I recently purchased a Pi4, which is attached to a switch on my network (which is in turn attached to the Gateway unit of my Eero 3-pack - which works great, incidentally).
The Pi 4 has full internet access and has been assigned a static IP. It has been set up as a pi-hole, and is working well.
I have a Synology DS220j NAS attached to the same switch. The DS220j is recognized as a network drive by 4 Windows computers (one attached to the same switch, the others by wifi to the Eero mesh). Each computer can copy and move files to and from the NAS.
My problem is, I have not been able to mount the NAS as a network drive on the Pi4. I have tried several internet tutorials (usually through SSH commands), but nothing seems to work.
I even tried this tutorial from Synology:
https://www.synology.com/en-us/knowledg ... etwork_NFS
As part of this procedure, I have the DS220j set for NFS permissions.
I CAN go through the steps to mount the drive (>network>mount in the file explorer), and SEE the NAS on my Pi4 (though each time I reboot the Pi4, I have to remount the network drive). I can navigate around the drive, finding folders and files - but I cannot seem to transfer (move or copy) files from the Pi4 to the DS220j, or vice versa. I keep getting "permission denied" error messages.
Hoping to start over, I've tried to unmount the drive, using the "sudo umount -a" command in SSH, but I get this reply:
umount: /run/user/1000: target is busy.
umount: /run/user/999: target is busy.
umount: /var/log: target is busy.
umount: /sys/fs/cgroup/unified: target is busy.
umount: /sys/fs/cgroup: target is busy.
umount: /run: target is busy.
umount: /dev/shm: target is busy.
umount: /dev: target is busy.
umount: /: target is busy.
I've been working with windows computers for years, but I'm a complete novice with both the Pi4 and Linux in general, so I'm assuming the problem is due to my ignorance.
I should mention that I AM able to quickconnect to the NAS via the web browser on my Pi4, and have successfully uploaded files from the Pi4 to the NAS, and downloaded files from the NAS to the Pi4. But I can't seem to mount the NAS as a network drive on the Pi4.