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Monster Media 1993 #2
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os2
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gtak212b.zip
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1992-09-02
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#!/bin/sh
#
# Run this script as root on the machine that has the tape drive, to make a
# level-1 dump containing all files changed since the last full dump.
#
# If you give `now' as an argument, the dump is done immediately.
# Otherwise, it waits until 1am.
#
# You must edit the file `backup-specs' to set the parameters for your site.
if [ ! -w / ]; then
echo The backup must be run as root,
echo or else some files will fail to be dumped.
exit 1
else
false
fi
# Get the values of BACKUP_DIRS and BACKUP_FILES, and other variables.
. ./backup-specs
# Maybe sleep until around specified or default hour.
#
if [ "$1" != "now" ]; then
if [ "$1"x != x ]; then
spec=$1
else
spec=$BACKUP_HOUR
fi
pausetime=`date | awk '{hr=substr($4,1,2);\\
mn=substr($4,4,2);\\
if((hr+0)<spec)\\
print 3600*(spec-hr)-60*mn;\\
else\\
print 3600*(spec+(24-hr))-60*mn; }' spec=$spec`
clear
cat ./dont_touch
sleep $pausetime
fi
# start doing things
here=`pwd`
LOGFILE=log-`date | awk '{print $2 "-" $3 "-" $6}'`-level-1
HOST=`hostname | sed 's/\..*//'`
TAR_PART1="/usr/local/bin/tar -c +multi-volume +one-file-system +block=$BLOCKING +sparse"
#TAR_PART1="/usr/local/bin/tar -c +multi-volume +one-file-system +block=$BLOCKING "
# Make sure the log file did not already exist. Create it.
if [ -f $LOGFILE ] ; then
echo Log file $LOGFILE already exists.
exit 1
else
touch $LOGFILE
fi
mt -f $TAPE_FILE rewind
set $BACKUP_DIRS
while [ $# -ne 0 ] ; do
host=`echo $1 | sed 's/:.*$//'`
fs=`echo $1 | sed 's/^.*://'`
date=`date`
fsname=`echo $1 | sed 's/\//:/g'`
# This filename must be absolute; it is opened on the machine that runs tar.
TAR_PART2="+listed=/etc/tar-backup/temp.level-1"
TAR_PART3="+label='level 1 backup of $fs on $host at $date' -C $fs ."
echo Backing up $1 at $date | tee -a $LOGFILE
echo Last full dump on this filesystem: | tee -a $LOGFILE
if [ $HOST != $host ] ; then
rsh $host "ls -l /etc/tar-backup/$fsname.level-0; \
cp /etc/tar-backup/$fsname.level-0 /etc/tar-backup/temp.level-1" \
2>&1 | tee -a $LOGFILE
else
ls -l /etc/tar-backup/$fsname.level-0 2>&1 | tee -a $LOGFILE
cp /etc/tar-backup/$fsname.level-0 /etc/tar-backup/temp.level-1 2>&1 | tee -a $LOGFILE
fi
# Actually back things up.
if [ $HOST != $host ] ; then
rsh $host $TAR_PART1 -f $HOST:$TAPE_FILE $TAR_PART2 $TAR_PART3 2>&1 | tee -a $LOGFILE
else
# Using `sh -c exec' causes nested quoting and shell substitution
# to be handled here in the same way rsh handles it.
sh -c "exec $TAR_PART1 -f $TAPE_FILE $TAR_PART2 $TAR_PART3" 2>&1 | tee -a $LOGFILE
fi
if [ $? -ne 0 ] ; then
echo Backup of $1 failed. | tee -a $LOGFILE
# I'm assuming that the tar will have written an empty
# file to the tape, otherwise I should do a cat here.
else
if [ $HOST != $host ] ; then
rsh $host mv -f /etc/tar-backup/temp.level-1 /etc/tar-backup/$fsname.level-1 2>&1 | tee -a $LOGFILE
else
mv -f /etc/tar-backup/temp.level-1 /etc/tar-backup/$fsname.level-1 2>&1 | tee -a $LOGFILE
fi
fi
$TAPE_STATUS | tee -a $LOGFILE
sleep 60
shift
done
# Dump any individual files requested.
if [ x != "x$BACKUP_FILES" ] ; then
date=`date`
TAR_PART2="+listed=/etc/tar-backup/temp.level-1"
TAR_PART3="+label='Incremental backup of miscellaneous files at $date'"
echo Backing up miscellaneous files at $date | tee -a $LOGFILE
echo Last full dump of these files: | tee -a $LOGFILE
ls -l /etc/tar-backup/misc.level-0 2>&1 | tee -a $LOGFILE
rm -f /etc/tar-backup/temp.level-1 2>&1 | tee -a $LOGFILE
cp /etc/tar-backup/misc.level-0 /etc/tar-backup/temp.level-1 2>&1 | tee -a $LOGFILE
echo Backing up miscellaneous files at $date | tee -a $LOGFILE
# Using `sh -c exec' causes nested quoting and shell substitution
# to be handled here in the same way rsh handles it.
sh -c "exec $TAR_PART1 -f $TAPE_FILE $TAR_PART2 $TAR_PART3 \
$BACKUP_FILES" 2>&1 | tee -a $LOGFILE
if [ $? -ne 0 ] ; then
echo Backup of miscellaneous files failed. | tee -a $LOGFILE
# I'm assuming that the tar will have written an empty
# file to the tape, otherwise I should do a cat here.
else
mv -f /etc/tar-backup/temp.level-1 /etc/tar-backup/misc.level-1 2>&1 | tee -a $LOGFILE
fi
$TAPE_STATUS | tee -a $LOGFILE
else
echo No miscellaneous files specified | tee -a $LOGFILE
false
fi
mt -f $TAPE_FILE rewind
mt -f $TAPE_FILE offl
echo Sending the dump log to $ADMINISTRATOR
cat $LOGFILE | sed -f logfile.sed > $LOGFILE.tmp
/usr/ucb/mail -s "Results of backup on `date`" $ADMINISTRATOR < $LOGFILE.tmp