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Date:      Tue, 26 Mar 1996 15:39:52 -0800
From:      "Justin T. Gibbs" <gibbs@freefall.freebsd.org>
To:        joerg_wunsch@uriah.heep.sax.de (Joerg Wunsch)
Cc:        jkh@time.cdrom.com (Jordan K. Hubbard), hackers@freefall.freebsd.org, gibbs@freebsd.org
Subject:   Re: Can't read this stupid DAT tape - ARGH! 
Message-ID:  <199603262339.PAA06338@freefall.freebsd.org>
In-Reply-To: Your message of "Wed, 27 Mar 1996 00:07:20 %2B0100." <199603262307.AAA16445@uriah.heep.sax.de> 

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>j@uriah 268% fgrep MAXPHYS /usr/include/machine/*
>/usr/include/machine/param.h:#define MAXPHYS            (64 * 1024)     /* max
> raw I/O transfer size */
>
>I think you gotta bump this one to 256 K, and recompile your world.

Buffers only hold 64k.  How can you read a larger block size?  We have to
provide a way of chaining buffers together to allow such large block sizes.
I proposed buffer chaining to John some time ago, but other things have
been more important.

>-- 
>cheers, J"org
>
>joerg_wunsch@uriah.heep.sax.de -- http://www.sax.de/~joerg/ -- NIC: JW11-RIPE
>Never trust an operating system you don't have sources for. ;-)

--
Justin T. Gibbs
===========================================
  FreeBSD: Turning PCs into workstations
===========================================



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