Error 1021:
Disk full (/tmp/#sql_2de_0.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")

On query:
SELECT SQL_CALC_FOUND_ROWS a.*, ib.role_name FROM actors a, id_base ib WHERE ib.id_actors = a.id AND ib.id_serials=61 ORDER BY rating DESC LIMIT 0, 8