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

1 files changed, 348 insertions, 0 deletions

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
+