On 31/10/06, Joachim Schipper <[EMAIL PROTECTED]> wrote:
On Tue, Oct 31, 2006 at 11:06:13AM +0100, ropers wrote:
> On 31/10/06, Mike Spenard <[EMAIL PROTECTED]> wrote:
> >After tar has finished writing to the tape device is there
> >a way to see how large the finished tar on tape is?
>
> Forgive me if this sounds impressively stupid, but would you not just
> use ls(1) for that?
No, tapes are not block devices; only block devices hold filesystems.
(When you think about it, this makes sense; seek times would be
prohibitively high for tapes.)
> >Also, is there a way to monitor the transfer rate to the
> >tape device?
>
> I doubt that there's a trivial way to do that, and I'm not
> knowledgeable enough to really be able to help with any non-trivial
> way to do this.
How about tar czpf / | dd obs=$BIGNUM > /dev/nrst0? More sophisticated
methods are always possible, of course...
I was thinking about something similar but using buffer from the
misc/buffer port somehow instead of dd. I believe that that program
will give you both the total size (in bytes transferred, I'm not
certain this is the same as the size of the achive on the tape as I
don't know anything about tape drives) and the rate of the transfer.
Read the manual.
Cheers,
Andreas
--
Andreas Kahari
Somewhere in the general Cambridge area, UK
