+#
+# 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
+# lot of enhancements grabbed from "rsnap" handler by paulv at bikkel.org
+#
+# Config file options
+# -------------------
+#
+# [general]
+# log = rsync log file
+# partition = partition where the backup lives
+# fscheck = 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
+# enable_mv_timestamp_bug = set to "yes" if your system isnt handling timestamps correctly
+# tmp = temp folder
+#
+# [source]
+# from = local or remote
+# testconnect = when "yes", test the connection for a remote source before backup
+# include = include folder on backup
+# exclude = exclude folder on backup
+# ssh = ssh command line (remote only)
+# rsync = rsync program
+# rsync_options = rsync command options
+# exclude_vserver = vserver-name (valid only if vservers = yes on backupninja.conf)
+# numericids = when set to 1, use numeric ids instead of user/group mappings on rsync
+# compress = if set to 1, compress data on rsync (remote source only)
+# bandwidthlimit = set a badnwidth limit in kbps (remote source only)
+# remote_rsync = remove rsync program (remote source only)
+#
+# [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 can also specify some system comands if you don't want the default system values:
+#
+# [system]
+# rm = rm command
+# cp = cp command
+# touch = touch command
+# mv = mv command
+# fsck = fsck command
+#
+# You dont need to manually specify vservers using "include = /vservers".
+# They are automatically backuped if vserver is set to "yes" on you backupninja.conf.
+#
+
+# config file evaluation
+
+setsection system
+getconf rm rm
+getconf cp cp
+getconf touch touch
+getconf mv mv
+getconf fsck fsck
+
+setsection general
+getconf log /var/log/backupninja-rsync.log
+getconf partition
+getconf fscheck
+getconf read_only
+getconf mountpoint
+getconf backupdir
+getconf rotate
+getconf days
+getconf lockfile
+getconf nicelevel 0
+getconf enable_mv_timestamp_bug no
+getconf tmp /tmp
+
+setsection source
+getconf from local
+getconf testconnect no
+getconf rsync $RSYNC
+getconf rsync_options "-av --delete"
+getconf ssh ssh
+getconf user
+getconf host
+getconf include
+getconf exclude
+getconf exclude_vserver
+getconf numericids 0
+getconf compress 0
+getconf bandwidthlimit
+getconf remote_rsync rsync
+
+setsection services
+getconf initscripts
+getconf service
+
+# function definitions
+
+function rotate {
+
+ if [[ "$2" -lt 4 ]]; then
+ error "Rotate: minimum of 4 rotations"
+ exit 1
+ fi
+
+ if [ -d $1.$2 ]; then
+ $nice $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`
+ $nice $mv /$1.$n /$1.$dest
+ $touch /$1.$dest
+ fi
+ done
+
+ if [ -d $1.tmp ]; then
+ $nice $mv /$1.tmp /$1.0
+ fi
+
+ if [ -d $1.1 ]; then
+ $nice $cp -alf /$1.1/. /$1.0
+ fi
+
+}
+
+function move_files {
+
+ ref=$tmp/makesnapshot-mymv-$$;
+ $touch -r $1 $ref;
+ $mv $1 $2;
+ $touch -r $ref $2;
+ $rm $ref;
+
+}
+
+backupdir="$mountpoint/$backupdir"
+
+# does $backupdir exists?
+
+if [ ! -d "$backupdir" ]; then
+ error "Backupdir $backupdir does not exist"
+ exit 1
+fi
+
+# setup number of increments
+
+if [ -z "$days" ]; then
+ keep="4"
+else
+ keep="`echo $days - 1 | bc -l`"
+fi
+
+# lockfile setup
+
+if [ ! -z "$lockfile" ]; then
+ $touch $lockfile || warning "Could not create lockfile $lockfile"
+fi
+
+# nicelevel setup
+
+if [ ! -z "$nicelevel" ]; then
+ nice="nice -n $nicelevel"
+else
+ nice=""
+fi
+
+# connection test
+
+if [ "$from" == "remote" ] && [ "$testconnect" == "yes" ]; then
+ debug "$ssh -o PasswordAuthentication=no $user@$host 'echo -n 1'"
+ result=`ssh -o PasswordAuthentication=no $user@$host 'echo -n 1'`
+ if [ "$result" != "1" ]; then
+ fatal "Can't connect to $host as $user."
+ else
+ debug "Connected to $srchost successfully"
+ fi
+fi
+
+# rsync options for local sources
+
+if [ "$from" == "local" ]; then
+
+ rsync_local_options="$rsync_options"
+
+ if [ ! -z "$numericids" ]; then
+ rsync_local_options="$rsync_local_options --numeric-ids "
+ fi
+
+fi
+
+# rsync options for remote sources
+
+if [ "$from" == "remote" ]; then
+
+ rsync_remote_options="$rsync_options --rsync-path=$remote_rsync"
+
+ if [ "$compress" == "1" ]; then
+ rsync_remote_options="$rsync_remote_options --compress"
+ fi
+
+ if [ ! -z "$bandwidthlimit" ]; then
+ rsync_remote_options="$rsync_remote_options --bwlimit=$bandwidthlimit"
+ fi
+
+ if [ ! -z "$numericids" ]; then
+ rsync_remote_options="$rsync_remote_options --numeric-ids"
+ fi
+
+fi
+
+# set mv procedure
+
+if [ $enable_mv_timestamp_bug == "yes" ]; then
+ mv=move_files
+fi
+
+# set excludes
+
+for path in $exclude; do
+ EXCLUDES="$EXCLUDES --exclude=$path"
+done
+
+# stop services
+
+if [ ! -z "$service" ]; then
+ for daemon in $service; do
+ info "Stopping service $daemon..."
+ $initscripts/$daemon stop
+ done
+fi
+
+echo "Starting backup at `date`" >> $log
+
+# mount backup destination folder as read-write
+
+if [ "$read_only" == "1" ] || [ "$read_only" == "yes" ]; then
+ if [ -d "$mountpoint" ]; then
+ mount -o remount,rw $mountpoint
+ if (($?)); then
+ error "Could not mount $mountpoint"
+ exit 1
+ fi
+ fi
+fi
+
+# add vservers to included folders
+
+if [ "$vservers_are_available" == "yes" ]; then
+
+ # sane permission on backup
+ mkdir -p $backupdir/$VROOTDIR
+ chmod 000 $backupdir/$VROOTDIR
+
+ for candidate in $found_vservers; do
+ candidate="`basename $candidate`"
+ found_excluded_vserver="0"
+ 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
+ done
+fi
+
+# the backup procedure
+
+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 $rsync_local_options $EXCLUDES /$SECTION/ $backupdir/$SECTION/$section.0/
+ $nice $rsync $rsync_local_options $EXCLUDES /$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 $nice $rsync $rsync_remote_options $EXCLUDES -e "$ssh" $user@$host:/$SECTION/ $backupdir/$SECTION/$section.0
+ $nice $rsync $rsync_remote_options $EXCLUDES -e "$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/$section.0
+
+done
+
+# remount backup destination as read-only
+
+if [ "$read_only" == "1" ] || [ "$read_only" == "yes" ]; then
+ mount -o remount,ro $mountpoint
+fi
+
+# check partition for errors
+
+if [ "$fscheck" == "1" ] || [ "$fscheck" == "yes" ]; then
+ umount $mountpoint
+ if (($?)); then
+ warning "Could not umount $mountpoint to run fsck"
+ else
+ $nice $fsck -v -y $partition >> $log
+ mount $mountpoint
+ fi
+fi
+
+# restart services
+
+if [ ! -z "$service" ]; then
+ for daemon in $service; do
+ info "Starting service $daemon..."
+ $initscripts/$daemon start
+ done
+fi
+
+# removes the lockfile
+
+if [ ! -z "$lockfile" ]; then
+ $rm $lockfile || warning "Could not remove lockfile $lockfile"
+fi
+
+echo "Finnishing backup at `date`" >> $log
+
projects / matthijs / upstream / backupninja.git / commitdiff