1 - Can't create/write to file '/tmp/#sql_e17_0.MYI' (Errcode: 30)

select r.reviews_rating, r.reviews_id, r.customers_name, r.date_added, r.last_modified, r.reviews_read, rd.reviews_text from reviews r, reviews_description rd where r.products_id = '100' and r.reviews_id=rd.reviews_id and rd.languages_id = '1' order by reviews_id DESC

[XT SQL Error]