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authorMicah Anderson <micah@riseup.net>2006-09-26 04:01:56 +0000
committerMicah Anderson <micah@riseup.net>2006-09-26 04:01:56 +0000
commitb5ebe5d215f4f1775db5b31e6b4e55ad5dc5cf76 (patch)
treefe5d4f62ac6f8a41e6dbc28ccdcd37b81119830d /handlers/rub
parent56e2f27e791228b24caf0f0e37a0ac09995f1fd1 (diff)
downloadbackupninja-b5ebe5d215f4f1775db5b31e6b4e55ad5dc5cf76.tar.gz
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Added rhatto's rub handler, a second try at a rsync snapshot
Diffstat (limited to 'handlers/rub')
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diff --git a/handlers/rub b/handlers/rub
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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 $mountpoint where the backup should be stored
+# days = number of backup increments (min = 5)
+# lockfile = lockfile to be kept during backup execution
+#
+# [source]
+# include = include folder on backup
+# exclude = exclude folder on backup
+# from = local or remote
+# ssh = ssh command line (remote only)
+# rsync = rsync command line
+# exclude_vserver = vserver-name (valid only if vservers = yes on backupninja.conf)
+#
+# [services]
+# initscripts = absolute path where scripts are located
+# service = script name to be stoped at the begining of the backup and started at its end
+#
+# You dont need to manually specify vservers using "include = /vservers".
+# They are automatically backed-up if vserver is set to "yes" on your backupninja.conf.
+#
+
+setsection general
+getconf log /var/log/backupninja-rub.log
+getconf partition
+getconf fsck
+getconf read_only
+getconf mountpoint
+getconf backupdir
+getconf rotate
+getconf days
+getconf lockfile
+
+setsection source
+getconf from local
+getconf rsync "rsync -av --delete"
+getconf ssh ssh
+getconf user
+getconf host
+getconf include
+getconf exclude
+getconf exclude_vserver
+
+setsection services
+getconf initscripts
+getconf service
+
+backupdir="$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
+