topic Re: How to copy data from DDS tape to UNIX station in Operating System - HP-UX

How to copy data from DDS tape to UNIX station

Sharanabasappa — Mon, 25 Apr 2011 10:23:46 GMT

Can anybody tell me I want copy some files from DDS tape to UNIX local hard disc?

Thanks in advance
Sharan

Re: How to copy data from DDS tape to UNIX station

Dennis Handly — Mon, 25 Apr 2011 10:40:34 GMT

How was the data written to the tape? ignite, tar, pax, fbackup, dd, etc?

Re: How to copy data from DDS tape to UNIX station

Michael Steele_2 — Mon, 25 Apr 2011 16:30:35 GMT

I'm afraid I have to 2nd Dennis' request. If you're not sure then post what you see written on the tape label.

Re: How to copy data from DDS tape to UNIX station

Peter Nikitka — Mon, 25 Apr 2011 17:01:50 GMT

Hi,
if the format of the data on the tape is unknown, try to extract some data and analyze this header:

dd if=/dev/tape of=contenttest bs=5k count=1
file contenttest

The output of the file command will lead to the writing program, if it is a 'usual' candidate.

Read the man page of this program to get options for reading data it created.

mfG Peter

Re: How to copy data from DDS tape to UNIX station

Sharanabasappa — Tue, 26 Apr 2011 07:36:54 GMT

Thanks for reply...It is TAR type data...
and one more is there that is FSBACKUP..

Re: How to copy data from DDS tape to UNIX station

Dennis Handly — Tue, 26 Apr 2011 08:05:39 GMT

>It is TAR type data.

The opposite of tar is pax or tar:
tar -xf /dev/tape-device
pax -r -f dev/tape-device

>there that is FSBACKUP.

fsbackup or fbackup(1m)? Use frecover(1M).

Re: How to copy data from DDS tape to UNIX station

Michael Steele_2 — Tue, 26 Apr 2011 12:39:39 GMT

First, read the 'tar' table of contents or 'frecover' index to preview your restore and verify the contents of the tape.

This will list every file on the tape without actually restoring.

/usr/sbin/frecover -I /tmp/index -vy -f /dev/rmt/0mn

Here the frecover index writes to the file /tmp/index.

tar -tvf /dev/rmt/0m (0m = yes rewind / 0mn = no rewind *)

Here the tar TOC writes to STDOUT

These are previews of the operation.

When ready

tar -xvf /dev/rmt/0m (* for absolute restore *)

frecover -xvf /dev/rmt/0m (* absolute restore *)

Note: Make sure you know if its a relative or absolute resotre. As you'll overwrite anything in an absolute.

Re: How to copy data from DDS tape to UNIX station

Dennis Handly — Wed, 27 Apr 2011 16:57:21 GMT

>Michael: Make sure you know if it's a relative or absolute restore. As you'll overwrite anything in an absolute.

pax(1) and gnu tar have options to change the paths.