[SOLVED] Can't delete permanently: "Permission denied"

ℹ️ Support
1

Hello,
I’m having an issue deleting files in the web interface. This looks like a permission problem: could somebody help me?
Thanks!

Steps to reproduce

  1. Delete a folder (1.7 GB in my case)
  2. Go to trashbin
  3. Delete the folder from trash

Expected behaviour

Folder is permanently deleted

Actual behaviour

Error message: “Can’t delete permanently”

Logs:


Error | trashbin | can't delete /Alice.d1504790954/Alice-Backup//IMG_20151210_161610.jpg permanently. | 2017-09-07T15:43:45+0200
-- | -- | -- | --
Error | PHP | unlink(/media/raid/ncdata/data/etienne/files_trashbin/files/Alice.d1504790954/Alice-Backup/IMG_20151210_161610.jpg):  Permission denied at  /var/www/html/nextcloud/lib/private/Files/Storage/Local.php#220 | 2017-09-07T15:43:45+0200

For information:

  • /media/raid/ncdata/data is my nextcloud data folder, outside of /var/www/html/nextcloud/. www-data has ownership over this folder
  • I had added this folder in the data folder manually, and performed a rescan (occ files:scan). It worked perfectly and I could see the folder in my web interface without issue.
  • I was able to delete some files in a sub-folder “Boston” of this folder. But not able to delete “Boston” itself

Server configuration

Debian GNU/Linux 9.1 (stretch)
4.9.0-3-amd64
x86_64
Server version: Apache/2.4.25 (Debian)
Server built:   2017-07-18T18:37:33
PHP 7.0.19-1 (cli) (built: May 11 2017 14:04:47) ( NTS )
Copyright (c) 1997-2017 The PHP Group
Zend Engine v3.0.0, Copyright (c) 1998-2017 Zend Technologies
    with Zend OPcache v7.0.19-1, Copyright (c) 1999-2017, by Zend Technologies
mariadb  Ver 15.1 Distrib 10.1.26-MariaDB, for debian-linux-gnu (x86_64) using readline 5.2
Nextcloud version 12.0.2
  - installed: true
  - version: 12.0.2.0
  - versionstring: 12.0.2
2

Can you verify the permissions for this file?

3

thank you @tflidd
Permissions are www-data:www-data with -r--------
So I can understand why Nextcloud cannot delete it. What I can’t understand, is that other files, with same permissions, have been permanently deleted, in a subfolder of this folder.

Then I tried to change the permissions: chmod +w IMG_20151210_161610.jpg
Permissions are now -rw------- 1 www-data www-data
But Nextcloud cannot delete it either. And idem with -rw-rw-rw-

Do you understand?

4

Hello,
Would anybody have an idea about this issue?
Thanks!

5

What kind of system do you have? If you put files via webinterface, it is strange that php puts something as read-only …

6

Hello, in fact, it wasn’t added on the web interface:

7

I also tried the following:

sudo -u www-data php occ files:scan --path="/etienne/files_trashbin/files"

But still impossible to delete

8

Solution found: the problem came from the parent directory, which had only r permissions. I added w permissions, and it worked.
Thank you for your help.