A fatal MySQL error occurred.

Query:
SELECT SQL_CALC_FOUND_ROWS l.* FROM pmd_listings l INNER JOIN pmd_listings_categories lc ON l.id=lc.list_id WHERE lc.cat_id=6090 AND l.status='active' ORDER BY priority DESC LIMIT 0,10

Error:
(1021) Disk full (/tmp/#sql_df4b9_138.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")