def update(self, validate=False):
        """
        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.
        """
        # 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
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.