We are downloading files via the download archive function on the summary page. After some downloads we get out of disk space on /tmp. We found that the zip archive prepared in /tmp is deleted but obviously not released after the download has been completed. This can be seen by using 'lsof | grep /tmp'. If the server is freshly startet, no entry can be seen. After each download one open file in the size of the zip archive marked as deleted is added to the list. As far as we can see, the entries only vanish performing a server restart.
Issue #448 resolved