def _handle_bootable_volume_glance_meta(self, context, volume_id,
**kwargs):
"""Enable bootable flag and properly handle glance metadata.
Caller should provide one and only one of snapshot_id,source_volid
and image_id. If an image_id specified, a image_meta should also be
provided, otherwise will be treated as an empty dictionary.
"""
log_template = _("Copying metadata from %(src_type)s %(src_id)s to "
"%(vol_id)s.")
exception_template = _("Failed updating volume %(vol_id)s metadata"
" using the provided %(src_type)s"
" %(src_id)s metadata")
src_type = None
src_id = None
self._enable_bootable_flag(context, volume_id)
try:
if kwargs.get('snapshot_id'):
src_type = 'snapshot'
src_id = kwargs['snapshot_id']
snapshot_id = src_id
LOG.debug(log_template % {
'src_type': src_type,
'src_id': src_id,
'vol_id': volume_id
})
self.db.volume_glance_metadata_copy_to_volume(
context, volume_id, snapshot_id)
elif kwargs.get('source_volid'):
src_type = 'source volume'
src_id = kwargs['source_volid']
source_volid = src_id
LOG.debug(log_template % {
'src_type': src_type,
'src_id': src_id,
'vol_id': volume_id
})
self.db.volume_glance_metadata_copy_from_volume_to_volume(
context, source_volid, volume_id)
elif kwargs.get('image_id'):
src_type = 'image'
src_id = kwargs['image_id']
image_id = src_id
image_meta = kwargs.get('image_meta', {})
LOG.debug(log_template % {
'src_type': src_type,
'src_id': src_id,
'vol_id': volume_id
})
self._capture_volume_image_metadata(context, volume_id,
image_id, image_meta)
except exception.CinderException as ex:
LOG.exception(exception_template % {
'src_type': src_type,
'src_id': src_id,
'vol_id': volume_id
})
raise exception.MetadataCopyFailure(reason=ex)
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
def test_create_snapshot_from_bootable_volume_fail(self, mock_qemu_info):
"""Test create snapshot from bootable volume.
But it fails to volume_glance_metadata_copy_to_snapshot.
As a result, status of snapshot is changed to ERROR.
"""
# create bootable volume from image
volume = self._create_volume_from_image()
volume_id = volume['id']
self.assertEqual('available', volume['status'])
self.assertTrue(volume['bootable'])
image_info = imageutils.QemuImgInfo()
image_info.virtual_size = '1073741824'
mock_qemu_info.return_value = image_info
# get volume's volume_glance_metadata
ctxt = context.get_admin_context()
vol_glance_meta = db.volume_glance_metadata_get(ctxt, volume_id)
self.assertTrue(vol_glance_meta)
snap = create_snapshot(volume_id)
snap_stat = snap.status
self.assertTrue(snap.id)
self.assertTrue(snap_stat)
# set to return DB exception
with mock.patch.object(db, 'volume_glance_metadata_copy_to_snapshot')\
as mock_db:
mock_db.side_effect = exception.MetadataCopyFailure(
reason="Because of DB service down.")
# create snapshot from bootable volume
self.assertRaises(exception.MetadataCopyFailure,
self.volume.create_snapshot,
ctxt,
snap)
# get snapshot's volume_glance_metadata
self.assertRaises(exception.GlanceMetadataNotFound,
db.volume_snapshot_glance_metadata_get,
ctxt, snap.id)
# ensure that status of snapshot is 'error'
self.assertEqual(fields.SnapshotStatus.ERROR, snap.status)
# cleanup resource
snap.destroy()
db.volume_destroy(ctxt, volume_id)
def create_volume(self, volume):
'''
Create volume
'''
LOG.info(_('create_volume,Enter method'))
element_path = None
metadata = None
v_metadata = None
d_metadata = {}
data = None
v_metadata = volume.get('volume_metadata')
for data in v_metadata:
d_metadata[data['key']] = data['value']
if FJ_SRC_VOL_ID not in d_metadata:
# create volume
(element_path, metadata) = self.common.create_volume(volume)
else:
# create cloned volume for backup solution
# get source & target volume information
ctxt = context.get_admin_context()
volume_id = volume['id']
volume_size = volume['size']
src_volid = d_metadata[FJ_SRC_VOL_ID]
if src_volid is None:
msg = (_('create_volume,Source volume id is None'))
LOG.error(msg)
raise exception.VolumeBackendAPIException(data=msg)
# end of if
src_vref = self.db.volume_get(ctxt, src_volid)
# check target volume information with reference to source volume
src_vref_size = src_vref['size']
src_vref_status = src_vref['status']
if ('error' in src_vref_status) or ('deleting' in src_vref_status):
msg = (_('Invalid volume status : %(status)s') % {
'status': src_vref_status
})
LOG.error(msg)
raise exception.VolumeBackendAPIException(data=msg)
elif volume_size < src_vref_size:
msg = (_(
'Volume size %(volume_size)sGB cannot be smaller than original volume size %(src_vref_size)sGB. They must be >= original volume size.'
) % {
'volume_size': volume_size,
'src_vref_size': src_vref_size
})
LOG.error(msg)
raise exception.VolumeBackendAPIException(data=msg)
# end of if
# main processing
LOG.info(_('create_volume,Call create cloned volume'))
(element_path, metadata) = self.common.create_cloned_volume(
volume, src_vref, use_service_name=True)
LOG.info(_('create_volume,Return create cloned volume'))
# post processing
try:
if src_vref.bootable:
self.db.volume_update(ctxt, volume['id'],
{'bootable': True})
self.db.volume_glance_metadata_copy_from_volume_to_volume(
ctxt, src_volid, volume['id'])
# end of if
self.db.volume_update(ctxt, volume['id'],
{'source_volid': src_volid})
except Exception as ex:
msg = (_('create volume, Failed updating volume metadata,'
'reason: %(reason)s,'
'volume_id: %(volume_id)s,'
'src_volid: %(src_volid)s,') % {
'reason': ex,
'volume_id': volume['id'],
'src_volid': src_volid
})
raise exception.MetadataCopyFailure(reason=msg)
# end of if
d_metadata.update(metadata)
LOG.info(_('create_volume,Exit method'))
return {
'provider_location': six.text_type(element_path),
'metadata': d_metadata
}
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'])
vol_ref = self.db.volume_get(context, volume_id)
volume_type_id = vol_ref.get('volume_type_id', None)
if self._is_share_volume(volume_type_id):
msg = _("Volume is share volume")
self.db.snapshot_update(context,
snapshot_ref['id'],
{'status': 'error'})
raise exception.InvalidVolume(reason=msg)
self._notify_about_snapshot_usage(
context, snapshot_ref, "create.start")
try:
# NOTE(flaper87): Verify the driver is enabled
# before going forward. The exception will be caught
# and the snapshot status updated.
utils.require_driver_initialized(self.driver)
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%'})
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
