Subject: Re: rst0 and st0
To: Manuel Bouyer <email@example.com>
From: Steven M. Bellovin <firstname.lastname@example.org>
Date: 01/30/2001 17:35:14
In message <20010130231526.A318@antioche.eu.org>, Manuel Bouyer writes:
>On Mon, Jan 29, 2001 at 10:54:57PM +0100, email@example.com wrote:
>> i found rst0, nrst0, nst0, st0 for my DAT tape drive
>> first two i understand but what is buffered device for tape?
>All devices are buffered. nst0 and st0 are non-unmounting devices I think.
>Look at st(4).
>> could i newfs and mount it???
>No, this is not possible on sequencial devices.
Back in the mists of time (I mean *way* back), it was possible to mount
block tape devices as read-only file systems. They did have very long
seek times, though, so this wasn't really recommended.... (There were
some DEC tape drives where it was possible to rewrite a block in the
middle of a file, and I think that those could be mounted read-write.)
--Steve Bellovin, http://www.research.att.com/~smb