[Dump-users] Linux dump script

[Chris F. <cf...@so...>]

Hi all,
I am trying to write a script to dump all ext2 partitions onto a tape 
drive. However the problem I seem to be having is that the dump command 
I am sending keeps copying the next partitions over the old ones on the 
tape. ie /root gets copied on to tape, than /var gets copied over /root 
than /home gets copied over /var etc. So the only data that is on the 
tape is only the last partition copied to it.

The guts of the script that I am using includes:

mounted_filesys=$(df -k | grep "\/dev\/sd" | awk '{print $6}' | grep -v 
"^/cdrom")
for filesystem in ${mounted_filesys}
do
         mt -f /dev/st0 compression 1
         mt -f /dev/st0 datcompression >>${LOG_FILE} 2>&1
         /sbin/dump -0a -f /dev/nst0 ${filesystem} >>${LOG_FILE} 2>&1
done

The log file indicates that each partition gets backed up. But then when 
I go to restore anything but the last backup I get an I/O ERROR. So I 
presume the data has been copied over.

Does any have any suggestions on how I can go about sorting this problem 
or know of any good scripts for Linux that back up multiple partitions? 
I have had a nose around on the web but so far have not found anything 
that will help.
Thanks in advance.
Chris Freeman