No discriminación

Error en la base de datos de WordPress: [Can't create/write to file '/tmp/#sql_84a_0.MYI' (Errcode: 28 - No space left on device)]
SELECT wp_posts.* FROM wp_posts LEFT JOIN wp_term_relationships ON (wp_posts.ID = wp_term_relationships.object_id) WHERE 1=1 AND ( wp_term_relationships.term_taxonomy_id IN (80) ) AND wp_posts.post_type = 'nav_menu_item' AND ((wp_posts.post_status = 'publish')) GROUP BY wp_posts.ID ORDER BY wp_posts.menu_order ASC