Message-ID: <965737.12090.qm@web111718.mail.gq1.yahoo.com>
Date: Sat, 8 Jan 2011 23:41:28 -0800 (PST)
From: Mahmood Naderan <nt_mahmood@yahoo.com>
Subject: Problem with sharing /home
To: linux-nfs@vger.kernel.org
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Sender: linux-nfs-owner@vger.kernel.org
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Hi,
I have a server (192.168.1.1)?and worker (192.168.1.2)?stations and want to 
share /home which is belong to the server. This is the content of my 
/etc/exports:
/home??????????????? 192.168.1.2(rw,sync,no_root_squash)

Before sharing, the list of users on both stations are:
server: root, mahmood, user1, user2
worker: root, mahmood, user3, user4

As you can see two users are common. Then I opened /etc/fstab on worker and 
commnet the original /home line and added this line:
server:/home? /home? nfs defaults 0 0
?
Then I ran "sudo exportfs -a" on server and "sudo mount -a" on the worker. 
Please look at the output of "ls -l" command on both server and worker:
mahmood@server:home$ ls -l
total 36
drwxr-xr-x 28?user1?????? users??? 4096 2011-01-08 21:49 user1
drwxr-xr-x? 4?user2??????? users??? 4096 2011-01-08 21:55 user2
drwx------? 2 root?????? root??? 16384 2010-10-24 17:23 lost+found
drwxr-xr-x 26 mahmood??? mahmood? 4096 2011-01-09 10:49 mahmood

mahmood@worker:home$ ls -l
total 36
drwxr-xr-x? 4?user3? users??? 4096 2011-01-08 21:55 user1
drwxr-xr-x? 9?user4 users??? 4096 2011-01-08 23:05 user2
drwx------? 2 root??? root??? 16384 2010-10-24 17:23 lost+found
drwxr-xr-x 26 mahmood mahmood? 4096 2011-01-09 10:49 mahmood
drwxrwxrwx? 5 root??? root???? 4096 2011-01-05 21:27 shared

As you can see, the permission of user1 and user2 home direcoties are granted to 
user3 and user4. But since "mahmood" and "root" have separate account on both 
stations, there is no problem with their access. 

?
The effect of this anomaly is that when user1 want to ssh from server to wroker, 
he can not write anything in his home direcotry:
user1@server:~$ mkdir a
user1@server:~$?ssh worker
enter password....
user1@worker:~$ mkdir b
mkdir: cannot create directory `b': Permission denied
user1@worker:~$

How can I fix that?

Thanks,
// Naderan *Mahmood;