From: mehta kiran <kiranmehta1981@yahoo.com>
Subject: Re: file :"/var/lib/nfs/rmtab"
Date: Thu, 3 Feb 2005 20:52:56 -0800 (PST)
Message-ID: <20050204045256.38920.qmail@web51603.mail.yahoo.com>
References: <42024B9E.1010102@steeleye.com>
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Cc: James Pearson <james-p@moving-picture.com>,
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To: Paul Clements <paul.clements@steeleye.com>
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Hi , 
         if handle supplied by client is sufficient ,
 then why does the problem given below exists.

1. export filesystem to client.
2. let client allow to mount it.
3. remove all entries from rmtab on server.
4. restart all nfs daemons.
5. Now if client access filesystem , it gets
   permission denied error.Client can access
   filesystem only after remounting it.
6. This show that mountd still uses rmtab to
   check if client had mounted filesystem or not.
   No entry in rmtab for a client means it has not
   mounted filesystem.

thanks,
 --kiran

--- Paul Clements <paul.clements@steeleye.com> wrote:

> mehta kiran wrote:
> 
> > Isn't handle supplied by client
> >           enough to verify clients access to
> >           filesystem.?
> 
> Yes, it should be. That's why in 2.6, the rmtab file
> is no longer relied 
> upon. Instead, there is a special filesystem,
> /proc/fs/nfsd, that allows 
> the kernel to communicate with mountd in order to
> authenticate 
> unrecognized clients automatically.
> 
> --
> Paul
> 
> 
>
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