From: Micah Anderson <micah@riseup.net>
Date: Fri, 2 Nov 2007 19:32:51 +0000 (+0000)
Subject: remove rsnap and rename rub handler to rsync, after consultation with rhatto
X-Git-Tag: backupninja-0.9.5~23
X-Git-Url: https://git.stderr.nl/gitweb?a=commitdiff_plain;h=3a74d7d526b38b232b839c4e4b0bc1420ae664f8;p=matthijs%2Fupstream%2Fbackupninja.git

remove rsnap and rename rub handler to rsync, after consultation with rhatto
---

diff --git a/ChangeLog b/ChangeLog
index 5aa1fd0..0dacc94 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -37,11 +37,14 @@ version 0.9.5 -- unreleased
 	 . Handle "keep = yes" to disable old backups removal (Closes: #424633)
 	 . Add configuration option to allow you to disable the version check
 	   as in some instances this may be an ok scenario (Closes: #424632)
-	rub
+	rub/rsync
 	 . Fixed typo in rub handler that caused it to not work
 	 . Changed to use lib/vserver code
 	 . Fixed fsck error
 	 . Fixed integer comparison (Closes: Trac#3)
+	 . Renamed handler to 'rsync', replaces outdated rub handler
+	 . updated examples/Makefile.am and handlers/Makefile.am to include
+	   rsnap/rsync (Closes: #440554)
 	sys:
 	 . Fixed typo breaking things for VServers.
 	 . Fix bug when vrootdir is on its own partition (Closes: #395928)
@@ -55,8 +58,6 @@ version 0.9.5 -- unreleased
 	 . Force C locale for sfdisk to ensure english words are found in grep
     fixed 'make install' bug that failed if /etc/backup.d already existed
     changed spaces to tabs in Makefile.am
-    updated examples/Makefile.am and handlers/Makefile.am to include rsnap/rub
-    files (Closes: #440554)
     
 
 version 0.9.4 -- October 6th, 2006
diff --git a/examples/Makefile.am b/examples/Makefile.am
index ca8999f..5dfb7c3 100644
--- a/examples/Makefile.am
+++ b/examples/Makefile.am
@@ -1,6 +1,6 @@
 
 EXAMPLES = example.dup example.ldap example.makecd example.mysql \
-		example.pgsql example.rdiff example.rsnap example.sh \
+		example.pgsql example.rdiff example.sh \
 		example.svn example.sys example.trac
 
 EXTRA_DIST = $(EXAMPLES)
diff --git a/examples/example.rsnap b/examples/example.rsnap
deleted file mode 100644
index c1c50dd..0000000
--- a/examples/example.rsnap
+++ /dev/null
@@ -1,67 +0,0 @@
-##
-## This is an example rsnap configuration file.
-## The defaults are useful in most cases.
-##
-
-## global options
-[options]
-options =
-
-## the nicelevel the backup and all the children should run at
-## the higher nicelevel reduces the priority
-nicelevel = 19
-
-# how many days of data to keep
-keep = 90
-
-# the name of the directory created for the backup
-label = systemname_domain_tld
-
-[source]
-
-# bandwidth limit to be used for rsync
-bandwidthlimit = 1000
-
-# remote_rsync can be used if your rsync is not in your PATH, or if you
-# need a wrapper
-#remote_rsync = /usr/local/bin/sudo_rsync
-
-# options like -P<port> can be specified here
-#sshoptions =
-
-# test the ssh connection before proceding?
-testconnect = yes
-
-# don't translate owner+groupid's to local names
-numericids = 1
-
-# turn on rsync compression? (1 = on, 0 = off)
-compress = 1
-
-srchost = backupuser@hostname.domain.tld
-
-# files to include in the backup
-# (supports globbing with '*'), by default / is included
-include = /var
-include = /usr/local
-include = /home
-
-# files to exclude from the backup
-# (supports globbing with '*')
-exclude = /home/*/Maildir
-exclude = /var/log
-exclude = /proc
-exclude = /srv
-exclude = /sys
-exclude = /*.gz
-
-[dest]
-
-# base directory where backup is made to
-directory = /media/backup
-
-# only necessary if you hit a specifi 2.4 kernel bug
-enable_mv_timestamp_bug = no
-
-# if you say no here, only one dir is kept, and 'keep' is irrelevant
-incremental = yes
diff --git a/handlers/Makefile.am b/handlers/Makefile.am
index 710b25e..be8c7b5 100644
--- a/handlers/Makefile.am
+++ b/handlers/Makefile.am
@@ -1,7 +1,7 @@
 
 HANDLERS = dup dup.helper ldap ldap.helper maildir makecd		\
          makecd.helper mysql mysql.helper pgsql pgsql.helper rdiff	\
-         rdiff.helper rsnap rub sh svn sys sys.helper trac
+         rdiff.helper rsync sh svn sys sys.helper trac
 
 CLEANFILES = $(HANDLERS)
 
@@ -66,13 +66,9 @@ rdiff.helper: $(srcdir)/rdiff.helper.in
 	rm -f rdiff.helper
 	$(edit) $(srcdir)/rdiff.helper.in > rdiff.helper
 
-rsnap: $(srcdir)/rsnap.in
-	rm -f rsnap
-	$(edit) $(srcdir)/rsnap.in > rsnap
-
-rub: $(srcdir)/rub.in
-	rm -f rub
-	$(edit) $(srcdir)/rub.in > rub
+rsync: $(srcdir)/rsyn.in
+	rm -f rsync 
+	$(edit) $(srcdir)/rsync.in > rsync
 
 sh: $(srcdir)/sh.in
 	rm -f sh
diff --git a/handlers/rsnap.in b/handlers/rsnap.in
deleted file mode 100644
index 017a456..0000000
--- a/handlers/rsnap.in
+++ /dev/null
@@ -1,244 +0,0 @@
-# -*- mode: sh; sh-basic-offset: 3; indent-tabs-mode: nil; -*-
-#
-# rsync backup handler for backupninja
-# requires rsync and optional freedups 
-#
-# freedups:
-# http://www.stearns.org/freedups/
-# http://freshmeat.net/projects/freedups/
-#
-# rsync:
-# http://samba.anu.edu.au/rsync/
-
-# exit on error
-#set -e 
-
-# System commands used by this script 
-# replace with absolute path's if neccecary
-getconf rm rm
-getconf cp cp
-getconf touch touch
-getconf mv mv
-getconf ssh ssh
-getconf tr tr
-getconf rsync $RSYNC
-
-setsection options
-getconf options
-getconf label
-getconf nicelevel 0
-getconf keep 60
-
-setsection source
-getconf testconnect no
-getconf srchost localhost
-getconf compress 1
-getconf sshoptions
-getconf bandwidthlimit 1000
-getconf remote_rsync rsync
-getconf numericids 1
-getconf include
-getconf vsnames all
-getconf vsinclude
-getconf include
-getconf exclude
-
-setsection dest
-getconf directory
-getconf enable_mv_timestamp_bug no
-getconf freedups freedups
-getconf enable_freedups no
-getconf incremental yes
-
-# Apparently, a bug in some Linux kernels between 2.4.4 and 2.4.9 causes mv to update timestamps; 
-# this may result in inaccurate timestamps on the snapshot directories. 
-# Set enable_mv_timestamp_bug=1 to enable this workaround 
-if [ $enable_mv_timestamp_bug == "yes" ]; then
-	mv=my_mv 
-fi;
-
-function my_mv() {
-   ref=/tmp/makesnapshot-mymv-$$;
-   $touch -r $1 $ref;
-   $mv $1 $2;
-   $touch -r $ref $2;
-   $rm $ref;
-}
-
-if [ $enable_freedups == "yes" ]; then
-	# $freedups
-	debug "Not implemented yet!"
-fi;
-
-
-[ "$directory" != "" ] || fatal "Destination directory not set"
-[ "$include" != "" ] || fatal "No source includes specified"
-
-### vservers stuff ###
-
-# If vservers are configured, check that the ones listed in $vsnames do exist.
-local usevserver=no
-if [ $vservers_are_available = yes ]; then
-   if [ "$vsnames" = all ]; then
-      vsnames="$found_vservers"
-   else
-      if ! vservers_exist "$vsnames" ; then
-            fatal "At least one of the vservers listed in vsnames ($vsnames) does not exist."
-      fi
-   fi
-   if [ -n "$vsinclude" ]; then
-      info "Using vservers '$vsnames'"
-      usevserver=yes
-   fi
-else
-   [ -z "$vsinclude" ] || warning 'vservers support disabled in backupninja.conf, vsincludes configuration lines will be ignored'
-   [ -z "$vsnames" ] || warning 'vservers support disabled in backupninja.conf, vsnames configuration line will be ignored'   
-fi
-
-### see if we can login ###
-
-if [ "$testconnect" == "yes" ]; then
-    debug "$ssh $sshoptions -o PasswordAuthentication=no $srchost  'echo -n 1'"
-    if [ ! $test ]; then
-	result=`ssh $sshoptions -o PasswordAuthentication=no $srchost  'echo -n 1'`
-	if [ "$result" != "1" ]; then
-	    fatal "Can't connect to $srchost."
-	else
-	    debug "Connected to $srchost successfully"
-	fi
-    fi
-fi
-
-### COMMAND-LINE MANGLING ###
-
-[ "$bandwidthlimit" == 1000 ]    || options="$options --bwlimit=$bandwidthlimit"
-[ "$numericids"     == 1 ]       || options="$options --numeric-ids "
-[ "$compress"       == 1 ]       || options="$options --compress "
-[ "$remote_rsync"   == "rsync" ] || options="$options --rsync-path=$remote_rsync"
-
-if [ "$nicelevel" -ne 0 ]; then 
-	nice="nice -n $nicelevel" ;
-else 
-	nice="";
-fi
-
-execstr="$options --exclude '/' --delete-during --delete-excluded  --archive $sshoptions "
-
-if [ "$incremental" == "no" ]; then
-    execstr="${execstr} --whole-file "
-fi
-
-execstr_serverpart="$srchost:/"
-
-
-### SOURCE ###
-
-set -o noglob
-
-# excludes
-for i in $exclude; do
-	str="${i//__star__/*}"
-	#execstr="${execstr}--exclude '$str' "
-	execstr="${execstr}--exclude $str "
-done
-	
-# includes 
-for i in $include; do
-	str="${i//__star__/*}"
-	#execstr="${execstr}--include '$str' "
-	execstr="${execstr}--include $str "
-done
-
-# vsincludes
-if [ $usevserver = yes ]; then
-    for vserver in $vsnames; do
-	for vi in $vsinclude; do
-	    str="${vi//__star__/*}"
-	    execstr="${execstr}--include '$label/$vserver$str' "
-	done
-    done
-fi
-
-
-### SNAPSHOT ROTATION ###
-
-if [ "$incremental" == "yes" ]; then
-	debug "starting to rotate the old dirs"
-	# rotating snapshots 
-	# delete the oldest snapshot, if it exists:
-	debug "does $directory/$label/$keep exist?"
-	if [ -d "$directory/$label/$keep" ] ; then
-		debug "$rm -rf $directory/$label/$keep" 
-		if [ !$test ]; then 
-			#$rm -rf "$directory/$label/$keep" ;
-			debug "$rm -rf $directory/$label/$keep";
-		fi;
-	fi;
-
-	# shift the snapshots(s) back by one, if they exist
-	for (( i=$keep; $i>=0; i--)) ; do 
-		debug "does $directory/$label/$i exist?"
-		if [ -d "$directory/$label/$i" ] ; then
-			debug "$mv $directory/$label/$i $directory/$label/$(($i + 1))"
-			if [ !$test ]; then 
-				$mv "$directory/$label/$i" "$directory/$label/$(($i + 1))"
-			fi;
-		fi;
-	done
-
-	# make a hard-link-only (except for dirs) copy of
-	# assuming that exists, into the new dir
-	if [ -d "$directory/$label/1" ]; then	
-		debug "$cp -al $directory/$label/1 $directory/$label/0"
-		if [ !$test ]; then 
-			$cp -al $directory/$label/1 $directory/$label/0 ;
-		fi;
-	fi;
-
-fi
-
-
-set +o noglob
-
-### EXECUTE ###
-
-# exclude everything else, start with root
-#execstr="${execstr}--exclude '*' "
-		
-# include client-part and server-part
-#execstr="$execstr $execstr_serverpart"
-
-execstr=${execstr//\\*/\\\\\\*}
-
-if [ "$debug" == "1" ]; then 
-	execstr=" --verbose $execstr";
-	# execstr=" --verbose --dry-run $execstr";
-else 
-	execstr=" --quiet $execstr";
-fi;
-
-debug "$rsync $execstr $execstr_serverpart  $directory/$label/0"
-
-
-# rsync from the system into the latest snapshot (notice that
-# rsync behaves like cp --remove-destination by default, so the destination
-# is unlinked first.  If it were not so, this would copy over the other
-# snapshot(s) too!
-output=`$nice $rsync $execstr $execstr_serverpart $directory/$label/0 2>&1`
-code=$?
-
-# update the mtime of the 0 dir to reflect the snapshot time
-$touch $directory/$label/0 
-
-if [ $code -eq 0 ]; then
-	debug $output
-	info "rsync finished successfully.";
-else
-	debug "returncode $code : $output "
-	#fatal "rsync failed.";
-	warning "rsync failed.";
-fi;
-
-
-return 0;
-
diff --git a/handlers/rsync.in b/handlers/rsync.in
new file mode 100644
index 0000000..d3d704c
--- /dev/null
+++ b/handlers/rsync.in
@@ -0,0 +1,348 @@
+#
+# 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
+
diff --git a/handlers/rub.in b/handlers/rub.in
deleted file mode 100644
index bdd6e99..0000000
--- a/handlers/rub.in
+++ /dev/null
@@ -1,348 +0,0 @@
-#
-# 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-rub.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
-