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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 $mountpoint where the backup should be stored
# days = number of backup increments (min = 5)
# lockfile = lockfile to be kept during backup execution
#
# [source]
# include = include folder on backup
# exclude = exclude folder on backup
# from = local or remote
# ssh = ssh command line (remote only)
# rsync = rsync command line
# exclude_vserver = vserver-name (valid only if vservers = yes on backupninja.conf)
#
# [services]
# initscripts = absolute path where scripts are located
# service = script name to be stoped at the begining of the backup and started at its end
#
# You dont need to manually specify vservers using "include = /vservers".
# They are automatically backuped if vserver is set to "yes" on you backupninja.conf.
#
setsection general
getconf log /var/log/backupninja-rub.log
getconf partition
getconf fsck
getconf read_only
getconf mountpoint
getconf backupdir
getconf rotate
getconf days
getconf lockfile
setsection source
getconf from local
getconf rsync "rsync -av --delete"
getconf ssh ssh
getconf user
getconf host
getconf include
getconf exclude
getconf exclude_vserver
setsection services
getconf initscripts
getconf service
backupdir="$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 $daemon..."
$initscripts/$daemon 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 $mountpoint"
exit 1
fi
fi
fi
if [ "$vservers_are_available" == "yes" ]; then
# sane permission on backup
mkdir -p $backupdir/$VROOTDIR
chmod 000 $backupdir/$VROOTDIR
for candidate in `ls $VROOTDIR`; do
found_excluded_vserver="0"
if [ "$candidate" != "lost+found" ]; then
for excluded_vserver in $exclude_vserver; do
if [ "$excluded_vserver" == "$candidate" ]; then
found_excluded_vserver="1"
break
fi
done
if [ "$found_excluded_vserver" == "0" ]; then
include="$include $VROOTDIR/$candidate"
fi
fi
done
fi
for SECTION in $include; do
section="`basename $SECTION`"
if [ ! -d "$backupdir/$SECTION/$section.0" ]; then
mkdir -p $backupdir/$SECTION/$section.0
fi
info "Rotating $backupdir/$SECTION/$section..."
echo "Rotating $backupdir/$SECTION/$section..." >> $log
rotate $backupdir/$SECTION/$section $keep
info "Syncing $SECTION on $backupdir/$SECTION/$section.0..."
if [ "$from" == "local" ]; then
debug $rsync $EXCLUDES /$SECTION/ $backupdir/$SECTION/$section.0/
$rsync $EXCLUDES /$SECTION/ $backupdir/$SECTION/$section.0/ >> $log
if [ "$?" != "0" ]; then
warning "Rsync error when trying to transfer $SECTION"
fi
elif [ "$from" == "remote" ]; then
if [ -z "$user" ] || [ -z "$host" ]; then
error "Config file error: either user or host was not specified"
exit 1
else
debug $rsync $EXCLUDES -e "$ssh" $user@$host:/$SECTION/ $backupdir/$SECTION/$section.0
$rsync $EXCLUDES -e "$ssh" $user@$host:/$SECTION/ $backupdir/$SECTION/$section.0 >> $log
if [ "$?" != "0" ]; then
warning "Rsync error when trying to transfer $SECTION"
fi
fi
else
error "Invalid source $from"
exit 1
fi
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 $daemon..."
$initscripts/$daemon start
done
fi
if [ ! -z "$lockfile" ]; then
rm $lockfile || warning "Could not remove lockfile $lockfile"
fi
echo "Finnishing backup at `date`" >> $log
|
