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