pve-zsync

   1 #!/usr/bin/perl
   2
   3 use strict;
   4 use warnings;
   5 use Data::Dumper qw(Dumper);
   6 use Fcntl qw(:flock SEEK_END);
   7 use Getopt::Long qw(GetOptionsFromArray);
   8 use File::Copy qw(move);
   9 use File::Path qw(make_path);
  10 use JSON;
  11 use IO::File;
  12 use String::ShellQuote 'shell_quote';
  13
  14 my $PROGNAME = "pve-zsync";
  15 my $CONFIG_PATH = "/var/lib/${PROGNAME}";
  16 my $STATE = "${CONFIG_PATH}/sync_state";
  17 my $CRONJOBS = "/etc/cron.d/$PROGNAME";
  18 my $PATH = "/usr/sbin";
  19 my $PVE_DIR = "/etc/pve/local";
  20 my $QEMU_CONF = "${PVE_DIR}/qemu-server";
  21 my $LXC_CONF = "${PVE_DIR}/lxc";
  22 my $LOCKFILE = "$CONFIG_PATH/${PROGNAME}.lock";
  23 my $PROG_PATH = "$PATH/${PROGNAME}";
  24 my $INTERVAL = 15;
  25 my $DEBUG = 0;
  26
  27 my $IPV4OCTET = "(?:25[0-5]|(?:[1-9]|1[0-9]|2[0-4])?[0-9])";
  28 my $IPV4RE = "(?:(?:$IPV4OCTET\\.){3}$IPV4OCTET)";
  29 my $IPV6H16 = "(?:[0-9a-fA-F]{1,4})";
  30 my $IPV6LS32 = "(?:(?:$IPV4RE|$IPV6H16:$IPV6H16))";
  31
  32 my $IPV6RE = "(?:" .
  33     "(?:(?:" .                             "(?:$IPV6H16:){6})$IPV6LS32)|" .
  34     "(?:(?:" .                           "::(?:$IPV6H16:){5})$IPV6LS32)|" .
  35     "(?:(?:(?:" .              "$IPV6H16)?::(?:$IPV6H16:){4})$IPV6LS32)|" .
  36     "(?:(?:(?:(?:$IPV6H16:){0,1}$IPV6H16)?::(?:$IPV6H16:){3})$IPV6LS32)|" .
  37     "(?:(?:(?:(?:$IPV6H16:){0,2}$IPV6H16)?::(?:$IPV6H16:){2})$IPV6LS32)|" .
  38     "(?:(?:(?:(?:$IPV6H16:){0,3}$IPV6H16)?::(?:$IPV6H16:){1})$IPV6LS32)|" .
  39     "(?:(?:(?:(?:$IPV6H16:){0,4}$IPV6H16)?::" .           ")$IPV6LS32)|" .
  40     "(?:(?:(?:(?:$IPV6H16:){0,5}$IPV6H16)?::" .            ")$IPV6H16)|" .
  41     "(?:(?:(?:(?:$IPV6H16:){0,6}$IPV6H16)?::" .                    ")))";
  42
  43 my $HOSTv4RE0 = "(?:[\\w\\.\\-_]+|$IPV4RE)";       # hostname or ipv4 address
  44 my $HOSTv4RE1 = "(?:$HOSTv4RE0|\\[$HOSTv4RE0\\])"; # these may be in brackets, too
  45 my $HOSTRE = "(?:$HOSTv4RE1|\\[$IPV6RE\\])";       # ipv6 must always be in brackets
  46 # targets are either a VMID, or a 'host:zpool/path' with 'host:' being optional
  47 my $TARGETRE = qr!^(?:($HOSTRE):)?(\d+|(?:[\w\-_]+)(/.+)?)$!;
  48
  49 check_bin ('cstream');
  50 check_bin ('zfs');
  51 check_bin ('ssh');
  52 check_bin ('scp');
  53
  54 $SIG{TERM} = $SIG{QUIT} = $SIG{PIPE} = $SIG{HUP} = $SIG{KILL} = $SIG{INT} =
  55     sub {
  56         die "Signal aborting sync\n";
  57     };
  58
  59 sub check_bin {
  60     my ($bin)  = @_;
  61
  62     foreach my $p (split (/:/, $ENV{PATH})) {
  63         my $fn = "$p/$bin";
  64         if (-x $fn) {
  65             return $fn;
  66         }
  67     }
  68
  69     die "unable to find command '$bin'\n";
  70 }
  71
  72 sub cut_target_width {
  73     my ($path, $maxlen) = @_;
  74     $path =~ s@/+@/@g;
  75
  76     return $path if length($path) <= $maxlen;
  77
  78     return '..'.substr($path, -$maxlen+2) if $path !~ m@/@;
  79
  80     $path =~ s@/([^/]+/?)$@@;
  81     my $tail = $1;
  82
  83     if (length($tail)+3 == $maxlen) {
  84         return "../$tail";
  85     } elsif (length($tail)+2 >= $maxlen) {
  86         return '..'.substr($tail, -$maxlen+2)
  87     }
  88
  89     $path =~ s@(/[^/]+)(?:/|$)@@;
  90     my $head = $1;
  91     my $both = length($head) + length($tail);
  92     my $remaining = $maxlen-$both-4; # -4 for "/../"
  93
  94     if ($remaining < 0) {
  95         return substr($head, 0, $maxlen - length($tail) - 3) . "../$tail"; # -3 for "../"
  96     }
  97
  98     substr($path, ($remaining/2), (length($path)-$remaining), '..');
  99     return "$head/" . $path . "/$tail";
 100 }
 101
 102 sub lock {
 103     my ($fh) = @_;
 104     flock($fh, LOCK_EX) || die "Can't lock config - $!\n";
 105 }
 106
 107 sub unlock {
 108     my ($fh) = @_;
 109     flock($fh, LOCK_UN) || die "Can't unlock config- $!\n";
 110 }
 111
 112 sub get_status {
 113     my ($source, $name, $status) = @_;
 114
 115     if ($status->{$source->{all}}->{$name}->{status}) {
 116         return $status;
 117     }
 118
 119     return undef;
 120 }
 121
 122 sub check_pool_exists {
 123     my ($target) = @_;
 124
 125     my $cmd = [];
 126
 127     if ($target->{ip}) {
 128         push @$cmd, 'ssh', "root\@$target->{ip}", '--';
 129     }
 130     push @$cmd, 'zfs', 'list', '-H', '--', $target->{all};
 131     eval {
 132         run_cmd($cmd);
 133     };
 134
 135     if ($@) {
 136         return 0;
 137     }
 138     return 1;
 139 }
 140
 141 sub parse_target {
 142     my ($text) = @_;
 143
 144     my $errstr = "$text : is not a valid input! Use [IP:]<VMID> or [IP:]<ZFSPool>[/Path]";
 145     my $target = {};
 146
 147     if ($text !~ $TARGETRE) {
 148         die "$errstr\n";
 149     }
 150     $target->{all} = $2;
 151     $target->{ip} = $1 if $1;
 152     my @parts = split('/', $2);
 153
 154     $target->{ip} =~ s/^\[(.*)\]$/$1/ if $target->{ip};
 155
 156     my $pool = $target->{pool} = shift(@parts);
 157     die "$errstr\n" if !$pool;
 158
 159     if ($pool =~ m/^\d+$/) {
 160         $target->{vmid} = $pool;
 161         delete $target->{pool};
 162     }
 163
 164     return $target if (@parts == 0);
 165     $target->{last_part} = pop(@parts);
 166
 167     if ($target->{ip}) {
 168         pop(@parts);
 169     }
 170     if (@parts > 0) {
 171         $target->{path} = join('/', @parts);
 172     }
 173
 174     return $target;
 175 }
 176
 177 sub read_cron {
 178
 179     #This is for the first use to init file;
 180     if (!-e $CRONJOBS) {
 181         my $new_fh = IO::File->new("> $CRONJOBS");
 182         die "Could not create $CRONJOBS: $!\n" if !$new_fh;
 183         close($new_fh);
 184         return undef;
 185     }
 186
 187     my $fh = IO::File->new("< $CRONJOBS");
 188     die "Could not open file $CRONJOBS: $!\n" if !$fh;
 189
 190     my @text = <$fh>;
 191
 192     close($fh);
 193
 194     return encode_cron(@text);
 195 }
 196
 197 sub parse_argv {
 198     my (@arg) = @_;
 199
 200     my $param = {};
 201     $param->{dest} = undef;
 202     $param->{source} = undef;
 203     $param->{verbose} = undef;
 204     $param->{limit} = undef;
 205     $param->{maxsnap} = undef;
 206     $param->{name} = undef;
 207     $param->{skip} = undef;
 208     $param->{method} = undef;
 209
 210     my ($ret, $ar) = GetOptionsFromArray(\@arg,
 211                                          'dest=s' => \$param->{dest},
 212                                          'source=s' => \$param->{source},
 213                                          'verbose' => \$param->{verbose},
 214                                          'limit=i' => \$param->{limit},
 215                                          'maxsnap=i' => \$param->{maxsnap},
 216                                          'name=s' => \$param->{name},
 217                                          'skip' => \$param->{skip},
 218                                          'method=s' => \$param->{method});
 219
 220     if ($ret == 0) {
 221         die "can't parse options\n";
 222     }
 223
 224     $param->{name} = "default" if !$param->{name};
 225     $param->{maxsnap} = 1 if !$param->{maxsnap};
 226     $param->{method} = "ssh" if !$param->{method};
 227
 228     return $param;
 229 }
 230
 231 sub add_state_to_job {
 232     my ($job) = @_;
 233
 234     my $states = read_state();
 235     my $state = $states->{$job->{source}}->{$job->{name}};
 236
 237     $job->{state} = $state->{state};
 238     $job->{lsync} = $state->{lsync};
 239     $job->{vm_type} = $state->{vm_type};
 240
 241     for (my $i = 0; $state->{"snap$i"}; $i++) {
 242         $job->{"snap$i"} = $state->{"snap$i"};
 243     }
 244
 245     return $job;
 246 }
 247
 248 sub encode_cron {
 249     my (@text) = @_;
 250
 251     my $cfg = {};
 252
 253     while (my $line = shift(@text)) {
 254
 255         my @arg = split('\s', $line);
 256         my $param = parse_argv(@arg);
 257
 258         if ($param->{source} && $param->{dest}) {
 259             $cfg->{$param->{source}}->{$param->{name}}->{dest} = $param->{dest};
 260             $cfg->{$param->{source}}->{$param->{name}}->{verbose} = $param->{verbose};
 261             $cfg->{$param->{source}}->{$param->{name}}->{limit} = $param->{limit};
 262             $cfg->{$param->{source}}->{$param->{name}}->{maxsnap} = $param->{maxsnap};
 263             $cfg->{$param->{source}}->{$param->{name}}->{skip} = $param->{skip};
 264             $cfg->{$param->{source}}->{$param->{name}}->{method} = $param->{method};
 265         }
 266     }
 267
 268     return $cfg;
 269 }
 270
 271 sub param_to_job {
 272     my ($param) = @_;
 273
 274     my $job = {};
 275
 276     my $source = parse_target($param->{source});
 277     my $dest = parse_target($param->{dest}) if $param->{dest};
 278
 279     $job->{name} = !$param->{name} ? "default" : $param->{name};
 280     $job->{dest} = $param->{dest} if $param->{dest};
 281     $job->{method} = "local" if !$dest->{ip} && !$source->{ip};
 282     $job->{method} = "ssh" if !$job->{method};
 283     $job->{limit} = $param->{limit};
 284     $job->{maxsnap} = $param->{maxsnap} if $param->{maxsnap};
 285     $job->{source} = $param->{source};
 286
 287     return $job;
 288 }
 289
 290 sub read_state {
 291
 292     if (!-e $STATE) {
 293         make_path $CONFIG_PATH;
 294         my $new_fh = IO::File->new("> $STATE");
 295         die "Could not create $STATE: $!\n" if !$new_fh;
 296         print $new_fh "{}";
 297         close($new_fh);
 298         return undef;
 299     }
 300
 301     my $fh = IO::File->new("< $STATE");
 302     die "Could not open file $STATE: $!\n" if !$fh;
 303
 304     my $text = <$fh>;
 305     my $states = decode_json($text);
 306
 307     close($fh);
 308
 309     return $states;
 310 }
 311
 312 sub update_state {
 313     my ($job) = @_;
 314     my $text;
 315     my $in_fh;
 316
 317     eval {
 318
 319         $in_fh = IO::File->new("< $STATE");
 320         die "Could not open file $STATE: $!\n" if !$in_fh;
 321         lock($in_fh);
 322         $text = <$in_fh>;
 323     };
 324
 325     my $out_fh = IO::File->new("> $STATE.new");
 326     die "Could not open file ${STATE}.new: $!\n" if !$out_fh;
 327
 328     my $states = {};
 329     my $state = {};
 330     if ($text){
 331         $states = decode_json($text);
 332         $state = $states->{$job->{source}}->{$job->{name}};
 333     }
 334
 335     if ($job->{state} ne "del") {
 336         $state->{state} = $job->{state};
 337         $state->{lsync} = $job->{lsync};
 338         $state->{vm_type} = $job->{vm_type};
 339
 340         for (my $i = 0; $job->{"snap$i"} ; $i++) {
 341             $state->{"snap$i"} = $job->{"snap$i"};
 342         }
 343         $states->{$job->{source}}->{$job->{name}} = $state;
 344     } else {
 345
 346         delete $states->{$job->{source}}->{$job->{name}};
 347         delete $states->{$job->{source}} if !keys %{$states->{$job->{source}}};
 348     }
 349
 350     $text = encode_json($states);
 351     print $out_fh $text;
 352
 353     close($out_fh);
 354     move("$STATE.new", $STATE);
 355     eval {
 356         close($in_fh);
 357     };
 358
 359     return $states;
 360 }
 361
 362 sub update_cron {
 363     my ($job) = @_;
 364
 365     my $updated;
 366     my $has_header;
 367     my $line_no = 0;
 368     my $text = "";
 369     my $header = "SHELL=/bin/sh\n";
 370     $header .= "PATH=/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin\n\n";
 371
 372     my $fh = IO::File->new("< $CRONJOBS");
 373     die "Could not open file $CRONJOBS: $!\n" if !$fh;
 374     lock($fh);
 375
 376     my @test = <$fh>;
 377
 378     while (my $line = shift(@test)) {
 379         chomp($line);
 380         if ($line =~ m/source $job->{source} .*name $job->{name} /) {
 381             $updated = 1;
 382             next if $job->{state} eq "del";
 383             $text .= format_job($job, $line);
 384         } else {
 385             if (($line_no < 3) && ($line =~ /^(PATH|SHELL)/ )) {
 386                 $has_header = 1;
 387             }
 388             $text .= "$line\n";
 389         }
 390         $line_no++;
 391     }
 392
 393     if (!$has_header) {
 394         $text = "$header$text";
 395     }
 396
 397     if (!$updated) {
 398         $text .= format_job($job);
 399     }
 400     my $new_fh = IO::File->new("> ${CRONJOBS}.new");
 401     die "Could not open file ${CRONJOBS}.new: $!\n" if !$new_fh;
 402
 403     die "can't write to $CRONJOBS.new\n" if !print($new_fh $text);
 404     close ($new_fh);
 405
 406     die "can't move $CRONJOBS.new: $!\n" if !move("${CRONJOBS}.new", "$CRONJOBS");
 407     close ($fh);
 408 }
 409
 410 sub format_job {
 411     my ($job, $line) = @_;
 412     my $text = "";
 413
 414     if ($job->{state} eq "stopped") {
 415         $text = "#";
 416     }
 417     if ($line) {
 418         $line =~ /^#*(.+) root/;
 419         $text .= $1;
 420     } else {
 421         $text .= "*/$INTERVAL * * * *";
 422     }
 423     $text .= " root";
 424     $text .= " $PROGNAME sync --source $job->{source} --dest $job->{dest}";
 425     $text .= " --name $job->{name} --maxsnap $job->{maxsnap}";
 426     $text .= " --limit $job->{limit}" if $job->{limit};
 427     $text .= " --method $job->{method}";
 428     $text .= " --verbose" if $job->{verbose};
 429     $text .= "\n";
 430
 431     return $text;
 432 }
 433
 434 sub list {
 435
 436     my $cfg = read_cron();
 437
 438     my $list = sprintf("%-25s%-25s%-10s%-20s%-6s%-5s\n" , "SOURCE", "NAME", "STATE", "LAST SYNC", "TYPE", "CON");
 439
 440     my $states = read_state();
 441     foreach my $source (sort keys%{$cfg}) {
 442         foreach my $name (sort keys%{$cfg->{$source}}) {
 443             $list .= sprintf("%-25s", cut_target_width($source, 25));
 444             $list .= sprintf("%-25s", cut_target_width($name, 25));
 445             $list .= sprintf("%-10s", $states->{$source}->{$name}->{state});
 446             $list .= sprintf("%-20s", $states->{$source}->{$name}->{lsync});
 447             $list .= sprintf("%-6s", defined($states->{$source}->{$name}->{vm_type}) ? $states->{$source}->{$name}->{vm_type} : "undef");
 448             $list .= sprintf("%-5s\n", $cfg->{$source}->{$name}->{method});
 449         }
 450     }
 451
 452     return $list;
 453 }
 454
 455 sub vm_exists {
 456     my ($target) = @_;
 457
 458     my @cmd = ('ssh', "root\@$target->{ip}", '--') if $target->{ip};
 459
 460     my $res = undef;
 461
 462     return undef if !defined($target->{vmid});
 463
 464     eval { $res = run_cmd([@cmd, 'ls',  "$QEMU_CONF/$target->{vmid}.conf"]) };
 465
 466     return "qemu" if $res;
 467
 468     eval { $res = run_cmd([@cmd, 'ls',  "$LXC_CONF/$target->{vmid}.conf"]) };
 469
 470     return "lxc" if $res;
 471
 472     return undef;
 473 }
 474
 475 sub init {
 476     my ($param) = @_;
 477
 478     my $cfg = read_cron();
 479
 480     my $job = param_to_job($param);
 481
 482     $job->{state} = "ok";
 483     $job->{lsync} = 0;
 484
 485     my $source = parse_target($param->{source});
 486     my $dest = parse_target($param->{dest});
 487
 488     if (my $ip =  $dest->{ip}) {
 489         run_cmd(['ssh-copy-id', '-i', '/root/.ssh/id_rsa.pub', "root\@$ip"]);
 490     }
 491
 492     if (my $ip =  $source->{ip}) {
 493         run_cmd(['ssh-copy-id', '-i', '/root/.ssh/id_rsa.pub', "root\@$ip"]);
 494     }
 495
 496     die "Pool $dest->{all} does not exists\n" if !check_pool_exists($dest);
 497
 498     if (!defined($source->{vmid})) {
 499         die "Pool $source->{all} does not exists\n" if !check_pool_exists($source);
 500     }
 501
 502     my $vm_type = vm_exists($source);
 503     $job->{vm_type} = $vm_type;
 504     $source->{vm_type} = $vm_type;
 505
 506     die "VM $source->{vmid} doesn't exist\n" if $source->{vmid} && !$vm_type;
 507
 508     die "Config already exists\n" if $cfg->{$job->{source}}->{$job->{name}};
 509
 510     #check if vm has zfs disks if not die;
 511     get_disks($source) if $source->{vmid};
 512
 513     update_cron($job);
 514     update_state($job);
 515
 516     eval {
 517         sync($param) if !$param->{skip};
 518     };
 519     if(my $err = $@) {
 520         destroy_job($param);
 521         print $err;
 522     }
 523 }
 524
 525 sub get_job {
 526     my ($param) = @_;
 527
 528     my $cfg = read_cron();
 529
 530     if (!$cfg->{$param->{source}}->{$param->{name}}) {
 531         die "Job  with source $param->{source} and name $param->{name} does not exist\n" ;
 532     }
 533     my $job = $cfg->{$param->{source}}->{$param->{name}};
 534     $job->{name} = $param->{name};
 535     $job->{source} = $param->{source};
 536     $job = add_state_to_job($job);
 537
 538     return $job;
 539 }
 540
 541 sub destroy_job {
 542     my ($param) = @_;
 543
 544     my $job = get_job($param);
 545     $job->{state} = "del";
 546
 547     update_cron($job);
 548     update_state($job);
 549 }
 550
 551 sub sync {
 552     my ($param) = @_;
 553
 554     my $lock_fh = IO::File->new("> $LOCKFILE");
 555     die "Can't open Lock File: $LOCKFILE $!\n" if !$lock_fh;
 556     lock($lock_fh);
 557
 558     my $date = get_date();
 559     my $job;
 560     eval {
 561         $job = get_job($param);
 562     };
 563
 564     if ($job && $job->{state} eq "syncing") {
 565         die "Job --source $param->{source} --name $param->{name} is syncing at the moment";
 566     }
 567
 568     my $dest = parse_target($param->{dest});
 569     my $source = parse_target($param->{source});
 570
 571     my $sync_path = sub {
 572         my ($source, $dest, $job, $param, $date) = @_;
 573
 574         ($source->{old_snap}, $source->{last_snap}) = snapshot_get($source, $dest, $param->{maxsnap}, $param->{name});
 575
 576         snapshot_add($source, $dest, $param->{name}, $date);
 577
 578         send_image($source, $dest, $param);
 579
 580         snapshot_destroy($source, $dest, $param->{method}, $source->{old_snap}) if ($source->{destroy} && $source->{old_snap});
 581
 582     };
 583
 584     my $vm_type = vm_exists($source);
 585     $source->{vm_type} = $vm_type;
 586
 587     if ($job) {
 588         $job->{state} = "syncing";
 589         $job->{vm_type} = $vm_type if !$job->{vm_type};
 590         update_state($job);
 591     }
 592
 593     eval{
 594         if ($source->{vmid}) {
 595             die "VM $source->{vmid} doesn't exist\n" if !$vm_type;
 596             my $disks = get_disks($source);
 597
 598             foreach my $disk (sort keys %{$disks}) {
 599                 $source->{all} = $disks->{$disk}->{all};
 600                 $source->{pool} = $disks->{$disk}->{pool};
 601                 $source->{path} = $disks->{$disk}->{path} if $disks->{$disk}->{path};
 602                 $source->{last_part} = $disks->{$disk}->{last_part};
 603                 &$sync_path($source, $dest, $job, $param, $date);
 604             }
 605             if ($param->{method} eq "ssh" && ($source->{ip} || $dest->{ip})) {
 606                 send_config($source, $dest,'ssh');
 607             } else {
 608                 send_config($source, $dest,'local');
 609             }
 610         } else {
 611             &$sync_path($source, $dest, $job, $param, $date);
 612         }
 613     };
 614     if(my $err = $@) {
 615         if ($job) {
 616             $job->{state} = "error";
 617             update_state($job);
 618             unlock($lock_fh);
 619             close($lock_fh);
 620             print "Job --source $param->{source} --name $param->{name} got an ERROR!!!\nERROR Message:\n";
 621         }
 622         die "$err\n";
 623     }
 624
 625     if ($job) {
 626         $job->{state} = "ok";
 627         $job->{lsync} = $date;
 628         update_state($job);
 629     }
 630
 631     unlock($lock_fh);
 632     close($lock_fh);
 633 }
 634
 635 sub snapshot_get{
 636     my ($source, $dest, $max_snap, $name) = @_;
 637
 638     my $cmd = [];
 639     push @$cmd, 'ssh', "root\@$source->{ip}", '--', if $source->{ip};
 640     push @$cmd, 'zfs', 'list', '-r', '-t', 'snapshot', '-Ho', 'name', '-S', 'creation';
 641     push @$cmd, $source->{all};
 642
 643     my $raw = run_cmd($cmd);
 644     my $index = 0;
 645     my $line = "";
 646     my $last_snap = undef;
 647     my $old_snap;
 648
 649     while ($raw && $raw =~ s/^(.*?)(\n|$)//) {
 650         $line = $1;
 651         if ($line =~ m/(rep_\Q${name}\E_\d{4}-\d{2}-\d{2}_\d{2}:\d{2}:\d{2})$/) {
 652
 653             $last_snap = $1 if (!$last_snap);
 654             $old_snap = $1;
 655             $index++;
 656             if ($index == $max_snap) {
 657                 $source->{destroy} = 1;
 658                 last;
 659             };
 660         }
 661     }
 662
 663     return ($old_snap, $last_snap) if $last_snap;
 664
 665     return undef;
 666 }
 667
 668 sub snapshot_add {
 669     my ($source, $dest, $name, $date) = @_;
 670
 671     my $snap_name = "rep_$name\_".$date;
 672
 673     $source->{new_snap} = $snap_name;
 674
 675     my $path = "$source->{all}\@$snap_name";
 676
 677     my $cmd = [];
 678     push @$cmd, 'ssh', "root\@$source->{ip}", '--', if $source->{ip};
 679     push @$cmd, 'zfs', 'snapshot', $path;
 680     eval{
 681         run_cmd($cmd);
 682     };
 683
 684     if (my $err = $@) {
 685         snapshot_destroy($source, $dest, 'ssh', $snap_name);
 686         die "$err\n";
 687     }
 688 }
 689
 690 sub write_cron {
 691     my ($cfg) = @_;
 692
 693     my $text = "SHELL=/bin/sh\n";
 694     $text .= "PATH=/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin\n";
 695
 696     my $fh = IO::File->new("> $CRONJOBS");
 697     die "Could not open file: $!\n" if !$fh;
 698
 699     foreach my $source (sort keys%{$cfg}) {
 700         foreach my $sync_name (sort keys%{$cfg->{$source}}) {
 701             next if $cfg->{$source}->{$sync_name}->{status} ne 'ok';
 702             $text .= "$PROG_PATH sync";
 703             $text .= " -source  ";
 704             if ($cfg->{$source}->{$sync_name}->{vmid}) {
 705                 $text .= "$cfg->{$source}->{$sync_name}->{source_ip}:" if $cfg->{$source}->{$sync_name}->{source_ip};
 706                 $text .= "$cfg->{$source}->{$sync_name}->{vmid} ";
 707             } else {
 708                 $text .= "$cfg->{$source}->{$sync_name}->{source_ip}:" if $cfg->{$source}->{$sync_name}->{source_ip};
 709                 $text .= "$cfg->{$source}->{$sync_name}->{source_pool}";
 710                 $text .= "$cfg->{$source}->{$sync_name}->{source_path}" if $cfg->{$source}->{$sync_name}->{source_path};
 711             }
 712             $text .= " -dest  ";
 713             $text .= "$cfg->{$source}->{$sync_name}->{dest_ip}:" if $cfg->{$source}->{$sync_name}->{dest_ip};
 714             $text .= "$cfg->{$source}->{$sync_name}->{dest_pool}";
 715             $text .= "$cfg->{$source}->{$sync_name}->{dest_path}" if $cfg->{$source}->{$sync_name}->{dest_path};
 716             $text .= " -name $sync_name ";
 717             $text .= " -limit $cfg->{$source}->{$sync_name}->{limit}" if $cfg->{$source}->{$sync_name}->{limit};
 718             $text .= " -maxsnap $cfg->{$source}->{$sync_name}->{maxsnap}" if $cfg->{$source}->{$sync_name}->{maxsnap};
 719             $text .= "\n";
 720         }
 721     }
 722     die "Can't write to cron\n" if (!print($fh $text));
 723     close($fh);
 724 }
 725
 726 sub get_disks {
 727     my ($target) = @_;
 728
 729     my $cmd = [];
 730     push @$cmd, 'ssh', "root\@$target->{ip}", '--', if $target->{ip};
 731
 732     if ($target->{vm_type} eq 'qemu') {
 733         push @$cmd, 'qm', 'config', $target->{vmid};
 734     } elsif ($target->{vm_type} eq 'lxc') {
 735         push @$cmd, 'pct', 'config', $target->{vmid};
 736     } else {
 737         die "VM Type unknown\n";
 738     }
 739
 740     my $res = run_cmd($cmd);
 741
 742     my $disks = parse_disks($res, $target->{ip}, $target->{vm_type});
 743
 744     return $disks;
 745 }
 746
 747 sub run_cmd {
 748     my ($cmd) = @_;
 749     print "Start CMD\n" if $DEBUG;
 750     print Dumper $cmd if $DEBUG;
 751     if (ref($cmd) eq 'ARRAY') {
 752         $cmd = join(' ', map { ref($_) ? $$_ : shell_quote($_) } @$cmd);
 753     }
 754     my $output = `$cmd 2>&1`;
 755
 756     die "COMMAND:\n\t$cmd\nGET ERROR:\n\t$output" if 0 != $?;
 757
 758     chomp($output);
 759     print Dumper $output if $DEBUG;
 760     print "END CMD\n" if $DEBUG;
 761     return $output;
 762 }
 763
 764 sub parse_disks {
 765     my ($text, $ip, $vm_type) = @_;
 766
 767     my $disks;
 768
 769     my $num = 0;
 770     while ($text && $text =~ s/^(.*?)(\n|$)//) {
 771         my $line = $1;
 772
 773         next if $line =~ /media=cdrom/;
 774         next if $line !~ m/^(?:((?:virtio|ide|scsi|sata|mp)\d+)|rootfs): /;
 775
 776         #QEMU if backup is not set include in  sync
 777         next if $vm_type eq 'qemu' && ($line =~ m/backup=(?i:0|no|off|false)/);
 778
 779         #LXC if backup is not set do no in sync
 780         next if $vm_type eq 'lxc' && ($line =~ m/^mp\d:/) && ($line !~ m/backup=(?i:1|yes|on|true)/);
 781
 782         my $disk = undef;
 783         my $stor = undef;
 784         if($line =~ m/^(?:(?:(?:virtio|ide|scsi|sata|mp)\d+)|rootfs): (.*)$/) {
 785             my @parameter = split(/,/,$1);
 786
 787             foreach my $opt (@parameter) {
 788                 if ($opt =~ m/^(?:file=|volume=)?([^:]+:)([A-Za-z0-9\-]+)$/){
 789                     $disk = $2;
 790                     $stor = $1;
 791                     last;
 792                 }
 793             }
 794         }
 795         if (!defined($disk) || !defined($stor)) {
 796             print "Disk: \"$line\" has no valid zfs dataset format and will be skipped\n";
 797             next;
 798         }
 799
 800         my $cmd = [];
 801         push @$cmd, 'ssh', "root\@$ip", '--' if $ip;
 802         push @$cmd, 'pvesm', 'path', "$stor$disk";
 803         my $path = run_cmd($cmd);
 804
 805         die "Get no path from pvesm path $stor$disk\n" if !$path;
 806
 807         if ($vm_type eq 'qemu' && $path =~ m/^\/dev\/zvol\/(\w+.*)(\/$disk)$/) {
 808
 809             my @array = split('/', $1);
 810             $disks->{$num}->{pool} = shift(@array);
 811             $disks->{$num}->{all} = $disks->{$num}->{pool};
 812             if (0 < @array) {
 813                 $disks->{$num}->{path} = join('/', @array);
 814                 $disks->{$num}->{all} .= "\/$disks->{$num}->{path}";
 815             }
 816             $disks->{$num}->{last_part} = $disk;
 817             $disks->{$num}->{all} .= "\/$disk";
 818
 819             $num++;
 820         } elsif ($vm_type eq 'lxc' && $path =~ m/^\/(\w+.+)(\/(\w+.*))*(\/$disk)$/) {
 821
 822             $disks->{$num}->{pool} = $1;
 823             $disks->{$num}->{all} = $disks->{$num}->{pool};
 824
 825             if ($2) {
 826                 $disks->{$num}->{path} = $3;
 827                 $disks->{$num}->{all} .= "\/$disks->{$num}->{path}";
 828             }
 829
 830             $disks->{$num}->{last_part} = $disk;
 831             $disks->{$num}->{all} .= "\/$disk";
 832
 833             $num++;
 834
 835         } else {
 836             die "ERROR: in path\n";
 837         }
 838     }
 839
 840     die "Vm include no disk on zfs.\n" if !$disks->{0};
 841     return $disks;
 842 }
 843
 844 sub snapshot_destroy {
 845     my ($source, $dest, $method, $snap) = @_;
 846
 847     my @zfscmd = ('zfs', 'destroy');
 848     my $snapshot = "$source->{all}\@$snap";
 849
 850     eval {
 851         if($source->{ip} && $method eq 'ssh'){
 852             run_cmd(['ssh', "root\@$source->{ip}", '--', @zfscmd, $snapshot]);
 853         } else {
 854             run_cmd([@zfscmd, $snapshot]);
 855         }
 856     };
 857     if (my $erro = $@) {
 858         warn "WARN: $erro";
 859     }
 860     if ($dest) {
 861         my @ssh = $dest->{ip} ? ('ssh', "root\@$dest->{ip}", '--') : ();
 862
 863         my $path = "$dest->{all}\/$source->{last_part}";
 864
 865         eval {
 866             run_cmd([@ssh, @zfscmd, "$path\@$snap"]);
 867         };
 868         if (my $erro = $@) {
 869             warn "WARN: $erro";
 870         }
 871     }
 872 }
 873
 874 sub snapshot_exist {
 875     my ($source , $dest, $method) = @_;
 876
 877     my $cmd = [];
 878     push @$cmd, 'ssh', "root\@$dest->{ip}", '--' if $dest->{ip};
 879     push @$cmd, 'zfs', 'list', '-rt', 'snapshot', '-Ho', 'name';
 880     push @$cmd, "$dest->{all}/$source->{last_part}\@$source->{old_snap}";
 881
 882     my $text = "";
 883     eval {$text =run_cmd($cmd);};
 884     if (my $erro =$@) {
 885         warn "WARN: $erro";
 886         return undef;
 887     }
 888
 889     while ($text && $text =~ s/^(.*?)(\n|$)//) {
 890         my $line =$1;
 891         return 1 if $line =~ m/^.*$source->{old_snap}$/;
 892     }
 893 }
 894
 895 sub send_image {
 896     my ($source, $dest, $param) = @_;
 897
 898     my $cmd = [];
 899
 900     push @$cmd, 'ssh', '-o', 'BatchMode=yes', "root\@$source->{ip}", '--' if $source->{ip};
 901     push @$cmd, 'zfs', 'send';
 902     push @$cmd, '-v' if $param->{verbose};
 903
 904     if($source->{last_snap} && snapshot_exist($source , $dest, $param->{method})) {
 905         push @$cmd, '-i', "$source->{all}\@$source->{last_snap}";
 906     }
 907     push @$cmd, '--', "$source->{all}\@$source->{new_snap}";
 908
 909     if ($param->{limit}){
 910         my $bwl = $param->{limit}*1024;
 911         push @$cmd, \'|', 'cstream', '-t', $bwl;
 912     }
 913     my $target = "$dest->{all}/$source->{last_part}";
 914     $target =~ s!/+!/!g;
 915
 916     push @$cmd, \'|';
 917     push @$cmd, 'ssh', '-o', 'BatchMode=yes', "root\@$dest->{ip}", '--' if $dest->{ip};
 918     push @$cmd, 'zfs', 'recv', '-F', '--';
 919     push @$cmd, "$target";
 920
 921     eval {
 922         run_cmd($cmd)
 923     };
 924
 925     if (my $erro = $@) {
 926         snapshot_destroy($source, undef, $param->{method}, $source->{new_snap});
 927         die $erro;
 928     };
 929 }
 930
 931
 932 sub send_config{
 933     my ($source, $dest, $method) = @_;
 934
 935     my $source_target = $source->{vm_type} eq 'qemu' ? "$QEMU_CONF/$source->{vmid}.conf": "$LXC_CONF/$source->{vmid}.conf";
 936     my $dest_target_new ="$source->{vmid}.conf.$source->{vm_type}.$source->{new_snap}";
 937
 938     my $config_dir = $dest->{last_part} ?  "${CONFIG_PATH}/$dest->{last_part}" : $CONFIG_PATH;
 939
 940     $dest_target_new = $config_dir.'/'.$dest_target_new;
 941
 942     if ($method eq 'ssh'){
 943         if ($dest->{ip} && $source->{ip}) {
 944             run_cmd(['ssh', "root\@$dest->{ip}", '--', 'mkdir', '-p', '--', $config_dir]);
 945             run_cmd(['scp', '--', "root\@[$source->{ip}]:$source_target", "root\@[$dest->{ip}]:$dest_target_new"]);
 946         } elsif ($dest->{ip}) {
 947             run_cmd(['ssh', "root\@$dest->{ip}", '--', 'mkdir', '-p', '--', $config_dir]);
 948             run_cmd(['scp', '--', $source_target, "root\@[$dest->{ip}]:$dest_target_new"]);
 949         } elsif ($source->{ip}) {
 950             run_cmd(['mkdir', '-p', '--', $config_dir]);
 951             run_cmd(['scp', '--', "root\@[$source->{ip}]:$source_target", $dest_target_new]);
 952         }
 953
 954         if ($source->{destroy}){
 955             my $dest_target_old ="${config_dir}/$source->{vmid}.conf.$source->{vm_type}.$source->{old_snap}";
 956             if($dest->{ip}){
 957                 run_cmd(['ssh', "root\@$dest->{ip}", '--', 'rm', '-f', '--', $dest_target_old]);
 958             } else {
 959                 run_cmd(['rm', '-f', '--', $dest_target_old]);
 960             }
 961         }
 962     } elsif ($method eq 'local') {
 963         run_cmd(['mkdir', '-p', '--', $config_dir]);
 964         run_cmd(['cp', $source_target, $dest_target_new]);
 965     }
 966 }
 967
 968 sub get_date {
 969     my ($sec, $min, $hour, $mday, $mon, $year, $wday, $yday, $isdst) = localtime(time);
 970     my $datestamp = sprintf ("%04d-%02d-%02d_%02d:%02d:%02d", $year+1900, $mon+1, $mday, $hour, $min, $sec);
 971
 972     return $datestamp;
 973 }
 974
 975 sub status {
 976     my $cfg = read_cron();
 977
 978     my $status_list = sprintf("%-25s%-25s%-10s\n", "SOURCE", "NAME", "STATUS");
 979
 980     my $states = read_state();
 981
 982     foreach my $source (sort keys%{$cfg}) {
 983         foreach my $sync_name (sort keys%{$cfg->{$source}}) {
 984             $status_list .= sprintf("%-25s", cut_target_width($source, 25));
 985             $status_list .= sprintf("%-25s", cut_target_width($sync_name, 25));
 986             $status_list .= "$states->{$source}->{$sync_name}->{state}\n";
 987         }
 988     }
 989
 990     return $status_list;
 991 }
 992
 993 sub enable_job {
 994     my ($param) = @_;
 995
 996     my $job = get_job($param);
 997     $job->{state} = "ok";
 998     update_state($job);
 999     update_cron($job);
1000 }
1001
1002 sub disable_job {
1003     my ($param) = @_;
1004
1005     my $job = get_job($param);
1006     $job->{state} = "stopped";
1007     update_state($job);
1008     update_cron($job);
1009 }
1010
1011 my $command = $ARGV[0];
1012
1013 my $commands = {'destroy' => 1,
1014                 'create' => 1,
1015                 'sync' => 1,
1016                 'list' => 1,
1017                 'status' => 1,
1018                 'help' => 1,
1019                 'enable' => 1,
1020                 'disable' => 1};
1021
1022 if (!$command || !$commands->{$command}) {
1023     usage();
1024     die "\n";
1025 }
1026
1027 my $help_sync = <<EOF;
1028 $PROGNAME sync -dest <string> -source <string> [OPTIONS]\n
1029
1030         will sync one time
1031
1032         -dest      string
1033
1034                 the destination target is like [IP:]<Pool>[/Path]
1035
1036         -limit     integer
1037
1038                 max sync speed in kBytes/s, default unlimited
1039
1040         -maxsnap   integer
1041
1042                 how much snapshots will be kept before get erased, default 1
1043
1044         -name      string
1045
1046                 name of the sync job, if not set it is default.
1047                 It is only necessary if scheduler allready contains this source.
1048
1049         -source    string
1050
1051                 the source can be an <VMID> or [IP:]<ZFSPool>[/Path]
1052
1053         -verbose   boolean
1054
1055                 print out the sync progress.
1056 EOF
1057
1058 my $help_create = <<EOF;
1059 $PROGNAME create -dest <string> -source <string> [OPTIONS]
1060
1061         Create a sync Job
1062
1063         -dest      string
1064
1065                 the destination target is like [IP]:<Pool>[/Path]
1066
1067         -limit     integer
1068
1069                 max sync speed in kBytes/s, default unlimited
1070
1071         -maxsnap   string
1072
1073                 how much snapshots will be kept before get erased, default 1
1074
1075         -name      string
1076
1077                 name of the sync job, if not set it is default
1078
1079         -skip      boolean
1080
1081                 if this flag is set it will skip the first sync
1082
1083         -source    string
1084
1085                 the source can be an <VMID> or [IP:]<ZFSPool>[/Path]
1086 EOF
1087
1088 my $help_destroy = <<EOF;
1089 $PROGNAME destroy -source <string> [OPTIONS]
1090
1091         remove a sync Job from the scheduler
1092
1093         -name      string
1094
1095                 name of the sync job, if not set it is default
1096
1097         -source    string
1098
1099                 the source can be an  <VMID> or [IP:]<ZFSPool>[/Path]
1100 EOF
1101
1102 my $help_help = <<EOF;
1103 $PROGNAME help <cmd> [OPTIONS]
1104
1105         Get help about specified command.
1106
1107         <cmd>      string
1108
1109                 Command name
1110
1111         -verbose   boolean
1112
1113                 Verbose output format.
1114 EOF
1115
1116 my $help_list = <<EOF;
1117 $PROGNAME list
1118
1119         Get a List of all scheduled Sync Jobs
1120 EOF
1121
1122 my $help_status = <<EOF;
1123 $PROGNAME status
1124
1125         Get the status of all scheduled Sync Jobs
1126 EOF
1127
1128 my $help_enable = <<EOF;
1129 $PROGNAME enable -source <string> [OPTIONS]
1130
1131         enable a syncjob and reset error
1132
1133         -name      string
1134
1135                 name of the sync job, if not set it is default
1136
1137         -source    string
1138
1139                 the source can be an  <VMID> or [IP:]<ZFSPool>[/Path]
1140 EOF
1141
1142 my $help_disable = <<EOF;
1143 $PROGNAME disable -source <string> [OPTIONS]
1144
1145         pause a sync job
1146
1147         -name      string
1148
1149                 name of the sync job, if not set it is default
1150
1151         -source    string
1152
1153                 the source can be an  <VMID> or [IP:]<ZFSPool>[/Path]
1154 EOF
1155
1156 sub help {
1157     my ($command) = @_;
1158
1159     if ($command eq 'help') {
1160         die "$help_help\n";
1161
1162     } elsif ($command eq 'sync') {
1163         die "$help_sync\n";
1164
1165     } elsif ($command eq 'destroy') {
1166         die "$help_destroy\n";
1167
1168     } elsif ($command eq 'create') {
1169         die "$help_create\n";
1170
1171     } elsif ($command eq 'list') {
1172         die "$help_list\n";
1173
1174     } elsif ($command eq 'status') {
1175         die "$help_status\n";
1176
1177     } elsif ($command eq 'enable') {
1178         die "$help_enable\n";
1179
1180     } elsif ($command eq 'disable') {
1181         die "$help_disable\n";
1182
1183     }
1184
1185 }
1186
1187 my @arg = @ARGV;
1188 my $param = parse_argv(@arg);
1189
1190 if ($command eq 'destroy') {
1191     die "$help_destroy\n" if !$param->{source};
1192
1193     check_target($param->{source});
1194     destroy_job($param);
1195
1196 } elsif ($command eq 'sync') {
1197     die "$help_sync\n" if !$param->{source} || !$param->{dest};
1198
1199     check_target($param->{source});
1200     check_target($param->{dest});
1201     sync($param);
1202
1203 } elsif ($command eq 'create') {
1204     die "$help_create\n" if !$param->{source} || !$param->{dest};
1205
1206     check_target($param->{source});
1207     check_target($param->{dest});
1208     init($param);
1209
1210 } elsif ($command eq 'status') {
1211     print status();
1212
1213 } elsif ($command eq 'list') {
1214     print list();
1215
1216 } elsif ($command eq 'help') {
1217     my $help_command = $ARGV[1];
1218
1219     if ($help_command && $commands->{$help_command}) {
1220         print help($help_command);
1221
1222     }
1223     if ($param->{verbose}) {
1224         exec("man $PROGNAME");
1225
1226     } else {
1227         usage(1);
1228
1229     }
1230
1231 } elsif ($command eq 'enable') {
1232     die "$help_enable\n" if !$param->{source};
1233
1234     check_target($param->{source});
1235     enable_job($param);
1236
1237 } elsif ($command eq 'disable') {
1238     die "$help_disable\n" if !$param->{source};
1239
1240     check_target($param->{source});
1241     disable_job($param);
1242
1243 }
1244
1245 sub usage {
1246     my ($help) = @_;
1247
1248     print("ERROR:\tno command specified\n") if !$help;
1249     print("USAGE:\t$PROGNAME <COMMAND> [ARGS] [OPTIONS]\n");
1250     print("\t$PROGNAME help [<cmd>] [OPTIONS]\n\n");
1251     print("\t$PROGNAME create -dest <string> -source <string> [OPTIONS]\n");
1252     print("\t$PROGNAME destroy -source <string> [OPTIONS]\n");
1253     print("\t$PROGNAME disable -source <string> [OPTIONS]\n");
1254     print("\t$PROGNAME enable -source <string> [OPTIONS]\n");
1255     print("\t$PROGNAME list\n");
1256     print("\t$PROGNAME status\n");
1257     print("\t$PROGNAME sync -dest <string> -source <string> [OPTIONS]\n");
1258 }
1259
1260 sub check_target {
1261     my ($target) = @_;
1262     parse_target($target);
1263 }
1264
1265 __END__
1266
1267 =head1 NAME
1268
1269 pve-zsync - PVE ZFS Replication Manager
1270
1271 =head1 SYNOPSIS
1272
1273 pve-zsync <COMMAND> [ARGS] [OPTIONS]
1274
1275 pve-zsync help <cmd> [OPTIONS]
1276
1277         Get help about specified command.
1278
1279         <cmd>      string
1280
1281                 Command name
1282
1283         -verbose   boolean
1284
1285                 Verbose output format.
1286
1287 pve-zsync create -dest <string> -source <string> [OPTIONS]
1288
1289         Create a sync Job
1290
1291         -dest      string
1292
1293                 the destination target is like [IP]:<Pool>[/Path]
1294
1295         -limit     integer
1296
1297                 max sync speed in kBytes/s, default unlimited
1298
1299         -maxsnap   string
1300
1301                 how much snapshots will be kept before get erased, default 1
1302
1303         -name      string
1304
1305                 name of the sync job, if not set it is default
1306
1307         -skip      boolean
1308
1309                 if this flag is set it will skip the first sync
1310
1311         -source    string
1312
1313                 the source can be an <VMID> or [IP:]<ZFSPool>[/Path]
1314
1315 pve-zsync destroy -source <string> [OPTIONS]
1316
1317         remove a sync Job from the scheduler
1318
1319         -name      string
1320
1321                 name of the sync job, if not set it is default
1322
1323         -source    string
1324
1325                 the source can be an  <VMID> or [IP:]<ZFSPool>[/Path]
1326
1327 pve-zsync disable -source <string> [OPTIONS]
1328
1329         pause a sync job
1330
1331         -name      string
1332
1333                 name of the sync job, if not set it is default
1334
1335         -source    string
1336
1337                 the source can be an  <VMID> or [IP:]<ZFSPool>[/Path]
1338
1339 pve-zsync enable -source <string> [OPTIONS]
1340
1341         enable a syncjob and reset error
1342
1343         -name      string
1344
1345                 name of the sync job, if not set it is default
1346
1347         -source    string
1348
1349                 the source can be an  <VMID> or [IP:]<ZFSPool>[/Path]
1350 pve-zsync list
1351
1352         Get a List of all scheduled Sync Jobs
1353
1354 pve-zsync status
1355
1356         Get the status of all scheduled Sync Jobs
1357
1358 pve-zsync sync -dest <string> -source <string> [OPTIONS]
1359
1360         will sync one time
1361
1362         -dest      string
1363
1364                 the destination target is like [IP:]<Pool>[/Path]
1365
1366         -limit     integer
1367
1368                 max sync speed in kBytes/s, default unlimited
1369
1370         -maxsnap   integer
1371
1372                 how much snapshots will be kept before get erased, default 1
1373
1374         -name      string
1375
1376                 name of the sync job, if not set it is default.
1377                 It is only necessary if scheduler allready contains this source.
1378
1379         -source    string
1380
1381                 the source can be an <VMID> or [IP:]<ZFSPool>[/Path]
1382
1383         -verbose   boolean
1384
1385                 print out the sync progress.
1386
1387 =head1 DESCRIPTION
1388
1389 This Tool helps you to sync your VM or directory which stored on ZFS between 2 servers.
1390 This tool also has the capability to add jobs to cron so the sync will be automatically done.
1391 The default syncing interval is set to 15 min, if you want to change this value you can do this in /etc/cron.d/pve-zsync.
1392 To config cron see man crontab.
1393
1394 =head2 PVE ZFS Storage sync Tool
1395
1396 This Tool can get remote pool on other PVE or send Pool to others ZFS machines
1397
1398 =head1 EXAMPLES
1399
1400 add sync job from local VM to remote ZFS Server
1401 pve-zsync create -source=100 -dest=192.168.1.2:zfspool
1402
1403 =head1 IMPORTANT FILES
1404
1405 Cron jobs and config are stored at                      /etc/cron.d/pve-zsync
1406
1407 The VM config get copied on the destination machine to  /var/lib/pve-zsync/
1408
1409 =head1 COPYRIGHT AND DISCLAIMER
1410
1411 Copyright (C) 2007-2015 Proxmox Server Solutions GmbH
1412
1413 This program is free software: you can redistribute it and/or modify it
1414 under the terms of the GNU Affero General Public License as published
1415 by the Free Software Foundation, either version 3 of the License, or
1416 (at your option) any later version.
1417
1418 This program is distributed in the hope that it will be useful, but
1419 WITHOUT ANY WARRANTY; without even the implied warranty of
1420 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
1421 Affero General Public License for more details.
1422
1423 You should have received a copy of the GNU Affero General Public
1424 License along with this program.  If not, see
1425 <http://www.gnu.org/licenses/>.