Chown permission denied on samba share

Question

I have a raspberry with samba and it shares a drive inside the network and allow to everyone to write, read etc

I have another raspberry which mount the samba shared drive and I would execute, from this second raspberry, a chown on a folder but I don't have the permission.

I am going to set owncloud on the second raspberry which has to allow a user to own a folder.

On both Raspberry there is the default pi user, sambaRaspi has the following configuration

My smb config:

[MyAwesomeShare]

comment = MyAwesomeShare
path = /mnt/HDD
writeable = yes

cloudRaspi (raspberry with owncloud) mounts the samba share

//IP/MyAwesomeShare /mnt/SAMBA_SHARED_HDD  cifs username=pi,password=MyPassword,uid=1000,gid=1000  0  0

cloudRaspi need to run chown on the samba share

Answer 1

I believe you'll have to create a new user (with adduser) on the RPi running samba, to match the user which runs OwnCloud on the other RPi.

As such, there are at least two possible ways to get correct permissions:

1. Change ownership of /mnt/HDD to the right user on the samba server.

2. Let the right user to create a new folder on the samba share. This would require /mnt/HDD to have write permissions for users of the share. Any directory created by those users will be owned by them automatically.

Answer 2

Let's say,

• raspiSamba is the raspi on which a samba server is running
• /mnt/HDD is a directory on raspiSamba
• userX is a OS level user on raspiSamba
• raspiCloud is the raspi on which owncloud is running
• /mnt/mycloud is the mount point on raspiCloud
• cloudUser is a OS level user (and also owncloud user) on raspiCloud

For the first 2 steps, forget about raspiCloud, we are on raspiSamba.

Step #1: Be sure that Linux system permissions are OK for userX to read and write /mnt/HDD, because system permissions have higher priority than Samba permissions.

Step #2: Check your Samba permissions for /mnt/HDD and userX. It should be something like the following:

[MyAwesomeShare]
comment = MyAwesomeShare
path = /mnt/HDD
write list = userX

Now, forget about raspiSamba and focus on raspiCloud. We are on raspiCloud.

Step #3: Be sure that the OS level owner of /mnt/mycloud is cloudUser.

Step #4: (as root) Mount raspiCloud:/mnt/HDD onto /mnt/mycloud with the credentials of userX. We don't need to have a userX user on raspiCloud. We just need to know its credentials. Here is an example of mount command:

mount -t cifs //raspiSamba/MyAwesomeShare /mnt/mycloud -o user=userX,pass=XXXX

As the final picture,

• /mnt/mycloud is owned by cloudUser who is an owncloud user from the perspective of raspiCloud.
• /mnt/mycloud is mapped to raspiCloud:/mnt/HDD as userX from the perspective of raspiSamba.