Installation help

accidently deleted a repository file

 
 
Picture of Craig Cleator
accidently deleted a repository file
 

Version 2.5.1

Hi there,

I was over my account size limit so I went into my moodle data folder and then into my filedir folder and started deleting older large files. In the process I deleted a repository file that is responsible for enabling me to Manage my private files. Now all I get when trying to manage and upload into my private files is an error message explaining the file does not exist. My problem is I do not know which file and is there a replacement file I can get my hands on, or will an upgrade solve my problem?

Cheers

 

 

 
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Picture of Ken Task
Re: accidently deleted a repository file
Group Particularly helpful Moodlers

No backups?   Shame, shame!

Suggest trying to trick Moodle into thinking it has what it needs, but that depends upon the *exact* error concerning that file (location)

So turn on debugging.   Attempt to access what ever you clicked upon, etc. to see what Moodle says ... specifically.   You can then return here and respond (by pasting the text of the error) into a response of this forum.

'spirit of sharing', Ken

 
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Picture of Craig Cleator
Re: accidently deleted a repository file
 

Hi Ken,

Thanks for the help and yes I know I should be running a backup on my site. I have had the site for nine years and an ongoing battle with my server provider and space. Back-ups tend to create massive files on my site.

Here is the debugging message I get:

Debug info: [dataroot]/filedir/0d/74/0d74d5947507bca548de06af166f8513fa3a0048
Error code: storedfilecannotread
Stack trace:
  • line 175 of /lib/filestorage/stored_file.php: file_exception thrown
  • line 846 of /lib/filestorage/stored_file.php: call to stored_file->update()
  • line 399 of /lib/filelib.php: call to stored_file->set_source()
  • line 260 of /lib/filelib.php: call to file_prepare_draft_area()
  • line 65 of /user/files.php: call to file_prepare_standard_filemanager()
 Thanks
Craig
 
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Picture of Ken Task
Re: accidently deleted a repository file
Group Particularly helpful Moodlers

Let's see if it's only one and get info from the DB.

Run this query:

select * from `mdl_files` where `contenthash` like "0d74d5947507bca548de06af166f8513fa3a0048"

What does that show/list?

Work around?   We'll give Moodle what it's looking for ... but not really.

Manually, with whatever tool you have to work with files/browse files ...

First browse to moodledata and see if there is a '0d' directory.   If there is NOT create one.   Set permissions and ownerships like the other folders you see in that area.  If there is a '0d' directory, see if there is a '74' directory inside.   If not, create one (permissions/ownerships same as folders/files above).   Inside the '74' directory is there a '0d74d5947507bca548de06af166f8513fa3a0048' file?   If not, create a text file with that as the filename.   Same ownership/permissions as files/folders above it.

From the trace, looks like trying to update a file that was still in draft.

When you run cron jobs there are routines that deal with file system and does move files from draft to a component area (doesn't really 'move' physically, rather the reference in the DB is 'moved'.   Are there any errors in running cron?

Since you've been running a long time, same database?  Have any tools to check the status of tables - especially the mdl_files table status?

'spirit of sharing', Ken

 
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Picture of Craig Cleator
Re: accidently deleted a repository file
 

select * from `mdl_files` where `contenthash` like "0d74d5947507bca548de06af166f8513fa3a0048"

What does that show/list?

The search pulls up 29 rows, all with the same filename, fliearea where one row = private, one row = content and the rest = draft. All have the same contextid = 102 except for the filearea = content > contextid = 4231 with component = mod_page.

Work around?   We'll give Moodle what it's looking for ... but not really.

Manually, with whatever tool you have to work with files/browse files ...

First browse to moodledata and see if there is a '0d' directory.   If there is NOT create one.   Set permissions and ownerships like the other folders you see in that area.  If there is a '0d' directory, see if there is a '74' directory inside.   If not, create one (permissions/ownerships same as folders/files above).   Inside the '74' directory is there a '0d74d5947507bca548de06af166f8513fa3a0048' file?   If not, create a text file with that as the filename.   Same ownership/permissions as files/folders above it.

There was a folder called 0d. However, there was not a '74' within so I created it changed the permissions to reflect the top folder and then inside 74 created a text file with the filename as specified.

From the trace, looks like trying to update a file that was still in draft.

When you run cron jobs there are routines that deal with file system and does move files from draft to a component area (doesn't really 'move' physically, rather the reference in the DB is 'moved'.   Are there any errors in running cron?

Tried running a cron - job we shall see.

Since you've been running a long time, same database?  Have any tools to check the status of tables - especially the mdl_files table status?

I have been having troubles recently with my mdl_files table as draft files have been repeated for several of the same files. After a few weeks I get my server provider telling me to reduce the database under 500 mb. I manually search for all draft files and delete from database. It is a pain but seems to work. I still need to set up a cron job that will take care of this but not sure how.

Cheers

 

 
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Picture of Craig Cleator
Re: accidently deleted a repository file
 

Actually Ken, in my moodledata directory there are several folders named '0d'. They all show up in filedir but deeper in numbered folders. So within filedir/0d/74 I created a file called  '0d74d5947507bca548de06af166f8513fa3a0048' with permissions 750 or the same as folders above.

Back in moodle here is the error debug info I get.

Debug info: [dataroot]/filedir/a9/6d/a96d80ff2a77aa3fe204e8ce2c4c9399033b4685
Error code: storedfilecannotread
Stack trace:
  • line 175 of /lib/filestorage/stored_file.php: file_exception thrown
  • line 846 of /lib/filestorage/stored_file.php: call to stored_file->update()
  • line 399 of /lib/filelib.php: call to stored_file->set_source()
  • line 260 of /lib/filelib.php: call to file_prepare_draft_area()
  • line 65 of /user/files.php: call to file_prepare_standard_filemanager()
 
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Picture of Ken Task
Re: accidently deleted a repository file
Group Particularly helpful Moodlers

'moodledata directory there are several folders named '0d' ... well, yes, that possible with hashing, but they do NOT, cannot exist at the same level ... ie, just below moodledata.

The first error you got pointed to a file we created and placed manually.

This next error is for a file that should be in moodledata/a9/6d/

and it's hashed name is a96d80ff2a77aa3fe204e8ce2c4c9399033b4685

If you can't purchase a plan that allows DB larger than what you are using right now,  then this problem will continue to happen IF you manually remove records in the DB without removing also the actual files.

Only way I can help is to tell you that - and to suggest (IF your time is worth anything and you desire to NOT have these problems) you purchase a plan that allows for larger DB's.   If the provider cannot do that ... search for another provider.

Continuing to manually remove records and files leaves a lot of room for human error.   One of these days you could end up destroying your Moodle site.   Only hope and re-course is for the provider to restore your site.   Uhhhh, your provider is taking snapshots of your space, aren't they?   That's probably not a free service and will cost.

IMHO, this does illustrate that maybe Admins of a site do need tools inside the Moodle UI to 'deal with' the new file system.   But, wouldn't expect any such tool from Moodle HQ coming anytime soon.   Hasn't reached critical mass yet.

http://docs.moodle.org/26/en/Cron

Since you are remotely hosted, check with provider about how to setup cron jobs.

'spirit of sharing', Ken

 
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Picture of Craig Cleator
Re: accidently deleted a repository file
 

This next error is for a file that should be in moodledata/a9/6d/

and it's hashed name is a96d80ff2a77aa3fe204e8ce2c4c9399033b4685

 

Inside moodledata/filedir/a9/6d is a file named: a96d7e5f2e15f7d3a701311417fae4ea7ff578c3

Should I add the delete this and add a file with the name: a96d80ff2a77aa3fe204e8ce2c4c9399033b4685

or should I leave the file and add a second with that name?

I will look into setting up a proper Cron job.

Thanks

 
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Picture of Craig Cleator
Re: accidently deleted a repository file
 

Hi Ken,

 

It appears that the problem goes beyond just the private files repository. Trying to edit several pages produced the following errors.

Debug info: [dataroot]/filedir/06/2f/062fb70cdaabee8481b6e1166645290d1f1bb16e
Error code: storedfilecannotread

Debug info: [dataroot]/filedir/4b/b3/4bb35d22580d5e7585644a63b5e856ce3ea6d473
Error code: storedfilecannotread
 
Debug info: [dataroot]/filedir/7b/d6/7bd6914263db69e9a33595a69e552767cc95f153
Error code: storedfilecannotread
 
Debug info: [dataroot]/filedir/a9/6d/a96d80ff2a77aa3fe204e8ce2c4c9399033b4685
Error code: storedfilecannotread
 
Debug info: [dataroot]/filedir/c0/bd/c0bd0f02b726c9a3aca98d0d34e54339a2c539f8
Error code: storedfilecannotread
 
As far as I know this is it.
 
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Picture of Ken Task
Re: accidently deleted a repository file
Group Particularly helpful Moodlers

Thought I suggested that this might involve more than one manual re-creation to satisfy Moodle (maybe not).

That's not too many to manually re-create, is it?  Considering you get the site usable again.   You might run into more of them later.   If so, you'll just have to do the process again ... and don't forget to re-edit whatever that pointed to the man-made text file.

'spirit of sharing', Ken

 

 

 
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Picture of Vani Bheemreddy
Re: accidently deleted a repository file
 

Hi, 

I have a similar issue. 

Can I delete files from Server Files repository? Will this impact the courses where these files are added as I understand there could be some courses where files are added as 'alias/shortcut' and some courses as just a  'copy'?

 
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Picture of Hartmut Scherer
Re: accidently deleted a repository file
Group Particularly helpful Moodlers

Hi Ken,

Thank you for your post to give Moodle DB what it's looking for. As a site admin I could no longer edit my profile. 

Debug info: [dataroot]/filedir/e5/34/e5348160aa956f0a9eb4ba8a6146ab9365c17303

Error code: storedfilecannotread

I added an empty file in e5/34 and then I got another error message

Debug info: [dataroot]/filedir/a3/2f/a32fa4fde0a3ceb81233c25ac1975236b4a044e2

Error code: storedfilecannotread

I got a third error message. All messages had to do with a missing picture for the profile. After I added an empty file into the last directory, I could edit my profile again.

I am very glad for your detailed instructions, Ken. Your advice is extremely helpful.

With kind regards,

Hartmut

 
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Picture of kousar khan
Re: accidently deleted a repository file
 

Thanks Ken it worked for me.

 
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