Disc quota exceeded - ./data/cache/latest.rb (Errno::EDQUOT)

./tdiary.rb:961:in `write'
./tdiary.rb:961:in `store_cache'
./tdiary.rb:959:in `store_cache'
./tdiary.rb:899:in `do_eval_rhtml'
./tdiary.rb:853:in `eval_rhtml'
index.rb:71