[Building Sakai] Attachments persist after containing tool and even site have been removed.

[Steve Swinsburg]

Hi

Well each tool stores things differently so it would be up to each tool to delete its own content. This could be done in a similar way to the way each tool participates in the archive/merge process. But there would need to be ways to hard delete the content. 

Combined with the new soft site deletion which is now in trunk, this might be a good time to think about hard deletes since sites can be restored while softly deleted and then really deleted after the grace period. 

Interesting. 

Cheers
Steve

Sent from my iPhone

On 16/10/2012, at 21:40, Jaques Smith <jaques at opencollab.co.za> wrote:

> Hi Guys,
> 
> So the next question is, how do we get rid of all the "unlinked" resources?
> Is there not a better way of archiving and deleting sites?
> 
> Regards,
> Jaques
> 
> 
> On 16 October 2012 09:38, Francois Campbell <francois at opencollab.co.za> wrote:
>> Good day.
>> 
>> At Steve Swinsburg.
>> Thank you very much for the prompt answer.
>> 
>> At Robert Cohen.
>> The points you have raised seem extremely valid, and I hope are addressed in the future.
>> 
>> This has answered my question. Thank you very much
>> 
>> -- 
>> Warm regards.
>> Francois Campbell.
>> 
>> 
>> On 16 October 2012 03:42, Robert Cohen <robert.cohen at anu.edu.au> wrote:
>>> 
>>> From: Steve Swinsburg <steve.swinsburg at gmail.com>
>>> Date: Tuesday, 16 October 2012 10:07 AM
>>> To: Francois Campbell <francois at opencollab.co.za>
>>> Cc: <Sakai-dev at collab.sakaiproject.org>
>>> Subject: Re: [Building Sakai] Attachments persist after containing tool and even site have been removed.
>>> 
>>> Hi Francois,
>>> 
>>> This is expected behaviour. No content is deleted when sites are deleted.  The files and assignments will not be accessible after the site is deleted. This is so that you can restore the site if need be and then the content will be available again.
>>> 
>>> cheers,
>>> Steve
>>> 
>>> 
>>> On 16/10/2012, at 2:14 AM, Francois Campbell <francois at opencollab.co.za> wrote:
>>> 
>>>> Good day.
>>>> 
>>>> We have the following scenario:
>>>> An assignment is created attachment only submissions with a project site.
>>>> Student complete the assignments.
>>>> Assignments are graded.
>>>> At some point the assignment will be removed. At this point we wanted to ascertain whether the attached files would be removed with the assignments.
>>>> My tests have some that the files persist after the assignment has been removed. (Files also persist after the site has been removed, tomcat restarted etc.)
>>>> 
>>>> My question is this the desired behaviour or is there something I am missing ( configuration option, a scheduled garbage process etc. )
>>>> 
>>>> We have moved our content store outside of the default web apps location.
>>> 
>>> 
>>> 
>>> 
>>> Being able to restore deleted data should be what backups are for.
>>> 
>>> This kind of behaviour makes sakai less suitable for use in production environments.
>>> Obviously not impossible to use, since plenty of sites are using it in large production environment, but certainly harder to use.
>>> 
>>> Suppose, you have a large teaching environment with 1000's of courses running each year.
>>> At the end of the year you want to delete all the 2012 courses and create new courses for 2013.
>>> Except you don't get the disk space back,so you rapidly run out of disk space.
>>> 
>>> Personally I think the poor backup facilities and lack of facilities for cleanup up disk space are amongst the biggest weaknesses in sakai.
>> 
>> 
>> 
>> 
>> 
>> 
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