I think someone already provided an answer in a similar message you posted. The root user is squashed to user nobody.
You need to add the "no_root_squash" option.
See the manpage for "exports" and "idmap.conf".
You didn't post the permissions of the directories being shared. That is another part of the equation. For example, suppose that the permissions are
rwxrwxrwt. In this case, one user will not be able to delete another users files.
These are the permissions you want for a globally writable share. However, you would want it mounted on a partition with the "noexec" and "nodev" options for security reasons.
Last edited by jschiwal; 12-02-2007 at 08:05 AM.