title: systemd user journals not being created
body: <p>Several identical machines all running Fedora 21 in a cluster are all exhibiting identical issues:</p>
  <p>Attempting to pull a user journal with journalctl -r gives:</p>
  <pre><code>No journal files were opened due to insufficient permissions.
  </code></pre>
  <p>Trying journalctl --user -r gives:</p>
  <pre><code>No journal files were found.
  </code></pre>
  <p>Checking in /var/log/journal/[whatever] yields system journals (which seem to work fine as root) and one or two user journals.  Logging in as a user that has a user journal in this directory shows that these users can pull their own journal just fine.</p>
  <p>It seems like journals are being created for some users but not others.  I can find nothing different about the users with journals, and it's not the same users exhibiting the problem on every system, despite identical /etc/passwd, /etc/group, and /etc/shadow files across the systems.</p>
  <p>All of this worked fine on Fedora 20.</p>