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 PREPOSTEXEC=1
  20
  21 export LC_ALL=C
  22
  23 declare -i count_all=0
  24 declare -i count_started=0
  25 declare -i count_ok=0
  26 declare -i count_ok_vanished=0
  27 declare -i count_enabled=0
  28
  29 destinations=""
  30
  31 # Default settings, can be overwritten in backup-script.conf:
  32 [ -d "/usr/local/etc/backup-script.d" ] \
  33         && conf_d="/usr/local/etc/backup-script.d" \
  34         || conf_d="/etc/backup-script.d"
  35 setup_exec=""
  36 pre_exec=""
  37 post_exec=""
  38 default_backup_type="rsync"
  39 default_source_root="/"
  40 default_files="running-config"
  41 default_target="/var/backups"
  42 default_user="root"
  43 default_ssh_args_add=""
  44 default_rsync_args_add=""
  45 default_exclude_args_add=""
  46 default_exclude_dirs_add=""
  47 default_compress=1
  48 default_ping=1
  49 default_local=0
  50 default_generations=0
  51 default_io_timeout="1800"
  52 default_job_pre_exec=""
  53 default_job_post_exec=""
  54 default_tags=""
  55
  56 Usage() {
  57         echo "Usage: $NAME [<options>] [<job> [<job> [...]]]"
  58         echo
  59         echo "  -n, --dry-run       Test run only, don't copy any data."
  60         echo "  -p, --progress      Show progress, see rsync(1)."
  61         echo "  -t TAG, --tag TAG   Only run jobs with tag TAG."
  62         echo "  -x, --no-exec       Don't run global pre-/post-exec commands."
  63         echo
  64         echo "When no <job> is given, all defined systems are used."
  65         echo
  66         # shellcheck disable=SC2086
  67         echo -e $config_info
  68         echo
  69         exit 2
  70 }
  71
  72 CleanUp() {
  73         if [[ -n "$pre_exec" && $PREPOSTEXEC -ne 0 ]]; then
  74                 echo "Executing \"$post_exec\" ..."
  75                 if ! sh -c $post_exec; then
  76                         echo "Warning: post-exec command failed!"
  77                 fi
  78                 echo
  79         fi
  80         rm -f "$PIDFILE"
  81 }
  82
  83 GotSignal() {
  84         echo
  85         echo "--> Got signal, cleaning up & aborting ..."
  86         echo
  87         CleanUp
  88         echo -n "Aborted: "; date
  89         echo
  90         sleep 3
  91         exit 9
  92 }
  93
  94 ExecJob() {
  95         local what="$1"
  96         local cmd="$2"
  97
  98         echo "Running job ${what}-exec command ..."
  99         [ "$local" -eq 0 ] \
 100                 && cmd="$ssh_cmd ${user}@${system} $cmd"
 101         echo -n "Start date (${what}-exec): "; date
 102         echo "$cmd"
 103         if [ "$DRYRUN" -eq 0 ]; then
 104                 $SHELL -c "$cmd"; local ret=$?
 105         else
 106                 echo " *** Trial run, not executing ${what}-exec command!"
 107                 ret=0
 108         fi
 109         [ $ret -eq 0 ] \
 110                 && echo "The ${what}-exec command completed with status 0, OK." \
 111                 || echo "The ${what}-exec command completed with ERRORS, code $ret!"
 112         return $ret
 113 }
 114
 115 GetFS() {
 116         local dir="$1"
 117
 118         while [ -n "$dir" ]; do
 119                 findmnt -fn -o FSTYPE --raw "$dir" 2>/dev/null; local r=$?
 120                 if [ $r -eq 0 ]; then
 121                         return 0
 122                 elif [ $r -eq 127 ]; then
 123                         echo "UNKNOWN"
 124                         return 1
 125                 fi
 126                 dir=$(dirname "$dir") || return 1
 127         done
 128 }
 129
 130 CreateSubvolume() {
 131         local volume="$1"
 132         local fs
 133         local dir
 134
 135         dir=$(dirname "$volume")
 136         fs=$(GetFS "$dir")
 137         case "$fs" in
 138           "btrfs")
 139                 btrfs subvolume create "$volume"  >/dev/null || return 1
 140                 ;;
 141           "zfs")
 142                 zfs create "$(echo "$volume" | cut -c2-)" || return 1
 143                 ;;
 144           *)
 145                 echo "CreateSubvolume: Incompatible FS type \"$fs\" on \"$dir\"!"
 146                 return 9
 147         esac
 148         return 0
 149 }
 150
 151 CloneSubvolume() {
 152         local source="$1"
 153         local volume="$2"
 154         local snapshot="$3"
 155         local dir
 156         local fs
 157         local link_name
 158
 159         dir=$(dirname "source")
 160         fs=$(GetFS "$source")
 161         case "$fs" in
 162           "btrfs")
 163                 btrfs subvolume snapshot "$source" "$snapshot"  >/dev/null || return 1
 164                 ;;
 165           "zfs")
 166                 zfs snapshot "$snapshot" || return 1
 167                 link_name="$(echo "$snapshot" | cut -d@ -f2-)"
 168                 ln -s \
 169                         "current/.zfs/snapshot/$link_name" \
 170                         "$(dirname "$volume")/$link_name"
 171                 ;;
 172           *)
 173                 echo "CloneSubvolume: Incompatible FS type \"$fs\" on \"$source\"!"
 174                 return 9
 175         esac
 176         return 0
 177 }
 178
 179 RenameSubvolume() {
 180         local source="$1"
 181         local target="$2"
 182         local fs
 183
 184         fs=$(GetFS "$source")
 185         case "$fs" in
 186           "btrfs")
 187                 mv "$source" "$target" || return 1
 188                 ;;
 189           "zfs")
 190                 zfs rename \
 191                   "$(echo "$source" | cut -c2-)" \
 192                   "$(echo "$target" | cut -c2-)" \
 193                         || return 1
 194                 ;;
 195           *)
 196                 echo "RenameSubvolume: Incompatible FS type \"$fs\" on \"$source\"!"
 197                 return 9
 198         esac
 199         return 0
 200 }
 201
 202 DeleteSubvolume() {
 203         local volume="$1"
 204         local fs
 205         local id
 206         local snapshot
 207
 208         fs=$(GetFS "$volume")
 209         case "$fs" in
 210           "btrfs")
 211                 btrfs subvolume delete "$volume" >/dev/null || return 1
 212                 ;;
 213           "zfs")
 214                 id="$(basename "$volume")"
 215                 if [ -h "$volume" ]; then
 216                         snapshot="$(dirname "$volume")/current@$id"
 217                 else
 218                         snapshot="$volume"
 219                 fi
 220                 zfs destroy -r "$(echo "$snapshot" | cut -c2-)" >/dev/null || return 1
 221                 [ -h "$volume" ] && rm "$volume"
 222                 ;;
 223           *)
 224                 echo "DeleteSubvolume: Incompatible FS type \"$fs\" on \"$volume\"!"
 225                 return 9
 226         esac
 227         return 0
 228 }
 229
 230 Initialize_Last_SysTarget_Snapshot() {
 231         sys_target="$1"
 232         unset last
 233         unset snapshot
 234
 235         fs=$(GetFS "$sys_target")
 236         case "$fs" in
 237           "btrfs")
 238                 # Search directory of last generation, if any
 239                 # shellcheck disable=SC2012
 240                 last=$(ls -1d "$sys_target"/[0-9]* 2>/dev/null | sort -r | head -n1)
 241                 if [ -n "$last" ]; then
 242                         if [ ! -d "$last" ]; then
 243                                 echo "Last snapshot \"$last\" seems not to be a directory!? \"$system\" skipped!"
 244                                 echo
 245                                 return 1
 246                         fi
 247                 fi
 248                 sys_target="$sys_target/$(date +%Y%m%d-%H%M%S)"
 249                 snapshot="$sys_target"
 250                 ;;
 251           "zfs")
 252                 # On ZFS, the last generation is always named "current"
 253                 if [ -e "$sys_target/current" ]; then
 254                         last="$sys_target/current"
 255                         if [ "$(uname)" = "Linux" ]; then
 256                                 date=$(LC_ALL=C stat "$1" | grep "^Modify: " \
 257                                  | cut -d':' -f2- | cut -d. -f1)
 258                         else
 259                                 date=$(LC_ALL=C stat -f "%Sc" "$1")
 260                         fi
 261                         date=$(echo "$date" | sed -e's/^ //g' -e 's/[-:]//g' -e 's/ /-/g')
 262
 263                 else
 264                         last=""
 265                         date="$(date +%Y%m%d-%H%M%S)"
 266                 fi
 267                 snapshot="$(echo "$sys_target/current" | cut -c2-)@$date"
 268                 sys_target="$sys_target/current"
 269                 ;;
 270           *)
 271                 echo "Initialize_Last_SysTarget_Snapshot: Incompatible FS type \"$fs\" on \"$sys_target\"!"
 272                 return 1
 273         esac
 274         return 0
 275 }
 276
 277 # Search configuration file (last one is used as default!)
 278 for conf in \
 279         "/usr/local/etc/backup-script.conf" \
 280         "/etc/backup-script.conf" \
 281         "${conf_d}/backup-script.conf" \
 282         "/usr/local/etc/backup-script.conf" \
 283 ; do
 284         [ -r "$conf" ] && break
 285 done
 286
 287 # Read in configuration file
 288 config_info="Configuration file is \"$conf\""
 289 if [ -r "$conf" ]; then
 290         # shellcheck source=/dev/null
 291         source "$conf"
 292 else
 293         config_info="${config_info} (not readable, using defaults)"
 294 fi
 295 config_info="${config_info},\nusing \"$conf_d\" as configuration directory."
 296
 297 while [ $# -gt 0 ]; do
 298         case "$1" in
 299           "-n"|"--dry-run")
 300                 DRYRUN=1; shift
 301                 ;;
 302           "-p"|"--progress")
 303                 VERBOSE=1; shift
 304                 ;;
 305           "-t"|"--tag")
 306                 shift; TAG="$1"; shift
 307                 [ -n "$TAG" ] || Usage
 308                 ;;
 309           "-x"|"--no-exec")
 310                 PREPOSTEXEC=0; shift
 311                 ;;
 312           "-"*)
 313                 Usage
 314                 ;;
 315           *)
 316                 break
 317         esac
 318 done
 319
 320 echo -n "Started: "; date
 321 echo -e "$config_info"
 322
 323 # Check rsync and its protocol version
 324 if ! rsync=$(which "rsync" 2>/dev/null); then
 325         echo "Failed to detect rsync(1)! Is it installed in your \$PATH?"
 326         exit 1
 327 fi
 328 if ! rsync_proto=$($rsync --version 2>/dev/null | head -n 1 | sed 's/.*  protocol version \([0-9]*\)$/\1/'); then
 329         echo "Failed to detect protocol version of $rsync!"
 330         exit 1
 331 fi
 332 echo "Rsync command is $rsync, protocol version $rsync_proto."
 333
 334 [[ -n "$TAG" ]] && echo "Running jobs tagged with \"$TAG\"."
 335 echo
 336
 337 if [ $# -ge 1 ]; then
 338         for s in "$@"; do
 339                 if [ ! -r "${conf_d}/$s" ]; then
 340                         echo "$NAME: Can' read \"${conf_d}/$s\"!"
 341                         exit 3
 342                 fi
 343                 sys+=("${conf_d}/$s")
 344         done
 345 else
 346         sys=("${conf_d}/"*)
 347 fi
 348
 349 if [[ -n "$setup_exec" && $PREPOSTEXEC -ne 0 ]]; then
 350         echo "Executing \"$setup_exec\" ..."
 351         if ! sh -c $setup_exec; then
 352                 echo "Error: setup command failed!"; echo
 353                 echo "Aborting backup."; echo
 354                 exit 5
 355         fi
 356         sleep 2
 357         echo
 358 fi
 359
 360 trap GotSignal SIGINT SIGTERM
 361
 362 # check and create PID file
 363 if [ -e "$PIDFILE" ]; then
 364         echo "Lockfile \"$PIDFILE\" already exists."
 365         echo "Is an other instance still running?"
 366         echo
 367         echo -n "Aborted: "; date
 368         echo
 369         exit 4
 370 fi
 371 if ! touch "$PIDFILE" 2>/dev/null; then
 372         echo "Warning: can't create PID file \"$PIDFILE\"!"
 373         echo
 374 else
 375         echo "$$" >>"$PIDFILE"
 376 fi
 377
 378 if [[ -n "$pre_exec" && $PREPOSTEXEC -ne 0 ]]; then
 379         echo "Executing \"$pre_exec\" ..."
 380         if ! sh -c $pre_exec; then
 381                 echo "Error: pre-exec command failed!"; echo
 382                 CleanUp
 383                 echo "Aborting backup."; echo
 384                 exit 5
 385         fi
 386         sleep 2
 387         echo
 388 fi
 389
 390 for f in "${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" && "$TAG" != "ALL" ]]; then
 461                 if ! echo "$tags" | grep -E "(^|,)$TAG(,|$)" >/dev/null 2>&1; then
 462                         if [ "$DRYRUN" -ne 0 ]; then
 463                                 echo "Tags of system \"$system\" don't match \"$TAG\": \"$tags\". Skipped."
 464                                 echo
 465                         fi
 466                         continue
 467                 fi
 468         fi
 469
 470         # Make sure "source_root" ends with a slash ("/")
 471         case "$source_root" in
 472           *"/")
 473                 ;;
 474           *)
 475                 source_root="$source_root/"
 476         esac
 477
 478         # Make sure "target" DOESN'T end with a slash ("/")
 479         case "$target" in
 480           "*/")
 481                 target=$( echo "$target" | sed -e 's/\/$//g' )
 482                 ;;
 483         esac
 484
 485         [ "$system" = "$fname" ] \
 486                 && systxt="\"$system\"" \
 487                 || systxt="\"$fname\" [\"$system\"]"
 488         [ "$local" -eq 0 ] \
 489                 && echo "Working on $systxt ..." \
 490                 || echo "Working on $systxt (local system) ..."
 491
 492         count_all=$count_all+1
 493
 494         # Check if job is disabled
 495         if [ "$backup_type" = "disabled" ]; then
 496                 echo "Job is DISABLED and will be skipped."
 497                 echo; continue
 498         fi
 499
 500         count_enabled=$count_enabled+1
 501
 502         # Check target directory
 503         if [ -z "$target" ]; then
 504                 echo "No target directory specified for \"$system\"!? Skipped!"
 505                 echo; continue
 506         fi
 507         if [ ! -d "$target" ]; then
 508                 echo "Target \"$target\" is not a directory!? \"$system\" skipped!"
 509                 echo; continue
 510         fi
 511
 512         sys_target="$target/$fname"
 513         sys_root="$sys_target"
 514         if [[ "$DRYRUN" -eq 0 && ! -e "$sys_target" ]]; then
 515                 if [ $generations -gt 0 ]; then
 516                         CreateSubvolume "$sys_target"; r=$?
 517                 else
 518                         mkdir -p "$sys_target"; r=$?
 519                 fi
 520                 if [ $r -ne 0 ]; then
 521                         echo "Can't create \"$sys_target\"!? \"$system\" skipped!"
 522                         echo; continue
 523                 fi
 524         fi
 525
 526         if [[ "$local" -eq 0 && "$ping" -ne 0 ]]; then
 527                 # Check if system is alive
 528                 if ! ping -c 1 "$system" >/dev/null 2>&1; then
 529                         echo "Host \"$system\" seems not to be alive!? Skipped."
 530                         echo; continue
 531                 fi
 532                 echo "OK, host \"$system\" seems to be alive."
 533         fi
 534
 535         if [ $generations -gt 0 ]; then
 536                 # Make sure no old backup is stored in system directory
 537                 if [ -e "$sys_target/.stamp" ]; then
 538                         # There seems to be a genearation-less backup in the
 539                         # target directory!
 540                         echo "Target directory \"$sys_target\" seems to be unclean!? \"$system\" skipped!"
 541                         echo; continue
 542                 fi
 543
 544                 Initialize_Last_SysTarget_Snapshot "$sys_target" || continue
 545
 546                 if [[ -n "$last" && ! -e "$last/.stamp" ]]; then
 547                         # Old backup directory without "stamp file", continue
 548                         echo "Found incomplete snapshot in \"$last\", reusing and renaming it ..."
 549                         if ! RenameSubvolume "$last" "$sys_target"; then
 550                                 echo "Failed to rename last snapshot \"$last\" to \"$sys_target\"!? \"$system\" skipped!"
 551                                 echo; continue
 552                         fi
 553                 elif [ -n "$last" ]; then
 554                         # Old backup directory found, create new snapshot
 555                         echo "Found last snapshot in \"$last\"."
 556                         if [ "$DRYRUN" -eq 0 ]; then
 557                                 CloneSubvolume "$last" "$sys_target" "$snapshot"; r=$?
 558                                 if [ $r -ne 0 ]; then
 559                                         echo "Can't create snapshot \"$snapshot\" of \"$last\", code $r!? \"$system\" skipped!"
 560                                         echo; continue
 561                                 fi
 562                                 echo "Created new snapshot in \"$snapshot\"."
 563                         else
 564                                 echo " *** Trial run, not creating new snapshot in \"$snapshot\"!"
 565                         fi
 566                 else
 567                         # No old backup found, create new subvolume
 568                         if [ "$DRYRUN" -eq 0 ]; then
 569                                 CreateSubvolume "$sys_target"; r=$?
 570                                 if [ $r -ne 0 ]; then
 571                                         echo "Can't create subvolume \"$sys_target\", code $r!? \"$system\" skipped!"
 572                                         echo; continue
 573                                 fi
 574                                 echo "Created new subvolume in \"$sys_target\"."
 575                         else
 576                                 echo " *** Trial run, not creating new subvolume \"$sys_target\"!"
 577                         fi
 578                 fi
 579         fi
 580
 581         ssh_cmd="ssh"
 582         [ -n "$ssh_args_add" ] && ssh_cmd="$ssh_cmd $ssh_args_add"
 583
 584         # execute job "pre-exec" command, if any
 585         if [ -n "$job_pre_exec" ]; then
 586                 ExecJob pre "$job_pre_exec" ; ret=$?
 587                 if [ $ret -ne 0 ]; then
 588                         [ $ret -ne 99 ] && count_started=$count_started+1
 589                         echo "Pre-exec command failed, \"$system\" skipped!"
 590                         echo; continue
 591                 fi
 592         fi
 593
 594         # prepare (remote) command ...
 595         if [[ "$backup_type" == "rsync" ]]; then
 596                 cmd="$rsync --archive --timeout=$io_timeout"
 597                 [ "$compress" -ne 0 ] && cmd="$cmd --compress"
 598                 [ "$local" -eq 0 ] && cmd="$cmd --rsh=\"$ssh_cmd\""
 599                 cmd="$cmd --delete-during --delete-excluded --sparse"
 600                 if [ "$VERBOSE" -gt 0 ]; then
 601                         [ "$rsync_proto" -ge 31 ] \
 602                                 && cmd="$cmd --info=progress2" \
 603                                 || cmd="$cmd --progress"
 604                 fi
 605                 set -f
 606                 if [ "$source_root" = "$default_source_root" ]; then
 607                         for dir in \
 608                                 "/dev/**" \
 609                                 "/media/**" \
 610                                 "/mnt/**" \
 611                                 "/net/**" \
 612                                 "/proc/**" \
 613                                 "/run/**" \
 614                                 "/sys/**" \
 615                                 "/tmp/**" \
 616                                 "/var/cache/apt/**" \
 617                                 "/var/log/**" \
 618                                 "/var/tmp/**" \
 619                         ; do
 620                                 cmd="$cmd --exclude=$dir"
 621                         done
 622                 fi
 623                 [ -n "$exclude_args_add" ] && cmd="$cmd $exclude_args_add"
 624                 for dir in $exclude_dirs_add; do
 625                         cmd="$cmd --exclude=$dir"
 626                 done
 627                 [ -n "$rsync_args_add" ] && cmd="$cmd $rsync_args_add"
 628                 set +f
 629
 630                 [ "$local" -eq 0 ] \
 631                         && cmd="$cmd ${user}@${system}:$source_root $sys_target/" \
 632                         || cmd="$cmd $source_root $sys_target/"
 633         elif [[ "$backup_type" == "scp" ]]; then
 634                 cmd="scp"
 635                 [ "$VERBOSE" -eq 0 ] && cmd="$cmd -q"
 636                 for file in $files; do
 637                         cmd="$cmd ${user}@${system}:$file $sys_target/"
 638                 done
 639         else
 640                 echo "Backup type \"$backup_type\" undefined, \"$system\" skipped!"
 641                 echo; continue
 642         fi
 643
 644         echo "Backing up to \"$sys_target\" ..."
 645         echo -n "Start date: "; date
 646         echo "$cmd"
 647         count_started=$count_started+1
 648         ok=0
 649
 650         if [ "$DRYRUN" -eq 0 ]; then
 651                 stamp_file="$sys_target/.stamp"
 652                 rm -f "$stamp_file"
 653
 654                 # Execute backup command:
 655                 start_t=$(date "+%s")
 656                 $SHELL -c "$cmd"; ret=$?
 657                 end_t=$(date "+%s")
 658
 659                 {
 660                         echo "code=$ret"
 661                         echo "start_t=$start_t"
 662                         echo "end_t=$end_t"
 663                         echo "cmd='$cmd'"
 664                         echo "backup_host='$(hostname -f)'"
 665                         echo "backup_user='$(id -un)'"
 666                 } >"$stamp_file"
 667         else
 668                 echo " *** Trial run, not executing save command!"
 669                 ret=0
 670         fi
 671
 672         if [ $ret -eq 20 ]; then
 673                 echo "Backup of \"$system\" interrupted. Aborting ..."
 674                 GotSignal
 675         fi
 676
 677         echo -n "End date: "; date
 678         if [[ $ret -eq 0 || $ret -eq 24 ]]; then
 679                 [ $ret -eq 24 ] && count_ok_vanished=$count_ok_vanished+1
 680
 681                 echo "System \"$system\" completed with status $ret, OK."
 682                 [ "$DRYRUN" -gt 0 ] || count_ok=$count_ok+1
 683                 ok=1
 684         else
 685                 echo "System \"$system\" completed with ERRORS, code $ret!"
 686         fi
 687
 688         # execute job "post-exec" command, if any
 689         if [ -n "$job_post_exec" ]; then
 690                 ExecJob post "$job_post_exec"
 691         fi
 692
 693         if [ $generations -gt 0 ]; then
 694                 # Update "latest" symlink
 695                 if [ "$DRYRUN" -eq 0 ]; then
 696                         rm -f "$sys_root/latest"
 697                         ln -s "$sys_target" "$sys_root/latest"
 698                 fi
 699                 # Clean up old generations
 700                 declare -i gen_count=$generations+2
 701                 # shellcheck disable=SC2012
 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                                 # shellcheck disable=SC2086
 716                                 echo "Removing backup from" $last "..."
 717                                 if [ "$DRYRUN" -eq 0 ]; then
 718                                         DeleteSubvolume "$dir" \
 719                                                 || echo "Failed to delete \"$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         # shellcheck disable=SC2086
 740         for dest in $(echo $destinations | sed -e 's/ /\n/g' | sort | uniq); do
 741                 fs=$(GetFS "$dest")
 742                 case $fs in
 743                   "zfs" )
 744                         paths_zfs="$paths_zfs $dest"
 745                         ;;
 746                   *)
 747                         paths="$paths $dest"
 748                 esac
 749         done
 750         if [ -n "$paths" ]; then
 751                 # shellcheck disable=SC2086
 752                 df -h $paths
 753                 echo
 754         fi
 755         if [ -n "$paths_zfs" ]; then
 756                 # shellcheck disable=SC2086
 757                 zfs list $paths_zfs
 758                 echo
 759         fi
 760 fi
 761
 762 CleanUp
 763
 764 echo -n "Done: "; date
 765 echo
 766 [ $count_all -eq 1 ] && s="" || s="s"
 767 [ $count_enabled -eq $count_all ] \
 768         && echo " - $count_all job$s defined (all enabled)," \
 769         || echo " - $count_all job$s defined ($count_enabled enabled),"
 770 [ $count_started -eq 1 ] && s="" || s="s"
 771 echo " - $count_started job$s started,"
 772 echo " - $count_ok done without errors."
 773 echo
 774
 775 if [ $count_started -ne $count_ok ]; then
 776         echo "----->  THERE HAVE BEEN ERRORS!  <-----"
 777         echo
 778         exit 6
 779 elif [ $count_enabled -ne $count_started ]; then
 780         exit 7
 781 fi
 782
 783 # -eof-