Hello all,

I have been trying to make this work with little success. What I am trying to do is mount a file system (fs) share from a NAS to my Ubuntu computer. The share mounts just fine, but I am having issues writing content. I am using the following command to mount the share:

sudo mount //<IP_address>/share_drive/path -t cifs /home/dir/share_folder/ -o "username=XXXXXXXX,password=XXXXXXXXX"

In some occasions I can created files/directories, but suddenly my write access will be lost. I have checked all the permission on the NAS server and the everything looks good there.

I have the same issue with a Windows share that I mount to Ubuntu from a Window Server 2012. I am using the following command to mount the Windows share:

sudo mount.cifs //<IP_address>/Public /home/dir_local/share_02 -o "username=xxxxxxxxxxx,password=xxxxxxxxxx"

Again I read all the files but not write or create anything new to it. I have also verified the permissions on the share and they work well on other system but not on Linux Ubuntu.

Any ideas or suggestions will be greatly appreciated.

Regards and thanks in advance.

Emman

Welcome aboard.

(Sorry, I can't help with Ubuntu.)

Any particular symptoms when the write access is lost? Every twenty minutes after mounting? Network went south for a second and came back? wpa_supplicant rotated keys? dhcp got a new lease? And various things normally found in the /var/log/ stuff. Perhaps a terminal or two open with tail -f /var/log/dmesg and tail -f /var/log/syslog. And if those "move" when the fail happens, a clue.

Have you tried forcing the permissions on the share in the mount? Also check the charset
Some people also have luck adding "nounix" to the mount options:
If it's a NAS, it probably supports NFS. If so, I would recommend using that over SAMBA/CIFS.

What are you using for the NAS? If it supports ssh, you could try sshfs (should only require ssh support on the NAS, you will need sshfs on the client), although this solution may not work for your windows system.