examples/cron_dump_to_disk/backup

   1 #!/bin/bash
   2 #
   3 # This script will make a simple backup of the most critical partitions,
   4 # using the "dump" facility, into the backup partition. It will stop the
   5 # webserver, and recurse the sites directories making a tar mini-backup of
   6 # the database dirs. It will the restart the webserver, and start the
   7 # "dump" backup.
   8 #
   9
  10 if [ "$2" = "nodumpdate" ]; then
  11    UPDATEDDATE=""
  12 else
  13    UPDATEDDATE="-u"
  14 fi
  15
  16 if [ "$1" = "full" ]; then
  17    DLEVEL="0"
  18    BTYPE="full"
  19    BACKUP="Full"
  20 elif [ "$1" = "inc" ]; then
  21    DLEVEL="1"
  22    BTYPE="inc"
  23    BACKUP="Incremental"
  24 else
  25    echo "Usage: $0 full|inc [nodumpdate]"
  26    exit 1
  27 fi
  28
  29
  30 #
  31 # Configuration Parameters
  32 #
  33
  34 BACKUPPART=${BACKUPPART:-"/backup"}
  35 BACKUPDIR=${BACKUPDIR:-"current"}
  36 DUMPLOGARCH="$BACKUPPART/backup.dump.log.gz"
  37 FSTODUMP=${FSTODUMP:-/ /var /home /mnt/hdb1 /usr}
  38 DUMPFILESMODE="0644"
  39 DUMPFILESOWN="root.root"
  40
  41 #
  42 # Start
  43 #
  44
  45 echo
  46 echo "#####################################################################"
  47 echo "Starting ${BACKUP} backup."
  48 echo "#####################################################################"
  49 echo
  50
  51
  52 #
  53 #  Make system backup
  54 #
  55
  56 echo "### ${BACKUP} System Dump Backup ###"
  57 echo "Using backup partition: $BACKUPPART"
  58 echo "Filesystems to dump: $FSTODUMP"
  59
  60 echo -n "Remounting backup partition read-write ... "
  61 if ( mount $BACKUPPART -o remount,rw &> /dev/null ) then
  62    echo "done."
  63 else
  64    echo "failure!"
  65    echo " There were problems remounting $BACKUPPART in read-write mode!"
  66    echo "Aborting ${BACKUP} System Dump Backup."
  67    echo "Aborted."
  68    echo "-------------------------------------------------------------------------------"
  69    exit 1
  70 fi
  71
  72 echo -n "Checking backup partition for correct dir structure ... "
  73 if [ -d $BACKUPPART/$BACKUPDIR -a -w $BACKUPPART/$BACKUPDIR ]; then
  74    echo "done."
  75
  76    echo -n "Checking backup partition for available space ... "
  77    SREQ=`for i in $FSTODUMP;do dump -$DLEVEL -S $i 2> /dev/null;done|awk '{x=x+$1/1048576} END {printf "%6.0f\n", x}'`
  78    SAVAILFREE=`df --block-size=1048576 |grep -Ew $BACKUPPART|awk '{printf "%6.0f\n", $4}'`
  79    SAVAILDEL=`du -s --block-size=1048576 $BACKUPPART/$BACKUPDIR/. |awk '{printf "%6.0f\n", $1}'`
  80    SAVAIL=`expr $SAVAILFREE + $SAVAILDEL`
  81
  82    if [ `expr $SAVAIL - $SREQ` -gt "0" ]; then
  83       echo "done."
  84       echo "Available: $SAVAIL MB Required: $SREQ MB."
  85    else
  86       echo "no enough space!"
  87       echo "There is not enough space left in $BACKUPPART for the backup!"
  88       echo "Available: $SAVAIL MB Required: $SREQ MB."
  89       echo -n "Remounting backup partition read-only ... "
  90       if ( mount $BACKUPPART -o remount,ro &> /dev/null ) then
  91          echo "done."
  92       else
  93          echo "failure!"
  94          echo "There were problems remounting $BACKUPPART in read-only mode!"
  95          echo "Aborting ${BACKUP} System Dump Backup."
  96          echo "Aborted."
  97          echo "-------------------------------------------------------------------------------"
  98          exit 1
  99       fi
 100       echo "Aborting ${BACKUP} System Dump Backup."
 101       echo "Aborted."
 102       echo "-------------------------------------------------------------------------------"
 103       exit 1
 104    fi
 105
 106    echo -n "Deleting old files ... "
 107    if [ `ls -la $BACKUPPART/$BACKUPDIR/|wc -l` -gt "3" ]; then
 108       rm -f $BACKUPPART/$BACKUPDIR/* &> /dev/null
 109       echo "done."
 110    else
 111       echo "no old files to delete."
 112    fi
 113
 114    echo "Dumping filesystems ... "
 115    for FS in $FSTODUMP
 116    do
 117       if [ "$FS" = "/" ]; then
 118          FSNAME="root"
 119       else
 120          FSNAME=`echo $FS|tr / _|cut -b 2-`
 121       fi
 122       sync
 123       echo -n "Starting dump of $FSNAME ( $FS ) ... "
 124       if ( dump -$DLEVEL $UPDATEDDATE -z -M -s 27306 -f $BACKUPPART/$BACKUPDIR/$FSNAME.$BTYPE. $FS &> $BACKUPPART/$BACKUPDIR/$FSNAME.log ) then
 125          echo "done."
 126       else
 127          echo "problems!"
 128          echo "There where problems with the dump of $FSNAME ( $FS )."
 129          echo "Check logfile $BACKUPPART/$BACKUPDIR/$FSNAME.log for more info"
 130          echo "Also check log archive file $DUMPLOGARCH."
 131       fi
 132       cat $BACKUPPART/$BACKUPDIR/$FSNAME.log |gzip >> $DUMPLOGARCH
 133       echo "-------------------------------------------------------------------------------" |gzip >> $DUMPLOGARCH
 134    done
 135
 136    echo -n "Setting ownership and permissions of dump files ... "
 137    chmod $DUMPFILESMODE $BACKUPPART/$BACKUPDIR/* $DUMPLOGARCH &> /dev/null
 138    chown $DUMPFILESOWN $BACKUPPART/$BACKUPDIR/* $DUMPLOGARCH &> /dev/null
 139    echo "done."
 140
 141    echo -n "Compressing dump log files ... "
 142    gzip $BACKUPPART/$BACKUPDIR/*.log &> /dev/null
 143    echo "done."
 144    sync
 145
 146 else
 147    echo "problems!"
 148    echo "There are problems with the directory structure."
 149    echo "Check dirs: $BACKUPPART/$BACKUPDIR"
 150    echo -n "Remounting backup partition read-only ... "
 151    if ( mount $BACKUPPART -o remount,ro &> /dev/null ) then
 152       echo "done."
 153    else
 154       echo "failure!"
 155       echo "There were problems remounting $BACKUPPART in read-only mode!"
 156       echo "Aborting ${BACKUP} System Dump Backup."
 157       echo "Aborted."
 158       echo "-------------------------------------------------------------------------------"
 159       exit 1
 160    fi
 161    echo "Aborting ${BACKUP} System Dump Backup."
 162    echo "Aborted."
 163    echo "-------------------------------------------------------------------------------"
 164    exit 1
 165 fi
 166
 167 echo -n "Remounting backup partition read-only ... "
 168 if ( mount $BACKUPPART -o remount,ro &> /dev/null ) then
 169    echo "done."
 170 else
 171    echo "failure!"
 172    echo "There were problems remounting $BACKUPPART in read-only mode!"
 173    echo "Aborting ${BACKUP} System Dump Backup."
 174    echo "Aborted."
 175    echo "-------------------------------------------------------------------------------"
 176    exit 1
 177 fi
 178
 179 echo "### End of ${BACKUP} System Dump Backup ###"
 180 echo "Done."
 181 echo "-------------------------------------------------------------------------------"