topic Re: Tape duplication in Operating System - HP-UX

Tape duplication

Ken Smith_2 — Tue, 12 Jun 2001 20:54:57 GMT

I want to make backup copies of my software tapes. They are in 4mm DDS format and one is a bootable tape. I have two 4mm drives connected to my system. What are the commands to do this?

Re: Tape duplication

Marissa Gloria-Ringor — Wed, 13 Jun 2001 01:08:34 GMT

We're using this program though no guarantee, just try it yourself. Pls take note that this is tape to tape copy, so it should be on the same capacity. Good luck

? ./tape_copy ?
This program is supplied and should only be used on the understanding
that there is NO support or liability on the part of Hewlett-Packard.
You should therefore NOT rely on the copied tapes being correct.
You use this at your own risk!
Usage ./tape_copy input_mag_tape output_mag_tape

Re: Tape duplication

James R. Ferguson — Wed, 13 Jun 2001 04:04:31 GMT

Hi Ken:

Try this:

# dd if=/dev/rmt/0m of=/dev/rmt/1m

...JRF...

Re: Tape duplication

Andreas Voss — Wed, 13 Jun 2001 05:49:24 GMT

Hi,

for your bootable tape (i guess you have used Ignite/UX make_tape_recovery) you can use the command

/opt/ignite/bin/copy_boot_tape

(see man 'copy_boot_tape')
to duplicate the tape.

For other tapes you could use the dd command ie:

dd if=/dev/rmt/0m of=/dev/rmt/1m bs=10k

Regards

Re: Tape duplication

Vincenzo Restuccia — Wed, 13 Jun 2001 08:10:34 GMT

A tape created with make_recovery contains two tape "files": a 2KB LIF file and a 10KB tar archive. If you have two tape drives on a system, you can easily duplicate the tapes using two dd commands with a no-rewind-on-close device file for the first command. For example:
dd if=/dev/rmt/0mn of=/dev/rmt/1mn bs=2k dd if=/dev/rmt/0m of=/dev/rmt/1m bs=10k

If you only have one tape drive, and have enough disk space to hold the contents of both tape files, use something like this4:

dd if=/dev/rmt/0mn of=/var/tmp/f1 bs=2k dd if=/dev/rmt/0m of=/var/tmp/f2 bs=10k

(Insert blank tape now)

dd if=/var/tmp/f1 of=/dev/rmt/0mn bs=2k dd if=/var/tmp/f2 of=/dev/rmt/0m bs=10k

Also see the copy_boot_tape (1M) manpage.