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From: Robert Watson <rwatson@FreeBSD.org>
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To: Antony Mawer <fbsd-fs@mawer.org>
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Cc: Yuri Pankov <yuri.pankov@gmail.com>, developers@freebsd.org,
	Attilio Rao <attilio@freebsd.org>, freebsd-current@freebsd.org,
	freebsd-fs@freebsd.org
Subject: Re: reproducible panic with mount_smbfs
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On Tue, 4 Nov 2008, Antony Mawer wrote:

> This probably also applies to NWFS and netncp as well -- I haven't had a 
> chance to test NWFS in 7.x as of yet, but will hope to do so in the coming 
> months...

Ah, someone who actually uses netncp and nwfs!  I've been trying to keep the 
ipx/spx code alive and working through the MPSAFE network stack work, but I'm 
really not set up to test that, let alone the Netware file system parts.  Let 
us know how it goes.  The netsmb and netncp code is well-structured, but 
designed with pre-SMPng locking primitives and network stack in mind, so will 
need quite a bit of work to pull forwards.  As Attilio has already been 
running into, netsmb has rather intimate knowledge and reliance on some of the 
more obscure behaviors of lockmgr :-).  This is something that will need to be 
fairly high on the list of things to change.  Apple has started doing some of 
this in their fork of our netsmb code, but there's a lot more to do I think.

Robert N M Watson
Computer Laboratory
University of Cambridge