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
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
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."""
context_saved = context.deepcopy()
context = context.elevated()
if filter_properties is None:
filter_properties = {}
try:
flow_engine = create_volume.get_manager_flow(
context,
self.db,
self.driver,
self.scheduler_rpcapi,
self.host,
volume_id,
snapshot_id=snapshot_id,
image_id=image_id,
source_volid=source_volid,
allow_reschedule=allow_reschedule,
reschedule_context=context_saved,
request_spec=request_spec,
filter_properties=filter_properties)
except Exception:
LOG.exception(_("Failed to create manager volume flow"))
raise exception.CinderException(
_("Failed to create manager volume flow"))
if snapshot_id is not None:
# Make sure the snapshot is not deleted until we are done with it.
locked_action = "%s-%s" % (snapshot_id, 'delete_snapshot')
elif source_volid is not None:
# Make sure the volume is not deleted until we are done with it.
locked_action = "%s-%s" % (source_volid, 'delete_volume')
else:
locked_action = None
def _run_flow():
# This code executes create volume flow. If something goes wrong,
# flow reverts all job that was done and reraises an exception.
# Otherwise, all data that was generated by flow becomes available
# in flow engine's storage.
flow_engine.run()
@utils.synchronized(locked_action, external=True)
def _run_flow_locked():
_run_flow()
if locked_action is None:
_run_flow()
else:
_run_flow_locked()
# Fetch created volume from storage
volume_ref = flow_engine.storage.fetch('volume')
# Update volume stats
self.stats['allocated_capacity_gb'] += volume_ref['size']
return volume_ref['id']
def get(self, context, volume_id, viewable_admin_meta=False):
old_ctxt = context.deepcopy()
if viewable_admin_meta:
ctxt = context.elevated()
else:
ctxt = context
rv = self.db.volume_get(ctxt, volume_id)
volume = dict(rv.iteritems())
try:
check_policy(old_ctxt, 'get', volume)
except exception.PolicyNotAuthorized:
# raise VolumeNotFound instead to make sure Cinder behaves
# as it used to
raise exception.VolumeNotFound(volume_id=volume_id)
return volume
def get(self, context, volume_id, viewable_admin_meta=False):
old_ctxt = context.deepcopy()
if viewable_admin_meta:
ctxt = context.elevated()
else:
ctxt = context
rv = self.db.volume_get(ctxt, volume_id)
volume = dict(rv.iteritems())
try:
check_policy(old_ctxt, 'get', volume)
except exception.PolicyNotAuthorized:
# raise VolumeNotFound instead to make sure Cinder behaves
# as it used to
raise exception.VolumeNotFound(volume_id=volume_id)
return volume
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."""
context_saved = context.deepcopy()
context = context.elevated()
if filter_properties is None:
filter_properties = {}
volume_ref = self.db.volume_get(context, volume_id)
self._notify_about_volume_usage(context, volume_ref, "create.start")
# NOTE(vish): so we don't have to get volume from db again
# before passing it to the driver.
volume_ref['host'] = self.host
if volume_ref['status'] == 'migration_target_creating':
status = 'migration_target'
else:
status = 'available'
model_update = False
image_meta = None
cloned = False
try:
LOG.debug(
_("volume %(vol_name)s: creating lv of"
" size %(vol_size)sG"), {
'vol_name': volume_ref['name'],
'vol_size': volume_ref['size']
})
snapshot_ref = None
sourcevol_ref = None
image_service = None
image_location = None
image_meta = None
if snapshot_id is not None:
LOG.info(_("volume %s: creating from snapshot"),
volume_ref['name'])
snapshot_ref = self.db.snapshot_get(context, snapshot_id)
elif source_volid is not None:
LOG.info(_("volume %s: creating from existing volume"),
volume_ref['name'])
sourcevol_ref = self.db.volume_get(context, source_volid)
elif image_id is not None:
LOG.info(_("volume %s: creating from image"),
volume_ref['name'])
# create the volume from an image
image_service, image_id = \
glance.get_remote_image_service(context,
image_id)
image_location = image_service.get_location(context, image_id)
image_meta = image_service.show(context, image_id)
else:
LOG.info(_("volume %s: creating"), volume_ref['name'])
try:
model_update, cloned = self._create_volume(
context, volume_ref, snapshot_ref, sourcevol_ref,
image_service, image_id, image_location)
except exception.ImageCopyFailure as ex:
LOG.error(
_('Setting volume: %s status to error '
'after failed image copy.'), volume_ref['id'])
self.db.volume_update(context, volume_ref['id'],
{'status': 'error'})
return
except Exception:
exc_info = sys.exc_info()
# restore source volume status before reschedule
# FIXME(zhiteng) do all the clean-up before reschedule
if sourcevol_ref is not None:
self.db.volume_update(context, sourcevol_ref['id'],
{'status': sourcevol_ref['status']})
rescheduled = False
# try to re-schedule volume:
if allow_reschedule:
rescheduled = self._reschedule_or_error(
context_saved, volume_id, exc_info, snapshot_id,
image_id, request_spec, filter_properties)
if rescheduled:
LOG.error(_('Unexpected Error: '), exc_info=exc_info)
msg = (_('Creating %(volume_id)s %(snapshot_id)s '
'%(image_id)s was rescheduled due to '
'%(reason)s') % {
'volume_id': volume_id,
'snapshot_id': snapshot_id,
'image_id': image_id,
'reason': unicode(exc_info[1])
})
raise exception.CinderException(msg)
else:
# not re-scheduling
raise exc_info[0], exc_info[1], exc_info[2]
if model_update:
volume_ref = self.db.volume_update(context, volume_ref['id'],
model_update)
if sourcevol_ref is not None:
self.db.volume_glance_metadata_copy_from_volume_to_volume(
context, source_volid, volume_id)
LOG.debug(_("volume %s: creating export"), volume_ref['name'])
model_update = self.driver.create_export(context, volume_ref)
if model_update:
self.db.volume_update(context, volume_ref['id'], model_update)
except Exception:
with excutils.save_and_reraise_exception():
volume_ref['status'] = 'error'
self.db.volume_update(context, volume_ref['id'],
{'status': volume_ref['status']})
LOG.error(_("volume %s: create failed"), volume_ref['name'])
self._notify_about_volume_usage(context, volume_ref,
"create.end")
if snapshot_id:
# Copy any Glance metadata from the original volume
self.db.volume_glance_metadata_copy_to_volume(
context, volume_ref['id'], snapshot_id)
if image_id and image_meta:
# Copy all of the Glance image properties to the
# volume_glance_metadata table for future reference.
self.db.volume_glance_metadata_create(context, volume_ref['id'],
'image_id', image_id)
name = image_meta.get('name', None)
if name:
self.db.volume_glance_metadata_create(context,
volume_ref['id'],
'image_name', name)
# Save some more attributes into the volume metadata
IMAGE_ATTRIBUTES = [
'size', 'disk_format', 'container_format', 'checksum',
'min_disk', 'min_ram'
]
for key in IMAGE_ATTRIBUTES:
value = image_meta.get(key, None)
if value is not None:
self.db.volume_glance_metadata_create(
context, volume_ref['id'], key, value)
image_properties = image_meta.get('properties', {})
for key, value in image_properties.items():
self.db.volume_glance_metadata_create(context,
volume_ref['id'], key,
value)
now = timeutils.utcnow()
volume_ref['status'] = status
self.db.volume_update(context, volume_ref['id'], {
'status': volume_ref['status'],
'launched_at': now
})
LOG.info(_("volume %s: created successfully"), volume_ref['name'])
self._reset_stats()
self._notify_about_volume_usage(context, volume_ref, "create.end")
return volume_ref['id']
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."""
context_saved = context.deepcopy()
context = context.elevated()
if filter_properties is None:
filter_properties = {}
volume_ref = self.db.volume_get(context, volume_id)
self._notify_about_volume_usage(context, volume_ref, "create.start")
# NOTE(vish): so we don't have to get volume from db again
# before passing it to the driver.
volume_ref['host'] = self.host
if volume_ref['status'] == 'migration_target_creating':
status = 'migration_target'
else:
status = 'available'
model_update = False
image_meta = None
cloned = False
try:
LOG.debug(_("volume %(vol_name)s: creating lv of"
" size %(vol_size)sG"),
{'vol_name': volume_ref['name'],
'vol_size': volume_ref['size']})
snapshot_ref = None
sourcevol_ref = None
image_service = None
image_location = None
image_meta = None
if snapshot_id is not None:
LOG.info(_("volume %s: creating from snapshot"),
volume_ref['name'])
snapshot_ref = self.db.snapshot_get(context, snapshot_id)
elif source_volid is not None:
LOG.info(_("volume %s: creating from existing volume"),
volume_ref['name'])
sourcevol_ref = self.db.volume_get(context, source_volid)
elif image_id is not None:
LOG.info(_("volume %s: creating from image"),
volume_ref['name'])
# create the volume from an image
image_service, image_id = \
glance.get_remote_image_service(context,
image_id)
image_location = image_service.get_location(context, image_id)
image_meta = image_service.show(context, image_id)
else:
LOG.info(_("volume %s: creating"), volume_ref['name'])
try:
model_update, cloned = self._create_volume(context,
volume_ref,
snapshot_ref,
sourcevol_ref,
image_service,
image_id,
image_location)
except exception.ImageCopyFailure as ex:
LOG.error(_('Setting volume: %s status to error '
'after failed image copy.'), volume_ref['id'])
self.db.volume_update(context,
volume_ref['id'],
{'status': 'error'})
return
except Exception:
exc_info = sys.exc_info()
# restore source volume status before reschedule
# FIXME(zhiteng) do all the clean-up before reschedule
if sourcevol_ref is not None:
self.db.volume_update(context, sourcevol_ref['id'],
{'status': sourcevol_ref['status']})
rescheduled = False
# try to re-schedule volume:
if allow_reschedule:
rescheduled = self._reschedule_or_error(context_saved,
volume_id,
exc_info,
snapshot_id,
image_id,
request_spec,
filter_properties)
if rescheduled:
# log the original build error
self._log_original_error(exc_info)
msg = (_('Creating %(volume_id)s %(snapshot_id)s '
'%(image_id)s was rescheduled due to '
'%(reason)s')
% {'volume_id': volume_id,
'snapshot_id': snapshot_id,
'image_id': image_id,
'reason': unicode(exc_info[1])})
raise exception.CinderException(msg)
else:
# not re-scheduling
raise exc_info[0], exc_info[1], exc_info[2]
if model_update:
volume_ref = self.db.volume_update(
context, volume_ref['id'], model_update)
if sourcevol_ref is not None:
self.db.volume_glance_metadata_copy_from_volume_to_volume(
context,
source_volid,
volume_id)
LOG.debug(_("volume %s: creating export"), volume_ref['name'])
model_update = self.driver.create_export(context, volume_ref)
if model_update:
self.db.volume_update(context, volume_ref['id'], model_update)
except Exception:
with excutils.save_and_reraise_exception():
volume_ref['status'] = 'error'
self.db.volume_update(context,
volume_ref['id'],
{'status': volume_ref['status']})
LOG.error(_("volume %s: create failed"), volume_ref['name'])
self._notify_about_volume_usage(context, volume_ref,
"create.end")
if snapshot_id:
# Copy any Glance metadata from the original volume
self.db.volume_glance_metadata_copy_to_volume(context,
volume_ref['id'],
snapshot_id)
if image_id and image_meta:
# Copy all of the Glance image properties to the
# volume_glance_metadata table for future reference.
self.db.volume_glance_metadata_create(context,
volume_ref['id'],
'image_id', image_id)
name = image_meta.get('name', None)
if name:
self.db.volume_glance_metadata_create(context,
volume_ref['id'],
'image_name', name)
# Save some more attributes into the volume metadata
IMAGE_ATTRIBUTES = ['size', 'disk_format',
'container_format', 'checksum',
'min_disk', 'min_ram']
for key in IMAGE_ATTRIBUTES:
value = image_meta.get(key, None)
if value is not None:
self.db.volume_glance_metadata_create(context,
volume_ref['id'],
key, value)
image_properties = image_meta.get('properties', {})
for key, value in image_properties.items():
self.db.volume_glance_metadata_create(context,
volume_ref['id'],
key, value)
now = timeutils.utcnow()
volume_ref['status'] = status
self.db.volume_update(context,
volume_ref['id'],
{'status': volume_ref['status'],
'launched_at': now})
LOG.info(_("volume %s: created successfully"), volume_ref['name'])
self._reset_stats()
self._notify_about_volume_usage(context, volume_ref, "create.end")
return volume_ref['id']
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."""
context_saved = context.deepcopy()
context = context.elevated()
if filter_properties is None:
filter_properties = {}
try:
flow_engine = create_volume.get_manager_flow(
context,
self.db,
self.driver,
self.scheduler_rpcapi,
self.host,
volume_id,
snapshot_id=snapshot_id,
image_id=image_id,
source_volid=source_volid,
allow_reschedule=allow_reschedule,
reschedule_context=context_saved,
request_spec=request_spec,
filter_properties=filter_properties)
except Exception:
LOG.exception(_("Failed to create manager volume flow"))
raise exception.CinderException(
_("Failed to create manager volume flow"))
if snapshot_id is not None:
# Make sure the snapshot is not deleted until we are done with it.
locked_action = "%s-%s" % (snapshot_id, 'delete_snapshot')
elif source_volid is not None:
# Make sure the volume is not deleted until we are done with it.
locked_action = "%s-%s" % (source_volid, 'delete_volume')
else:
locked_action = None
def _run_flow():
# This code executes create volume flow. If something goes wrong,
# flow reverts all job that was done and reraises an exception.
# Otherwise, all data that was generated by flow becomes available
# in flow engine's storage.
flow_engine.run()
@utils.synchronized(locked_action, external=True)
def _run_flow_locked():
_run_flow()
if locked_action is None:
_run_flow()
else:
_run_flow_locked()
# Fetch created volume from storage
volume_ref = flow_engine.storage.fetch('volume')
return volume_ref['id']
