Unable to write to synology NAS

Serenwipity · 09-15-2017, 10:58 AM

Hi there!

Iḿ already spending days to connect my linux laptop (Elementary OS) to my synology NAS (DSM 4.2). I finally was able to mount my Nas share to a home folder. Even on startup

. The big trick was to delay the mounting else it was to soon (i really like the speed of Linux!).
I was happy, until I actually started using my external network drive. I can read it, but not write to it. I have done pretty much everything I can find on the web, but to no result.

What i have done:
In fstab the following works (without the writing permissions)

Code:

//ipnas/NAS /home/NAS cifs credentials=/home/wiebe/.smbcredentials 0 0

I made a smbcredentials file which is read correctly on boot
As soon as I add uid=1000, gid=1000 as parameters in fstab I get an error. Also file_mode=0777 doesnt work (and many other things). Its for me a needle in a haystack. Who can help me out?

Maybe it has to do that Im unable to install swat by apt-get install swat?

Some info:
With testparm -s:

Code:

Load smb config files from /etc/samba/smb.conf
rlimit_max: increasing rlimit_max (1024) to minimum Windows limit (16384)
WARNING: The "syslog" option is deprecated
Processing section "[printers]"
Processing section "[print$]"
Loaded services file OK.
Server role: ROLE_STANDALONE

# Global parameters
[global]
	server string = %h server (Samba, Ubuntu)
	server role = standalone server
	map to guest = Bad User
	obey pam restrictions = Yes
	pam password change = Yes
	passwd program = /usr/bin/passwd %u
	passwd chat = *Enter\snew\s*\spassword:* %n\n *Retype\snew\s*\spassword:* %n\n *password\supdated\ssuccessfully* .
	unix password sync = Yes
	syslog = 0
	log file = /var/log/samba/log.%m
	max log size = 1000
	dns proxy = No
	usershare allow guests = Yes
	panic action = /usr/share/samba/panic-action %d
	idmap config * : backend = tdb


[printers]
	comment = All Printers
	path = /var/spool/samba
	create mask = 0700
	printable = Yes
	browseable = No


[print$]
	comment = Printer Drivers
	path = /var/lib/samba/printers

With ls -dl:

Code:

drwxrwxrwx 32 wiebe wiebe 4096 sep 15 15:23 .

Hope somebody can help me out?!

michaelk · 09-15-2017, 03:25 PM

The smb.conf file and swat is used to configure the samba server on your laptop which allows other computers to access files. It is not needed to access files from other computers.

Just for your information most file browsers have a built in cifs client that can connect without needing to have an entry in your /etc/fstab file. You should also have write access. It creates a virtual file system within the file browser. If you need to access the share form outside the file browser then I would mount via /etc/fstab.

Adding gid=1000,uid=1000 should of worked. What was the error message?

Serenwipity · 09-15-2017, 04:49 PM

Thanks for the quick reply. Good to know its not the swat or smbconfig. I didnt alter it.

I use konqueror as file browser. When I add the parameters (or without) uid and gid I get the error "Äccess denied. Could not write to.." when I copy a file to the nas. I does copy the container/icon of the file to the nas, but its empty/no data. The otherway around (nas>laptop works).

But as I understand altering the fstab will not effect how konqueror mount. Thats explains a lot why nothing worked. So first step is how to get konqueror to work. Next step is that I also want to use another share for auto backup. How to solve?

michaelk · 09-15-2017, 07:05 PM

Elementary installs the Pantheon desktop by default. Did you install KDE?

Konqueror can browse a windows network for servers or you can specify the NAS by using the connect to server option.
If you browse the network you should be able to select the NAS -> share. You will then be prompted to enter the username/password.

I assume the NAS share has been previously configured for read/write permissions for the designated user.

Serenwipity · 09-16-2017, 02:54 AM

I thought KDE is another GUI/shell/desktop? How can I check if its installed and if not, how to install it without loosing eOS. Do I select lightdm or sddm?
Or do you recommend kde desktop. Im also using Playonlinux for MS Word and 1password.

If I go to the network share within konqueror and fill in username/password, I can also write to the NAS. The reason I dont prefer that is that it doesnt save username/password (didnt save it in kwallet (read many problems with it) and im not asked again), but moreover, I still cant write to the NAS from the tree view, which I really want (if possible).

The nas permissions are set correctly for the user I login in fstab, but is different from the login on the laptop (same username, different password). But the uid are probably different anyway as Synology starts uid with 1026.

michaelk · 09-16-2017, 11:04 AM

I would expect the following fstab line to work.

Code:

//ipnas/NAS /home/NAS cifs credentials=/home/wiebe/.smbcredentials,uid=1000,gid=1000 0 0

You can manually mount the share via the mount command to play with different options.

Code:

sudo mount -t cifs -o credentials=/home/wiebe/.smbcredentials,uid=1000,gid=1000 //ipnas/NAS /home/NAS

Serenwipity · 09-17-2017, 05:09 AM

As mentioned adding uid=1000, gid=1000 to the fstab file doesnt work.

But I just found the solution by adding the following to the /etc/rc.local file

Code:

sleep 30
mount -t cifs -o credentials=/home/user/.smbcredentials,uid=1000,gid=1000 //ipnas/NAS /home/NAS

exit 0

I even deleted the line in fstab and still works.

Now I can use the view tree in Konqueror and read/write to my NAS with konqueror!
Im a happy man!

Thank you for your suggestions and time. Appreciate it!