1 package PVE
::QemuMigrate
;
5 use PVE
::AbstractMigrate
;
8 use POSIX
qw( WNOHANG );
14 use Time
::HiRes
qw( usleep );
15 use PVE
::RPCEnvironment
;
16 use PVE
::ReplicationConfig
;
17 use PVE
::ReplicationState
;
20 use base
qw(PVE::AbstractMigrate);
22 sub fork_command_pipe
{
23 my ($self, $cmd) = @_;
25 my $reader = IO
::File-
>new();
26 my $writer = IO
::File-
>new();
32 eval { $cpid = open2
($reader, $writer, @$cmd); };
37 if ($orig_pid != $$) {
38 $self->log('err', "can't fork command pipe\n");
45 return { writer
=> $writer, reader
=> $reader, pid
=> $cpid };
48 sub finish_command_pipe
{
49 my ($self, $cmdpipe, $timeout) = @_;
51 my $cpid = $cmdpipe->{pid
};
52 return if !defined($cpid);
54 my $writer = $cmdpipe->{writer
};
55 my $reader = $cmdpipe->{reader
};
60 my $collect_child_process = sub {
61 my $res = waitpid($cpid, WNOHANG
);
62 if (defined($res) && ($res == $cpid)) {
63 delete $cmdpipe->{cpid
};
71 for (my $i = 0; $i < $timeout; $i++) {
72 return if &$collect_child_process();
77 $self->log('info', "ssh tunnel still running - terminating now with SIGTERM\n");
81 for (my $i = 0; $i < 10; $i++) {
82 return if &$collect_child_process();
86 $self->log('info', "ssh tunnel still running - terminating now with SIGKILL\n");
90 $self->log('err', "ssh tunnel child process (PID $cpid) couldn't be collected\n")
91 if !&$collect_child_process();
95 my ($self, $tunnel, $timeout) = @_;
97 $timeout = 60 if !defined($timeout);
99 my $reader = $tunnel->{reader
};
103 PVE
::Tools
::run_with_timeout
($timeout, sub { $output = <$reader>; });
105 die "reading from tunnel failed: $@\n" if $@;
113 my ($self, $tunnel, $timeout, $command) = @_;
115 $timeout = 60 if !defined($timeout);
117 my $writer = $tunnel->{writer
};
120 PVE
::Tools
::run_with_timeout
($timeout, sub {
121 print $writer "$command\n";
125 die "writing to tunnel failed: $@\n" if $@;
129 my ($self, $tunnel_addr) = @_;
131 my @localtunnelinfo = defined($tunnel_addr) ?
('-L' , $tunnel_addr ) : ();
133 my $cmd = [@{$self->{rem_ssh
}}, '-o ExitOnForwardFailure=yes', @localtunnelinfo, '/usr/sbin/qm', 'mtunnel' ];
135 my $tunnel = $self->fork_command_pipe($cmd);
138 my $helo = $self->read_tunnel($tunnel, 60);
139 die "no reply\n" if !$helo;
140 die "no quorum on target node\n" if $helo =~ m/^no quorum$/;
141 die "got strange reply from mtunnel ('$helo')\n"
142 if $helo !~ m/^tunnel online$/;
147 my $ver = $self->read_tunnel($tunnel, 10);
148 if ($ver =~ /^ver (\d+)$/) {
149 $tunnel->{version
} = $1;
150 $self->log('info', "ssh tunnel $ver\n");
152 $err = "received invalid tunnel version string '$ver'\n" if !$err;
157 $self->finish_command_pipe($tunnel);
158 die "can't open migration tunnel - $err";
164 my ($self, $tunnel) = @_;
166 eval { $self->write_tunnel($tunnel, 30, 'quit'); };
169 $self->finish_command_pipe($tunnel, 30);
171 if ($tunnel->{sock_addr
}) {
172 # ssh does not clean up on local host
173 my $cmd = ['rm', '-f', $tunnel->{sock_addr
}]; #
174 PVE
::Tools
::run_command
($cmd);
176 # .. and just to be sure check on remote side
177 unshift @{$cmd}, @{$self->{rem_ssh
}};
178 PVE
::Tools
::run_command
($cmd);
185 my ($self, $vmid, $code, @param) = @_;
187 return PVE
::QemuConfig-
>lock_config($vmid, $code, @param);
191 my ($self, $vmid) = @_;
193 my $online = $self->{opts
}->{online
};
195 $self->{storecfg
} = PVE
::Storage
::config
();
198 my $conf = $self->{vmconf
} = PVE
::QemuConfig-
>load_config($vmid);
200 PVE
::QemuConfig-
>check_lock($conf);
203 if (my $pid = PVE
::QemuServer
::check_running
($vmid)) {
204 die "can't migrate running VM without --online\n" if !$online;
207 $self->{forcemachine
} = PVE
::QemuServer
::qemu_machine_pxe
($vmid, $conf);
211 if (my $loc_res = PVE
::QemuServer
::check_local_resources
($conf, 1)) {
212 if ($self->{running
} || !$self->{opts
}->{force
}) {
213 die "can't migrate VM which uses local devices\n";
215 $self->log('info', "migrating VM which uses local devices");
219 my $vollist = PVE
::QemuServer
::get_vm_volumes
($conf);
221 my $need_activate = [];
222 foreach my $volid (@$vollist) {
223 my ($sid, $volname) = PVE
::Storage
::parse_volume_id
($volid, 1);
225 # check if storage is available on both nodes
226 my $targetsid = $self->{opts
}->{targetstorage
} ?
$self->{opts
}->{targetstorage
} : $sid;
228 my $scfg = PVE
::Storage
::storage_check_node
($self->{storecfg
}, $sid);
229 PVE
::Storage
::storage_check_node
($self->{storecfg
}, $targetsid, $self->{node
});
231 if ($scfg->{shared
}) {
232 # PVE::Storage::activate_storage checks this for non-shared storages
233 my $plugin = PVE
::Storage
::Plugin-
>lookup($scfg->{type
});
234 warn "Used shared storage '$sid' is not online on source node!\n"
235 if !$plugin->check_connection($sid, $scfg);
237 # only activate if not shared
238 push @$need_activate, $volid;
243 PVE
::Storage
::activate_volumes
($self->{storecfg
}, $need_activate);
245 # test ssh connection
246 my $cmd = [ @{$self->{rem_ssh
}}, '/bin/true' ];
247 eval { $self->cmd_quiet($cmd); };
248 die "Can't connect to destination address using public key\n" if $@;
254 my ($self, $vmid) = @_;
256 my $conf = $self->{vmconf
};
258 # local volumes which have been copied
259 $self->{volumes
} = [];
265 # found local volumes and their origin
266 my $local_volumes = {};
267 my $local_volumes_errors = {};
268 my $other_errors = [];
273 my $log_error = sub {
274 my ($msg, $volid) = @_;
276 if (defined($volid)) {
277 $local_volumes_errors->{$volid} = $msg;
279 push @$other_errors, $msg;
284 my @sids = PVE
::Storage
::storage_ids
($self->{storecfg
});
285 foreach my $storeid (@sids) {
286 my $scfg = PVE
::Storage
::storage_config
($self->{storecfg
}, $storeid);
287 next if $scfg->{shared
};
288 next if !PVE
::Storage
::storage_check_enabled
($self->{storecfg
}, $storeid, undef, 1);
290 # get list from PVE::Storage (for unused volumes)
291 my $dl = PVE
::Storage
::vdisk_list
($self->{storecfg
}, $storeid, $vmid);
293 next if @{$dl->{$storeid}} == 0;
295 my $targetsid = $self->{opts
}->{targetstorage
} ?
$self->{opts
}->{targetstorage
} : $storeid;
297 # check if storage is available on target node
298 PVE
::Storage
::storage_check_node
($self->{storecfg
}, $targetsid, $self->{node
});
299 $sharedvm = 0; # there is a non-shared disk
301 PVE
::Storage
::foreach_volid
($dl, sub {
302 my ($volid, $sid, $volname) = @_;
304 $local_volumes->{$volid}->{ref} = 'storage';
308 my $test_volid = sub {
309 my ($volid, $attr) = @_;
311 if ($volid =~ m
|^/|) {
312 $local_volumes->{$volid}->{ref} = 'config';
313 die "local file/device\n";
316 my $snaprefs = $attr->{referenced_in_snapshot
};
318 if ($attr->{cdrom
}) {
319 if ($volid eq 'cdrom') {
320 my $msg = "can't migrate local cdrom drive";
321 if (defined($snaprefs) && !$attr->{referenced_in_config
}) {
322 my $snapnames = join(', ', sort keys %$snaprefs);
323 $msg .= " (referenced in snapshot - $snapnames)";
325 &$log_error("$msg\n");
328 return if $volid eq 'none';
331 my ($sid, $volname) = PVE
::Storage
::parse_volume_id
($volid);
333 my $targetsid = $self->{opts
}->{targetstorage
} ?
$self->{opts
}->{targetstorage
} : $sid;
334 # check if storage is available on both nodes
335 my $scfg = PVE
::Storage
::storage_check_node
($self->{storecfg
}, $sid);
336 PVE
::Storage
::storage_check_node
($self->{storecfg
}, $targetsid, $self->{node
});
338 return if $scfg->{shared
};
342 $local_volumes->{$volid}->{ref} = $attr->{referenced_in_config
} ?
'config' : 'snapshot';
344 die "local cdrom image\n" if $attr->{cdrom
};
346 my ($path, $owner) = PVE
::Storage
::path
($self->{storecfg
}, $volid);
348 die "owned by other VM (owner = VM $owner)\n"
349 if !$owner || ($owner != $self->{vmid
});
351 my $format = PVE
::QemuServer
::qemu_img_format
($scfg, $volname);
352 $local_volumes->{$volid}->{snapshots
} = defined($snaprefs) || ($format =~ /^(?:qcow2|vmdk)$/);
353 if (defined($snaprefs)) {
354 # we cannot migrate shapshots on local storage
355 # exceptions: 'zfspool' or 'qcow2' files (on directory storage)
357 die "online storage migration not possible if snapshot exists\n" if $self->{running
};
358 if (!($scfg->{type
} eq 'zfspool' || $format eq 'qcow2')) {
359 die "non-migratable snapshot exists\n";
363 die "referenced by linked clone(s)\n"
364 if PVE
::Storage
::volume_is_base_and_used
($self->{storecfg
}, $volid);
367 PVE
::QemuServer
::foreach_volid
($conf, sub {
368 my ($volid, $attr) = @_;
369 eval { $test_volid->($volid, $attr); };
371 &$log_error($err, $volid);
375 foreach my $vol (sort keys %$local_volumes) {
376 my $ref = $local_volumes->{$vol}->{ref};
377 if ($ref eq 'storage') {
378 $self->log('info', "found local disk '$vol' (via storage)\n");
379 } elsif ($ref eq 'config') {
380 &$log_error("can't live migrate attached local disks without with-local-disks option\n", $vol)
381 if $self->{running
} && !$self->{opts
}->{"with-local-disks"};
382 $self->log('info', "found local disk '$vol' (in current VM config)\n");
383 } elsif ($ref eq 'snapshot') {
384 $self->log('info', "found local disk '$vol' (referenced by snapshot(s))\n");
386 $self->log('info', "found local disk '$vol'\n");
390 foreach my $vol (sort keys %$local_volumes_errors) {
391 $self->log('warn', "can't migrate local disk '$vol': $local_volumes_errors->{$vol}");
393 foreach my $err (@$other_errors) {
394 $self->log('warn', "$err");
397 if ($self->{running
} && !$sharedvm && !$self->{opts
}->{targetstorage
}) {
398 $self->{opts
}->{targetstorage
} = 1; #use same sid for remote local
402 die "can't migrate VM - check log\n";
405 # additional checks for local storage
406 foreach my $volid (keys %$local_volumes) {
407 my ($sid, $volname) = PVE
::Storage
::parse_volume_id
($volid);
408 my $scfg = PVE
::Storage
::storage_config
($self->{storecfg
}, $sid);
410 my $migratable = ($scfg->{type
} eq 'dir') || ($scfg->{type
} eq 'zfspool') ||
411 ($scfg->{type
} eq 'lvmthin') || ($scfg->{type
} eq 'lvm');
413 die "can't migrate '$volid' - storage type '$scfg->{type}' not supported\n"
416 # image is a linked clone on local storage, se we can't migrate.
417 if (my $basename = (PVE
::Storage
::parse_volname
($self->{storecfg
}, $volid))[3]) {
418 die "can't migrate '$volid' as it's a clone of '$basename'";
424 $self->log('info', "copying disk images");
426 my $rep_cfg = PVE
::ReplicationConfig-
>new();
428 if (my $jobcfg = $rep_cfg->find_local_replication_job($vmid, $self->{node
})) {
429 die "can't live migrate VM with replicated volumes\n" if $self->{running
};
430 my $start_time = time();
431 my $logfunc = sub { my ($msg) = @_; $self->log('info', $msg); };
432 $rep_volumes = PVE
::Replication
::run_replication
(
433 'PVE::QemuConfig', $jobcfg, $start_time, $start_time, $logfunc);
436 foreach my $volid (keys %$local_volumes) {
437 my ($sid, $volname) = PVE
::Storage
::parse_volume_id
($volid);
438 if ($self->{running
} && $self->{opts
}->{targetstorage
} && $local_volumes->{$volid}->{ref} eq 'config') {
439 push @{$self->{online_local_volumes
}}, $volid;
441 next if $rep_volumes->{$volid};
442 push @{$self->{volumes
}}, $volid;
443 my $insecure = $self->{opts
}->{migration_type
} eq 'insecure';
444 my $with_snapshots = $local_volumes->{$volid}->{snapshots
};
445 PVE
::Storage
::storage_migrate
($self->{storecfg
}, $volid, $self->{ssh_info
}, $sid,
446 undef, undef, undef, undef, $insecure, $with_snapshots);
450 die "Failed to sync data - $@" if $@;
453 sub cleanup_remotedisks
{
456 foreach my $target_drive (keys %{$self->{target_drive
}}) {
458 my $drive = PVE
::QemuServer
::parse_drive
($target_drive, $self->{target_drive
}->{$target_drive}->{volid
});
459 my ($storeid, $volname) = PVE
::Storage
::parse_volume_id
($drive->{file
});
461 my $cmd = [@{$self->{rem_ssh
}}, 'pvesm', 'free', "$storeid:$volname"];
463 eval{ PVE
::Tools
::run_command
($cmd, outfunc
=> sub {}, errfunc
=> sub {}) };
465 $self->log('err', $err);
472 my ($self, $vmid) = @_;
474 $self->log('info', "starting migration of VM $vmid to node '$self->{node}' ($self->{nodeip})");
476 my $conf = $self->{vmconf
};
478 # set migrate lock in config file
479 $conf->{lock} = 'migrate';
480 PVE
::QemuConfig-
>write_config($vmid, $conf);
482 sync_disks
($self, $vmid);
487 my ($self, $vmid, $err) = @_;
489 $self->log('info', "aborting phase 1 - cleanup resources");
491 my $conf = $self->{vmconf
};
492 delete $conf->{lock};
493 eval { PVE
::QemuConfig-
>write_config($vmid, $conf) };
495 $self->log('err', $err);
498 if ($self->{volumes
}) {
499 foreach my $volid (@{$self->{volumes
}}) {
500 $self->log('err', "found stale volume copy '$volid' on node '$self->{node}'");
501 # fixme: try to remove ?
507 my ($self, $vmid) = @_;
509 my $conf = $self->{vmconf
};
511 $self->log('info', "starting VM $vmid on remote node '$self->{node}'");
515 my $ruri; # the whole migration dst. URI (protocol:address[:port])
516 my $nodename = PVE
::INotify
::nodename
();
518 ## start on remote node
519 my $cmd = [@{$self->{rem_ssh
}}];
522 if (PVE
::QemuServer
::vga_conf_has_spice
($conf->{vga
})) {
523 my $res = PVE
::QemuServer
::vm_mon_cmd
($vmid, 'query-spice');
524 $spice_ticket = $res->{ticket
};
527 push @$cmd , 'qm', 'start', $vmid, '--skiplock', '--migratedfrom', $nodename;
529 my $migration_type = $self->{opts
}->{migration_type
};
531 push @$cmd, '--migration_type', $migration_type;
533 push @$cmd, '--migration_network', $self->{opts
}->{migration_network
}
534 if $self->{opts
}->{migration_network
};
536 if ($migration_type eq 'insecure') {
537 push @$cmd, '--stateuri', 'tcp';
539 push @$cmd, '--stateuri', 'unix';
542 if ($self->{forcemachine
}) {
543 push @$cmd, '--machine', $self->{forcemachine
};
546 if ($self->{opts
}->{targetstorage
}) {
547 push @$cmd, '--targetstorage', $self->{opts
}->{targetstorage
};
552 # Note: We try to keep $spice_ticket secret (do not pass via command line parameter)
553 # instead we pipe it through STDIN
554 PVE
::Tools
::run_command
($cmd, input
=> $spice_ticket, outfunc
=> sub {
557 if ($line =~ m/^migration listens on tcp:(localhost|[\d\.]+|\[[\d\.:a-fA-F]+\]):(\d+)$/) {
560 $ruri = "tcp:$raddr:$rport";
562 elsif ($line =~ m!^migration listens on unix:(/run/qemu-server/(\d+)\.migrate)$!) {
564 die "Destination UNIX sockets VMID does not match source VMID" if $vmid ne $2;
565 $ruri = "unix:$raddr";
567 elsif ($line =~ m/^migration listens on port (\d+)$/) {
568 $raddr = "localhost";
570 $ruri = "tcp:$raddr:$rport";
572 elsif ($line =~ m/^spice listens on port (\d+)$/) {
573 $spice_port = int($1);
575 elsif ($line =~ m/^storage migration listens on nbd:(localhost|[\d\.]+|\[[\d\.:a-fA-F]+\]):(\d+):exportname=(\S+) volume:(\S+)$/) {
577 my $nbd_uri = "nbd:$1:$2:exportname=$3";
578 my $targetdrive = $3;
579 $targetdrive =~ s/drive-//g;
581 $self->{target_drive
}->{$targetdrive}->{volid
} = $volid;
582 $self->{target_drive
}->{$targetdrive}->{nbd_uri
} = $nbd_uri;
587 $self->log('info', $line);
590 die "unable to detect remote migration address\n" if !$raddr;
592 if ($migration_type eq 'secure') {
593 $self->log('info', "start remote tunnel");
595 if ($ruri =~ /^unix:/) {
597 $self->{tunnel
} = $self->fork_tunnel("$raddr:$raddr");
598 $self->{tunnel
}->{sock_addr
} = $raddr;
600 my $unix_socket_try = 0; # wait for the socket to become ready
601 while (! -S
$raddr) {
603 if ($unix_socket_try > 100) {
605 $self->finish_tunnel($self->{tunnel
});
606 die "Timeout, migration socket $ruri did not get ready";
612 } elsif ($ruri =~ /^tcp:/) {
614 if ($raddr eq "localhost") {
615 # for backwards compatibility with older qemu-server versions
616 my $pfamily = PVE
::Tools
::get_host_address_family
($nodename);
617 my $lport = PVE
::Tools
::next_migrate_port
($pfamily);
618 $tunnel_addr = "$lport:localhost:$rport";
621 $self->{tunnel
} = $self->fork_tunnel($tunnel_addr);
624 die "unsupported protocol in migration URI: $ruri\n";
630 if ($self->{opts
}->{targetstorage
} && defined($self->{online_local_volumes
})) {
631 $self->{storage_migration
} = 1;
632 $self->{storage_migration_jobs
} = {};
633 $self->log('info', "starting storage migration");
635 die "The number of local disks does not match between the source and the destination.\n"
636 if (scalar(keys %{$self->{target_drive
}}) != scalar @{$self->{online_local_volumes
}});
637 foreach my $drive (keys %{$self->{target_drive
}}){
638 my $nbd_uri = $self->{target_drive
}->{$drive}->{nbd_uri
};
639 $self->log('info', "$drive: start migration to to $nbd_uri");
640 PVE
::QemuServer
::qemu_drive_mirror
($vmid, $drive, $nbd_uri, $vmid, undef, $self->{storage_migration_jobs
}, 1);
644 $self->log('info', "starting online/live migration on $ruri");
645 $self->{livemigration
} = 1;
648 my $defaults = PVE
::QemuServer
::load_defaults
();
650 # always set migrate speed (overwrite kvm default of 32m)
651 # we set a very hight default of 8192m which is basically unlimited
652 my $migrate_speed = $defaults->{migrate_speed
} || 8192;
653 $migrate_speed = $conf->{migrate_speed
} || $migrate_speed;
654 $migrate_speed = $migrate_speed * 1048576;
655 $self->log('info', "migrate_set_speed: $migrate_speed");
657 PVE
::QemuServer
::vm_mon_cmd_nocheck
($vmid, "migrate_set_speed", value
=> int($migrate_speed));
659 $self->log('info', "migrate_set_speed error: $@") if $@;
661 my $migrate_downtime = $defaults->{migrate_downtime
};
662 $migrate_downtime = $conf->{migrate_downtime
} if defined($conf->{migrate_downtime
});
663 if (defined($migrate_downtime)) {
664 $self->log('info', "migrate_set_downtime: $migrate_downtime");
666 PVE
::QemuServer
::vm_mon_cmd_nocheck
($vmid, "migrate_set_downtime", value
=> int($migrate_downtime*100)/100);
668 $self->log('info', "migrate_set_downtime error: $@") if $@;
671 $self->log('info', "set migration_caps");
673 PVE
::QemuServer
::set_migration_caps
($vmid);
677 # set cachesize to 10% of the total memory
678 my $memory = $conf->{memory
} || $defaults->{memory
};
679 my $cachesize = int($memory * 1048576 / 10);
680 $self->log('info', "set cachesize: $cachesize");
682 PVE
::QemuServer
::vm_mon_cmd_nocheck
($vmid, "migrate-set-cache-size", value
=> int($cachesize));
684 $self->log('info', "migrate-set-cache-size error: $@") if $@;
686 if (PVE
::QemuServer
::vga_conf_has_spice
($conf->{vga
})) {
687 my $rpcenv = PVE
::RPCEnvironment
::get
();
688 my $authuser = $rpcenv->get_user();
690 my (undef, $proxyticket) = PVE
::AccessControl
::assemble_spice_ticket
($authuser, $vmid, $self->{node
});
692 my $filename = "/etc/pve/nodes/$self->{node}/pve-ssl.pem";
693 my $subject = PVE
::AccessControl
::read_x509_subject_spice
($filename);
695 $self->log('info', "spice client_migrate_info");
698 PVE
::QemuServer
::vm_mon_cmd_nocheck
($vmid, "client_migrate_info", protocol
=> 'spice',
699 hostname
=> $proxyticket, 'tls-port' => $spice_port,
700 'cert-subject' => $subject);
702 $self->log('info', "client_migrate_info error: $@") if $@;
706 $self->log('info', "start migrate command to $ruri");
708 PVE
::QemuServer
::vm_mon_cmd_nocheck
($vmid, "migrate", uri
=> $ruri);
711 $self->log('info', "migrate uri => $ruri failed: $merr") if $merr;
714 my $usleep = 2000000;
718 my $downtimecounter = 0;
721 my $avglstat = $lstat/$i if $lstat;
726 $stat = PVE
::QemuServer
::vm_mon_cmd_nocheck
($vmid, "query-migrate");
730 warn "query migrate failed: $err\n";
731 $self->log('info', "query migrate failed: $err");
732 if ($err_count <= 5) {
736 die "too many query migrate failures - aborting\n";
739 if (defined($stat->{status
}) && $stat->{status
} =~ m/^(setup)$/im) {
744 if (defined($stat->{status
}) && $stat->{status
} =~ m/^(active|completed|failed|cancelled)$/im) {
747 if ($stat->{status
} eq 'completed') {
748 my $delay = time() - $start;
750 my $mbps = sprintf "%.2f", $memory / $delay;
751 my $downtime = $stat->{downtime
} || 0;
752 $self->log('info', "migration speed: $mbps MB/s - downtime $downtime ms");
756 if ($stat->{status
} eq 'failed' || $stat->{status
} eq 'cancelled') {
757 $self->log('info', "migration status error: $stat->{status}");
761 if ($stat->{status
} ne 'active') {
762 $self->log('info', "migration status: $stat->{status}");
766 if ($stat->{ram
}->{transferred
} ne $lstat) {
767 my $trans = $stat->{ram
}->{transferred
} || 0;
768 my $rem = $stat->{ram
}->{remaining
} || 0;
769 my $total = $stat->{ram
}->{total
} || 0;
770 my $xbzrlecachesize = $stat->{"xbzrle-cache"}->{"cache-size"} || 0;
771 my $xbzrlebytes = $stat->{"xbzrle-cache"}->{"bytes"} || 0;
772 my $xbzrlepages = $stat->{"xbzrle-cache"}->{"pages"} || 0;
773 my $xbzrlecachemiss = $stat->{"xbzrle-cache"}->{"cache-miss"} || 0;
774 my $xbzrleoverflow = $stat->{"xbzrle-cache"}->{"overflow"} || 0;
775 #reduce sleep if remainig memory if lower than the everage transfert
776 $usleep = 300000 if $avglstat && $rem < $avglstat;
778 $self->log('info', "migration status: $stat->{status} (transferred ${trans}, " .
779 "remaining ${rem}), total ${total})");
781 if (${xbzrlecachesize
}) {
782 $self->log('info', "migration xbzrle cachesize: ${xbzrlecachesize} transferred ${xbzrlebytes} pages ${xbzrlepages} cachemiss ${xbzrlecachemiss} overflow ${xbzrleoverflow}");
785 if (($lastrem && $rem > $lastrem ) || ($rem == 0)) {
790 if ($downtimecounter > 5) {
791 $downtimecounter = 0;
792 $migrate_downtime *= 2;
793 $self->log('info', "migrate_set_downtime: $migrate_downtime");
795 PVE
::QemuServer
::vm_mon_cmd_nocheck
($vmid, "migrate_set_downtime", value
=> int($migrate_downtime*100)/100);
797 $self->log('info', "migrate_set_downtime error: $@") if $@;
803 $lstat = $stat->{ram
}->{transferred
};
807 die "unable to parse migration status '$stat->{status}' - aborting\n";
811 # just to be sure that the tunnel gets closed on successful migration, on error
812 # phase2_cleanup closes it *after* stopping the remote waiting VM
813 if (!$self->{errors
} && $self->{tunnel
}) {
814 eval { finish_tunnel
($self, $self->{tunnel
}); };
816 $self->log('err', $err);
823 my ($self, $vmid, $err) = @_;
825 return if !$self->{errors
};
826 $self->{phase2errors
} = 1;
828 $self->log('info', "aborting phase 2 - cleanup resources");
830 $self->log('info', "migrate_cancel");
832 PVE
::QemuServer
::vm_mon_cmd_nocheck
($vmid, "migrate_cancel");
834 $self->log('info', "migrate_cancel error: $@") if $@;
836 my $conf = $self->{vmconf
};
837 delete $conf->{lock};
838 eval { PVE
::QemuConfig-
>write_config($vmid, $conf) };
840 $self->log('err', $err);
843 # cleanup ressources on target host
844 if ($self->{storage_migration
}) {
846 eval { PVE
::QemuServer
::qemu_blockjobs_cancel
($vmid, $self->{storage_migration_jobs
}) };
848 $self->log('err', $err);
851 eval { PVE
::QemuMigrate
::cleanup_remotedisks
($self) };
853 $self->log('err', $err);
857 my $nodename = PVE
::INotify
::nodename
();
859 my $cmd = [@{$self->{rem_ssh
}}, 'qm', 'stop', $vmid, '--skiplock', '--migratedfrom', $nodename];
860 eval{ PVE
::Tools
::run_command
($cmd, outfunc
=> sub {}, errfunc
=> sub {}) };
862 $self->log('err', $err);
866 if ($self->{tunnel
}) {
867 eval { finish_tunnel
($self, $self->{tunnel
}); };
869 $self->log('err', $err);
876 my ($self, $vmid) = @_;
878 my $volids = $self->{volumes
};
879 return if $self->{phase2errors
};
881 # destroy local copies
882 foreach my $volid (@$volids) {
883 eval { PVE
::Storage
::vdisk_free
($self->{storecfg
}, $volid); };
885 $self->log('err', "removing local copy of '$volid' failed - $err");
887 last if $err =~ /^interrupted by signal$/;
893 my ($self, $vmid, $err) = @_;
895 my $conf = $self->{vmconf
};
896 return if $self->{phase2errors
};
898 if ($self->{storage_migration
}) {
900 eval { PVE
::QemuServer
::qemu_drive_mirror_monitor
($vmid, undef, $self->{storage_migration_jobs
}); };
903 eval { PVE
::QemuServer
::qemu_blockjobs_cancel
($vmid, $self->{storage_migration_jobs
}) };
904 eval { PVE
::QemuMigrate
::cleanup_remotedisks
($self) };
905 die "Failed to completed storage migration\n";
907 foreach my $target_drive (keys %{$self->{target_drive
}}) {
908 my $drive = PVE
::QemuServer
::parse_drive
($target_drive, $self->{target_drive
}->{$target_drive}->{volid
});
909 $conf->{$target_drive} = PVE
::QemuServer
::print_drive
($vmid, $drive);
910 PVE
::QemuConfig-
>write_config($vmid, $conf);
915 # transfer replication state before move config
916 $self->transfer_replication_state();
918 # move config to remote node
919 my $conffile = PVE
::QemuConfig-
>config_file($vmid);
920 my $newconffile = PVE
::QemuConfig-
>config_file($vmid, $self->{node
});
922 die "Failed to move config to node '$self->{node}' - rename failed: $!\n"
923 if !rename($conffile, $newconffile);
925 $self->switch_replication_job_target();
927 if ($self->{livemigration
}) {
928 if ($self->{storage_migration
}) {
929 # remove drives referencing the nbd server from source
930 # otherwise vm_stop might hang later on
931 foreach my $drive (keys %{$self->{target_drive
}}){
932 PVE
::QemuServer
::vm_mon_cmd_nocheck
($vmid, "device_del", id
=> $drive);
934 # stop nbd server on remote vm - requirement for resume since 2.9
935 my $cmd = [@{$self->{rem_ssh
}}, 'qm', 'nbdstop', $vmid];
937 eval{ PVE
::Tools
::run_command
($cmd, outfunc
=> sub {}, errfunc
=> sub {}) };
939 $self->log('err', $err);
943 # config moved and nbd server stopped - now we can resume vm on target
944 my $cmd = [@{$self->{rem_ssh
}}, 'qm', 'resume', $vmid, '--skiplock', '--nocheck'];
945 eval{ PVE
::Tools
::run_command
($cmd, outfunc
=> sub {},
948 $self->log('err', $line);
952 $self->log('err', $err);
959 if (PVE
::QemuServer
::vga_conf_has_spice
($conf->{vga
}) && $self->{running
}) {
960 $self->log('info', "Waiting for spice server migration");
962 my $res = PVE
::QemuServer
::vm_mon_cmd_nocheck
($vmid, 'query-spice');
963 last if int($res->{'migrated'}) == 1;
971 # always stop local VM
972 eval { PVE
::QemuServer
::vm_stop
($self->{storecfg
}, $vmid, 1, 1); };
974 $self->log('err', "stopping vm failed - $err");
978 # always deactivate volumes - avoid lvm LVs to be active on several nodes
980 my $vollist = PVE
::QemuServer
::get_vm_volumes
($conf);
981 PVE
::Storage
::deactivate_volumes
($self->{storecfg
}, $vollist);
984 $self->log('err', $err);
988 if($self->{storage_migration
}) {
989 # destroy local copies
990 my $volids = $self->{online_local_volumes
};
992 foreach my $volid (@$volids) {
993 eval { PVE
::Storage
::vdisk_free
($self->{storecfg
}, $volid); };
995 $self->log('err', "removing local copy of '$volid' failed - $err");
997 last if $err =~ /^interrupted by signal$/;
1003 # clear migrate lock
1004 my $cmd = [ @{$self->{rem_ssh
}}, 'qm', 'unlock', $vmid ];
1005 $self->cmd_logerr($cmd, errmsg
=> "failed to clear migrate lock");
1009 my ($self, $vmid) = @_;