Hi,

I have a concern about the old draft files. I understand from reading the docs and forum posts that the cron should be deleting drafts older than 4 days. Now, we have been looking into the files space usage and found out that we have a bunch of draft files older than 4 days (some going back to 2012) stuck into mdl_files and actually existing on the server in moodledata/filedir. These files can't be seen from Moodle GUI and so, cannot be deleted by users. They weight around 450Mb, which is not much, but I don't like the idea of unused files stacking up in my back.

For example, this video.flv file from mdl_files created on 2013-09-24:

In the file_storage->cron (/filestorage/file_storage.php), the query didn't retrieve it because of the filename = '.' clause:

$sql = "SELECT *

                  FROM {files}

                 WHERE component = 'user' AND filearea = 'draft' AND filepath = '/' AND filename = '.'

                       AND timecreated < :old";

Is something wrong in the cron?