Subject: Re: Problems with TCP-based NFS mounts hanging
To: Paul J. Lavoie <>
From: Greg Wohletz <greg@duke.CS.UNLV.EDU>
List: current-users
Date: 06/26/1997 12:09:00
>I was wondering if anyone has been using TCP mounts under NetBSD, and having a 
>problem with the mount occasionally hanging (nfs server: not responding) in 
>perpetuity, even though other mounts to the same machine and the particular 
>mount still working on other systems. If anyone has any ideas on how to track 
>this down, or a proposed solution, I would love to hear about it - this is a
>minor disappointment.
>This is under NetBSD 1.2 & current on i386. The problem had been noted under 
>FreeBSD 2.2.2 as well. The NFS server was tried on another NetBSD box (current 
>and 1.2), as well as a Network Appliance server, so it would seem to be 
>something with the client code...
>Thanks in advance.
>Paul J. Lavoie		(212) 510-3029
>ILX Systems, Inc.	111 Fulton St		New York, NY  10038

Yep, I've seen this.  Also I have found one major disadvantage to tcp
mounts is that they don't deal with nfs server reboots, if the nfs
server goes down and comes back up a new tcp stream is not established and
the client basically has to be rebooted in order to continue using the
nfs filesystem.

I've also seen random hangs over tcp mounts even when the fileserver didn't