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From: Gerrit =?ISO-8859-1?Q?K=FChn?= <gerrit@pmp.uni-hannover.de>
To: Willem Jan Withagen <wjw@digiware.nl>
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Cc: stable@freebsd.org, Jack Vogel <jfvogel@gmail.com>,
	Jeremy Chadwick <freebsd@jdc.parodius.com>
Subject: Re: mbuf leakage with nfs/zfs?
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On Fri, 26 Feb 2010 23:12:39 +0100 Willem Jan Withagen <wjw@digiware.nl>
wrote about Re: mbuf leakage with nfs/zfs?:

WJW> > DB>  I'll have to do some packet snooping to check if it's TCP or
WJW> > DB> UDP nfs traffic, since some of the clients are Linux ...

WJW> > I have Linux clients, too. Some use tcp, some udp.

WJW> I have Linux and FreeBSD clients running. The build system runs on 
WJW> Linux. All Linux's are UDP....

Another shot in the dark:
After upgrading the server, all my Linux clients hang with "stale nfs
dir/file handle/whatever". I was not able to umount them (not even
forcefully). I had to use either lazy forceful umount (-fl) or reboot. Some
of these clients are still hanging around, because they are physically
hard to access (clean room installs etc.). Maybe these clients still try to
establish connections that eat up the buffers and never come back?


cu
  Gerrit