['id'],
|
|
_metadata,
|
|
True)
|
|
|
|
# TODO(jdg): Implement an RPC call for drivers that may use this info
|
|
|
|
return _metadata
|
|
|
|
def get_snapshot_metadata_value(self, snapshot, key):
|
|
pass
|
|
|
|
@wrap_check_policy
|
|
def get_volume_image_metadata(self, context, volume):
|
|
db_data = self.db.volume_glance_metadata_get(context, volume['id'])
|
|
return dict(
|
|
(meta_entry.key, meta_entry.value) for meta_entry in db_data
|
|
)
|
|
|
|
def _check_volume_availability(self, context, volume, force):
|
|
"""Check if the volume can be used."""
|
|
if volume['status'] not in ['available', 'in-use']:
|
|
msg = _('Volume status must be available/in-use.')
|
|
raise exception.InvalidVolume(reason=msg)
|
|
if not force and 'in-use' == volume['status']:
|
|
msg = _('Volume status is in-use.')
|
|
raise exception.InvalidVolume(reason=msg)
|
|
|
|
@wrap_check_policy
|
|
def copy_volume_to_image(self, context, volume, metadata, force):
|
|
"""Create a new image from the specified volume."""
|
|
self._check_volume_availability(context, volume, force)
|
|
|
|
recv_metadata = self.image_service.create(context, metadata)
|
|
self.update(context, volume, {'status': 'uploading'})
|
|
self.volume_rpcapi.copy_volume_to_image(context,
|
|
volume,
|
|
recv_metadata)
|
|
|
|
response = {"id": volume['id'],
|
|
"updated_at": volume['updated_at'],
|
|
"status": 'uploading',
|
|
"display_description": volume['display_description'],
|
|
"size": volume['size'],
|
|
"volume_type": volume['volume_type'],
|
|
"image_id": recv_metadata['id'],
|
|
"container_format": recv_metadata['container_format'],
|
|
"disk_format": recv_metadata['disk_format'],
|
|
"image_name": recv_metadata.get('name', None)}
|
|
return response
|
|
|
|
@wrap_check_policy
|
|
def extend(self, context, volume, new_size):
|
|
if volume['status'] != 'available':
|
|
msg = _('Volume status must be available to extend.')
|
|
raise exception.InvalidVolume(reason=msg)
|
|
|
|
size_increase = (int(new_size)) - volume['size']
|
|
if size_increase <= 0:
|
|
msg = (_("New size for extend must be greater "
|
|
"than current size. (current: %(size)s, "
|
|
"extended: %(new_size)s)") % {'new_size': new_size,
|
|
'size': volume['size']})
|
|
raise exception.InvalidInput(reason=msg)
|
|
|
|
self.update(context, volume, {'status': 'extending'})
|
|
self.volume_rpcapi.extend_volume(context, volume, new_size)
|
|
|
|
def migrate_volume(self, context, volume, host, force_host_copy):
|
|
"""Migrate the volume to the specified host."""
|
|
|
|
# We only handle "available" volumes for now
|
|
if volume['status'] != "available":
|
|
msg = _("status must be available")
|
|
LOG.error(msg)
|
|
raise exception.InvalidVolume(reason=msg)
|
|
|
|
# We only handle volumes without snapshots for now
|
|
snaps = self.db.snapshot_get_all_for_volume(context, volume['id'])
|
|
if snaps:
|
|
msg = _("volume must not have snapshots")
|
|
LOG.error(msg)
|
|
raise exception.InvalidVolume(reason=msg)
|
|
|
|
# Make sure the host is in the list of available hosts
|
|
elevated = context.elevated()
|
|
topic = CONF.volume_topic
|
|
services = self.db.service_get_all_by_topic(elevated, topic)
|
|
found = False
|
|
for service in services:
|
|
if utils.service_is_up(service) and service['host'] == host:
|
|
found = True
|
|
if not found:
|
|
msg = (_('No available service named %s') % host)
|
|
LOG.error(msg)
|
|
raise exception.InvalidHost(reason=msg)
|
|
|
|
# Make sure the destination host is different than the current one
|
|
if host == volume['host']:
|
|
msg = _('Destination host must be different than current host')
|
|
LOG.error(msg)
|
|
raise exception.InvalidHost(reason=msg)
|
|
|
|
self.update(context, volume, {'status': 'migrating'})
|
|
|
|
# Call the scheduler to ensure that the host exists and that it can
|
|
# accept the volume
|
|
volume_type = {}
|
|
if volume['volume_type_id']:
|
|
volume_types.get_volume_type(context, volume['volume_type_id'])
|
|
request_spec = {'volume_properties': volume,
|
|
'volume_type': volume_type,
|
|
'volume_id': volume['id']}
|
|
self.scheduler_rpcapi.migrate_volume_to_host(context,
|
|
CONF.volume_topic,
|
|
volume['id'],
|
|
host,
|
|
force_host_copy,
|
|
request_spec)
|
|
|
|
|
|
class HostAPI(base.Base):
|
|
def __init__(self):
|
|
super(HostAPI, self).__init__()
|
|
|
|
"""Sub-set of the Volume Manager API for managing host operations."""
|
|
def set_host_enabled(self, context, host, enabled):
|
|
"""Sets the specified host's ability to accept new volumes."""
|
|
raise NotImplementedError()
|
|
|
|
def get_host_uptime(self, context, host):
|
|
"""Returns the result of calling "uptime" on the target host."""
|
|
raise NotImplementedError()
|
|
|
|
def host_power_action(self, context, host, action):
|
|
raise NotImplementedError()
|
|
|
|
def set_host_maintenance(self, context, host, mode):
|
|
"""Start/Stop host maintenance window. On start, it triggers
|
|
volume evacuation.
|
|
"""
|
|
raise NotImplementedError()
|