mirror of
https://git.proxmox.com/git/qemu-server
synced 2025-05-02 15:25:36 +00:00
46883f80f6
This reverts commit 63d02c7074.
The commit changes the configuration before the VM is actually
migrated, so it is possible to have a wrong configuration when
migration fails for some reason. Also, I am quite unsure if
this automatic target change is really wanted. The patch also
contains wrong refereces to $self->{opts}->{node}.
976 lines
28 KiB
Perl
976 lines
28 KiB
Perl
package PVE::QemuMigrate;
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use strict;
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use warnings;
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use PVE::AbstractMigrate;
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use IO::File;
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use IPC::Open2;
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use POSIX qw( WNOHANG );
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use PVE::INotify;
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use PVE::Tools;
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use PVE::Cluster;
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use PVE::Storage;
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use PVE::QemuServer;
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use Time::HiRes qw( usleep );
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use PVE::RPCEnvironment;
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use base qw(PVE::AbstractMigrate);
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sub fork_command_pipe {
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my ($self, $cmd) = @_;
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my $reader = IO::File->new();
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my $writer = IO::File->new();
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my $orig_pid = $$;
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my $cpid;
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eval { $cpid = open2($reader, $writer, @$cmd); };
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my $err = $@;
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# catch exec errors
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if ($orig_pid != $$) {
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$self->log('err', "can't fork command pipe\n");
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POSIX::_exit(1);
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kill('KILL', $$);
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}
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die $err if $err;
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return { writer => $writer, reader => $reader, pid => $cpid };
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}
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sub finish_command_pipe {
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my ($self, $cmdpipe, $timeout) = @_;
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my $cpid = $cmdpipe->{pid};
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return if !defined($cpid);
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my $writer = $cmdpipe->{writer};
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my $reader = $cmdpipe->{reader};
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$writer->close();
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$reader->close();
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my $collect_child_process = sub {
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my $res = waitpid($cpid, WNOHANG);
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if (defined($res) && ($res == $cpid)) {
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delete $cmdpipe->{cpid};
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return 1;
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} else {
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return 0;
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}
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};
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if ($timeout) {
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for (my $i = 0; $i < $timeout; $i++) {
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return if &$collect_child_process();
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sleep(1);
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}
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}
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$self->log('info', "ssh tunnel still running - terminating now with SIGTERM\n");
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kill(15, $cpid);
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# wait again
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for (my $i = 0; $i < 10; $i++) {
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return if &$collect_child_process();
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sleep(1);
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}
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$self->log('info', "ssh tunnel still running - terminating now with SIGKILL\n");
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kill 9, $cpid;
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sleep 1;
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$self->log('err', "ssh tunnel child process (PID $cpid) couldn't be collected\n")
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if !&$collect_child_process();
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}
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sub fork_tunnel {
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my ($self, $tunnel_addr) = @_;
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my @localtunnelinfo = defined($tunnel_addr) ? ('-L' , $tunnel_addr ) : ();
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my $cmd = [@{$self->{rem_ssh}}, '-o ExitOnForwardFailure=yes', @localtunnelinfo, 'qm', 'mtunnel' ];
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my $tunnel = $self->fork_command_pipe($cmd);
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my $reader = $tunnel->{reader};
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my $helo;
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eval {
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PVE::Tools::run_with_timeout(60, sub { $helo = <$reader>; });
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die "no reply\n" if !$helo;
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die "no quorum on target node\n" if $helo =~ m/^no quorum$/;
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die "got strange reply from mtunnel ('$helo')\n"
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if $helo !~ m/^tunnel online$/;
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};
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my $err = $@;
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if ($err) {
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$self->finish_command_pipe($tunnel);
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die "can't open migration tunnel - $err";
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}
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return $tunnel;
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}
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sub finish_tunnel {
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my ($self, $tunnel) = @_;
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my $writer = $tunnel->{writer};
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eval {
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PVE::Tools::run_with_timeout(30, sub {
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print $writer "quit\n";
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$writer->flush();
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});
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};
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my $err = $@;
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$self->finish_command_pipe($tunnel, 30);
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if ($tunnel->{sock_addr}) {
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# ssh does not clean up on local host
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my $cmd = ['rm', '-f', $tunnel->{sock_addr}]; #
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PVE::Tools::run_command($cmd);
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# .. and just to be sure check on remote side
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unshift @{$cmd}, @{$self->{rem_ssh}};
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PVE::Tools::run_command($cmd);
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}
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die $err if $err;
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}
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sub lock_vm {
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my ($self, $vmid, $code, @param) = @_;
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return PVE::QemuConfig->lock_config($vmid, $code, @param);
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}
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sub prepare {
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my ($self, $vmid) = @_;
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my $online = $self->{opts}->{online};
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$self->{storecfg} = PVE::Storage::config();
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# test if VM exists
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my $conf = $self->{vmconf} = PVE::QemuConfig->load_config($vmid);
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PVE::QemuConfig->check_lock($conf);
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my $running = 0;
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if (my $pid = PVE::QemuServer::check_running($vmid)) {
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die "can't migrate running VM without --online\n" if !$online;
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$running = $pid;
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$self->{forcemachine} = PVE::QemuServer::qemu_machine_pxe($vmid, $conf);
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}
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if (my $loc_res = PVE::QemuServer::check_local_resources($conf, 1)) {
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if ($self->{running} || !$self->{opts}->{force}) {
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die "can't migrate VM which uses local devices\n";
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} else {
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$self->log('info', "migrating VM which uses local devices");
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}
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}
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my $vollist = PVE::QemuServer::get_vm_volumes($conf);
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my $need_activate = [];
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foreach my $volid (@$vollist) {
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my ($sid, $volname) = PVE::Storage::parse_volume_id($volid, 1);
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# check if storage is available on both nodes
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my $targetsid = $self->{opts}->{targetstorage} ? $self->{opts}->{targetstorage} : $sid;
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my $scfg = PVE::Storage::storage_check_node($self->{storecfg}, $sid);
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PVE::Storage::storage_check_node($self->{storecfg}, $targetsid, $self->{node});
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if ($scfg->{shared}) {
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# PVE::Storage::activate_storage checks this for non-shared storages
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my $plugin = PVE::Storage::Plugin->lookup($scfg->{type});
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warn "Used shared storage '$sid' is not online on source node!\n"
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if !$plugin->check_connection($sid, $scfg);
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} else {
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# only activate if not shared
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push @$need_activate, $volid;
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}
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}
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# activate volumes
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PVE::Storage::activate_volumes($self->{storecfg}, $need_activate);
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# test ssh connection
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my $cmd = [ @{$self->{rem_ssh}}, '/bin/true' ];
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eval { $self->cmd_quiet($cmd); };
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die "Can't connect to destination address using public key\n" if $@;
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return $running;
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}
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sub sync_disks {
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my ($self, $vmid) = @_;
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my $conf = $self->{vmconf};
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# local volumes which have been copied
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$self->{volumes} = [];
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my $res = [];
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eval {
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# found local volumes and their origin
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my $local_volumes = {};
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my $local_volumes_errors = {};
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my $other_errors = [];
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my $abort = 0;
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my $sharedvm = 1;
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my $log_error = sub {
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my ($msg, $volid) = @_;
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if (defined($volid)) {
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$local_volumes_errors->{$volid} = $msg;
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} else {
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push @$other_errors, $msg;
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}
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$abort = 1;
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};
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my @sids = PVE::Storage::storage_ids($self->{storecfg});
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foreach my $storeid (@sids) {
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my $scfg = PVE::Storage::storage_config($self->{storecfg}, $storeid);
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next if $scfg->{shared};
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next if !PVE::Storage::storage_check_enabled($self->{storecfg}, $storeid, undef, 1);
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# get list from PVE::Storage (for unused volumes)
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my $dl = PVE::Storage::vdisk_list($self->{storecfg}, $storeid, $vmid);
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next if @{$dl->{$storeid}} == 0;
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my $targetsid = $self->{opts}->{targetstorage} ? $self->{opts}->{targetstorage} : $storeid;
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# check if storage is available on target node
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PVE::Storage::storage_check_node($self->{storecfg}, $targetsid, $self->{node});
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$sharedvm = 0; # there is a non-shared disk
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PVE::Storage::foreach_volid($dl, sub {
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my ($volid, $sid, $volname) = @_;
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$local_volumes->{$volid} = 'storage';
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});
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}
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my $test_volid = sub {
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my ($volid, $is_cdrom, $snapname) = @_;
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return if !$volid;
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if ($volid =~ m|^/|) {
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$local_volumes->{$volid} = 'config';
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die "local file/device\n";
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}
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if ($is_cdrom) {
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if ($volid eq 'cdrom') {
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my $msg = "can't migrate local cdrom drive";
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$msg .= " (referenced in snapshot '$snapname')"
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if defined($snapname);
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&$log_error("$msg\n");
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return;
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}
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return if $volid eq 'none';
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}
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my ($sid, $volname) = PVE::Storage::parse_volume_id($volid);
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my $targetsid = $self->{opts}->{targetstorage} ? $self->{opts}->{targetstorage} : $sid;
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# check if storage is available on both nodes
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my $scfg = PVE::Storage::storage_check_node($self->{storecfg}, $sid);
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PVE::Storage::storage_check_node($self->{storecfg}, $targetsid, $self->{node});
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return if $scfg->{shared};
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$sharedvm = 0;
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$local_volumes->{$volid} = defined($snapname) ? 'snapshot' : 'config';
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die "local cdrom image\n" if $is_cdrom;
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my ($path, $owner) = PVE::Storage::path($self->{storecfg}, $volid);
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die "owned by other VM (owner = VM $owner)\n"
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if !$owner || ($owner != $self->{vmid});
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if (defined($snapname)) {
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# we cannot migrate shapshots on local storage
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# exceptions: 'zfspool' or 'qcow2' files (on directory storage)
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my $format = PVE::QemuServer::qemu_img_format($scfg, $volname);
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die "online storage migration not possible if snapshot exists\n" if $self->{running};
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if (!($scfg->{type} eq 'zfspool' || $format eq 'qcow2')) {
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die "non-migratable snapshot exists\n";
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}
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}
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die "referenced by linked clone(s)\n"
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if PVE::Storage::volume_is_base_and_used($self->{storecfg}, $volid);
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};
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my $test_drive = sub {
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my ($ds, $drive, $snapname) = @_;
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eval {
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&$test_volid($drive->{file}, PVE::QemuServer::drive_is_cdrom($drive), $snapname);
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};
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&$log_error($@, $drive->{file}) if $@;
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};
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foreach my $snapname (keys %{$conf->{snapshots}}) {
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eval {
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&$test_volid($conf->{snapshots}->{$snapname}->{'vmstate'}, 0, undef)
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if defined($conf->{snapshots}->{$snapname}->{'vmstate'});
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};
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&$log_error($@, $conf->{snapshots}->{$snapname}->{'vmstate'}) if $@;
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PVE::QemuServer::foreach_drive($conf->{snapshots}->{$snapname}, $test_drive, $snapname);
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}
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PVE::QemuServer::foreach_drive($conf, $test_drive);
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foreach my $vol (sort keys %$local_volumes) {
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if ($local_volumes->{$vol} eq 'storage') {
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$self->log('info', "found local disk '$vol' (via storage)\n");
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} elsif ($local_volumes->{$vol} eq 'config') {
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die "can't live migrate attached local disks without with-local-disks option\n" if $self->{running} && !$self->{opts}->{"with-local-disks"};
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$self->log('info', "found local disk '$vol' (in current VM config)\n");
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} elsif ($local_volumes->{$vol} eq 'snapshot') {
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$self->log('info', "found local disk '$vol' (referenced by snapshot(s))\n");
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} else {
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$self->log('info', "found local disk '$vol'\n");
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}
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}
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foreach my $vol (sort keys %$local_volumes_errors) {
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$self->log('warn', "can't migrate local disk '$vol': $local_volumes_errors->{$vol}");
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}
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foreach my $err (@$other_errors) {
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$self->log('warn', "$err");
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}
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if ($self->{running} && !$sharedvm && !$self->{opts}->{targetstorage}) {
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$self->{opts}->{targetstorage} = 1; #use same sid for remote local
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}
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if ($abort) {
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die "can't migrate VM - check log\n";
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}
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# additional checks for local storage
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foreach my $volid (keys %$local_volumes) {
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my ($sid, $volname) = PVE::Storage::parse_volume_id($volid);
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my $scfg = PVE::Storage::storage_config($self->{storecfg}, $sid);
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my $migratable = ($scfg->{type} eq 'dir') || ($scfg->{type} eq 'zfspool') ||
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($scfg->{type} eq 'lvmthin') || ($scfg->{type} eq 'lvm');
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die "can't migrate '$volid' - storage type '$scfg->{type}' not supported\n"
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if !$migratable;
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# image is a linked clone on local storage, se we can't migrate.
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if (my $basename = (PVE::Storage::parse_volname($self->{storecfg}, $volid))[3]) {
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die "can't migrate '$volid' as it's a clone of '$basename'";
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}
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}
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$self->log('info', "copying disk images");
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foreach my $volid (keys %$local_volumes) {
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my ($sid, $volname) = PVE::Storage::parse_volume_id($volid);
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if ($self->{running} && $self->{opts}->{targetstorage} && $local_volumes->{$volid} eq 'config') {
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push @{$self->{online_local_volumes}}, $volid;
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} else {
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push @{$self->{volumes}}, $volid;
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PVE::Storage::storage_migrate($self->{storecfg}, $volid, $self->{nodeip}, $sid);
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}
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}
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};
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die "Failed to sync data - $@" if $@;
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}
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sub cleanup_remotedisks {
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my ($self) = @_;
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foreach my $target_drive (keys %{$self->{target_drive}}) {
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my $drive = PVE::QemuServer::parse_drive($target_drive, $self->{target_drive}->{$target_drive}->{volid});
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my ($storeid, $volname) = PVE::Storage::parse_volume_id($drive->{file});
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my $cmd = [@{$self->{rem_ssh}}, 'pvesm', 'free', "$storeid:$volname"];
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eval{ PVE::Tools::run_command($cmd, outfunc => sub {}, errfunc => sub {}) };
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if (my $err = $@) {
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$self->log('err', $err);
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$self->{errors} = 1;
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}
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}
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}
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sub phase1 {
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my ($self, $vmid) = @_;
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$self->log('info', "starting migration of VM $vmid to node '$self->{node}' ($self->{nodeip})");
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my $conf = $self->{vmconf};
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# set migrate lock in config file
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$conf->{lock} = 'migrate';
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PVE::QemuConfig->write_config($vmid, $conf);
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sync_disks($self, $vmid);
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};
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sub phase1_cleanup {
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my ($self, $vmid, $err) = @_;
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$self->log('info', "aborting phase 1 - cleanup resources");
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my $conf = $self->{vmconf};
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delete $conf->{lock};
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eval { PVE::QemuConfig->write_config($vmid, $conf) };
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if (my $err = $@) {
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$self->log('err', $err);
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}
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if ($self->{volumes}) {
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foreach my $volid (@{$self->{volumes}}) {
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$self->log('err', "found stale volume copy '$volid' on node '$self->{node}'");
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# fixme: try to remove ?
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}
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}
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}
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sub phase2 {
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my ($self, $vmid) = @_;
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my $conf = $self->{vmconf};
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$self->log('info', "starting VM $vmid on remote node '$self->{node}'");
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my $raddr;
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my $rport;
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my $ruri; # the whole migration dst. URI (protocol:address[:port])
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my $nodename = PVE::INotify::nodename();
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## start on remote node
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my $cmd = [@{$self->{rem_ssh}}];
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my $spice_ticket;
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if (PVE::QemuServer::vga_conf_has_spice($conf->{vga})) {
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my $res = PVE::QemuServer::vm_mon_cmd($vmid, 'query-spice');
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$spice_ticket = $res->{ticket};
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}
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push @$cmd , 'qm', 'start', $vmid, '--skiplock', '--migratedfrom', $nodename;
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# we use TCP only for unsecure migrations as TCP ssh forward tunnels often
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# did appeared to late (they are hard, if not impossible, to check for)
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# secure migration use UNIX sockets now, this *breaks* compatibilty when trying
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# to migrate from new to old but *not* from old to new.
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my $datacenterconf = PVE::Cluster::cfs_read_file('datacenter.cfg');
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my $migration_type = 'secure';
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if (defined($self->{opts}->{migration_type})) {
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$migration_type = $self->{opts}->{migration_type};
|
|
} elsif (defined($datacenterconf->{migration}->{type})) {
|
|
$migration_type = $datacenterconf->{migration}->{type};
|
|
}
|
|
|
|
push @$cmd, '--migration_type', $migration_type;
|
|
|
|
push @$cmd, '--migration_network', $self->{opts}->{migration_network}
|
|
if $self->{opts}->{migration_network};
|
|
|
|
if ($migration_type eq 'insecure') {
|
|
push @$cmd, '--stateuri', 'tcp';
|
|
} else {
|
|
push @$cmd, '--stateuri', 'unix';
|
|
}
|
|
|
|
if ($self->{forcemachine}) {
|
|
push @$cmd, '--machine', $self->{forcemachine};
|
|
}
|
|
|
|
if ($self->{opts}->{targetstorage}) {
|
|
push @$cmd, '--targetstorage', $self->{opts}->{targetstorage};
|
|
}
|
|
|
|
my $spice_port;
|
|
|
|
# Note: We try to keep $spice_ticket secret (do not pass via command line parameter)
|
|
# instead we pipe it through STDIN
|
|
PVE::Tools::run_command($cmd, input => $spice_ticket, outfunc => sub {
|
|
my $line = shift;
|
|
|
|
if ($line =~ m/^migration listens on tcp:(localhost|[\d\.]+|\[[\d\.:a-fA-F]+\]):(\d+)$/) {
|
|
$raddr = $1;
|
|
$rport = int($2);
|
|
$ruri = "tcp:$raddr:$rport";
|
|
}
|
|
elsif ($line =~ m!^migration listens on unix:(/run/qemu-server/(\d+)\.migrate)$!) {
|
|
$raddr = $1;
|
|
die "Destination UNIX sockets VMID does not match source VMID" if $vmid ne $2;
|
|
$ruri = "unix:$raddr";
|
|
}
|
|
elsif ($line =~ m/^migration listens on port (\d+)$/) {
|
|
$raddr = "localhost";
|
|
$rport = int($1);
|
|
$ruri = "tcp:$raddr:$rport";
|
|
}
|
|
elsif ($line =~ m/^spice listens on port (\d+)$/) {
|
|
$spice_port = int($1);
|
|
}
|
|
elsif ($line =~ m/^storage migration listens on nbd:(localhost|[\d\.]+|\[[\d\.:a-fA-F]+\]):(\d+):exportname=(\S+) volume:(\S+)$/) {
|
|
my $volid = $4;
|
|
my $nbd_uri = "nbd:$1:$2:exportname=$3";
|
|
my $targetdrive = $3;
|
|
$targetdrive =~ s/drive-//g;
|
|
|
|
$self->{target_drive}->{$targetdrive}->{volid} = $volid;
|
|
$self->{target_drive}->{$targetdrive}->{nbd_uri} = $nbd_uri;
|
|
|
|
}
|
|
}, errfunc => sub {
|
|
my $line = shift;
|
|
$self->log('info', $line);
|
|
});
|
|
|
|
die "unable to detect remote migration address\n" if !$raddr;
|
|
|
|
if ($migration_type eq 'secure') {
|
|
$self->log('info', "start remote tunnel");
|
|
|
|
if ($ruri =~ /^unix:/) {
|
|
unlink $raddr;
|
|
$self->{tunnel} = $self->fork_tunnel("$raddr:$raddr");
|
|
$self->{tunnel}->{sock_addr} = $raddr;
|
|
|
|
my $unix_socket_try = 0; # wait for the socket to become ready
|
|
while (! -S $raddr) {
|
|
$unix_socket_try++;
|
|
if ($unix_socket_try > 100) {
|
|
$self->{errors} = 1;
|
|
$self->finish_tunnel($self->{tunnel});
|
|
die "Timeout, migration socket $ruri did not get ready";
|
|
}
|
|
|
|
usleep(50000);
|
|
}
|
|
|
|
} elsif ($ruri =~ /^tcp:/) {
|
|
my $tunnel_addr;
|
|
if ($raddr eq "localhost") {
|
|
# for backwards compatibility with older qemu-server versions
|
|
my $pfamily = PVE::Tools::get_host_address_family($nodename);
|
|
my $lport = PVE::Tools::next_migrate_port($pfamily);
|
|
$tunnel_addr = "$lport:localhost:$rport";
|
|
}
|
|
|
|
$self->{tunnel} = $self->fork_tunnel($tunnel_addr);
|
|
|
|
} else {
|
|
die "unsupported protocol in migration URI: $ruri\n";
|
|
}
|
|
}
|
|
|
|
my $start = time();
|
|
|
|
if ($self->{opts}->{targetstorage} && defined($self->{online_local_volumes})) {
|
|
$self->{storage_migration} = 1;
|
|
$self->{storage_migration_jobs} = {};
|
|
$self->log('info', "starting storage migration");
|
|
|
|
die "The number of local disks does not match between the source and the destination.\n"
|
|
if (scalar(keys %{$self->{target_drive}}) != scalar @{$self->{online_local_volumes}});
|
|
foreach my $drive (keys %{$self->{target_drive}}){
|
|
my $nbd_uri = $self->{target_drive}->{$drive}->{nbd_uri};
|
|
$self->log('info', "$drive: start migration to to $nbd_uri");
|
|
PVE::QemuServer::qemu_drive_mirror($vmid, $drive, $nbd_uri, $vmid, undef, $self->{storage_migration_jobs}, 1);
|
|
}
|
|
}
|
|
|
|
$self->log('info', "starting online/live migration on $ruri");
|
|
$self->{livemigration} = 1;
|
|
|
|
# load_defaults
|
|
my $defaults = PVE::QemuServer::load_defaults();
|
|
|
|
# always set migrate speed (overwrite kvm default of 32m)
|
|
# we set a very hight default of 8192m which is basically unlimited
|
|
my $migrate_speed = $defaults->{migrate_speed} || 8192;
|
|
$migrate_speed = $conf->{migrate_speed} || $migrate_speed;
|
|
$migrate_speed = $migrate_speed * 1048576;
|
|
$self->log('info', "migrate_set_speed: $migrate_speed");
|
|
eval {
|
|
PVE::QemuServer::vm_mon_cmd_nocheck($vmid, "migrate_set_speed", value => int($migrate_speed));
|
|
};
|
|
$self->log('info', "migrate_set_speed error: $@") if $@;
|
|
|
|
my $migrate_downtime = $defaults->{migrate_downtime};
|
|
$migrate_downtime = $conf->{migrate_downtime} if defined($conf->{migrate_downtime});
|
|
if (defined($migrate_downtime)) {
|
|
$self->log('info', "migrate_set_downtime: $migrate_downtime");
|
|
eval {
|
|
PVE::QemuServer::vm_mon_cmd_nocheck($vmid, "migrate_set_downtime", value => int($migrate_downtime*100)/100);
|
|
};
|
|
$self->log('info', "migrate_set_downtime error: $@") if $@;
|
|
}
|
|
|
|
$self->log('info', "set migration_caps");
|
|
eval {
|
|
PVE::QemuServer::set_migration_caps($vmid);
|
|
};
|
|
warn $@ if $@;
|
|
|
|
#set cachesize 10% of the total memory
|
|
my $cachesize = int($conf->{memory}*1048576/10);
|
|
$self->log('info', "set cachesize: $cachesize");
|
|
eval {
|
|
PVE::QemuServer::vm_mon_cmd_nocheck($vmid, "migrate-set-cache-size", value => int($cachesize));
|
|
};
|
|
$self->log('info', "migrate-set-cache-size error: $@") if $@;
|
|
|
|
if (PVE::QemuServer::vga_conf_has_spice($conf->{vga})) {
|
|
my $rpcenv = PVE::RPCEnvironment::get();
|
|
my $authuser = $rpcenv->get_user();
|
|
|
|
my (undef, $proxyticket) = PVE::AccessControl::assemble_spice_ticket($authuser, $vmid, $self->{node});
|
|
|
|
my $filename = "/etc/pve/nodes/$self->{node}/pve-ssl.pem";
|
|
my $subject = PVE::AccessControl::read_x509_subject_spice($filename);
|
|
|
|
$self->log('info', "spice client_migrate_info");
|
|
|
|
eval {
|
|
PVE::QemuServer::vm_mon_cmd_nocheck($vmid, "client_migrate_info", protocol => 'spice',
|
|
hostname => $proxyticket, 'tls-port' => $spice_port,
|
|
'cert-subject' => $subject);
|
|
};
|
|
$self->log('info', "client_migrate_info error: $@") if $@;
|
|
|
|
}
|
|
|
|
$self->log('info', "start migrate command to $ruri");
|
|
eval {
|
|
PVE::QemuServer::vm_mon_cmd_nocheck($vmid, "migrate", uri => $ruri);
|
|
};
|
|
my $merr = $@;
|
|
$self->log('info', "migrate uri => $ruri failed: $merr") if $merr;
|
|
|
|
my $lstat = 0;
|
|
my $usleep = 2000000;
|
|
my $i = 0;
|
|
my $err_count = 0;
|
|
my $lastrem = undef;
|
|
my $downtimecounter = 0;
|
|
while (1) {
|
|
$i++;
|
|
my $avglstat = $lstat/$i if $lstat;
|
|
|
|
usleep($usleep);
|
|
my $stat;
|
|
eval {
|
|
$stat = PVE::QemuServer::vm_mon_cmd_nocheck($vmid, "query-migrate");
|
|
};
|
|
if (my $err = $@) {
|
|
$err_count++;
|
|
warn "query migrate failed: $err\n";
|
|
$self->log('info', "query migrate failed: $err");
|
|
if ($err_count <= 5) {
|
|
usleep(1000000);
|
|
next;
|
|
}
|
|
die "too many query migrate failures - aborting\n";
|
|
}
|
|
|
|
if (defined($stat->{status}) && $stat->{status} =~ m/^(setup)$/im) {
|
|
sleep(1);
|
|
next;
|
|
}
|
|
|
|
if (defined($stat->{status}) && $stat->{status} =~ m/^(active|completed|failed|cancelled)$/im) {
|
|
$merr = undef;
|
|
$err_count = 0;
|
|
if ($stat->{status} eq 'completed') {
|
|
my $delay = time() - $start;
|
|
if ($delay > 0) {
|
|
my $mbps = sprintf "%.2f", $conf->{memory}/$delay;
|
|
my $downtime = $stat->{downtime} || 0;
|
|
$self->log('info', "migration speed: $mbps MB/s - downtime $downtime ms");
|
|
}
|
|
}
|
|
|
|
if ($stat->{status} eq 'failed' || $stat->{status} eq 'cancelled') {
|
|
$self->log('info', "migration status error: $stat->{status}");
|
|
die "aborting\n"
|
|
}
|
|
|
|
if ($stat->{status} ne 'active') {
|
|
$self->log('info', "migration status: $stat->{status}");
|
|
last;
|
|
}
|
|
|
|
if ($stat->{ram}->{transferred} ne $lstat) {
|
|
my $trans = $stat->{ram}->{transferred} || 0;
|
|
my $rem = $stat->{ram}->{remaining} || 0;
|
|
my $total = $stat->{ram}->{total} || 0;
|
|
my $xbzrlecachesize = $stat->{"xbzrle-cache"}->{"cache-size"} || 0;
|
|
my $xbzrlebytes = $stat->{"xbzrle-cache"}->{"bytes"} || 0;
|
|
my $xbzrlepages = $stat->{"xbzrle-cache"}->{"pages"} || 0;
|
|
my $xbzrlecachemiss = $stat->{"xbzrle-cache"}->{"cache-miss"} || 0;
|
|
my $xbzrleoverflow = $stat->{"xbzrle-cache"}->{"overflow"} || 0;
|
|
#reduce sleep if remainig memory if lower than the everage transfert
|
|
$usleep = 300000 if $avglstat && $rem < $avglstat;
|
|
|
|
$self->log('info', "migration status: $stat->{status} (transferred ${trans}, " .
|
|
"remaining ${rem}), total ${total})");
|
|
|
|
if (${xbzrlecachesize}) {
|
|
$self->log('info', "migration xbzrle cachesize: ${xbzrlecachesize} transferred ${xbzrlebytes} pages ${xbzrlepages} cachemiss ${xbzrlecachemiss} overflow ${xbzrleoverflow}");
|
|
}
|
|
|
|
if (($lastrem && $rem > $lastrem ) || ($rem == 0)) {
|
|
$downtimecounter++;
|
|
}
|
|
$lastrem = $rem;
|
|
|
|
if ($downtimecounter > 5) {
|
|
$downtimecounter = 0;
|
|
$migrate_downtime *= 2;
|
|
$self->log('info', "migrate_set_downtime: $migrate_downtime");
|
|
eval {
|
|
PVE::QemuServer::vm_mon_cmd_nocheck($vmid, "migrate_set_downtime", value => int($migrate_downtime*100)/100);
|
|
};
|
|
$self->log('info', "migrate_set_downtime error: $@") if $@;
|
|
}
|
|
|
|
}
|
|
|
|
|
|
$lstat = $stat->{ram}->{transferred};
|
|
|
|
} else {
|
|
die $merr if $merr;
|
|
die "unable to parse migration status '$stat->{status}' - aborting\n";
|
|
}
|
|
}
|
|
|
|
# just to be sure that the tunnel gets closed on successful migration, on error
|
|
# phase2_cleanup closes it *after* stopping the remote waiting VM
|
|
if (!$self->{errors} && $self->{tunnel}) {
|
|
eval { finish_tunnel($self, $self->{tunnel}); };
|
|
if (my $err = $@) {
|
|
$self->log('err', $err);
|
|
$self->{errors} = 1;
|
|
}
|
|
}
|
|
}
|
|
|
|
sub phase2_cleanup {
|
|
my ($self, $vmid, $err) = @_;
|
|
|
|
return if !$self->{errors};
|
|
$self->{phase2errors} = 1;
|
|
|
|
$self->log('info', "aborting phase 2 - cleanup resources");
|
|
|
|
$self->log('info', "migrate_cancel");
|
|
eval {
|
|
PVE::QemuServer::vm_mon_cmd_nocheck($vmid, "migrate_cancel");
|
|
};
|
|
$self->log('info', "migrate_cancel error: $@") if $@;
|
|
|
|
my $conf = $self->{vmconf};
|
|
delete $conf->{lock};
|
|
eval { PVE::QemuConfig->write_config($vmid, $conf) };
|
|
if (my $err = $@) {
|
|
$self->log('err', $err);
|
|
}
|
|
|
|
# cleanup ressources on target host
|
|
if ($self->{storage_migration}) {
|
|
|
|
eval { PVE::QemuServer::qemu_blockjobs_cancel($vmid, $self->{storage_migration_jobs}) };
|
|
if (my $err = $@) {
|
|
$self->log('err', $err);
|
|
}
|
|
|
|
eval { PVE::QemuMigrate::cleanup_remotedisks($self) };
|
|
if (my $err = $@) {
|
|
$self->log('err', $err);
|
|
}
|
|
}
|
|
|
|
my $nodename = PVE::INotify::nodename();
|
|
|
|
my $cmd = [@{$self->{rem_ssh}}, 'qm', 'stop', $vmid, '--skiplock', '--migratedfrom', $nodename];
|
|
eval{ PVE::Tools::run_command($cmd, outfunc => sub {}, errfunc => sub {}) };
|
|
if (my $err = $@) {
|
|
$self->log('err', $err);
|
|
$self->{errors} = 1;
|
|
}
|
|
|
|
if ($self->{tunnel}) {
|
|
eval { finish_tunnel($self, $self->{tunnel}); };
|
|
if (my $err = $@) {
|
|
$self->log('err', $err);
|
|
$self->{errors} = 1;
|
|
}
|
|
}
|
|
}
|
|
|
|
sub phase3 {
|
|
my ($self, $vmid) = @_;
|
|
|
|
my $volids = $self->{volumes};
|
|
return if $self->{phase2errors};
|
|
|
|
# destroy local copies
|
|
foreach my $volid (@$volids) {
|
|
eval { PVE::Storage::vdisk_free($self->{storecfg}, $volid); };
|
|
if (my $err = $@) {
|
|
$self->log('err', "removing local copy of '$volid' failed - $err");
|
|
$self->{errors} = 1;
|
|
last if $err =~ /^interrupted by signal$/;
|
|
}
|
|
}
|
|
}
|
|
|
|
sub phase3_cleanup {
|
|
my ($self, $vmid, $err) = @_;
|
|
|
|
my $conf = $self->{vmconf};
|
|
return if $self->{phase2errors};
|
|
|
|
if ($self->{storage_migration}) {
|
|
# finish block-job
|
|
eval { PVE::QemuServer::qemu_drive_mirror_monitor($vmid, undef, $self->{storage_migration_jobs}); };
|
|
|
|
if (my $err = $@) {
|
|
eval { PVE::QemuServer::qemu_blockjobs_cancel($vmid, $self->{storage_migration_jobs}) };
|
|
eval { PVE::QemuMigrate::cleanup_remotedisks($self) };
|
|
die "Failed to completed storage migration\n";
|
|
} else {
|
|
foreach my $target_drive (keys %{$self->{target_drive}}) {
|
|
my $drive = PVE::QemuServer::parse_drive($target_drive, $self->{target_drive}->{$target_drive}->{volid});
|
|
$conf->{$target_drive} = PVE::QemuServer::print_drive($vmid, $drive);
|
|
PVE::QemuConfig->write_config($vmid, $conf);
|
|
}
|
|
}
|
|
}
|
|
|
|
# move config to remote node
|
|
my $conffile = PVE::QemuConfig->config_file($vmid);
|
|
my $newconffile = PVE::QemuConfig->config_file($vmid, $self->{node});
|
|
|
|
die "Failed to move config to node '$self->{node}' - rename failed: $!\n"
|
|
if !rename($conffile, $newconffile);
|
|
|
|
if ($self->{livemigration}) {
|
|
if ($self->{storage_migration}) {
|
|
# remove drives referencing the nbd server from source
|
|
# otherwise vm_stop might hang later on
|
|
foreach my $drive (keys %{$self->{target_drive}}){
|
|
PVE::QemuServer::vm_mon_cmd_nocheck($vmid, "device_del", id => $drive);
|
|
}
|
|
# stop nbd server on remote vm - requirement for resume since 2.9
|
|
my $cmd = [@{$self->{rem_ssh}}, 'qm', 'nbdstop', $vmid];
|
|
|
|
eval{ PVE::Tools::run_command($cmd, outfunc => sub {}, errfunc => sub {}) };
|
|
if (my $err = $@) {
|
|
$self->log('err', $err);
|
|
$self->{errors} = 1;
|
|
}
|
|
}
|
|
# config moved and nbd server stopped - now we can resume vm on target
|
|
my $cmd = [@{$self->{rem_ssh}}, 'qm', 'resume', $vmid, '--skiplock', '--nocheck'];
|
|
eval{ PVE::Tools::run_command($cmd, outfunc => sub {},
|
|
errfunc => sub {
|
|
my $line = shift;
|
|
$self->log('err', $line);
|
|
});
|
|
};
|
|
if (my $err = $@) {
|
|
$self->log('err', $err);
|
|
$self->{errors} = 1;
|
|
}
|
|
}
|
|
|
|
eval {
|
|
my $timer = 0;
|
|
if (PVE::QemuServer::vga_conf_has_spice($conf->{vga}) && $self->{running}) {
|
|
$self->log('info', "Waiting for spice server migration");
|
|
while (1) {
|
|
my $res = PVE::QemuServer::vm_mon_cmd_nocheck($vmid, 'query-spice');
|
|
last if int($res->{'migrated'}) == 1;
|
|
last if $timer > 50;
|
|
$timer ++;
|
|
usleep(200000);
|
|
}
|
|
}
|
|
};
|
|
|
|
# always stop local VM
|
|
eval { PVE::QemuServer::vm_stop($self->{storecfg}, $vmid, 1, 1); };
|
|
if (my $err = $@) {
|
|
$self->log('err', "stopping vm failed - $err");
|
|
$self->{errors} = 1;
|
|
}
|
|
|
|
# always deactivate volumes - avoid lvm LVs to be active on several nodes
|
|
eval {
|
|
my $vollist = PVE::QemuServer::get_vm_volumes($conf);
|
|
PVE::Storage::deactivate_volumes($self->{storecfg}, $vollist);
|
|
};
|
|
if (my $err = $@) {
|
|
$self->log('err', $err);
|
|
$self->{errors} = 1;
|
|
}
|
|
|
|
if($self->{storage_migration}) {
|
|
# destroy local copies
|
|
my $volids = $self->{online_local_volumes};
|
|
|
|
foreach my $volid (@$volids) {
|
|
eval { PVE::Storage::vdisk_free($self->{storecfg}, $volid); };
|
|
if (my $err = $@) {
|
|
$self->log('err', "removing local copy of '$volid' failed - $err");
|
|
$self->{errors} = 1;
|
|
last if $err =~ /^interrupted by signal$/;
|
|
}
|
|
}
|
|
|
|
}
|
|
|
|
# clear migrate lock
|
|
my $cmd = [ @{$self->{rem_ssh}}, 'qm', 'unlock', $vmid ];
|
|
$self->cmd_logerr($cmd, errmsg => "failed to clear migrate lock");
|
|
}
|
|
|
|
sub final_cleanup {
|
|
my ($self, $vmid) = @_;
|
|
|
|
# nothing to do
|
|
}
|
|
|
|
1;
|