NFS troubles

[Oliver Fromme]

Timur Nasyrov <itabox at yandex.ru> wrote:
 > I’m trying to establish NFS communication between two FreeBSD boxes
 > (5.3 Release and 4.10 Release). After mounting shared resource I try
 > to copy some data into nfs-mounted point.  
 > 
 > And one strange thing is noticed – my files on the nfs-mounted folder
 > have as owner "-2" but as group have "wheel". When I trying to use a
 > file manager (Midnight Commander) to copy data from local drive to
 > nfs-mounted point I receive an error-message: "Cannot chown target
 > file "file_name" Operation not permitted". Even though the file itself
 > is copied with "-2:wheel" UID/GID.

You're probably trying to copy the files as root.
By default, root is mapped to UID -2 ("nobody") when
accessing an NFS server.  This is done for security
reasons.

To map root to a different user (e.g. to root itself
on the NFS server), user the "-maproot=..." option in
your /etc/exports file.  However, be sure to know what
you're doing and what the security implications might
be.  See the exports(5) manpage for details.  

Best regards
   Oliver

-- 
Oliver Fromme, secnetix GmbH & Co KG, Oettingenstr. 2, 80538 München
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