mt on NT

mt on NT

[Stephen Hansen]

I have installed cygwin on a couple of Win2k machines, and everything
works great.  But, I have had a couple of problems installing on NT.
The first was man, which I fixed according to instructions in the FAQ
(Sometime I would like to know why ash gets loaded sometimes and not
others.)  The other problem is with mt.

When I try to manipulate the tape with

mt -f /dev/nt0 status

it responds

mt: '(null)' is not a tape device.

When I try

mt -f /dev/nt0 setblk 0

it responds

mt: '0' is not a tape device.

It's as if mt is looking at the fifth field for the device.

Any ideas?


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Re: mt on NT

[Corinna Vinschen]

On Thu, Jul 12, 2001 at 02:09:45PM -0500, Stephen Hansen wrote:
> I have installed cygwin on a couple of Win2k machines, and everything
> works great.  But, I have had a couple of problems installing on NT.
> The first was man, which I fixed according to instructions in the FAQ
> (Sometime I would like to know why ash gets loaded sometimes and not
> others.)  The other problem is with mt.
> 
> When I try to manipulate the tape with
> 
> mt -f /dev/nt0 status
> 
> it responds
> 
> mt: '(null)' is not a tape device.
> 
> When I try
> 
> mt -f /dev/nt0 setblk 0
> 
> it responds
> 
> mt: '0' is not a tape device.
> 
> It's as if mt is looking at the fifth field for the device.
> 
> Any ideas?

Did you install a mount point as described in the online user guide?

http://cygwin.com/cygwin-ug-net/using-specialnames.html#AEN786

Corinna

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Re: mt on NT

[Stephen Hansen]

I did, but I had used backslashes to describe the windows path, which were
interpretted incorrectly.  But I still have a problem.  If I mount exactly
as described and try to rewind I get

TapeGetPos: 6: The handle is invalid.

If I try to setblk I get

mt: operation 'setblk' not support on 'dev/nt0'

Corinna Vinschen wrote:

> On Thu, Jul 12, 2001 at 02:09:45PM -0500, Stephen Hansen wrote:
> > I have installed cygwin on a couple of Win2k machines, and everything
> > works great.  But, I have had a couple of problems installing on NT.
> > The first was man, which I fixed according to instructions in the FAQ
> > (Sometime I would like to know why ash gets loaded sometimes and not
> > others.)  The other problem is with mt.
> >
> > When I try to manipulate the tape with
> >
> > mt -f /dev/nt0 status
> >
> > it responds
> >
> > mt: '(null)' is not a tape device.
> >
> > When I try
> >
> > mt -f /dev/nt0 setblk 0
> >
> > it responds
> >
> > mt: '0' is not a tape device.
> >
> > It's as if mt is looking at the fifth field for the device.
> >
> > Any ideas?
>
> Did you install a mount point as described in the online user guide?
>
> http://cygwin.com/cygwin-ug-net/using-specialnames.html#AEN786
>
> Corinna
>
> --
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Re: mt on NT

[Corinna Vinschen]

On Mon, Jul 16, 2001 at 09:57:32AM -0500, Stephen Hansen wrote:
> I did, but I had used backslashes to describe the windows path, which were
> interpretted incorrectly.  But I still have a problem.  If I mount exactly
> as described and try to rewind I get
> 
> TapeGetPos: 6: The handle is invalid.
> 
> If I try to setblk I get
> 
> mt: operation 'setblk' not support on 'dev/nt0'

Could you please send the output of `mount'?
And did you try a `mt status 2'? Could you send the output (if any), too?

Corinna

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Re: mt on NT

[Stephen Hansen]

I have to type the output because I'm working on a secure system.  Here it is:

$ mount
C:\cygwin\bin on /usr/bin type system (binmode)
C:\cygwin\lib on /usr/lib type system (binmode)
C:\cygwin on / type system (binmode)
\\.\tape0 on /dev/t0 type user (binmode)
\\.\tape0 on /dev/nt0 type user (binmode)
c: on /cygdrive/c type user (binmode, noumount)
e: on /cygdrive/e type user (binmode, noumount)
f: on /cygdrive/f type user (binmode, noumount)
g: on /cygdrive/g type user (binmode, noumount)
i: on /cygdrive/i type user (binmode, noumount)
j: on /cygdrive/j type user (binmode, noumount)
k: on /cygdrive/k type user (binmode, noumount)
l: on /cygdrive/l type user (binmode, noumount)

Adminisrator@TRC-EVAN NT ~
$ mt status 2
mt: '2' is no tape device



Corinna Vinschen wrote:

> On Mon, Jul 16, 2001 at 09:57:32AM -0500, Stephen Hansen wrote:
> > I did, but I had used backslashes to describe the windows path, which were
> > interpretted incorrectly.  But I still have a problem.  If I mount exactly
> > as described and try to rewind I get
> >
> > TapeGetPos: 6: The handle is invalid.
> >
> > If I try to setblk I get
> >
> > mt: operation 'setblk' not support on 'dev/nt0'
>
> Could you please send the output of `mount'?
> And did you try a `mt status 2'? Could you send the output (if any), too?
>
> Corinna
>
> --
> Corinna Vinschen                  Please, send mails regarding Cygwin to
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>
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Re: mt on NT

[Corinna Vinschen]

On Mon, Jul 16, 2001 at 11:24:31AM -0500, Stephen Hansen wrote:
> I have to type the output because I'm working on a secure system.  Here it is:
> 
> $ mount
> C:\cygwin\bin on /usr/bin type system (binmode)
> C:\cygwin\lib on /usr/lib type system (binmode)
> C:\cygwin on / type system (binmode)
> \\.\tape0 on /dev/t0 type user (binmode)
> \\.\tape0 on /dev/nt0 type user (binmode)
> c: on /cygdrive/c type user (binmode, noumount)
> e: on /cygdrive/e type user (binmode, noumount)
> f: on /cygdrive/f type user (binmode, noumount)
> g: on /cygdrive/g type user (binmode, noumount)
> i: on /cygdrive/i type user (binmode, noumount)
> j: on /cygdrive/j type user (binmode, noumount)
> k: on /cygdrive/k type user (binmode, noumount)
> l: on /cygdrive/l type user (binmode, noumount)
> 
> Adminisrator@TRC-EVAN NT ~
> $ mt status 2
> mt: '2' is no tape device

mt -f /dev/nt0 status 2?

Corinna

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Re: mt on NT

[Corinna Vinschen]

On Mon, Jul 16, 2001 at 06:35:22PM +0200, Corinna Vinschen wrote:
> On Mon, Jul 16, 2001 at 11:24:31AM -0500, Stephen Hansen wrote:
> > I have to type the output because I'm working on a secure system.  Here it is:
> > 
> > $ mount
> > C:\cygwin\bin on /usr/bin type system (binmode)
> > C:\cygwin\lib on /usr/lib type system (binmode)
> > C:\cygwin on / type system (binmode)
> > \\.\tape0 on /dev/t0 type user (binmode)
> > \\.\tape0 on /dev/nt0 type user (binmode)
> > c: on /cygdrive/c type user (binmode, noumount)
> > e: on /cygdrive/e type user (binmode, noumount)
> > f: on /cygdrive/f type user (binmode, noumount)
> > g: on /cygdrive/g type user (binmode, noumount)
> > i: on /cygdrive/i type user (binmode, noumount)
> > j: on /cygdrive/j type user (binmode, noumount)
> > k: on /cygdrive/k type user (binmode, noumount)
> > l: on /cygdrive/l type user (binmode, noumount)
> > 
> > Adminisrator@TRC-EVAN NT ~
> > $ mt status 2
> > mt: '2' is no tape device
> 
> mt -f /dev/nt0 status 2?

or better

  mt -f /dev/nt0 status 3

Corinna

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Re: mt on NT

[Stephen Hansen]

$ mt -f /dev/nt0 status 2 (and 3)
TapeStatus: 6: The handle is invalid
mt: Error reporting tape status

Corinna Vinschen wrote:

> On Mon, Jul 16, 2001 at 06:35:22PM +0200, Corinna Vinschen wrote:
> > On Mon, Jul 16, 2001 at 11:24:31AM -0500, Stephen Hansen wrote:
> > > I have to type the output because I'm working on a secure system.  Here it is:
> > >
> > > $ mount
> > > C:\cygwin\bin on /usr/bin type system (binmode)
> > > C:\cygwin\lib on /usr/lib type system (binmode)
> > > C:\cygwin on / type system (binmode)
> > > \\.\tape0 on /dev/t0 type user (binmode)
> > > \\.\tape0 on /dev/nt0 type user (binmode)
> > > c: on /cygdrive/c type user (binmode, noumount)
> > > e: on /cygdrive/e type user (binmode, noumount)
> > > f: on /cygdrive/f type user (binmode, noumount)
> > > g: on /cygdrive/g type user (binmode, noumount)
> > > i: on /cygdrive/i type user (binmode, noumount)
> > > j: on /cygdrive/j type user (binmode, noumount)
> > > k: on /cygdrive/k type user (binmode, noumount)
> > > l: on /cygdrive/l type user (binmode, noumount)
> > >
> > > Adminisrator@TRC-EVAN NT ~
> > > $ mt status 2
> > > mt: '2' is no tape device
> >
> > mt -f /dev/nt0 status 2?
>
> or better
>
>   mt -f /dev/nt0 status 3
>
> Corinna
>
> --
> Corinna Vinschen                  Please, send mails regarding Cygwin to
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Re: mt on NT

[Corinna Vinschen]

On Mon, Jul 16, 2001 at 01:30:32PM -0500, Stephen Hansen wrote:
> $ mt -f /dev/nt0 status 2 (and 3)
> TapeStatus: 6: The handle is invalid
> mt: Error reporting tape status

Hmm, weird. I have no idea. The thing is, it could open "\\.\tape0'
so the handle should be ok. I even tried renaming my tape drive to
/dev/[n]t0 either for testing. I have no problems.

Could you compile a debug version of mt and debug it?

Oh, btw, did you succeed in reading or writing on the tape using
Cygwin tar/cpio/dd/something?

Did you use the same user account when creating the mount point
and when calling mt? If you're using a ssh/rsh/telnet session
to connect to the box, do you see the mount points for the tapes
there, too?

Corinna

> 
> Corinna Vinschen wrote:
> 
> > On Mon, Jul 16, 2001 at 06:35:22PM +0200, Corinna Vinschen wrote:
> > > On Mon, Jul 16, 2001 at 11:24:31AM -0500, Stephen Hansen wrote:
> > > > I have to type the output because I'm working on a secure system.  Here it is:
> > > >
> > > > $ mount
> > > > C:\cygwin\bin on /usr/bin type system (binmode)
> > > > C:\cygwin\lib on /usr/lib type system (binmode)
> > > > C:\cygwin on / type system (binmode)
> > > > \\.\tape0 on /dev/t0 type user (binmode)
> > > > \\.\tape0 on /dev/nt0 type user (binmode)
> > > > c: on /cygdrive/c type user (binmode, noumount)
> > > > e: on /cygdrive/e type user (binmode, noumount)
> > > > f: on /cygdrive/f type user (binmode, noumount)
> > > > g: on /cygdrive/g type user (binmode, noumount)
> > > > i: on /cygdrive/i type user (binmode, noumount)
> > > > j: on /cygdrive/j type user (binmode, noumount)
> > > > k: on /cygdrive/k type user (binmode, noumount)
> > > > l: on /cygdrive/l type user (binmode, noumount)
> > > >
> > > > Adminisrator@TRC-EVAN NT ~
> > > > $ mt status 2
> > > > mt: '2' is no tape device
> > >
> > > mt -f /dev/nt0 status 2?
> >
> > or better
> >
> >   mt -f /dev/nt0 status 3

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Re: mt on NT

[Stephen Hansen]

No, I can't tar or dd either.

Could my problem have something to do with my tape drive being on a second SCSI
controller?

Corinna Vinschen wrote:

> On Mon, Jul 16, 2001 at 01:30:32PM -0500, Stephen Hansen wrote:
> > $ mt -f /dev/nt0 status 2 (and 3)
> > TapeStatus: 6: The handle is invalid
> > mt: Error reporting tape status
>
> Hmm, weird. I have no idea. The thing is, it could open "\\.\tape0'
> so the handle should be ok. I even tried renaming my tape drive to
> /dev/[n]t0 either for testing. I have no problems.
>
> Could you compile a debug version of mt and debug it?
>
> Oh, btw, did you succeed in reading or writing on the tape using
> Cygwin tar/cpio/dd/something?
>
> Did you use the same user account when creating the mount point
> and when calling mt? If you're using a ssh/rsh/telnet session
> to connect to the box, do you see the mount points for the tapes
> there, too?
>
> Corinna
>
> >
> > Corinna Vinschen wrote:
> >
> > > On Mon, Jul 16, 2001 at 06:35:22PM +0200, Corinna Vinschen wrote:
> > > > On Mon, Jul 16, 2001 at 11:24:31AM -0500, Stephen Hansen wrote:
> > > > > I have to type the output because I'm working on a secure system.  Here it is:
> > > > >
> > > > > $ mount
> > > > > C:\cygwin\bin on /usr/bin type system (binmode)
> > > > > C:\cygwin\lib on /usr/lib type system (binmode)
> > > > > C:\cygwin on / type system (binmode)
> > > > > \\.\tape0 on /dev/t0 type user (binmode)
> > > > > \\.\tape0 on /dev/nt0 type user (binmode)
> > > > > c: on /cygdrive/c type user (binmode, noumount)
> > > > > e: on /cygdrive/e type user (binmode, noumount)
> > > > > f: on /cygdrive/f type user (binmode, noumount)
> > > > > g: on /cygdrive/g type user (binmode, noumount)
> > > > > i: on /cygdrive/i type user (binmode, noumount)
> > > > > j: on /cygdrive/j type user (binmode, noumount)
> > > > > k: on /cygdrive/k type user (binmode, noumount)
> > > > > l: on /cygdrive/l type user (binmode, noumount)
> > > > >
> > > > > Adminisrator@TRC-EVAN NT ~
> > > > > $ mt status 2
> > > > > mt: '2' is no tape device
> > > >
> > > > mt -f /dev/nt0 status 2?
> > >
> > > or better
> > >
> > >   mt -f /dev/nt0 status 3
>
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Re: mt on NT

[Corinna Vinschen]

On Tue, Jul 17, 2001 at 12:47:25PM -0500, Stephen Hansen wrote:
> No, I can't tar or dd either.

Which error message?

> Could my problem have something to do with my tape drive being on a second SCSI
> controller?

Unlikely. Excuse if that sounds dumb but did you actually test to access
the tape drive from NT? Is it really installed under NT?

And:

> > Did you use the same user account when creating the mount point
> > and when calling mt? If you're using a ssh/rsh/telnet session
> > to connect to the box, do you see the mount points for the tapes
> > there, too?

Corinna

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Re: mt on NT

[Stephen Hansen]

Good instincts.  The tape was being used by Retrospect for backups, so I assumed NT
knew about it just fine.  But when I went to the Tape Devices control panel, the
first thing it did was ask to load a driver.  Now everything is fine.  Thanks.

Corinna Vinschen wrote:

> On Tue, Jul 17, 2001 at 12:47:25PM -0500, Stephen Hansen wrote:
> > No, I can't tar or dd either.
>
> Which error message?
>
> > Could my problem have something to do with my tape drive being on a second SCSI
> > controller?
>
> Unlikely. Excuse if that sounds dumb but did you actually test to access
> the tape drive from NT? Is it really installed under NT?
>
> And:
>
> > > Did you use the same user account when creating the mount point
> > > and when calling mt? If you're using a ssh/rsh/telnet session
> > > to connect to the box, do you see the mount points for the tapes
> > > there, too?
>
> Corinna
>
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