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#!/bin/sh
#
# Copyright (C) Matthieu Patou <mat@matws.net> 2010-2011
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
#
# Revised 2013-09-25, Brian Martin, as follows:
# - Allow retention period ("DAYS") to be specified as a parameter.
# - Allow individual positional parameters to be left at the default
# by specifying "-"
# - Use IS0 8601 standard dates (yyyy-mm-dd instead of mmddyyyy).
# - Display tar exit codes when reporting errors.
# - Don't send error messages to /dev/null, so we know what failed.
# - Suppress useless tar "socket ignored" message.
# - Fix retention period bug when deleting old backups ($DAYS variable
# could be set, but was ignored).
FROMWHERE=/usr/local/samba
WHERE=/usr/local/backups
DAYS=90 # Set default retention period.
if [ -n "$1" ] && [ "$1" = "-h" -o "$1" = "--usage" ]; then
echo "samba_backup [provisiondir] [destinationdir] [retpd]"
echo "Will backup your provision located in provisiondir to archive stored"
echo "in destinationdir for retpd days. Use - to leave an option unchanged."
echo "Default provisiondir: $FROMWHERE"
echo "Default destinationdir: $WHERE"
echo "Default destinationdir: $DAYS"
exit 0
fi
[ -n "$1" -a "$1" != "-" ]&&FROMWHERE=$1 # Use parm or default if "-". Validate later.
[ -n "$2" -a "$2" != "-" ]&&WHERE=$2 # Use parm or default if "-". Validate later.
[ -n "$3" -a "$3" -eq "$3" 2> /dev/null ]&&DAYS=$3 # Use parm or default if non-numeric (incl "-").
DIRS="private etc sysvol"
#Number of days to keep the backup
WHEN=`date +%Y-%m-%d` # ISO 8601 standard date.
if [ ! -d $WHERE ]; then
echo "Missing backup directory $WHERE"
exit 1
fi
if [ ! -d $FROMWHERE ]; then
echo "Missing or wrong provision directory $FROMWHERE"
exit 1
fi
cd $FROMWHERE
for d in $DIRS;do
relativedirname=`find . -type d -name "$d" -prune`
n=`echo $d | sed 's/\//_/g'`
if [ "$d" = "private" ]; then
find $relativedirname -name "*.ldb.bak" -exec rm {} \;
for ldb in `find $relativedirname -name "*.ldb"`; do
tdbbackup $ldb
Status=$? # Preserve $? for message, since [ alters it.
if [ $Status -ne 0 ]; then
echo "Error while backing up $ldb - status $Status"
exit 1
fi
done
# Run the backup.
# --warning=no-file-ignored set to suppress "socket ignored" messages.
tar cjf ${WHERE}/samba4_${n}.${WHEN}.tar.bz2 $relativedirname --exclude=\*.ldb --warning=no-file-ignored --transform 's/.ldb.bak$/.ldb/'
Status=$? # Preserve $? for message, since [ alters it.
if [ $Status -ne 0 -a $Status -ne 1 ]; then # Ignore 1 - private dir is always changing.
echo "Error while archiving ${WHERE}/samba4_${n}.${WHEN}.tar.bz2 - status = $Status"
exit 1
fi
find $relativedirname -name "*.ldb.bak" -exec rm {} \;
else
# Run the backup.
# --warning=no-file-ignored set to suppress "socket ignored" messages.
tar cjf ${WHERE}/${n}.${WHEN}.tar.bz2 $relativedirname --warning=no-file-ignored
Status=$? # Preserve $? for message, since [ alters it.
if [ $Status -ne 0 ]; then
echo "Error while archiving ${WHERE}/${n}.${WHEN}.tar.bz2 - status = $Status"
exit 1
fi
fi
done
find $WHERE -name "samba4_*bz2" -mtime +$DAYS -exec rm {} \;
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