UNIX for Dummies Questions & Answers

Hi all,

I have NFS share that is being mounted on both solaris10 and RHEL5.
The ownership of files is right on solaris box but not on RHEL5 box.
I logged in as root and when i try to change ownership with group, i am getting following error.

Code:

chown -R oracle dba <filename>
chown: changing ownership of  <filename> permission denied

Code:

on solaris
 
drwxr-xr-x   4 oracle   dba         2.0K Feb 13  2007 filename
 
on linux
 
drwxr-xr-x 4 avahi-autoipd users         2.0K Feb 13  2007  filename

Where are you logged as root ? The NFS server or one of the clients (RHEL or solaris) ?
Without changing the export option on NFS server (no root squash), you will not be able to use root on client for such actions.

Use oracle user on solaris client to change permissions.
On NFS server you will be able to change permissions as root.

Hi Peasant,
Thank you for reply.

I logged in as root on client boxes (solaris and linux).
On solairs permissions are good and i want the change only to occur on linux box. How can i use oracle user to change the permissions that can persist on linux box ?

You cannot. The Oracle user cannot take ownership of a file from avahi-autoipd, only root can do that.

You would want to..

1. Define oracle:dba uid/gid on NFS server, numeric gid/uid should not exist on client.
2. Define oracle:dba on both clients where numeric gid/uid is the same as on NFS server.

You will have consistent gid/uid situation over nfs.

If you intend to use NFS in your enviroment, make a table of users and groups which you will use on all your servers in same fashion, for instance dba group has GID 105 and oracle has UID 108 on every server.

Or use NFS4 which relaxes that requirement.