Cannot write to mounted windows share

leupi · 01-11-2010, 03:08 PM

I have mounted a windows share to my Ubuntu 9.10 system by doing the following:

Code:

//wollemi/shared	/wShared	smbfs username=name,password=password	0	0

I also tried:

Code:

sudo mount -t cifs //wollemi/shared/imageTest -o username=name,password=password /images

Each time I have view access but not write access. If I browse to the windows share via 'Places' > 'Network' > 'Windows Network' etc. then I do have write access, as soon as I mount it to /images, I loose write access. I also did a ls -la before the mount and the permissions were rwx-rwx-rwx and owned by me, after the mount it was rwx-r_x-r_x and owned by root. When I unmount it, /images reverts back to my ownership.

In order to access this share via DigiKam I need to mount it to the filesystem, but as soon as I do I loose write access.

Any thoughts?

Thanks

kbp · 01-11-2010, 06:13 PM

You could try adding 'rw' to the mount options and see if it makes a difference..

Code:

//wollemi/shared	/wShared	smbfs rw,username=name,password=password	0	0

cheers

jschiwal · 01-11-2010, 07:47 PM

Microsoft does not support all of the CIFS extentions. Use the "uid=", "gid=", "umask" & "fmask" options to change the ownership and permissions of the share after it is mounted. Also check the how the windows share is setup. If it is a read-only share, you won't be able to mount it rw.

Also make sure that the windows user is an samba user with smbpasswd. Another thing I would recommend is creating a credentials file in your home directory and using a "cred=" option pointing to this file. The /etc/fstab file is world readable so you shouldn't have passwords in it.

leupi · 01-12-2010, 07:10 AM

I tried to do what kbp said (adding rw):

Code:

//wollemi/shared	/wShared	smbfs rw,username=name,password=password	0	0

but the result was the same.

I am not sure what you mean by:

Quote:

Use the "uid=", "gid=", "umask" & "fmask" options to change the ownership and permissions of the share after it is mounted.

I did this:

Code:

tparks@d600:/$ id
uid=1000(tparks) gid=1000(tparks) groups=4(adm),20(dialout),24(cdrom),46(plugdev),104(lpadmin),115(admin),120(sambashare),1000(tparks)

Not really sure what to do with that info, could you please explain?

I appreciate the help, thanks.

jschiwal · 01-12-2010, 07:16 AM

Here is an example. I just mounted the users share on my desktop:

Code:

sudo mount -t cifs //elite/users /mnt/elite/users/ -o rw,uid=jschiwal,gid=jschiwal,file_mode=0117,dir_mode=0117,cred=/home/jschiwal/.credentials,nls=utf8
jschiwal@qosmio:~/hd2/podcasts/GoingLinux> ls -ld /mnt/elite/users/
drwxr-xr-x 4 jschiwal jschiwal 0 2009-12-16 09:31 /mnt/elite/users/

leupi · 01-12-2010, 07:32 AM

That worked!

I only used the first line and I put my username and password in as I do not yet know how to create a credentials file, but I assume that there is enough in your post for me to figure it out. I am, for now, simply happy that I have write access. I am not sure what the 2nd and 3rd lines do, but I will look into them and figure it out.

I am going to put that in my fstab file for now while I figure the rest out. Thanks again!

leupi · 01-12-2010, 07:47 AM

I seem to be having an issue putting the line in /etc/fstab. I tried using:

Code:

//wollemi/shared /wShared cifs  -o rw,uid=tparks,gid=tparks,file_mode=0777,dir_mode=0777,username=name,password=password	0	0

But I get the error:

Quote:

tparks@d600:/$ sudo mount -a
[mntent]: line 23 in /etc/fstab is bad

Could you tell me what I might be doing wrong with that?

jschiwal · 01-12-2010, 08:51 AM

The fstab file has it's own manpage. You were very close however. You have an -o before the options which you would use when entering a mount command.

Also, check your file_mode & dir_mode values.

For the credentials file, create a text file in your home directory with at least the first 2 lines:
username=<your username>
password=<your password>
domain=<windows domain or workgroup name>

I used the name .credentials so it would be hidden. In /etc/fstab or mount command options, use the full path to the file.

leupi · 01-12-2010, 07:42 PM

I did as you said and everything is working great. I added this to /etc/fstab:

Code:

//wollemi/shared /wShared cifs	rw,uid=tparks,gid=tparks,file_mode=0700,dir_mode=0700,cred=/home/tparks/.credentials	0	0

I appreciate all of your help, this has made things much easier at work and I am not able to use Linux for pretty much everything now.

Thanks again

roystonlodge · 04-08-2010, 07:56 PM

I realized you already found a solution to your problem, but I still thought my method for mounting my most frequently used windows shares might be useful to you:

(FYI: I'm using Debian Squeeze with LXDE as my desktop environment.)

This example is for mounting my samba NAS.

I installed smbfs.
I created the following directories /home/username/mnt and /home/username/mnt/nas

I saved the following script as /usr/bin/nas

Code:

#!/bin/bash
smbmount //path/to/windows/share /home/username/mnt/nas -o rw,guest
ln -s /home/username/mnt/nas /home/username/Desktop/nas

I created a "start menu" item for the nas script labelled Mount NAS

So now, when I want to mount my nas, I select the Mount NAS menu item, which then mounts the share AND conveniently creates a shortcut on my desktop.

I also have the following script called /usr/bin/unas for when I want to unmount the share:

Code:

#!/bin/bash
sudo umount /home/username/mnt/nas
rm -f /home/username/Desktop/nas

If I don't unmount it before I shut down the computer then the shutdown process freezes up on me.

Hope you find this useful!