Re: [ANNOUNCEMENT] Updated: mt-2.0.1-1

[Don Sharp <dwsharp@iee.org>]

Thanks Corinna. Your message is extremely helpful.
But help!! how do I unmount the tapes?

$ umount /dev/st0
umount: /dev/st0: No such file or directory

$ mount
\\.\tape0 on /dev/st0 type system (binmode)
\\.\tape0 on /dev/nst0 type system (binmode)
\\.\tape1 on /dev/nrmt0 type system (binmode)
\\.\tape1 on /dev/rmt0 type system (binmode)

Cheers

Don Sharp

Corinna Vinschen wrote:
> 
> On Fri, Nov 16, 2001 at 11:38:47AM +0000, Don Sharp wrote:
> > (/dev/tape1 in the new regime?) but the tape rewound after stopping the
> > tape with a ^C and then issuing
> 
> No, the naming convention for the raw devices is the following:
> 
> major minor    POSIX filename  NT filename
> ----- -----    --------------  -------------------------
> 18       0     /dev/st0        \device\tape0 (rewind)
> 18       1     /dev/st1        \device\tape1 (rewind)
> ...
> 18     128     /dev/nst0       \device\tape0 (norewind)
> 18     129     /dev/nst1       \device\tape1 (norewind)
> ...
> 
> 17       0     /dev/fd0        \device\floppy0
> 17       1     /dev/fd1        \device\floppy1
> ...
> 
> 17      16     /dev/scd0       \device\cdrom0
> 17      17     /dev/scd0       \device\cdrom1
> ...
> 
> 17      32     /dev/sda        \device\harddisk0\partition0
> 17      33     /dev/sda1       \device\harddisk0\partition1
> ...
> 17      47     /dev/sda15      \device\harddisk0\partition15
> 
> 17      48     /dev/sdb        \device\harddisk1\partition0
> 17      33     /dev/sdb1       \device\harddisk1\partition1
> ...
> 17     208     /dev/sdl        \device\harddisk11\partition0
> ...
> 17     223     /dev/sdl15      \device\harddisk11\partition15
> 
> The following are needed to maintain backward compatibility with
> the old Win32 partitioning scheme on W2K/XP.
> 
> 17     224     from mount tab  \\.\A:
> ...
> 17     250     from mount tab  \\.\Z:
> 
> The above naming convention is used close to the way the SCSI
> devices are named on Linux.
> 
> /dev/tape is just used as a default name for a tape device in
> the (more or less) Linux compatible header file mtio.h.  That
> results (even on Linux) to mt using /dev/tape as default tape
> device name.  Therefore, most Linux systems have /dev/tape
> a symlink to the main tape device, typically /dev/st0 if a
> SCSI tape is connected.
> 
> > mt -f /dev/nrmt0 status 2
> >
> > Positioning using (//./tape1 mounted as) /dev/nrmt0 didn't seem to leave
> > the tape positioned.
> >
> > Should I abandon the use of mounted tape devices?
> 
> At least for now.  Use the default /dev/st1 and /dev/nst1.  That
> effect wasn't planned, though.  I will investigate it when I have
> some spare time.  Probably I have dropped the `leading character n'
> test by mistake.
> 
> Thanks for the heads up,
> Corinna
> 
> --
> Corinna Vinschen                  Please, send mails regarding Cygwin to
> Cygwin Developer                                mailto:cygwin@cygwin.com
> Red Hat, Inc.
> 
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