longcpy
longcpy(bkey(geo, node, n), key, geo->keylen);
longcpy(key, bkey(geo, node, 0), geo->keylen);
longcpy(key, __key, geo->keylen);
longcpy(__key, bkey(geo, node, i), geo->keylen);
longcpy(key, retry_key, geo->keylen);
longcpy(dup, key, geo->keylen);