need help with automated backup - some courses are not backed up

by Bernhard Weichel.  

Hi, since Moodle 3.3 I have problems with automated backup: Some courses are not backed up even if they were changed recently.

I try to track it down:

1. When I look in the "Dashboard > Site administration > Reports > Backups", I see lots of "unfinished" backups. But it seems that these backups are not resumed in the next run of cron.

2. I invoked the cli script "automated_backups.php". In the output of the same, I see

Backing up Einführung AT: Gott, das Volk und die Völker...
complete - next execution: Tue, 17 Oct 2017 00:00:00 +0200
Backing up Transformational Leadership...
Backing up Inklusion als Herausforderung in Kirche und Mission...
Skipping NT-Theologie (Not modified in the past 10 days)
Backup of 'NT-Theologie' is scheduled on Tue, 17 Oct 2017 00:00:00 +0200

In some courses, I see a "complete" message, while others do not have such a message (e.g. "Transformational Leadership"). The first are ok in the report, the second are "unfinished". When I click "view logs" of such an unfinished course in the Report, I get "There were no backups found." But I cannot see a log file.

3. I cleaned up moodle_data/temp/backup and executed "automated_backups.php" again, but this did not change the situation.

4. i created a backup of the course using the course menu. The backup was created without problem.

My questions:

Is there a way to reset the system, such that all "unfinished" backups are restarted?

What else can I do?

Should I perform a "reset cache"

thanks in advance

Bernhard