For the low cost of 30 minutes of re-learning bash, I wrote a script that splits Tranzoa monthly backup trees into two DVD-Rs. It has sanity checking, runs in low memory and low hard drive environments, and is extremely simple to use:
scott@tara:~/rsync$ [0] ./burn.sh month-tree ... Please insert Disk 2 and press and key to continue. [Enter] ...
I have no idea how I would have gotten this done in Windows.
scott@tara:~/rsync$ [0] cat burn.sh
#!/bin/sh
clean_temp_files ()
{
# Clean up after ourselves.
rm -f bsh.d1.path bsh.d2.path bsh.dall.path bsh.dmerge.path
rm -f bsh.d1.pathlist bsh.d2.pathlist
}
# Generate the pathlists.
echo “$0: Generating pathlists...”
burndir=‘basename $1’
./d1-gen $burndir > bsh.d1.path
./d2-gen $burndir > bsh.d2.path
./dall-gen $burndir | sort > bsh.dall.path
# Sanity check to ensure all directories are obtain.
echo “$0: Performing pathlist sanity check.”
cat bsh.d1.path bsh.d2.path | sort > bsh.dmerge.path
if ! (diff -q bsh.dall.path bsh.dmerge.path); then
echo “$0: Mismatched path lists. Aborting!”
clean_temp_files
exit
fi
# Print the sizes of both images.
echo “$0: Disk 1 (Most):” ‘cat bsh.d1.path | xargs du -Hsc | grep total’
echo “$0: Disk 2 (Biggies):” ‘cat bsh.d2.path | xargs du -Hsc | grep total’
# Process the pathlist files with grafts.
echo “$0: Generating graft lists...”
cat bsh.d1.path | xargs -i echo {}={} > bsh.d1.pathlist
cat bsh.d2.path | xargs -i echo {}={} > bsh.d2.pathlist
# Perform dry-runs to check it will all work.
echo “$0: Performing dry-runs...”
volid=‘date -f $burndir/date.txt +%F’
cddev=“/dev/hdd”
growcmd=“growisofs -dvd-compat -Z $cddev”
mkisofsopts=“-r -J -joliet-long -graft-points -q -V $volid”
if ! ($growcmd -dry-run ${mkisofsopts}-1 -path-list bsh.d1.pathlist); then
echo “$0: Disk 1 dry-run failed. Aborting!”
clean_temp_files
exit
fi
if ! ($growcmd -dry-run ${mkisofsopts}-2 -path-list bsh.d2.pathlist); then
echo “$0: Disk 2 dry-run failed. Aborting!”
clean_temp_files
exit
fi
# Start the burn cycle!
echo “$0: Starting burn cycle.”
if ! ($growcmd ${mkisofsopts}-1 -path-list bsh.d1.pathlist); then
echo “$0: Disk 1 burn failed. Aborting!”
clean_temp_files
exit
fi
eject $cddev
read -p “Please insert Disk 2 and press any key to continue.”
if ! ($growcmd ${mkisofsopts}-2 -path-list bsh.d2.pathlist); then
echo “$0: Disk 2 burn failed. Aborting!”
clean_temp_files
exit
fi
eject $cddev
clean_temp_files
scott@tara:~/rsync$ [0] cat d1-gen
#!/bin/sh
find $1 -maxdepth 2 \( \( -path “$1/backup/mozilla” -o -path “$1/backup/private” -o -path “$1/backup/tzpalm” \) -prune \) -o \( -path $1/backup -o -path “$1/backup/*” -prune -print \) -o \( -path “$1/*” -prune -print \)
scott@tara:~/rsync$ [0] cat d2-gen
#!/bin/sh
find $1 -maxdepth 2 \( -path “$1/backup/mozilla” -o -path “$1/backup/private” -o -path “$1/backup/tzpalm” \) -prune -a -print
scott@tara:~/rsync$ [0] cat dall-gen
#!/bin/sh
find $1 -maxdepth 2 \( -path $1/backup -o -path “$1/backup/*” -prune -print \) -o \( -path “$1/*” -prune -print \)
scott@tara:~/rsync$ [0] 