def check_detach(self, context, volume, instance=None):
if volume['status'] == "available":
msg = "already detached"
raise exception.InvalidVolume(reason=msg)
if volume['attach_status'] == 'detached':
msg = "Volume must be attached in order to detach."
raise exception.InvalidVolume(reason=msg)
if instance and not volume.get('attachments', {}).get(instance.uuid):
raise exception.VolumeUnattached(volume_id=volume['id'])
def check_detach(self, context, volume, instance=None):
# TODO(vish): abstract status checking?
if volume['status'] == "available":
msg = _("volume %s already detached") % volume['id']
raise exception.InvalidVolume(reason=msg)
if volume['attach_status'] == 'detached':
msg = _("Volume must be attached in order to detach.")
raise exception.InvalidVolume(reason=msg)
# NOTE(ildikov):Preparation for multiattach support, when a volume
# can be attached to multiple hosts and/or instances,
# so just check the attachment specific to this instance
if instance is not None and instance.uuid not in volume['attachments']:
# TODO(ildikov): change it to a better exception, when enable
# multi-attach.
raise exception.VolumeUnattached(volume_id=volume['id'])
def fake_swap_volume_unattached_volume(self, context, instance, volume_id,
device):
raise exception.VolumeUnattached(reason='', volume_id=volume_id)
