[TUHS] Re: Unix v7 tape drive question

[KenUnix <ken.unix.guy@gmail.com>]

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Dan,

Thanks, that did the trick.

# dump
     date = Thu Mar  2 09:52:02 2023
dump date = the epoch
dumping /dev/rrp3 to /dev/rmt1
I
II
estimated 24870 tape blocks on 0 tape(s)
III
IV
level 9 dump on Thu Mar  2 09:52:02 2023
DONE
25228 tape blocks on 1 tape(s)

And, I will change dump.c and dumpdir.c to use tm0.

Ken


On Thu, Mar 2, 2023 at 9:40 AM Dan Cross <crossd@gmail.com> wrote:

> On Thu, Mar 2, 2023 at 9:28 AM KenUnix <ken.unix.guy@gmail.com> wrote:
> > I am trying to use the 'dump' program but it references rmt1.
> >
> > My system only has rmt0. I have been unable to find how to
> > create this device. I have looked over the reference material
> > but it only references rmt0.
> >
> > Is there any way to redirect a dump to use rmt0?
> >
> > Any help is appreciated.
>
> I'd start with the man page.
>
> Dump(1M) says that argument `f` causes `dump` to, "Place the dump on
> the next argument file instead of the tape". Did you try using that
> option with `/dev/rmt0`?
>
> Alternatively, I don't see why you couldn't hard-link /dev/rmt1 to
> /dev/rmt0:
>
> # cd /dev
> # ln rmt1 rmt0
>
> Or use `mknod` to create a device file with the same major/minor numbers:
>
> # cd /dev
> # /etc/mknod rmt1 c 12 0
>
> Or even, as a very last resort, edit the source and change the default
> dump device.  It's in /usr/src/cmd/dump.c
>
> Hope that helps!
>
>         - Dan C.
>


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