Dogcows Code - chaz/tar/blob - scripts/level-0

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