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