Dear All, I am fairly new to burning disks under linux. I have grabbed the script at the end of this message from http://patrick.newedorf.net/backup It works very well if I burn a single session to a DVD+RW (i.e. a full backup), however, if I try and use incremental and create a multisession disk I cannot mount the disk again after it has been written to a second time My system is # uname -a Linux *.*.*.*.* 2.4.21-20.EL #1 Sat Sep 18 18:37:36 PDT 2004 x86_64 x86_64 x86_64 GNU/Linux # mkisofs --version mkisofs 2.01a32 (--) # growisofs --version growisofs 5.3, front-ending to mkisofs 2.01a32 (--) When I try and mount the multisession disk i get ]# mount /dev/scd0 /mnt/cdrom/ mount: block device /dev/scd0 is write-protected, mounting read-only mount: Not a directory /mnt/cdrom is definitely a directory, I ahve also tried # mount -o loop /dev/scd0 /mnt/cdrom/ mount: Not a directory and # mount -o session=1 /dev/scd0 /mnt/cdrom/ mount: block device /dev/scd0 is write-protected, mounting read-only mount: Not a directory
Does anyone have any ideas please, I'd really like to get this working so that I can do incremental backups of my system Thanks Martyn #!/bin/bash # # Name: backup2dvd.sh # Date: 21/01/05 # Purpose: backup latest snapshot directory (/.snaphots/hourly.0/) to dvd # # Taken from: http://patrick.newedorf.net/backup # An working example for a script that does # either a full or incremental backup and # can verify the backup. It requires growisofs # and either star or a tar that supports d/--diff # and -X (GNU tar is okay). # # Author: Patrick Ohly, [EMAIL PROTECTED] # License: do whatever you like with it... # set -e # # Edit this script to customize it: # # directories to be backed up - without leading # slash, but relative to / dirs=".snapshots/hourly.0/export" # the DVD writer dev=/dev/scd0 # intermediate mount point for backup mnt=/mnt/cdrom # intermediate file with exclude patterns (not deleted, # to allow inspection) exclude=/tmp/backup.exclude # a logfile of backup/verify process log=/tmp/backup.log # the image will have one subdirectory with this # prefix followed by... prefix=backup- # ... the current date/time in this format current="$prefix`date +%Y-%m-%d-%H:%M`" # file exclusion patterns, see mkisofs -exclude-list cat >$exclude <<EOF *~ EOF # other mkisofs options - note that -J is not used # here because it caused mkisofs to abort due to # filename collisions. It might be useful to read # the backup under Windows. -D is used to preserve # the directory structure, even if that requires # breaking the ISO 9660 standard. mkisofsopts="-R -D" case "$1" in incremental) mode=-M mount $dev $mnt root="-root $current -old-root `cd $mnt && ls -d $prefix* | tail -1`" umount $mnt ;; full) mode=-Z root="-root $current" ;; verify) mount $dev $mnt # choose the tar command that better suits you... cmd="(cd $mnt/`cd $mnt && ls -d $prefix* | tail -1` && tar cf - *) | (cd / && tar df - -X $exclude $dirs ) 2>&1 | tee $log" # cmd="(cd $mnt/`cd $mnt && ls -d $prefix* | tail -1` && star -c -f - *) | (cd / && star -diff diffopts=perm,type,uid,gid,size,data,rdev,symlink,mtime,ctime -f - -V `sed -e 's/\(.*\)/pat=\1/' $exclude` $dirs ) 2>&1 | tee $log" echo $cmd set +e eval $cmd res=$? umount $mnt exit $res ;; *) echo "usage: $0 full|incremental|verify" exit 1 ;; esac cd / cmd="growisofs $mode $dev $root -quiet $mkisofsopts -exclude-list $exclude -graft-points `for i in $dirs; do echo $i=$i; done` 2>&1 | tee $ log" echo $cmd eval $cmd exit $?
