The beginning of the update process has great step-by-step instructions at /update.php?op=info .. especially the handy link to:
3. Put your site into maintenance mode.
But on the results page at /update.php?op=results these are the instructions:
Drupal database update
Updates were attempted. If you see no failures below, you may proceed happily to the administration pages. Otherwise, you may need to update your database manually. All errors have been logged.
At this stage it would be very good to add a link to "Take your site out of maintenance mode" with a link to /admin/settings/site-maintenance
Comments
Comment #1
dwwI know it's confusing (I didn't choose these names), but "update.module" is for the new part of 6.x core that checks for available updates to your modules and themes. You're talking about update.php, which is the "update system" component...
Furthermore, core never adds new features to the stable release series. So, the only way this is going to happen is in the next development series, currently 7.x-dev.
Cheers,
-Derek
Comment #2
webchickI think this would be a nice little usability improvement.
Comment #3
dave reidIm pretty sure this is actually handled automatically now. Plus when the site is in maintenance mode, the message that is shown on all the pages includes a link to take the site out of maintenance mode. See #309821: Automatic Site Maintenance During Update.php and #320146: when in offline mode, link to the admin page in the message that appears.