MySQL Error!

The Error returned was:
Can't create/write to file '/tmpfs/#sql_314_0.MYI' (Errcode: 28)

Error Number:

Warning: Unknown: open(/var/www/games4lady/data/mod-tmp/sess_8b1a8dba85491bdb1a95c436356ea722, O_RDWR) failed: На устройстве кончилось место (28) in Unknown on line 0 Warning: Unknown: Failed to write session data (files). Please verify that the current setting of session.save_path is correct (/var/www/games4lady/data/mod-tmp) in Unknown on line 0