NFS sharing permission issue with child dataset?

[whc2001]

I have a dataset with two child datasets running on TrueNAS-13.0-U4. The parent and child datasets have the same user/group and ACL settings. When I share the parent dataset by SMB, the two child datasets appear to be two standard directories, and I can read and write them without problem when authenticating with the user in the ACL. However, when I export the parent dataset with NFS and mount it from another machine running Debian, there is a permission issue regarding the two child datasets.

When I log in with root on the client, the mounted directory is all good, just like with SMB. And the two child dataset directories are functional. I also have another regular account on that machine, which is the account that will be using the mounted data. When I run ls -la from the mount directory under that account, however, all the information regarding the two child dataset directories becomes all question marks and cannot be accessed.

I wonder if that's some limitation of NFS? Should I just use SMB instead?

Here are some images of the settings and the permissions:

 

[whc2001]

Well seems like no one is being helpful at all and I eventually figured this out. Firstly NFS won't work if NFSv4 is turned on so turn off it in the service config. After that each pool (including sub pool) need a separate NFS share. Finally on the target machine each NFS share need a separate fstab entry.

 

[whc2001]

Something like this, not sure why the group ID is 9000 but it works.