How to mount a volume with file owners being nobody?

Peter Levart peter.levart at
Wed May 7 11:20:34 UTC 2014

On 04/18/2014 05:28 AM, Wang Weijun wrote:
> I have seen such things before but cannot create one now. I would like to simulate a problematic environment on my own machines. Any suggestion is welcomed, I have Mac OS X and Windows at hand but Linux and Solaris are also OK.
> Thanks
> Max

Hi Max,

One particular unusual environment I have observed is such that on a NFS 
client, files are reported as having owner/group being nobody/nobody, 
but actual access to files is correctly handled by the NFS server using 
UIDs/GIDs. Correctly meaning that the effective UID/GID of the process 
executing on NFS client is handled by the NFS server when granting 
particular operations on files/directories as they appear on NFS server. 
These are the mount options reported on NFS client, which is Linux 
(CentOS 6.5):

server:/directory on /directory_nfs type nfs 

The NFS server is a Solaris box (Solaris 10, sparc) which speaks NFSv4 
and runs the nfsmapid daemon, but the client is not running the idmapd.

Hope this helps.

Regards, Peter

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