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|
#
# backupninja handler to do incremental backups using
# rsync and hardlinks, based on
#
# http://www.mikerubel.org/computers/rsync_snapshots/
#
# feedback: rhatto at riseup.net | gpl
#
# config file options
# -------------------
#
# [general]
# log = rsync log file
# partition = partition where the backup lives
# fsck = set to 1 if fsck should run on $partition after the backup is made
# read_only = set to 1 if $partition is mounted read-only
# mountpoint = backup partition mountpoint or backup main folder
# backupdir = folder relative do $mountpoint where the backup should be stored
# days = number of backup increments (min = 5)
# lockfile = lockfile to be kept during backup execution
#
# [source]
# include = include folder on backup
# exclude = exclude folder on backup
#
# [services]
# initscripts = absolute path where scripts are located
# service = script name to be stoped at the begining of the backup and started at its end
#
setsection general
getconf log
getconf partition
getconf fsck
getconf read_only
getconf mountpoint
getconf backupdir
getconf rotate
getconf days
getconf lockfile
setsection source
getconf include
getconf exclude
setsection services
getconf initscripts
getconf service
backupdir="$mountpoint/$backupdir"
if [ ! -d "$backupdir" ]; then
error "Backupdir $backupdir does not exist"
exit 1
fi
if [ -z "$days" ]; then
keep="4"
else
keep="`echo $days - 1 | bc -l`"
fi
if [ ! -z "$lockfile" ]; then
touch $lockfile || warning "Could not create lockfile $lockfile"
fi
for path in $exclude; do
EXCLUDES="$EXCLUDES --exclude=$path"
done
if [ ! -z "$service" ]; then
for daemon in $service; do
info "Stopping service $service..."
$initscripts/$service stop
done
fi
function rotate {
# please use an absolute path
if [[ "$2" < 4 ]]; then
error "Rotate: minimum of 4 rotations"
exit 1
fi
if [ -d $1.$2 ]; then
mv $1.$2 $1.tmp
fi
for ((n=`echo "$2 - 1" | bc`; n >= 0; n--)); do
if [ -d $1.$n ]; then
dest=`echo "$n + 1" | bc`
mv $1.$n $1.$dest
touch $1.$dest
fi
done
if [ -d $1.tmp ]; then
mv $1.tmp $1.0
fi
if [ -d $1.1 ]; then
cp -alf $1.1/. $1.0
fi
}
echo "Starting backup at `date`" >> $log
if [ "$read_only" == "1" ] || [ "$read_only" == "yes" ]; then
if [ -d "$mountpoint" ]; then
mount -o remount,rw $mountpoint
if (($?)); then
error "Could not mount $mountpoint"
exit 1
fi
fi
fi
for SECTION in $include; do
if [ ! -d "$backupdir/$SECTION/$SECTION.0" ]; then
mkdir -p $backupdir/$SECTION/$SECTION.0
fi
info "Rotating $backupdir/$SECTION/$SECTION..."
rotate $backupdir/$SECTION/$SECTION $keep
info "Syncing $SECTION on $backupdir/$SECTION/$SECTION.0..."
rsync -av --delete $EXCLUDES /$SECTION/ $backupdir/$SECTION/$SECTION.0/ >> $log
touch $backupdir/$SECTION/$SECTION.0
done
if [ "$read_only" == "1" ] || [ "$read_only" == "yes" ]; then
mount -o remount,ro $mountpoint
fi
if [ "$fsck" == "1" ] || [ "$fsck" == "yes" ]; then
umount $mountpoint
if (($?)); then
warning "Could not umount $mountpoint to run fsck"
else
fsck -v -y $partition >> $log
mount $mountpoint
fi
fi
if [ ! -z "$service" ]; then
for daemon in $service; do
info "Starting service $service..."
$initscripts/$service start
done
fi
if [ ! -z "$lockfile" ]; then
rm lockfile || warning "Could not remove lockfile $lockfile"
fi
echo "Finnishing backup at `date`" >> $log
|
