Path: utzoo!utgpu!news-server.csri.toronto.edu!rpi!usc!cs.utexas.edu!sun-barr!newstop!eastapps!hinode!geoff
From: geoff@hinode.East.Sun.COM (Geoff Arnold @ Sun BOS - R.H. coast near the top)
Newsgroups: comp.protocols.nfs
Subject: Re: SOSS version 3.2 -- Bigger Buffers
Keywords: NFS DOS SOSS TCP/IP Ethernet
Message-ID: <6221@eastapps.East.Sun.COM>
Date: 20 May 91 00:54:20 GMT
References: <7539@spdcc.SPDCC.COM> <9105180950.AA22237@ucbvax.Berkeley.EDU>
Sender: news@East.Sun.COM
Reply-To: geoff@east.sun.com (Geoff Arnold @ Sun BOS - R.H. coast near the top)
Organization: Sun Microsystems PC-NFS Engineering
Lines: 31

Quoth gtoal@tardis.computer-science.edinburgh.ac.uk (in <9105180950.AA22237@ucbvax.Berkeley.EDU>):
#However, I have a problem: the archimedes isn't a Unix machine (far
#from it), and the mount command doesn't have the option of changing
#block sizes.  This isn't a problem on server->client data transfers,
#as the client asks for an 8K packet and is turned down, with the
#result that in future it asks for smaller and smaller packets
#until it gets one that works.
#
#*But*... this doesn't work in reverse, because any time I try to
#copy a file from the Archimedes client to the server, the server
#crashes - having been sent an 8K block.  I suspect
#that the new code with 1K blocks might do the same - is the fault
#at the packet-driver level rather than soss itself?
#
#I *did* try recompiling soss with a mega-large packet size (9KI think
#i tried) but it didn't help, although it didn't crash - gave a protocol
#error instead.
#
#Any suggestions? I know it's not Soss's problem, but fixing the problem
#in the Client nfs isn't an option :-( [One day manufacturers will
#give their sources out too, if they can get over their embarrassment]

I assume that SOSS is advertising a TSIZE of 1024 in the "statfs"
call, in which case Acorn is violating the spec by sending more than
1K of data. Acorn should DEFINITELY fix this. Are they on the net?

Geoff
-- Geoff Arnold, PC-NFS architect, Sun Microsystems. (geoff@East.Sun.COM)   --
------------------------------------------------------------------------------
--     Sun Microsystems PC Distributed Systems ...                          --
--            ... soon to be a part of SunTech (stay tuned for details)     --