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Date:      Tue, 6 Mar 2001 14:09:34 -0800 (PST)
From:      "Rodney W. Grimes" <freebsd@gndrsh.dnsmgr.net>
To:        sgk@troutmask.apl.washington.edu (Steve Kargl)
Cc:        naddy@mips.inka.de (Christian Weisgerber), freebsd-current@FreeBSD.ORG
Subject:   Re: tape device names and devfs
Message-ID:  <200103062209.OAA20679@gndrsh.dnsmgr.net>
In-Reply-To: <200103062118.f26LI3G11355@troutmask.apl.washington.edu> from Steve Kargl at "Mar 6, 2001 01:18:03 pm"

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> Christian Weisgerber wrote:
> > Steve Kargl <sgk@troutmask.apl.washington.edu> wrote:
> > 
> > I haven't heard any screaming yet.  Besides, this is -CURRENT.
> > devfs has also abandoned symlinks for 'r' disk devices.
> > 
> 
> The "r" in tape device names has traditionally meant "r"ewind.
> The "r" in disk names (such as rda0) meant a "r"aw device.

That is incorrect.  r is raw in both cases.  n is used to
designate non-rewind devices.  Please read mtio(4) and sa(4).

non-raw tape devices don't make since... they aren't random
block addressable devices.

> Raw devices (or block devices) were removed from current.  The
> rewind and non-rewind tape device names were changed under
> devfs from rsa0 and nrsa0 to sa0 and nsa0, (which IMHO
> violates POLA).
> 
> I suspect we'll hear scream when 5.0 is released and early
> adopters start to have their backup scripts die.
> 
> -- 
> Steve
> 
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> 


-- 
Rod Grimes - KD7CAX @ CN85sl - (RWG25)               rgrimes@gndrsh.dnsmgr.net

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