I followed the instructions here: cifs-for-whitelight
to enable smb on my Mybook-backup. Worked like a charm. Mounting and using rsync worked. Now I decided to install rsnapshot following your tut. After some mounting and unmounting I received and error like couldnt read /etc/fstab on trying to mount again.
Therefor I decided to reboot the WD and afterwards I received a "no such device" error on trying to mount again. So I ran /sbin/insmod /lib/…../cifs.ko again and voila its working again.
Now I'm asking myself if I have to retype that command every time after rebooting the mybook or if there is a permanent solution for this? I need to create several backups of my Terrastation Pro NAS and it'd like to have this fully automated.