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