- On NFS Server:
+ Create a user: nfs_server (uid-1015, gid-1015)
+ A folder named "/opt" on NFS server with permissions like this
dr-xr-xr-- nfs_server root ...
+ File /etc/exports:
/opt 192.168.3.0/24(rw,root_squash)

- On NFS Client:
+ Create a user: nfs_client (uid-1015, gid-1015)
+ Mount /opt on server to /mnt/test on local machine

- Access to server from the user nfs_client on client machine (a line was already added to fstab so that this non-root-user can mount). Mount was successful.

I have 2 questions:

1. Although "rw" permissions were specified in /etc/exports, nfs_client still couldn't write onto /mnt/test because this user didn't have "w" permission on folder "/opt" on server. Is this correct???
( I have already tested it, I just want to confirm the information)

2. From question 1, we can see that the permissions on a folder at the server must match the permissions specified in /etc/exports. Is this correct?????

Thanks for any help.

I would think that //server/opt needs to be accessable by GID, as a root folder I think it belongs to the root user, & therefore can't be written to by another user unless in the group root. Putting users into group root isn't the best solution, so, I think, change the GID of /opt to 1015, (& maybe add the root user to that group, although I don't think it will be neccessary).

The user owner of /opt folder is nfs_user, not root. I changed the user owner, but keeping the group owner as root.