Dogcows Code - chaz/tar/blob - scripts/level-1

   1 #!/bin/sh
   2 #
   3 # Run this script as root on the machine that has the tape drive, to make a
   4 # level-1 dump containing all files changed since the last full dump.
   5 #
   6 # If you give `now' as an argument, the dump is done immediately.
   7 # Otherwise, it waits until 1am.
   8 #
   9 # You must edit the file `backup-specs' to set the parameters for your site.
  10
  11 if [ ! -w / ]; then
  12    echo The backup must be run as root,
  13    echo or else some files will fail to be dumped.
  14    exit 1
  15 else
  16    false
  17 fi
  18
  19 # Get the values of BACKUP_DIRS and BACKUP_FILES, and other variables.
  20 . ./backup-specs
  21
  22 # Maybe sleep until around specified or default hour.
  23 #
  24 if [ "$1" != "now" ]; then
  25    if [ "$1"x != x ]; then
  26       spec=$1
  27    else
  28       spec=$BACKUP_HOUR
  29    fi
  30    pausetime=`date | awk '{hr=substr($4,1,2);\\
  31       mn=substr($4,4,2);\\
  32       if((hr+0)<spec+0)\\
  33          print 3600*(spec-hr)-60*mn;\\
  34       else\\
  35          print 3600*(spec+(24-hr))-60*mn; }' spec=$spec`
  36    clear
  37    cat ./dont_touch
  38    sleep $pausetime
  39 fi
  40
  41 # start doing things
  42
  43 here=`pwd`
  44 LOGFILE=log-`date | awk '{print $2 "-" $3 "-" $6}'`-level-1
  45 HOST=`hostname | sed 's/\..*//'`
  46 TAR_PART1="/usr/local/bin/tar -c --multi-volume --one-file-system --block=$BLOCKING --sparse --volno-file=$VOLNO_FILE"
  47 #TAR_PART1="/usr/local/bin/tar -c --multi-volume --one-file-system --block=$BLOCKING "
  48
  49 # Make sure the log file did not already exist.  Create it.
  50
  51 if [ -f $LOGFILE ] ; then
  52    echo Log file $LOGFILE already exists.
  53    exit 1
  54 else
  55    touch $LOGFILE
  56 fi
  57
  58 mt -f $TAPE_FILE rewind
  59 rm $VOLNO_FILE
  60
  61 set $BACKUP_DIRS
  62 while [ $# -ne 0 ] ; do
  63    host=`echo $1 | sed 's/:.*$//'`
  64    fs=`echo $1 | sed 's/^.*://'`
  65    date=`date`
  66    fsname=`echo $1 | sed 's/\//:/g'`
  67
  68 # This filename must be absolute; it is opened on the machine that runs tar.
  69    TAR_PART2="--listed=/etc/tar-backup/temp.level-1"
  70    TAR_PART3="--label='level 1 backup of $fs on $host at $date' -C $fs ."
  71
  72    echo Backing up $1 at $date | tee -a $LOGFILE
  73    echo Last full dump on this filesystem: | tee -a $LOGFILE
  74
  75    if [ $HOST != $host ] ; then
  76      rsh $host "ls -l /etc/tar-backup/$fsname.level-0; \
  77         cp /etc/tar-backup/$fsname.level-0 /etc/tar-backup/temp.level-1" \
  78         2>&1 | tee -a $LOGFILE
  79    else
  80      ls -l /etc/tar-backup/$fsname.level-0 2>&1 | tee -a $LOGFILE
  81      cp /etc/tar-backup/$fsname.level-0 /etc/tar-backup/temp.level-1 2>&1 | tee -a $LOGFILE
  82    fi
  83
  84    # Actually back things up.
  85
  86    if [ $HOST != $host ] ; then
  87       rsh $host $TAR_PART1 -f $HOST:$TAPE_FILE $TAR_PART2 $TAR_PART3 2>&1 | tee -a $LOGFILE
  88    else
  89 # Using `sh -c exec' causes nested quoting and shell substitution
  90 # to be handled here in the same way rsh handles it.
  91       sh -c "exec $TAR_PART1 -f $TAPE_FILE $TAR_PART2 $TAR_PART3" 2>&1 | tee -a $LOGFILE
  92    fi
  93    if [ $? -ne 0 ] ; then
  94       echo Backup of $1 failed. | tee -a $LOGFILE
  95       # I'm assuming that the tar will have written an empty
  96       # file to the tape, otherwise I should do a cat here.
  97    else
  98       if [ $HOST != $host ] ; then
  99         rsh $host mv -f /etc/tar-backup/temp.level-1 /etc/tar-backup/$fsname.level-1 2>&1 | tee -a $LOGFILE
 100       else
 101         mv -f /etc/tar-backup/temp.level-1 /etc/tar-backup/$fsname.level-1 2>&1 | tee -a $LOGFILE
 102       fi
 103    fi
 104    $TAPE_STATUS  | tee -a $LOGFILE
 105    sleep 60
 106    shift
 107 done
 108
 109 # Dump any individual files requested.
 110
 111 if [ x != "x$BACKUP_FILES" ] ; then
 112    date=`date`
 113    TAR_PART2="--listed=/etc/tar-backup/temp.level-1"
 114    TAR_PART3="--label='Incremental backup of miscellaneous files at $date'"
 115
 116    echo Backing up miscellaneous files at $date | tee -a $LOGFILE
 117    echo Last full dump of these files: | tee -a $LOGFILE
 118    ls -l /etc/tar-backup/misc.level-0 2>&1 | tee -a $LOGFILE
 119
 120    rm -f /etc/tar-backup/temp.level-1 2>&1 | tee -a $LOGFILE
 121    cp /etc/tar-backup/misc.level-0 /etc/tar-backup/temp.level-1 2>&1 | tee -a $LOGFILE
 122
 123    echo Backing up miscellaneous files at $date | tee -a $LOGFILE
 124 # Using `sh -c exec' causes nested quoting and shell substitution
 125 # to be handled here in the same way rsh handles it.
 126    sh -c "exec $TAR_PART1 -f $TAPE_FILE $TAR_PART2 $TAR_PART3 \
 127     $BACKUP_FILES" 2>&1 | tee -a $LOGFILE
 128    if [ $? -ne 0 ] ; then
 129      echo Backup of miscellaneous files failed. | tee -a $LOGFILE
 130      # I'm assuming that the tar will have written an empty
 131      # file to the tape, otherwise I should do a cat here.
 132    else
 133      mv -f /etc/tar-backup/temp.level-1 /etc/tar-backup/misc.level-1 2>&1 | tee -a $LOGFILE
 134    fi
 135    $TAPE_STATUS | tee -a $LOGFILE
 136 else
 137    echo No miscellaneous files specified | tee -a $LOGFILE
 138    false
 139 fi
 140
 141 mt -f $TAPE_FILE rewind
 142 mt -f $TAPE_FILE offl
 143
 144 echo Sending the dump log to $ADMINISTRATOR
 145 cat $LOGFILE | sed -f logfile.sed > $LOGFILE.tmp
 146 /usr/ucb/mail -s "Results of backup on `date`" $ADMINISTRATOR < $LOGFILE.tmp