#!/bin/bash
#
# backup-script system for cloning systems using rsync
-# Copyright (c)2008-2013 Alexander Barton, alex@barton.de
+# Copyright (c)2008-2015 Alexander Barton <alex@barton.de>
#
# 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
#
NAME=`basename $0`
-CONF_D="/etc/backup-script.d"
PIDFILE="/var/run/$NAME.pid"
DRYRUN=0
destinations=""
# Default settings, can be overwritten in backup-script.conf:
+conf_d="/etc/backup-script.d"
pre_exec=""
post_exec=""
default_target=""
default_ping=1
default_local=0
default_generations=0
+default_job_pre_exec=""
+default_job_post_exec=""
Usage() {
echo "Usage: $NAME [<options>] [<system> [<system> [...]]]"
echo
echo " -p, --progress Show progress, see rsync(1)."
- echo " -d, --dry-run Test run only, don't copy any data."
+ echo " -n, --dry-run Test run only, don't copy any data."
echo
echo "When no <system> is given, all defined systems are used."
echo
exit 9
}
+ExecJob() {
+ what="$1"
+ cmd="$2"
+
+ echo "Running job ${what}-exec command ..."
+ [ "$local" -eq 0 ] \
+ && cmd="$ssh_cmd ${user}@${system} $cmd"
+ echo -n "Start date (${what}-exec): "; date
+ echo "$cmd"
+ if [ "$DRYRUN" -eq 0 ]; then
+ $SHELL -c "$cmd"; ret=$?
+ else
+ echo " *** Trial run, not executing ${what}-exec command!"
+ ret=0
+ fi
+ [ $ret -eq 0 ] \
+ && echo "The ${what}-exec command completed with status 0, OK." \
+ || echo "The ${what}-exec command completed with ERRORS, code $ret!"
+ return $ret
+}
+
while [ $# -gt 0 ]; do
case "$1" in
"-n"|"--dry-run")
esac
done
+trap GotSignal SIGINT
+
+echo -n "Started: "; date
+
+for conf in "/etc/backup-script.conf" "${conf_d}/backup-script.conf"; do
+ if [ -r "$conf" ]; then
+ echo "Reading configuration: \"$conf\" ..."
+ source "$conf"
+ fi
+done
+echo
+
if [ $# -ge 1 ]; then
for s in $@; do
- if [ ! -r "${CONF_D}/$s" ]; then
- echo "$NAME: Can' read \"${CONF_D}/$s\"!"
+ if [ ! -r "${conf_d}/$s" ]; then
+ echo "$NAME: Can' read \"${conf_d}/$s\"!"
exit 1
fi
- sys="$sys ${CONF_D}/$s"
+ sys="$sys ${conf_d}/$s"
done
else
- sys=${CONF_D}/*
+ sys=${conf_d}/*
fi
-trap GotSignal SIGINT
-
-echo -n "Started: "; date
-echo
-
-[ -r "${CONF_D}/backup-script.conf" ] && source "${CONF_D}/backup-script.conf"
-
# check and create PID file
if [ -e "$PIDFILE" ]; then
echo "Lockfile \"$PIDFILE\" already exists."
ping="$default_ping"
local="$default_local"
generations="$default_generations"
+ job_pre_exec="$default_job_pre_exec"
+ job_post_exec="$default_job_post_exec"
# Read in system configuration file
source "$f"
|| systxt="\"$fname\" [\"$system\"]"
[ "$local" -eq 0 ] \
&& echo "Working on $systxt ..." \
- || echo "Working on $sytxts (local system) ..."
+ || echo "Working on $systxt (local system) ..."
count_all=$count_all+1
echo; continue
fi
- sys_target="$target/$system"
+ sys_target="$target/$fname"
+ sys_root="$sys_target"
if [ "$DRYRUN" -eq 0 ]; then
mkdir -p "$sys_target" >/dev/null 2>&1
if [ $? -ne 0 ]; then
echo "Can't create \"$sys_target\"!? \"$system\" skipped!"
- echo continue
+ echo; continue
fi
fi
ssh_cmd="ssh"
[ -n "$ssh_args_add" ] && ssh_cmd="$ssh_cmd $ssh_args_add"
+ # execute job "pre-exec" command, if any
+ if [ -n "$job_pre_exec" ]; then
+ ExecJob pre "$job_pre_exec" ; ret=$?
+ if [ $ret -ne 0 ]; then
+ [ $ret -ne 99 ] && count_started=$count_started+1
+ echo "Pre-exec command failed, \"$system\" skipped!"
+ echo; continue
+ fi
+ fi
+
+ # prepare (remote) command ...
cmd="rsync --archive"
[ "$compress" -ne 0 ] && cmd="$cmd --compress"
cmd="$cmd --rsh=\"$ssh_cmd\" --delete --delete-excluded --sparse"
echo -n "Start date: "; date
echo "$cmd"
count_started=$count_started+1
+ ok=0
if [ "$DRYRUN" -eq 0 ]; then
rm -f "$sys_target/.stamp"
echo "System \"$system\" completed with status $ret, OK."
[ "$DRYRUN" -gt 0 ] || count_ok=$count_ok+1
+ ok=1
else
echo "System \"$system\" completed with ERRORS, code $ret!"
fi
+ # execute job "post-exec" command, if any
+ if [ -n "$job_post_exec" ]; then
+ ExecJob post "$job_post_exec"
+ fi
+
+ if [ $generations -gt 0 ]; then
+ # Clean up old generations
+ to_delete=`ls -1t "$sys_root" 2>/dev/null | tail -n+$generations | sort`
+ if [ -n "$to_delete" -a $ok -eq 1 ]; then
+ [ "$DRYRUN" -eq 0 ] \
+ && echo "Deleting old backup generations:" \
+ || echo " *** Trial run, not deleting old generations:"
+ for delete in $to_delete; do
+ dir="$sys_root/$delete"
+ if [ ! -e "$dir/.stamp" ]; then
+ echo "Not deleting \"$dir\", not a backup directory!?"
+ continue
+ fi
+ last=`stat "$dir/.stamp" 2>/dev/null | grep "^Modify: " \
+ | cut -d':' -f2- | cut -d. -f1`
+ echo "Removing backup from" $last "..."
+ if [ "$DRYRUN" -eq 0 ]; then
+ btrfs subvolume delete \
+ "$dir" >/dev/null 2>&1
+ [ $? -eq 0 ] || \
+ echo "Failed to delete \"$dir\"!"
+ fi
+ done
+ echo -n "Clean up finished: "; date
+ elif [ -n "$to_delete" ]; then
+ echo "There have been errors, not cleaning up old generations!"
+ else
+ echo "Nothing to clean up."
+ fi
+ fi
+
destinations="$destinations $target"
echo
done
projects / backup-script.git / blobdiff