On Jan 28, 2008 4:27 PM, Marshall Hampton <[EMAIL PROTECTED]> wrote:
>
> I now have 14 students actively using Sage on 3 different servers, and
> I have run across a mysterious problem I haven't seen reported here
> before.  Three of my students had worksheets suddenly go missing,
> without a deliberate delete.

There's actually currently no way in the Sage notebook to delete a worksheet.
You can move it to the trash, but there's no functionality for actually purging
the trash.  So it's very curious that this happened.  Do the students have *any*
hints at all about what they might have done to cause the behavior?  I wonder
if there are any hints in the worksheet files themselves?

Sorry we haven't had any ideas yet, but in any case I think it's very helpful
that you reported this, so that we can keep it in mind, and if anything similar
comes up know that it isn't just an isolated incident.

By the way, do your run the worksheet processes under a separate user from
the sage notebook, e.g, use the server_pool option?   If you don't on a public
notebook server, maybe a student did something very nefarious that resulted
in a deleted worksheet.

> I looked in the notebook files and the
> worksheets were still there, just not visible on the list of
> worksheets.  Any guesses on what happened?  As a stopgap, I manually
> pasted in the worksheet text to a new copy, but if this happens a lot
> it will really aggravate them.
>
> -M. Hampton
> >
>



-- 
William Stein
Associate Professor of Mathematics
University of Washington
http://wstein.org

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