NFS Permissions – Fix ‘Operation Not Permitted’ Error on chown for Mounted NFS Partition

chownnfspermissions

I have a remote partition that i have mounted locally using NFS.

'mount' gives

192.168.3.1:/mnt/storage-pools/ on /pools type nfs (rw,addr=192.168.3.1)

On the server i have in exports: 

/mnt/storage-pools   *(rw,insecure,sync,no_subtree_check)

Then I try

 touch /pools/test1
 ls -lah
 -rw-r--r--  1 65534 65534    0 Dec 13 20:56 test1
 chown root.root test1
 chown: changing ownership of `test1': Operation not permitted

What am I missing ? Pulling my hairs out.

Best Answer

By default the root_squash export option is turned on, therefore NFS does not allow a root user from the client to perform operations as root on the server, instead mapping it to the user/group id specified by anonuid and anongid options (default=65534). This is configurable in /etc/exports together with other export options.

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