ZPOOL_HIST_HOST
if (nvlist_exists(rec, ZPOOL_HIST_HOST)) {
fnvlist_lookup_string(rec, ZPOOL_HIST_HOST));
if (nvlist_lookup_string(nvl, ZPOOL_HIST_HOST, &string) == 0)
fnvlist_add_string(nvl, ZPOOL_HIST_HOST, utsname.nodename);