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@@ -134,7 +134,8 @@ is ready. Exit 1 if it is still not ready after 5 seconds.
<p>
Send a SIGTERM to the ftpd server; wait for
<a href="s6-supervise.html">s6-supervise</a> to restart it, and block
-until it has notified that it is ready to serve again.
+until it has notified that it is ready to serve again. See the NOTES
+section below for a caveat.
</p>
<pre> s6-svc -a /service/httpd/log </pre>
@@ -156,5 +157,16 @@ that will send the commands to the service. Any error message written during
the waiting period will mention it is being written by s6-svlisten1; this is normal. </li>
</ul>
+<h2> Notes </h2>
+
+<ul>
+ <li> The <tt>-t</tt> and <tt>-r</tt> options make <a href="s6-supervise.html">s6-supervise</a>
+send a signal to the service if it is up; but if the service is currently down,
+they do nothing, and in particular they do not instruct s6-supervise to bring the
+service up. Consequently, <tt>s6-svc -rwr <em>servicedir</em></tt> may wait forever
+for the service to be up, if it is currently wanted down. To avoid that, make sure
+your service is wanted up by using <tt>s6-svc -ruwr <em>servicedir</em></tt> instead. </li>
+</ul>
+
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