Tvheadend

Does NFS have to be enabled if it is within the same system?

No

You probably havent got the seytup right.

You need to consider:-

1. Your Synology settings giving access rights for users , to the volume and folder
2. The mount permissions (UID,GID) of the volume as mounted by linux (fstab, automount whatever)
3. The directory permissions for the directory being accessed. NOTE: To access a directory, relevant users/groups MUST be given EXECUTE privilage AND ALL parents of the directory MUST have EXECUTE privilage for the given user/group.
4. ACLs may be set which also need to be setup - this is more complex so oout of scope for this response suffice to say if ACL is active on your mounted volume - good luck!

here is a good article, using Debian, but applies to most linux distros
https://wiki.debian.org/Permissions

I had the same issue -> you have to give full rigths to parent folder

Hi,

Might be a few months late, but in fact this seems rather straightforward after having some inspiration from the earlier replies...

I'm using a subfolder "RecordedTV" in the "video" shared folder.

1. Deduce the path to the RecordedTV folder using Filestation properties for the subfolder. This is my path "/volume1/video/RecordedTV"
2. Add this as the recording path in TVH (I cloned the default recording profile)
3. Once you've created the folder, on the Synology, go to control panel, shared folders, pick the video shared folder (or the one you want to use)
4. Go to Permissions tab
5. From the drop down where you normally see Local Users or Local Groups, select System internal users. You will now see a whole load of accounts that are normally not visible.
6. Find the TVheadend account (mine is sc-tvheadend-testing) and allow it Read & Write access on the shared folder (it should inherit to subfolders automatically.

Hope that's useful to someone

Solo