no header after volume mark

[Rick Garland]

Hi all:

Trying to duplicate a DLT tape that was created with vxdump.

The command I am using is;
dd if=/dev/rmt/c46t10d0BEST bs=1024 of=/dev/rmt/c45t11d0BEST bs=1024

The original tape that was created with vxdump works fine - I can read and restore from it. In doing the dd tape copy it appears to be doing OK. At the end of the process I get 79043+0 records in 79043+0 records out (this looks good to me!). When I try the vxrestore on the new - copied - tape I get the error "no header after volume mark!"

How to make a copy of DLT tape? I have searches the forums and cannot find an instance with this error message. Any ideas?

Many thanks!

[Darren Prior]

Hi Rick,

Take a look at this document in the technical knowledge base: KBRC00001049 - "Using dd(1) to duplicate HP-UX backup tapes"

(You'll need to have your contract linked to your ITRC login.)

regards,

Darren.

[Rick Garland]

Many thanks for the info.

I am hoping I can find some info about doing straight tape-to-tape copy as I do not have the room on disk.

The other option I will try as well is doing the remsh to a system. Lots of posts with this method.

Still - how about tape-to-tape with the original being vxdump?