BackupPC : script de suppression des backups

#!/bin/sh
#
# This script is contributed by Matthias Meyer
# note that if your $Topdir seems to be wrong (because it is empty), the script will ask you
# the new location.
#
# 10/2009 JJK: Modified by Jeffrey J. Kosowsky
#    add --nightly
#    check if user eguals root or backuppc
# 11/2009 MMT: Modified by Matthias Meyer
#    add --remove
#
# 10/2010 MMT: Modified by Matthias Meyer
#    check /etc/backuppc as well as /etc/BackupPC
#
# 07/2012 HB: Modified by Boris HUISGEN
#    fix run_BackupPC_nightly to detect install/bin directories

usage="\
Usage: $0 [-c <client> [-d <backupnumber> -b <before data> -r [-f]] | [-l]] | [-n]

Delete specified client backups.

Options:
-c <client>  - client machine for which the backup was made
-d <number>  - number of Backup which should be deleted
-b <date>    - delete all backups before this date (YYYY-MM-DD)
-r           - remove the entire client
-f           - force to run Backuppc_nightly so the space got free afterwards
-n           - only run Backuppc_nightly
-l           - list the backups which made for <client>
-n           - Just run BackupPC_nightly (even if no backups deleted)
-h           - this help
"
declare -i len        # try "typeset" instead declare if you have problems
declare TopDir LogDir # directories, evaluated by /etc/backuppc/config.pl
declare configDir

function run_BackupPC_nightly ()
{
    installdir=`grep $Conf{InstallDir} $configDir/config.pl | awk '{print $3}'`
    len=${#installdir}-3
    installdir=${installdir:1:len}
    path=$installdir/bin

    if [ ! -e $path/BackupPC_serverMesg ]; then
        path="/usr/share/BackupPC/bin"
    fi

    echo "Running BackupPC_nightly..."
    $path/BackupPC_serverMesg BackupPC_nightly run
    $path/BackupPC_serverMesg log I honestly apologize for the inconvenience
    echo `date "+%Y-%m-%d %T"` BackupPC_deleteBackup BackupPC_nightly politely scheduled via daemon >> $LogDir/LOG
}

# JJK: NOTE NFS shares may only be accessible by 'backuppc' (not even by root if not 'no_root_squash') so run as user 'backuppc'
[ "`id -un`" != "backuppc" -a "`id -un`" != "root" ] && echo "Must be either 'root' or 'backuppc' to run" && exit
[ "`id -un`" != "backuppc" ] && exec su backuppc -s /bin/bash -c "$0 $*"

while test $# -gt 0; do
    case "$1" in
    -c | --client )
        shift
        client=`echo $1 | tr "[:upper:]" "[:lower:]"`
        shift
        ;;

    -b | --before )
        shift
        bDate=$1
        shift
        ;;

    -d | --delete )
        shift
        bNumber=$1
        shift
        ;;

    -r | --remove )
        entire="true"; shift
        ;;

    -f | --force )
        nightly="true"; shift
        ;;

    -n | --nightly )
        nightlyonly="true"; shift
        ;;

    -l | --list )
        list="true"; shift
        ;;

    * | -h | --help)
        echo "$usage"
        exit 0
        ;;
    esac
done

if [ -z $nightlyonly ] && ( [ -z "$client" ] || [ -z $list ] && [ -z $bNumber ] && [ -z $bDate ] && [ -z $entire ] ); then
    echo "$usage"
    exit 0
fi

if [ -e /etc/backuppc/config.pl ]; then
    configDir="/etc/backuppc"
elif [ -e /etc/BackupPC/config.pl ]; then
    configDir="/etc/BackupPC"
else
    echo "BackupPCs config.pl not found"
    exit 1
fi

TopDir=`grep '^\$Conf{TopDir}' $configDir/config.pl | awk '{print $3}'`
len=${#TopDir}-3
TopDir=${TopDir:1:len}

ls $TopDir/pc > /dev/null 2>&1
while [ $? != 0 ]
do
    read -p "examined $TopDir seems wrong. What is TopDir ? " TopDir
    ls $TopDir/pc > /dev/null 2>&1
done

LogDir=`grep '^\$Conf{LogDir}' $configDir/config.pl | awk '{print $3}'`
len=${#LogDir}-3
LogDir=${LogDir:1:len}
if [ ! -e $LogDir/LOG ]; then
    LogDir="$TopDir/log"
fi

if [ ! -z $nightlyonly ]; then
    run_BackupPC_nightly
    exit 0
elif [ ! -z $entire ]; then
    # the entire host should be removed. Therefore we will remove him
    # from the host list as well as his client configuration
    while read CLine
    do
        host=`echo $CLine | awk '{print $1}' | tr "[:upper:]" "[:lower:]"`
        if [ "$host" != "$client" ]; then
            echo "$CLine" >> $configDir/hosts.new
        fi
    done < $configDir/hosts

    chown --reference=$configDir/hosts $configDir/hosts.new
    chmod --reference=$configDir/hosts $configDir/hosts.new
    mv $configDir/hosts.new $configDir/hosts > /dev/null 2>&1
    rm -f $configDir/$client.pl* > /dev/null 2>&1
fi

ls $TopDir/pc/$client > /dev/null 2>&1
if [ $? != 0 ]; then
    echo "$client have no backups"
    exit 1
fi

if [ ! -z $list ]; then
    while read CLine
    do
        BackupNumber=`echo $CLine | awk '{print $1}'`
        BackupType=`echo $CLine | awk '{print $2}'`
        BackupTime=`stat -c "%y" $TopDir/pc/$client/$BackupNumber/backupInfo | awk '{print $1}'`
        echo "BackupNumber $BackupNumber - $BackupType-Backup from $BackupTime"
    done < $TopDir/pc/$client/backups
    exit 0
fi

if [ ! -z $bNumber ] && [ ! -e $TopDir/pc/$client/$bNumber ]; then
    echo "Backup Number $bNumber does not exist for client $client"
    exit 1
fi

if [ -z $entire ] && [ -e $TopDir/pc/$client/backups ]; then
    delete2full="false"
    rm -f $TopDir/pc/$client/backups.new > /dev/null 2>&1
    touch $TopDir/pc/$client/backups.new
    while read CLine
    do
        BackupNumber=`echo $CLine | awk '{print $1}'`
        BackupTime=`stat -c "%y" $TopDir/pc/$client/$BackupNumber/backupInfo | awk '{print $1}'`
        BackupType=`echo $CLine | awk '{print $2}'`
        if [ $BackupType == "full" ]; then
            delete2full="false"
        fi
        if [ "$BackupTime" \< "$bDate" ] || [ $BackupNumber == "$bNumber" ] || [ $delete2full == "true" ]; then
            if [ $BackupType == "full" ]; then
                if [ $delete2full == "false" ]; then
                    delete2full="true"
                else
                    delete2full="false"
                fi
            fi
            bNumber=$BackupNumber
            echo "remove $TopDir/pc/$client/$bNumber"
            rm -fr $TopDir/pc/$client/$bNumber > /dev/null 2>&1
            rm -f $TopDir/pc/$client/XferLOG.$bNumber > /dev/null 2>&1
            rm -f $TopDir/pc/$client/XferLOG.$bNumber.z > /dev/null 2>&1
            echo "`date +\"%Y-%m-%d %T\"` BackupPC_deleteBackup $TopDir/pc/$client/$bNumber deleted" >> $LogDir/LOG
            echo "`date +\"%Y-%m-%d %T\"` BackupPC_deleteBackup remove backup $bNumber" >> $TopDir/pc/$client/LOG.`date +%m%Y`
        fi
        if [ "$BackupNumber" != "$bNumber" ]; then
            echo "$CLine" >> $TopDir/pc/$client/backups.new
        fi
    done < $TopDir/pc/$client/backups

    chown --reference=$TopDir/pc/$client/backups $TopDir/pc/$client/backups.new > /dev/null 2>&1
    chmod --reference=$TopDir/pc/$client/backups $TopDir/pc/$client/backups.new > /dev/null 2>&1
    mv $TopDir/pc/$client/backups.new $TopDir/pc/$client/backups > /dev/null 2>&1
    echo "`date +\"%Y-%m-%d %T\"` BackupPC_deleteBackup $TopDir/pc/$client/backups updated" >> $LogDir/LOG
elif [ ! -z $entire ]; then
    rm -fr $TopDir/pc/$client > /dev/null 2>&1
    echo "`date +\"%Y-%m-%d %T\"` BackupPC_deleteBackup $TopDir/pc/$client entirely removed" >> $LogDir/LOG
fi

if [ ! -z $nightly ]; then
    run_BackupPC_nightly
fi

exit $?

Exemple de suppression de la sauvegarde n°400 du client host1 avec nettoyage du pool :

carl # ./BackupPC_delete -c host1 -d 400 -f