Re: 2.9 course backup seems to stall

The progress bar during backup suffers from the same problem as progress bars during all complex operations.

To give a massively simplified example, suppose that doing a backup only required these three steps:

1. Step 1
2. Step 2
3. Step 3

And stuppose that normally steps 1 & 2 are slow, and 3 is quick.

Then, in the overall progress bar that shows the progress of the backup, you might make Step 1 and step 2 each represented by 45% of the progress bar, and step 3 be the last 10%.

However, in any given course, the actual times may not break down like that, if the course is unusual. E.g. we might zoom through the first 45% of step 1, then go slower in step 2 and really grind to a halt in step 3.

Of course the real backup is much more complex that this. There are many separate stages, and I don't know how much of the progress bar each one takes. However, what is probably going on is that for your corse, one step at the end that is normally really quick is getting bogged down.

I can't think of an easy way to find out what step that might be.