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