*BSD News Article 38063


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From: lm@slovax.engr.sgi.com (Larry McVoy)
Newsgroups: comp.unix.bsd
Subject: Re: ffs & sunos?
Date: 18 Nov 1994 23:01:22 GMT
Organization: Silicon Graphics Inc., Mountain View, CA
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Umm, I was the last person to do any significant work in Sun's file
system, UFS, (you can get the paper on it by mailing to
archives@slovax.engr.sgi.com) and I think someone has forgotten to tell
you that Sun's file system *is* BSD's FFS, converted to use vnodes (the
right way; the BSD way is a half way point that Sun passed back around
SunOS 3.5) and modified to run at the disk speed for sequential I/O (I
did that part).

Putting BSD's FFS in SunOS would do nothing but slow SunOS down.

On the other hand, you could have a lot of fun with the stacking 
file systems - see usr/src/miscfs/union_fs for example.

Paul Southworth (pauls@locust.cic.net) wrote:

: Has anyone tried playing around with implementing the 4.4BSD ffs under
: SunOS 4.x?  Any problems inherent in trying it apart from needing
: kernel sources, perhaps? (ie, is this a ridiculous idea?)

: Although I know and love NetBSD, I am still interested in playing with
: performance-enhancing additions to SunOS...

: --
: Paul Southworth
: CICNet Systems Support
: pauls@cic.net

--
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Larry McVoy			(415) 390-1804			 lm@sgi.com