code: def update(self, validate=False):
          
          # Check the resultset since Eucalyptus ignores the volumeId param
          unfiltered_rs = self.connection.get_all_volumes([self.id])
          rs = [ x for x in unfiltered_rs if x.id == self.id ]
          if len(rs) > 0:
              self._update(rs[0])
          elif validate:
              raise ValueError('%s is not a valid Volume ID' % self.id)
          return self.status
docs: Update the data associated with this volume by querying EC2.
  
          :type validate: bool
          :param validate: By default, if EC2 returns no data about the
                           volume the update method returns quietly.  If
                           the validate param is True, however, it will
                           raise a ValueError exception if no data is
                           returned from EC2.