ZPOOL_CONFIG_COMMENT
if (nvlist_lookup_string(config, ZPOOL_CONFIG_COMMENT, &comment) == 0)
ZPOOL_CONFIG_COMMENT, &comment) == 0)
ZPOOL_CONFIG_COMMENT, comment);
if (nvlist_lookup_string(config, ZPOOL_CONFIG_COMMENT, &comment) == 0)
fnvlist_add_string(config, ZPOOL_CONFIG_COMMENT,