We are having intermittent issues where certain file submissions are not being read by Moodle. For example, as we can see from here , the student has indeed uploaded the file to Moodle and we can confirm this by looking at the logs for that user.
I can also confirm that the file entry exists in the moodle database under mdl_files table with the pathnamehash and contenthash but I cannot seem to find the file stored under the moodlefilestore dir. We are using NFS where the filedir/ sits and we are not able to locate the file under filedir/contenthash path ( xx/xx/........ ) .
Would anyone know as to why this seems to be an issue ONLY with certain files and not every file uploaded to Moodle.
using moodle 2.8.11