bin/backup-script

   1 #!/bin/bash
   2 #
   3 # backup-script system for cloning systems using rsync
   4 # Copyright (c)2008-2016 Alexander Barton <alex@barton.de>
   5 #
   6 # This program is free software; you can redistribute it and/or modify
   7 # it under the terms of the GNU General Public License as published by
   8 # the Free Software Foundation; either version 2 of the License, or
   9 # (at your option) any later version.
  10 # Please read the file COPYING, README and AUTHORS for more information.
  11 #
  12
  13 NAME=$(basename "$0")
  14 PIDFILE="/var/run/$NAME.pid"
  15
  16 DRYRUN=0
  17 VERBOSE=0
  18 TAG=""
  19
  20 export LC_ALL=C
  21
  22 declare -i count_all=0
  23 declare -i count_started=0
  24 declare -i count_ok=0
  25 declare -i count_ok_vanished=0
  26 declare -i count_enabled=0
  27
  28 destinations=""
  29
  30 # Default settings, can be overwritten in backup-script.conf:
  31 [ -d "/usr/local/etc/backup-script.d" ] \
  32         && conf_d="/usr/local/etc/backup-script.d" \
  33         || conf_d="/etc/backup-script.d"
  34 setup_exec=""
  35 pre_exec=""
  36 post_exec=""
  37 default_backup_type="rsync"
  38 default_source_root="/"
  39 default_files="running-config"
  40 default_target="/var/backups"
  41 default_user="root"
  42 default_ssh_args_add=""
  43 default_rsync_args_add=""
  44 default_exclude_args_add=""
  45 default_exclude_dirs_add=""
  46 default_compress=1
  47 default_ping=1
  48 default_local=0
  49 default_generations=0
  50 default_io_timeout="1800"
  51 default_job_pre_exec=""
  52 default_job_post_exec=""
  53 default_tags=""
  54
  55 Usage() {
  56         echo "Usage: $NAME [<options>] [<system> [<system> [...]]]"
  57         echo
  58         echo "  -n, --dry-run       Test run only, don't copy any data."
  59         echo "  -p, --progress      Show progress, see rsync(1)."
  60         echo "  -t TAG, --tag TAG   Only run jobs with tag TAG."
  61         echo
  62         echo "When no <system> is given, all defined systems are used."
  63         echo
  64         echo -e $config_info
  65         echo
  66         exit 2
  67 }
  68
  69 CleanUp() {
  70         if [ -n "$post_exec" ]; then
  71                 echo "Executing \"$post_exec\" ..."
  72                 sh -c $post_exec
  73                 if [ $? -ne 0 ]; then
  74                         echo "Warning: post-exec command failed!"
  75                 fi
  76                 echo
  77         fi
  78         rm -f "$PIDFILE"
  79 }
  80
  81 GotSignal() {
  82         echo
  83         echo "--> Got break signal, cleaning up & aborting ..."
  84         echo
  85         CleanUp
  86         echo -n "Aborted: "; date
  87         echo
  88         sleep 3
  89         exit 9
  90 }
  91
  92 ExecJob() {
  93         local what="$1"
  94         local cmd="$2"
  95
  96         echo "Running job ${what}-exec command ..."
  97         [ "$local" -eq 0 ] \
  98                 && cmd="$ssh_cmd ${user}@${system} $cmd"
  99         echo -n "Start date (${what}-exec): "; date
 100         echo "$cmd"
 101         if [ "$DRYRUN" -eq 0 ]; then
 102                 $SHELL -c "$cmd"; local ret=$?
 103         else
 104                 echo " *** Trial run, not executing ${what}-exec command!"
 105                 ret=0
 106         fi
 107         [ $ret -eq 0 ] \
 108                 && echo "The ${what}-exec command completed with status 0, OK." \
 109                 || echo "The ${what}-exec command completed with ERRORS, code $ret!"
 110         return $ret
 111 }
 112
 113 GetFS() {
 114         local dir="$1"
 115
 116         while [ -n "$dir" ]; do
 117                 findmnt -fn -o FSTYPE --raw "$dir" 2>/dev/null; local r=$?
 118                 if [ $r -eq 0 ]; then
 119                         return 0
 120                 elif [ $r -eq 127 ]; then
 121                         echo "UNKNOWN"
 122                         return 1
 123                 fi
 124                 dir=$(dirname "$dir") || return 1
 125         done
 126 }
 127
 128 CreateSubvolume() {
 129         local volume="$1"
 130         local fs
 131         local dir
 132
 133         dir=$(dirname "$volume")
 134         fs=$(GetFS "$dir")
 135         case "$fs" in
 136           "btrfs")
 137                 btrfs subvolume create "$volume"  >/dev/null || return 1
 138                 ;;
 139           "zfs")
 140                 zfs create "$(echo "$volume" | cut -c2-)" || return 1
 141                 ;;
 142           *)
 143                 echo "CreateSubvolume: Incompatible FS type \"$fs\" on \"$dir\"!"
 144                 return 9
 145         esac
 146         return 0
 147 }
 148
 149 CloneSubvolume() {
 150         local source="$1"
 151         local volume="$2"
 152         local snapshot="$3"
 153         local dir
 154         local fs
 155         local link_name
 156
 157         dir=$(dirname "source")
 158         fs=$(GetFS "$source")
 159         case "$fs" in
 160           "btrfs")
 161                 btrfs subvolume snapshot "$source" "$snapshot"  >/dev/null || return 1
 162                 ;;
 163           "zfs")
 164                 zfs snapshot "$snapshot" || return 1
 165                 link_name="$(echo "$snapshot" | cut -d@ -f2-)"
 166                 ln -s \
 167                         "current/.zfs/snapshot/$link_name" \
 168                         "$(dirname "$volume")/$link_name"
 169                 ;;
 170           *)
 171                 echo "CloneSubvolume: Incompatible FS type \"$fs\" on \"$source\"!"
 172                 return 9
 173         esac
 174         return 0
 175 }
 176
 177 RenameSubvolume() {
 178         local source="$1"
 179         local target="$2"
 180         local fs
 181
 182         fs=$(GetFS "$source")
 183         case "$fs" in
 184           "btrfs")
 185                 mv "$source" "$target" || return 1
 186                 ;;
 187           "zfs")
 188                 zfs rename \
 189                   "$(echo "$source" | cut -c2-)" \
 190                   "$(echo "$target" | cut -c2-)" \
 191                         || return 1
 192                 ;;
 193           *)
 194                 echo "RenameSubvolume: Incompatible FS type \"$fs\" on \"$source\"!"
 195                 return 9
 196         esac
 197         return 0
 198 }
 199
 200 DeleteSubvolume() {
 201         local volume="$1"
 202         local fs
 203         local id
 204         local snapshot
 205
 206         fs=$(GetFS "$volume")
 207         case "$fs" in
 208           "btrfs")
 209                 btrfs subvolume delete "$volume" >/dev/null || return 1
 210                 ;;
 211           "zfs")
 212                 id="$(basename "$volume")"
 213                 if [ -h "$volume" ]; then
 214                         snapshot="$(dirname "$volume")/current@$id"
 215                 else
 216                         snapshot="$volume"
 217                 fi
 218                 zfs destroy -r "$(echo "$snapshot" | cut -c2-)" >/dev/null || return 1
 219                 [ -h "$volume" ] && rm "$volume"
 220                 ;;
 221           *)
 222                 echo "DeleteSubvolume: Incompatible FS type \"$fs\" on \"$volume\"!"
 223                 return 9
 224         esac
 225         return 0
 226 }
 227
 228 Initialize_Last_SysTarget_Snapshot() {
 229         sys_target="$1"
 230         unset last
 231         unset snapshot
 232
 233         fs=$(GetFS "$sys_target")
 234         case "$fs" in
 235           "btrfs")
 236                 # Search directory of last generation, if any
 237                 last=$(ls -1d "$sys_target"/[0-9]* 2>/dev/null | sort -r | head -n1)
 238                 if [ -n "$last" ]; then
 239                         if [ ! -d "$last" ]; then
 240                                 echo "Last snapshot \"$last\" seems not to be a directory!? \"$system\" skipped!"
 241                                 echo
 242                                 return 1
 243                         fi
 244                 fi
 245                 sys_target="$sys_target/$(date +%Y%m%d-%H%M%S)"
 246                 snapshot="$sys_target"
 247                 ;;
 248           "zfs")
 249                 # On ZFS, the last generation is always named "current"
 250                 if [ -e "$sys_target/current" ]; then
 251                         last="$sys_target/current"
 252                         if [ "$(uname)" = "Linux" ]; then
 253                                 date=$(LC_ALL=C stat "$1" | grep "^Modify: " \
 254                                  | cut -d':' -f2- | cut -d. -f1)
 255                         else
 256                                 date=$(LC_ALL=C stat -f "%Sc" "$1")
 257                         fi
 258                         date=$(echo "$date" | sed -e's/^ //g' -e 's/[-:]//g' -e 's/ /-/g')
 259
 260                 else
 261                         last=""
 262                         date="$(date +%Y%m%d-%H%M%S)"
 263                 fi
 264                 snapshot="$(echo "$sys_target/current" | cut -c2-)@$date"
 265                 sys_target="$sys_target/current"
 266                 ;;
 267           *)
 268                 echo "Initialize_Last_SysTarget_Snapshot: Incompatible FS type \"$fs\" on \"$sys_target\"!"
 269                 return 1
 270         esac
 271         return 0
 272 }
 273
 274 # Search configuration file (last one is used as default!)
 275 for conf in \
 276         "/usr/local/etc/backup-script.conf" \
 277         "/etc/backup-script.conf" \
 278         "${conf_d}/backup-script.conf" \
 279         "/usr/local/etc/backup-script.conf" \
 280 ; do
 281         [ -r "$conf" ] && break
 282 done
 283
 284 # Read in configuration file
 285 config_info="Configuration file is \"$conf\""
 286 if [ -r "$conf" ]; then
 287         # shellcheck source=/dev/null
 288         source "$conf"
 289 else
 290         config_info="${config_info} (not readable, using defaults)"
 291 fi
 292 config_info="${config_info},\nusing \"$conf_d\" as configuration directory."
 293
 294 while [ $# -gt 0 ]; do
 295         case "$1" in
 296           "-n"|"--dry-run")
 297                 DRYRUN=1; shift
 298                 ;;
 299           "-p"|"--progress")
 300                 VERBOSE=1; shift
 301                 ;;
 302           "-t"|"--tag")
 303                 shift; TAG="$1"; shift
 304                 [ -n "$TAG" ] || Usage
 305                 ;;
 306           "-"*)
 307                 Usage
 308                 ;;
 309           *)
 310                 break
 311         esac
 312 done
 313
 314 echo -n "Started: "; date
 315 echo -e "$config_info"
 316
 317 # Check rsync and its protocol version
 318 rsync=$(which "rsync" 2>/dev/null)
 319 if [ $? -ne 0 ]; then
 320         echo "Failed to detect rsync(1)! Is it installed in your \$PATH?"
 321         exit 1
 322 fi
 323 rsync_proto=$($rsync --version 2>/dev/null | head -n 1 | sed 's/.*  protocol version \([0-9]*\)$/\1/')
 324 if [ $? -ne 0 ]; then
 325         echo "Failed to detect protocol version of $rsync!"
 326         exit 1
 327 fi
 328 echo "Rsync command is $rsync, protocol version $rsync_proto."
 329
 330 [[ -n "$TAG" ]] && echo "Running jobs tagged with \"$TAG\"."
 331 echo
 332
 333 trap GotSignal SIGINT
 334
 335 if [ $# -ge 1 ]; then
 336         for s in "$@"; do
 337                 if [ ! -r "${conf_d}/$s" ]; then
 338                         echo "$NAME: Can' read \"${conf_d}/$s\"!"
 339                         exit 3
 340                 fi
 341                 sys+=("${conf_d}/$s")
 342         done
 343 else
 344         sys=("${conf_d}/"*)
 345 fi
 346
 347 if [ -n "$setup_exec" ]; then
 348         echo "Executing \"$setup_exec\" ..."
 349         sh -c $setup_exec
 350         if [ $? -ne 0 ]; then
 351                 echo "Error: setup command failed!"; echo
 352                 CleanUp
 353                 echo "Aborting backup."; echo
 354                 exit 5
 355         fi
 356         sleep 2
 357         echo
 358 fi
 359
 360 # check and create PID file
 361 if [ -e "$PIDFILE" ]; then
 362         echo "Lockfile \"$PIDFILE\" already exists."
 363         echo "Is an other instance still running?"
 364         echo
 365         echo -n "Aborted: "; date
 366         echo
 367         exit 4
 368 fi
 369 touch "$PIDFILE" 2>/dev/null
 370 if [ $? -ne 0 ]; then
 371         echo "Warning: can't create PID file \"$PIDFILE\"!"
 372         echo
 373 else
 374         echo "$$" >>"$PIDFILE"
 375 fi
 376
 377 if [ -n "$pre_exec" ]; then
 378         echo "Executing \"$pre_exec\" ..."
 379         sh -c $pre_exec
 380         if [ $? -ne 0 ]; then
 381                 echo "Error: pre-exec command failed!"; echo
 382                 CleanUp
 383                 echo "Aborting backup."; echo
 384                 exit 5
 385         fi
 386         sleep 2
 387         echo
 388 fi
 389
 390 for f in "${sys[@]}"; do
 391         [[ -r "$f" && -f "$f" ]] || continue
 392
 393         fname=$(basename "$f")
 394         case "$fname" in
 395                 "backup-script.conf"|*.sh)
 396                         continue
 397                         ;;
 398         esac
 399
 400         # Set global defaults
 401         system="$fname"
 402         backup_type="$default_backup_type"
 403         user="$default_user"
 404         source_root="$default_source_root"
 405         files="$default_files"
 406         target="$default_target"
 407         ssh_args_add="$default_ssh_args_add"
 408         rsync_args_add="$default_rsync_args_add"
 409         exclude_args_add="$default_exclude_args_add"
 410         exclude_dirs_add="$default_exclude_dirs_add"
 411         compress="$default_compress"
 412         ping="$default_ping"
 413         local="$default_local"
 414         generations="$default_generations"
 415         job_pre_exec="$default_job_pre_exec"
 416         job_post_exec="$default_job_post_exec"
 417         tags="$default_tags"
 418         io_timeout="$default_io_timeout"
 419
 420         # Compatibility with backup-pull(1) script: Save global values ...
 421         pre_exec_saved="$pre_exec"
 422         post_exec_saved="$post_exec"
 423
 424         # Compatibility with backup-pull(1) script: Set defaults
 425         host=""
 426         unset source
 427         unset pre_exec
 428         unset post_exec
 429
 430         # Read in system configuration file
 431         # shellcheck source=/dev/null
 432         source "$f"
 433
 434         # Compatibility with backup-pull(1) script: Fix up configuration
 435         [[ "$system" = "$fname" && -n "$host" ]] \
 436                 && system="$host"
 437         [[ "$source_root" = "$default_source_root" && -n "$source" ]] \
 438                 && source_root="$source"
 439         [[ -z "$job_pre_exec" && -n "$pre_exec" ]] \
 440                 && job_pre_exec="$pre_exec"
 441         [[ -z "$job_post_exec" && -n "$post_exec" ]] \
 442                 && job_post_exec="$post_exec"
 443
 444         # Compatibility with backup-pull(1) script: Restore global values ...
 445         pre_exec="$pre_exec_saved"
 446         post_exec="$post_exec_saved"
 447
 448         # Validate configuration
 449         if [[ "$system" = "localhost" || "$system" = "127.0.0.1" ]]; then
 450                 # Local system
 451                 local=1
 452                 compress=0
 453         fi
 454
 455         # Add "NONE" tag when no tags are given in the config file:
 456         [[ -z "$tags" ]] && tags="NONE"
 457         # Add "auto-tags":
 458         [[ "$local" -eq 1 ]] && tags="$tags,LOCAL"
 459         # Check tags
 460         if [[ -n "$TAG" && "$TAG" != "ALL" ]]; then
 461                 echo "$tags" | grep -E "(^|,)$TAG(,|$)" >/dev/null 2>&1
 462                 if [ $? -ne 0 ]; then
 463                         if [ "$DRYRUN" -ne 0 ]; then
 464                                 echo "Tags of system \"$system\" don't match \"$TAG\": \"$tags\". Skipped."
 465                                 echo
 466                         fi
 467                         continue
 468                 fi
 469         fi
 470
 471         # Make sure "source_root" ends with a slash ("/")
 472         case "$source_root" in
 473           *"/")
 474                 ;;
 475           *)
 476                 source_root="$source_root/"
 477         esac
 478
 479         # Make sure "target" DOESN'T end with a slash ("/")
 480         case "$target" in
 481           "*/")
 482                 target=$( echo "$target" | sed -e 's/\/$//g' )
 483                 ;;
 484         esac
 485
 486         [ "$system" = "$fname" ] \
 487                 && systxt="\"$system\"" \
 488                 || systxt="\"$fname\" [\"$system\"]"
 489         [ "$local" -eq 0 ] \
 490                 && echo "Working on $systxt ..." \
 491                 || echo "Working on $systxt (local system) ..."
 492
 493         count_all=$count_all+1
 494
 495         # Check if job is disabled
 496         if [ "$backup_type" = "disabled" ]; then
 497                 echo "Job is DISABLED and will be skipped."
 498                 echo; continue
 499         fi
 500
 501         count_enabled=$count_enabled+1
 502
 503         # Check target directory
 504         if [ -z "$target" ]; then
 505                 echo "No target directory specified for \"$system\"!? Skipped!"
 506                 echo; continue
 507         fi
 508         if [ ! -d "$target" ]; then
 509                 echo "Target \"$target\" is not a directory!? \"$system\" skipped!"
 510                 echo; continue
 511         fi
 512
 513         sys_target="$target/$fname"
 514         sys_root="$sys_target"
 515         if [[ "$DRYRUN" -eq 0 && ! -e "$sys_target" ]]; then
 516                 if [ $generations -gt 0 ]; then
 517                         CreateSubvolume "$sys_target"
 518                 else
 519                         mkdir -p "$sys_target"
 520                 fi
 521                 if [ $? -ne 0 ]; then
 522                         echo "Can't create \"$sys_target\"!? \"$system\" skipped!"
 523                         echo; continue
 524                 fi
 525         fi
 526
 527         if [[ "$local" -eq 0 && "$ping" -ne 0 ]]; then
 528                 # Check if system is alive
 529                 ping -c 1 "$system" >/dev/null 2>&1
 530                 if [ $? -ne 0 ]; then
 531                         echo "Host \"$system\" seems not to be alive!? Skipped."
 532                         echo; continue
 533                 fi
 534                 echo "OK, host \"$system\" seems to be alive."
 535         fi
 536
 537         if [ $generations -gt 0 ]; then
 538                 # Make sure no old backup is stored in system directory
 539                 if [ -e "$sys_target/.stamp" ]; then
 540                         # There seems to be a genearation-less backup in the
 541                         # target directory!
 542                         echo "Target directory \"$sys_target\" seems to be unclean!? \"$system\" skipped!"
 543                         echo; continue
 544                 fi
 545
 546                 Initialize_Last_SysTarget_Snapshot "$sys_target" || continue
 547
 548                 if [[ -n "$last" && ! -e "$last/.stamp" ]]; then
 549                         # Old backup directory without "stamp file", continue
 550                         echo "Found incomplete snapshot in \"$last\", reusing and renaming it ..."
 551                         RenameSubvolume "$last" "$sys_target"
 552                         if [ $? -ne 0 ]; then
 553                                 echo "Failed to rename last snapshot \"$last\" to \"$sys_target\"!? \"$system\" skipped!"
 554                                 echo; continue
 555                         fi
 556                 elif [ -n "$last" ]; then
 557                         # Old backup directory found, create new snapshot
 558                         echo "Found last snapshot in \"$last\"."
 559                         if [ "$DRYRUN" -eq 0 ]; then
 560                                 CloneSubvolume "$last" "$sys_target" "$snapshot"; r=$?
 561                                 if [ $r -ne 0 ]; then
 562                                         echo "Can't create snapshot \"$snapshot\" of \"$last\", code $r!? \"$system\" skipped!"
 563                                         echo; continue
 564                                 fi
 565                                 echo "Created new snapshot in \"$snapshot\"."
 566                         else
 567                                 echo " *** Trial run, not creating new snapshot in \"$snapshot\"!"
 568                         fi
 569                 else
 570                         # No old backup found, create new subvolume
 571                         if [ "$DRYRUN" -eq 0 ]; then
 572                                 CreateSubvolume "$sys_target"; r=$?
 573                                 if [ $r -ne 0 ]; then
 574                                         echo "Can't create subvolume \"$sys_target\", code $r!? \"$system\" skipped!"
 575                                         echo; continue
 576                                 fi
 577                                 echo "Created new subvolume in \"$sys_target\"."
 578                         else
 579                                 echo " *** Trial run, not creating new subvolume \"$sys_target\"!"
 580                         fi
 581                 fi
 582         fi
 583
 584         ssh_cmd="ssh"
 585         [ -n "$ssh_args_add" ] && ssh_cmd="$ssh_cmd $ssh_args_add"
 586
 587         # execute job "pre-exec" command, if any
 588         if [ -n "$job_pre_exec" ]; then
 589                 ExecJob pre "$job_pre_exec" ; ret=$?
 590                 if [ $ret -ne 0 ]; then
 591                         [ $ret -ne 99 ] && count_started=$count_started+1
 592                         echo "Pre-exec command failed, \"$system\" skipped!"
 593                         echo; continue
 594                 fi
 595         fi
 596
 597         # prepare (remote) command ...
 598         if [[ "$backup_type" == "rsync" ]]; then
 599                 cmd="$rsync --archive --timeout=$io_timeout"
 600                 [ "$compress" -ne 0 ] && cmd="$cmd --compress"
 601                 [ "$local" -eq 0 ] && cmd="$cmd --rsh=\"$ssh_cmd\""
 602                 cmd="$cmd --delete-during --delete-excluded --sparse"
 603                 if [ "$VERBOSE" -gt 0 ]; then
 604                         [ "$rsync_proto" -ge 31 ] \
 605                                 && cmd="$cmd --info=progress2" \
 606                                 || cmd="$cmd --progress"
 607                 fi
 608                 set -f
 609                 if [ "$source_root" = "$default_source_root" ]; then
 610                         for dir in \
 611                                 "/dev/**" \
 612                                 "/media/**" \
 613                                 "/mnt/**" \
 614                                 "/net/**" \
 615                                 "/proc/**" \
 616                                 "/run/**" \
 617                                 "/sys/**" \
 618                                 "/tmp/**" \
 619                                 "/var/cache/apt/**" \
 620                                 "/var/log/**" \
 621                                 "/var/tmp/**" \
 622                         ; do
 623                                 cmd="$cmd --exclude=$dir"
 624                         done
 625                 fi
 626                 [ -n "$exclude_args_add" ] && cmd="$cmd $exclude_args_add"
 627                 for dir in $exclude_dirs_add; do
 628                         cmd="$cmd --exclude=$dir"
 629                 done
 630                 [ -n "$rsync_args_add" ] && cmd="$cmd $rsync_args_add"
 631                 set +f
 632
 633                 [ "$local" -eq 0 ] \
 634                         && cmd="$cmd ${user}@${system}:$source_root $sys_target/" \
 635                         || cmd="$cmd $source_root $sys_target/"
 636         elif [[ "$backup_type" == "scp" ]]; then
 637                 cmd="scp"
 638                 [ "$VERBOSE" -eq 0 ] && cmd="$cmd -q"
 639                 for file in $files; do
 640                         cmd="$cmd ${user}@${system}:$file $sys_target/"
 641                 done
 642         else
 643                 echo "Backup type \"$backup_type\" undefined, \"$system\" skipped!"
 644                 echo; continue
 645         fi
 646
 647         echo "Backing up to \"$sys_target\" ..."
 648         echo -n "Start date: "; date
 649         echo "$cmd"
 650         count_started=$count_started+1
 651         ok=0
 652
 653         if [ "$DRYRUN" -eq 0 ]; then
 654                 stamp_file="$sys_target/.stamp"
 655                 rm -f "$stamp_file"
 656
 657                 # Execute backup command:
 658                 start_t=$(date "+%s")
 659                 $SHELL -c "$cmd"; ret=$?
 660                 end_t=$(date "+%s")
 661
 662                 echo "code=$ret" >"$stamp_file"
 663                 echo "start_t=$start_t" >>"$stamp_file"
 664                 echo "end_t=$end_t" >>"$stamp_file"
 665                 echo "cmd='$cmd'" >>"$stamp_file"
 666                 echo "backup_host='`hostname -f`'" >>"$stamp_file"
 667                 echo "backup_user='`id -un`'" >>"$stamp_file"
 668         else
 669                 echo " *** Trial run, not executing save command!"
 670                 ret=0
 671         fi
 672
 673         if [ $ret -eq 20 ]; then
 674                 echo "Backup of \"$system\" interrupted. Aborting ..."
 675                 GotSignal
 676         fi
 677
 678         echo -n "End date: "; date
 679         if [[ $ret -eq 0 || $ret -eq 24 ]]; then
 680                 [ $ret -eq 24 ] && count_ok_vanished=$count_ok_vanished+1
 681
 682                 echo "System \"$system\" completed with status $ret, OK."
 683                 [ "$DRYRUN" -gt 0 ] || count_ok=$count_ok+1
 684                 ok=1
 685         else
 686                 echo "System \"$system\" completed with ERRORS, code $ret!"
 687         fi
 688
 689         # execute job "post-exec" command, if any
 690         if [ -n "$job_post_exec" ]; then
 691                 ExecJob post "$job_post_exec"
 692         fi
 693
 694         if [ $generations -gt 0 ]; then
 695                 # Update "latest" symlink
 696                 if [ "$DRYRUN" -eq 0 ]; then
 697                         rm -f "$sys_root/latest"
 698                         ln -s "$sys_target" "$sys_root/latest"
 699                 fi
 700                 # Clean up old generations
 701                 declare -i gen_count=$generations+2
 702                 to_delete=$(ls -1t "$sys_root" 2>/dev/null | tail -n+$gen_count | sort)
 703                 if [[ -n "$to_delete" && $ok -eq 1 ]]; then
 704                         [ "$DRYRUN" -eq 0 ] \
 705                                 && echo "Deleting old backup generations (keep $generations) ..." \
 706                                 || echo " *** Trial run, not deleting old generations:"
 707                         for delete in $to_delete; do
 708                                 dir="$sys_root/$delete"
 709                                 if [ ! -e "$dir/.stamp" ]; then
 710                                         echo "Not deleting \"$dir\", not a backup directory!?"
 711                                         continue
 712                                 fi
 713                                 last=$(stat "$dir/.stamp" 2>/dev/null | grep "^Modify: " \
 714                                  | cut -d':' -f2- | cut -d. -f1)
 715                                 echo "Removing backup from" $last "..."
 716                                 if [ "$DRYRUN" -eq 0 ]; then
 717                                         DeleteSubvolume "$dir"
 718                                         [ $? -eq 0 ] || \
 719                                           echo "Failed to delete \"$dir\"!"
 720                                 fi
 721                         done
 722                         echo -n "Clean up finished: "; date
 723                 elif [ -n "$to_delete" ]; then
 724                         echo "There have been errors, not cleaning up old generations!"
 725                 else
 726                         echo "Nothing to clean up (keep up to $generations generations)."
 727                 fi
 728         fi
 729
 730         destinations="$destinations $target"
 731         echo
 732 done
 733
 734 sync
 735
 736 if [ "$DRYRUN" -eq 0 ]; then
 737         paths=""
 738         paths_zfs=""
 739         for dest in $(echo $destinations | sed -e 's/ /\n/g' | sort | uniq); do
 740                 fs=$(GetFS "$dest")
 741                 case $fs in
 742                   "zfs" )
 743                         paths_zfs="$paths_zfs $dest"
 744                         ;;
 745                   *)
 746                         paths="$paths $dest"
 747                 esac
 748         done
 749         if [ -n "$paths" ]; then
 750                 df -h $paths
 751                 echo
 752         fi
 753         if [ -n "$paths_zfs" ]; then
 754                 zfs list $paths_zfs
 755                 echo
 756         fi
 757 fi
 758
 759 CleanUp
 760
 761 echo -n "Done: "; date
 762 echo
 763 [ $count_all -eq 1 ] && s="" || s="s"
 764 [ $count_enabled -eq $count_all ] \
 765         && echo " - $count_all job$s defined (all enabled)," \
 766         || echo " - $count_all job$s defined ($count_enabled enabled),"
 767 [ $count_started -eq 1 ] && s="" || s="s"
 768 echo " - $count_started job$s started,"
 769 echo " - $count_ok done without errors."
 770 echo
 771
 772 if [ $count_started -ne $count_ok ]; then
 773         echo "----->  THERE HAVE BEEN ERRORS!  <-----"
 774         echo
 775         exit 6
 776 elif [ $count_enabled -ne $count_started ]; then
 777         exit 7
 778 fi
 779
 780 # -eof-