MySQL Fatal Error

MySQL Error!
------------------------

The Error returned was:
Can't create/write to file '/tmp/#sql_54e4_0.MYI' (Errcode: 28)

Error Number:
1

SELECT id, title, date, category, alt_name, short_story, flag FROM el_post WHERE MATCH (title, short_story, full_story, xfields) AGAINST ('Dirty Vegas - Electric Love - WEB - Bonus Track |   Artist  : Dirty Vegas                                                    ||   Album   : Electric Love                                                  ||   Bitrate : 256 kbps                                                       |+-------------------------------[Release Info]-------------------------------+|   Source     : WEB                                                         ||   Label      :                                                             ||   Year       : 2011                                                        ||   Genre      : Electronic                                                  ||   URL        : http://www.amazon.com/gp/product/B004XN9OFC/                                                   ||   Rip date   : 2011-05-28                                                  ||   Store date : 2011-00-00                                                  ||   Rip tool   :                                                             ||   Encoder    :                                                             ||   Size       : 11.46 megs                                                  |Download+--------------------------------[Track List]--------------------------------+|  1.  Changes (In Flagranti Remix)                                   5:54   ||                                                                    05:54   |+-------------------------------[Release Notes]------------------------------+') AND id != 35072 AND approve='1' AND date < '2013-05-18 13:33:05'ORDER BY RAND() LIMIT 5