Re: VOLHDR or something

"Zoran Ljubisic" <[email protected]> wrote:

> star -c f=/dev/st0 VOLHDR=Test .
>
> How can I read VOLHDR from tape?
> I don't want to extract nothing but a VOLHDR.

This script "finds" the file mark position on tape asuming that
the volhdr is follows a "hostname:directory" rule:


/*--------------------------------------------------------------------------*/
#!/bin/sh
#
# Remove all files created by us..
#
trap "rm -f /tmp/sdd.$$; exit" 0 1 2 15

BLOCKSIZE=256k

TAPE=/dev/rmt/0cbn
TAPE=/dev/null
TAPE=/dev/tape
#TAPE=/dev/null

HOST=mouse.berlios.de
TUSER=tape

RTAPE=${TUSER}@${HOST}:${TAPE}

MT="smt -f $RTAPE"

usage() {
	echo "Usage: findba \"hostname:directory\""
	exit 1
}

if [ $# -lt 1 ]; then
	usage
fi

if [ .$BASH != . ]; then 
	echo() { 
	builtin echo -e "$@" 
	} 
fi 

$MT -wready nop
$MT rewind
$MT status
I=0

while true; do
	echo "Tape File # $I	---->\c"
	sdd if= $RTAPE bs=$BLOCKSIZE count=1 of=/tmp/sdd.$$ 2> /dev/null
	if [ ! -s /tmp/sdd.$$ ]; then
		echo EOF
		echo "Pattern not found"
		exit
	fi
	head=`star -tv f=/tmp/sdd.$$ 2>/dev/null | match -- '--Volume Header--'`
	echo "$head"
	echo "$head" | match -s " $1 --Volume Header--"
	if [ $? -eq 0 ]; then
		echo "Pattern found"
		$MT bsr 1
		$MT sta
		exit
	fi

	$MT fsf
	I=`expr $I + 1`
done
/*--------------------------------------------------------------------------*/

Jörg

-- 
 EMail:[email protected] (home) Jörg Schilling D-13353 Berlin
       [email protected]		(uni)  
       [email protected]	(work) Blog: http://schily.blogspot.com/
 URL:  http://cdrecord.berlios.de/old/private/ ftp://ftp.berlios.de/pub/schily