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 elif ( mount $BACKUPPART -o rw &> /dev/null ) then
  64    echo "done."
  65 else
  66    echo "failure!"
  67    echo " There were problems remounting $BACKUPPART in read-write mode!"
  68    echo "Aborting ${BACKUP} System Dump Backup."
  69    echo "Aborted."
  70    echo "-------------------------------------------------------------------------------"
  71    exit 1
  72 fi
  73
  74 echo -n "Checking backup partition for correct dir structure ... "
  75 if [ -d $BACKUPPART/$BACKUPDIR -a -w $BACKUPPART/$BACKUPDIR ]; then
  76    echo "done."
  77
  78    echo -n "Checking backup partition for available space ... "
  79    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}'`
  80    SAVAILFREE=`df --block-size=1048576 | grep -Fe $BACKUPPART | awk '{printf "%6.0f\n", $4}'`
  81    SAVAILDEL=`du -s --block-size=1048576 $BACKUPPART/$BACKUPDIR/. | awk '{printf "%6.0f\n", $1}'`
  82    SAVAIL=`expr $SAVAILFREE + $SAVAILDEL`
  83
  84    if [ `expr $SAVAIL - $SREQ` -gt "0" ]; then
  85       echo "done."
  86       echo "Available: $SAVAIL MB Required: $SREQ MB."
  87    else
  88       echo "not enough space!"
  89       echo "There is not enough space left in $BACKUPPART for the backup!"
  90       echo "Available: $SAVAIL MB Required: $SREQ MB."
  91       echo -n "Remounting backup partition read-only ... "
  92       if ( mount $BACKUPPART -o remount,ro &> /dev/null ) then
  93          echo "done."
  94       elif ( mount $BACKUPPART -o ro &> /dev/null ) then
  95          echo "done."
  96       else
  97          echo "failure!"
  98          echo "There were problems remounting $BACKUPPART in read-only mode!"
  99          echo "Aborting ${BACKUP} System Dump Backup."
 100          echo "Aborted."
 101          echo "-------------------------------------------------------------------------------"
 102          exit 1
 103       fi
 104       echo "Aborting ${BACKUP} System Dump Backup."
 105       echo "Aborted."
 106       echo "-------------------------------------------------------------------------------"
 107       exit 1
 108    fi
 109
 110    echo -n "Deleting old files ... "
 111    if [ `ls -la $BACKUPPART/$BACKUPDIR/ | wc -l` -gt "3" ]; then
 112       rm -f $BACKUPPART/$BACKUPDIR/* &> /dev/null
 113       echo "done."
 114    else
 115       echo "no old files to delete."
 116    fi
 117
 118    echo "Dumping filesystems ... "
 119    for FS in $FSTODUMP
 120    do
 121       if [ "$FS" = "/" ]; then
 122          FSNAME="root"
 123       else
 124          FSNAME=`echo $FS | tr / _ | cut -b 2-`
 125       fi
 126       sync
 127       echo -n "Starting dump of $FSNAME ( $FS ) ... "
 128       if ( dump -$DLEVEL $UPDATEDDATE -z -M -s 27306 -f $BACKUPPART/$BACKUPDIR/$FSNAME.$BTYPE. $FS &> $BACKUPPART/$BACKUPDIR/$FSNAME.log ) then
 129          echo "done."
 130       else
 131          echo "problems!"
 132          echo "There were problems with the dump of $FSNAME ( $FS )."
 133          echo "Check log file at $BACKUPPART/$BACKUPDIR/$FSNAME.log.gz"
 134          echo "Also check log archive file $DUMPLOGARCH."
 135       fi
 136       cat $BACKUPPART/$BACKUPDIR/$FSNAME.log |gzip >> $DUMPLOGARCH
 137       echo "-------------------------------------------------------------------------------" |gzip >> $DUMPLOGARCH
 138    done
 139
 140    echo -n "Setting ownership and permissions of dump files ... "
 141    chmod $DUMPFILESMODE $BACKUPPART/$BACKUPDIR/* $DUMPLOGARCH &> /dev/null
 142    chown $DUMPFILESOWN $BACKUPPART/$BACKUPDIR/* $DUMPLOGARCH &> /dev/null
 143    echo "done."
 144
 145    echo -n "Compressing dump log files ... "
 146    gzip $BACKUPPART/$BACKUPDIR/*.log &> /dev/null
 147    echo "done."
 148    sync
 149
 150 else
 151    echo "problems!"
 152    echo "There are problems with the directory structure."
 153    echo "Check directory: $BACKUPPART/$BACKUPDIR"
 154    echo -n "Remounting backup partition read-only ... "
 155    if ( mount $BACKUPPART -o remount,ro &> /dev/null ) then
 156       echo "done."
 157    else
 158       echo "failure!"
 159       echo "There were problems remounting $BACKUPPART in read-only mode!"
 160       echo "Aborting ${BACKUP} System Dump Backup."
 161       echo "Aborted."
 162       echo "-------------------------------------------------------------------------------"
 163       exit 1
 164    fi
 165    echo "Aborting ${BACKUP} System Dump Backup."
 166    echo "Aborted."
 167    echo "-------------------------------------------------------------------------------"
 168    exit 1
 169 fi
 170
 171 echo -n "Remounting backup partition read-only ... "
 172 if ( mount $BACKUPPART -o remount,ro &> /dev/null ) then
 173    echo "done."
 174 else
 175    echo "failure!"
 176    echo "There were problems remounting $BACKUPPART in read-only mode!"
 177    echo "Aborting ${BACKUP} System Dump Backup."
 178    echo "Aborted."
 179    echo "-------------------------------------------------------------------------------"
 180    exit 1
 181 fi
 182
 183 echo "### End of ${BACKUP} System Dump Backup ###"
 184 echo "Done."
 185 echo "-------------------------------------------------------------------------------"