NFSIOD_NOT_AVAILABLE
ncl_iodwant[iod] = NFSIOD_NOT_AVAILABLE;
if (ncl_iodwant[myiod] == NFSIOD_NOT_AVAILABLE)
ncl_iodwant[myiod] = NFSIOD_NOT_AVAILABLE;
ncl_iodwant[i] = NFSIOD_NOT_AVAILABLE;