'Verify that the zfs volumes exist.
:raise: :py:exc:`LookupError`'

def check_for_setup_error(self):

    url = ('storage/pools/%(pool)s/volumeGroups/%(group)s' % {'pool': self.storage_pool, 'group': self.volume_group})
    try:
        self.nef.get(url)
    except exception.NexentaException:
        raise LookupError(_('Dataset    group    %s    not    found    at    Nexenta    SA'), '/'.join([self.storage_pool, self.volume_group]))
    services = self.nef.get('services')
    for service in services['data']:
        if (service['name'] == 'iscsit'):
            if (service['state'] != 'online'):
                raise exception.NexentaException('iSCSI    service    is    not    running    on    NS    appliance')
            break
