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Date:      Fri, 20 Nov 1998 15:28:01 +0100 (CET)
From:      Jan Conrad <conrad@dirac.physik.uni-bonn.de>
To:        Doug White <dwhite@resnet.uoregon.edu>
Cc:        freebsd-questions@FreeBSD.ORG
Subject:   Re: Inter FreeBSD-227 nfs mounts at boottime fail!
Message-ID:  <Pine.BSF.4.05.9811201502200.307-300000@merlin.physik.uni-bonn.de>
In-Reply-To: <Pine.BSF.4.03.9811170912120.6774-100000@resnet.uoregon.edu>

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Hi again,

On Tue, 17 Nov 1998, Doug White wrote:

> On Tue, 17 Nov 1998, Jan Conrad wrote:
> 
> > > > I am running FreeBSD-2.2.7 on six of my machines, where the standard
> > > > client machine has the following fstab (excerpt)
> > > > 
> > > > /nilles/share@dirac /nilles/share nfs rw,bg,soft,nodev        0 0
> > > > /nilles/home@dirac  /nilles/home  nfs rw,bg,soft,nosuid,nodev 0 0
> > > > /nilles/osf@mach    /nilles/osf   nfs rw,bg,soft,nodev        0 0
> > > 
 
> ...
> 
> > The FreeBSD nfs mounts are still delayed about a minute or so...
> 
> Try running tcpdump then try to mount your filesystems and see what's
> going on.  Perhaps the remote machine isn't allowing mounts from you?

Well - I did the tcpdump. The keypoint seems to be that the server (dirac)
also mounts a filesystem of the client. When one unmounts that filesystem
before shutting down the client the problems at boottime dissappear
(however it's important to have that filesystem mounted!!)

As one can see from the (attached) 2nd tcpdump output, the mount of the
client (merlin) fails, because the server in turn answers with a getattr
while nfsd is not running at the time of the mount in /etc/rc. However, if
the filesystem exported by the client is not mounted on the server (1st
output), the server answers correctly.

To me this seems to be a problem of FreeBSD's implementation of NFS as the
problem did not appear on other UNIXes (it's nothing but a standard
crossmount - I did a lot of these in the days of Ultrix 3 ;-)

best regards
	Jan

-- 
Physikalisches Institut der Universitaet Bonn
Nussallee 12
D-53115 Bonn
GERMANY

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