source4/scripting/bin/samba_backup

   1 #!/bin/sh
   2 #
   3 # Copyright (C) Matthieu Patou <mat@matws.net> 2010-2011
   4 #
   5 # This program is free software; you can redistribute it and/or modify
   6 # it under the terms of the GNU General Public License as published by
   7 # the Free Software Foundation; either version 3 of the License, or
   8 # (at your option) any later version.
   9 #
  10 # This program is distributed in the hope that it will be useful,
  11 # but WITHOUT ANY WARRANTY; without even the implied warranty of
  12 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13 # GNU General Public License for more details.
  14 #
  15 # You should have received a copy of the GNU General Public License
  16 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
  17 #
  18 # Revised 2013-09-25, Brian Martin, as follows:
  19 #    - Allow retention period ("DAYS") to be specified as a parameter.
  20 #    - Allow individual positional parameters to be left at the default
  21 #      by specifying "-"
  22 #    - Use IS0 8601 standard dates (yyyy-mm-dd instead of mmddyyyy).
  23 #    - Display tar exit codes when reporting errors.
  24 #    - Don't send error messages to /dev/null, so we know what failed.
  25 #    - Suppress useless tar "socket ignored" message.
  26 #    - Fix retention period bug when deleting old backups ($DAYS variable
  27 #      could be set, but was ignored).
  28
  29
  30
  31 FROMWHERE=/usr/local/samba
  32 WHERE=/usr/local/backups
  33 DAYS=90                         # Set default retention period.
  34 if [ -n "$1" ] && [ "$1" = "-h" -o "$1" = "--usage" ]; then
  35         echo "samba_backup [provisiondir] [destinationdir] [retpd]"
  36         echo "Will backup your provision located in provisiondir to archive stored"
  37         echo "in destinationdir for retpd days. Use - to leave an option unchanged."
  38         echo "Default provisiondir: $FROMWHERE"
  39         echo "Default destinationdir: $WHERE"
  40         echo "Default destinationdir: $DAYS"
  41         exit 0
  42 fi
  43
  44 [ -n "$1" -a "$1" != "-" ]&&FROMWHERE=$1        # Use parm or default if "-".  Validate later.
  45 [ -n "$2" -a "$2" != "-" ]&&WHERE=$2            # Use parm or default if "-".  Validate later.
  46 [ -n "$3" -a "$3" -eq "$3" 2> /dev/null ]&&DAYS=$3      # Use parm or default if non-numeric (incl "-").
  47
  48 DIRS="private etc sysvol"
  49 #Number of days to keep the backup
  50 WHEN=`date +%Y-%m-%d`   # ISO 8601 standard date.
  51
  52 if [ ! -d $WHERE ]; then
  53         echo "Missing backup directory $WHERE"
  54         exit 1
  55 fi
  56
  57 if [ ! -d $FROMWHERE ]; then
  58         echo "Missing or wrong provision directory $FROMWHERE"
  59         exit 1
  60 fi
  61
  62 cd $FROMWHERE
  63 for d in $DIRS;do
  64         relativedirname=`find . -type d -name "$d" -prune`
  65         n=`echo $d | sed 's/\//_/g'`
  66         if [ "$d" = "private" ]; then
  67                 find $relativedirname -name "*.ldb.bak" -exec rm {} \;
  68                 for ldb in `find $relativedirname -name "*.ldb"`; do
  69                         tdbbackup $ldb
  70                         Status=$?       # Preserve $? for message, since [ alters it.
  71                         if [ $Status -ne 0 ]; then
  72                                 echo "Error while backing up $ldb - status $Status"
  73                                 exit 1
  74                         fi
  75                 done
  76                 # Run the backup.
  77                 #    --warning=no-file-ignored set to suppress "socket ignored" messages.
  78                 tar cjf ${WHERE}/samba4_${n}.${WHEN}.tar.bz2  $relativedirname --exclude=\*.ldb --warning=no-file-ignored --transform 's/.ldb.bak$/.ldb/'
  79                 Status=$?       # Preserve $? for message, since [ alters it.
  80                 if [ $Status -ne 0 -a $Status -ne 1 ]; then     # Ignore 1 - private dir is always changing.
  81                         echo "Error while archiving ${WHERE}/samba4_${n}.${WHEN}.tar.bz2 - status = $Status"
  82                         exit 1
  83                 fi
  84                 find $relativedirname -name "*.ldb.bak" -exec rm {} \;
  85         else
  86                 # Run the backup.
  87                 #    --warning=no-file-ignored set to suppress "socket ignored" messages.
  88                 tar cjf ${WHERE}/${n}.${WHEN}.tar.bz2  $relativedirname --warning=no-file-ignored
  89                 Status=$?       # Preserve $? for message, since [ alters it.
  90                 if [ $Status -ne 0 ]; then
  91                         echo "Error while archiving ${WHERE}/${n}.${WHEN}.tar.bz2 - status = $Status"
  92                         exit 1
  93                 fi
  94         fi
  95 done
  96
  97 find $WHERE -name "samba4_*bz2" -mtime +$DAYS -exec rm  {} \;