Question about NFS (Why root cannot delete mount files on NFS client?)

[daikeyang]

Hi, guys. I have one question about NFS.

"User root is all powerful, how come on the NFS client, root cannot create or delete files on the mounted file system?"

Thanks in adnvance.

-K.D.

[D-cat]

This would depend on how the file system was mounted. If the mount is read-only, then nobody can make writes to the mount, root included. As a security precaution, the server may disallow calls claiming to be from a remote root, or it may just be the security permissions for that share doesn't recognize a user "root" from a remote machine, only a certain defined user has write permissions.

Any way I look at it, it all looks to be how the shares permissions are set on the server, the client has nothing to do with it (except what user is accessing the share) unless the mount was defined read-only.