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