mirror of
git://git.proxmox.com/git/qemu-server.git
synced 2025-02-02 09:47:13 +03:00
use new AbstractMigrate.pm
This commit is contained in:
Dietmar Maurer
parent
2b05ac1331
commit
16e903f2dc
@ -1232,7 +1232,7 @@ __PACKAGE__->register_method({
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my $realcmd = sub {
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my $upid = shift;
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PVE::QemuMigrate::migrate($target, $targetip, $vmid, $param->{online}, $param->{force});
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PVE::QemuMigrate->migrate($target, $targetip, $vmid, $param);
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};
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my $upid = $rpcenv->fork_worker('qmigrate', $vmid, $user, $realcmd);
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@ -2,63 +2,15 @@ package PVE::QemuMigrate;
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use strict;
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use warnings;
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use POSIX qw(strftime);
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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 PVE::Tools qw(run_command);
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use PVE::INotify;
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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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my $delayed_interrupt = 0;
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# blowfish is a fast block cipher, much faster then 3des
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my @ssh_opts = ('-c', 'blowfish', '-o', 'BatchMode=yes');
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my @ssh_cmd = ('/usr/bin/ssh', @ssh_opts);
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my @scp_cmd = ('/usr/bin/scp', @ssh_opts);
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my $qm_cmd = '/usr/sbin/qm';
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sub logmsg {
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my ($level, $msg) = @_;
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chomp $msg;
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return if !$msg;
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my $tstr = strftime("%b %d %H:%M:%S", localtime);
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foreach my $line (split (/\n/, $msg)) {
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if ($level eq 'err') {
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print STDOUT "$tstr ERROR: $line\n";
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} else {
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print STDOUT "$tstr $line\n";
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}
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}
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\*STDOUT->flush();
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}
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sub eval_int {
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my ($func) = @_;
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eval {
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local $SIG{INT} = $SIG{TERM} = $SIG{QUIT} = $SIG{HUP} = sub {
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$delayed_interrupt = 0;
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die "interrupted by signal\n";
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};
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local $SIG{PIPE} = sub {
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$delayed_interrupt = 0;
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die "interrupted by signal\n";
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};
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my $di = $delayed_interrupt;
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$delayed_interrupt = 0;
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die "interrupted by signal\n" if $di;
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&$func();
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};
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}
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use base qw(PVE::AbstractMigrate);
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sub fork_command_pipe {
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my ($cmd) = @_;
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@ -137,10 +89,9 @@ sub run_with_timeout {
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}
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sub fork_tunnel {
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my ($nodeip, $lport, $rport) = @_;
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my ($self, $nodeip, $lport, $rport) = @_;
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my $cmd = [@ssh_cmd, '-o', 'BatchMode=yes',
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'-L', "$lport:localhost:$rport", $nodeip,
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my $cmd = [@{$self->{rem_ssh}}, '-L', "$lport:localhost:$rport",
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'qm', 'mtunnel' ];
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my $tunnel = fork_command_pipe($cmd);
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@ -165,7 +116,7 @@ sub fork_tunnel {
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}
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sub finish_tunnel {
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my $tunnel = shift;
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my ($self, $tunnel) = @_;
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my $writer = $tunnel->{writer};
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@ -182,181 +133,60 @@ sub finish_tunnel {
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die $err if $err;
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}
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sub migrate {
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my ($node, $nodeip, $vmid, $online, $force) = @_;
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sub lock_vm {
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my ($self, $vmid, $code, @param) = @_;
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my $starttime = time();
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my $rem_ssh = [@ssh_cmd, "root\@$nodeip"];
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local $SIG{INT} = $SIG{TERM} = $SIG{QUIT} = $SIG{HUP} = $SIG{PIPE} = sub {
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logmsg('err', "received interrupt - delayed");
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$delayed_interrupt = 1;
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};
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local $ENV{RSYNC_RSH} = join(' ', @ssh_cmd);
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my $session = {
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vmid => $vmid,
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node => $node,
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nodeip => $nodeip,
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force => $force,
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storecfg => PVE::Storage::config(),
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rem_ssh => $rem_ssh,
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};
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my $errors;
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# lock config during migration
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eval { PVE::QemuServer::lock_config($vmid, sub {
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my $conf;
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eval_int(sub { $conf = prepare($session); });
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die $@ if $@;
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my $running = 0;
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if (my $pid = PVE::QemuServer::check_running($vmid)) {
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die "cant migrate running VM without --online\n" if !$online;
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$running = $pid;
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}
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my $rhash = {};
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eval_int (sub { phase1($session, $conf, $rhash, $running); });
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my $err = $@;
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if ($err) {
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if ($rhash->{clearlock}) {
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my $unset = { lock => 1 };
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eval { PVE::QemuServer::change_config_nolock($session->{vmid}, {}, $unset, 1) };
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if (my $tmperr = $@) {
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logmsg('err', $tmperr);
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}
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}
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if ($rhash->{volumes}) {
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foreach my $volid (@{$rhash->{volumes}}) {
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logmsg('err', "found stale volume copy '$volid' on node '$session->{node}'");
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}
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}
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die $err;
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}
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# vm is now owned by other node
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# Note: there is no VM config file on the local node anymore, so
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# we need to pass $nocheck = 1 for vm commands
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my $volids = $rhash->{volumes};
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if ($running) {
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$rhash = {};
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eval_int(sub { phase2($session, $conf, $rhash); });
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my $err = $@;
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# always kill tunnel
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if ($rhash->{tunnel}) {
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eval_int(sub { finish_tunnel($rhash->{tunnel}) });
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if (my $tmperr = $@) {
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logmsg('err', "stopping tunnel failed - $tmperr");
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$errors = 1;
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}
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}
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# always stop local VM - no interrupts possible
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eval { PVE::QemuServer::vm_stop($session->{storecfg}, $session->{vmid}, 1, 1); };
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if (my $tmperr = $@) {
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logmsg('err', "stopping vm failed - $tmperr");
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$errors = 1;
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}
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if ($err) {
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$errors = 1;
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logmsg('err', "online migrate failure - $err");
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}
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}
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# finalize -- clear migrate lock
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eval_int(sub {
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my $cmd = [ @{$session->{rem_ssh}}, $qm_cmd, 'unlock', $session->{vmid} ];
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run_command($cmd);
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});
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if (my $tmperr = $@) {
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logmsg('err', "failed to clear migrate lock - $tmperr");
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$errors = 1;
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}
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# destroy local copies
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foreach my $volid (@$volids) {
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eval_int(sub { PVE::Storage::vdisk_free($session->{storecfg}, $volid); });
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my $err = $@;
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if ($err) {
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logmsg('err', "removing local copy of '$volid' failed - $err");
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$errors = 1;
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last if $err =~ /^interrupted by signal$/;
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}
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}
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# always deactivate volumes - avoid lvm LVs to be active on
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# several nodes
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eval {
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my $vollist = PVE::QemuServer::get_vm_volumes($conf);
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PVE::Storage::deactivate_volumes($session->{storecfg}, $vollist);
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};
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if (my $tmperr = $@) {
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logmsg('err', $tmperr);
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$errors = 1;
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}
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})};
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my $err = $@;
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my $delay = time() - $starttime;
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my $mins = int($delay/60);
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my $secs = $delay - $mins*60;
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my $hours = int($mins/60);
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$mins = $mins - $hours*60;
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my $duration = sprintf "%02d:%02d:%02d", $hours, $mins, $secs;
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if ($err) {
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logmsg('err', "migration aborted (duration $duration): $err");
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die "migration aborted\n";
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}
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if ($errors) {
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logmsg('err', "migration finished with problems (duration $duration)");
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die "migration problems\n"
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}
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logmsg('info', "migration finished successfuly (duration $duration)");
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return PVE::QemuServer::lock_config($vmid, $code, @param);
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}
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sub prepare {
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my ($session) = @_;
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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 is VM exist
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my $conf = PVE::QemuServer::load_config($session->{vmid});
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my $conf = $self->{vmconf} = PVE::QemuServer::load_config($vmid);
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PVE::QemuServer::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 "cant migrate running VM without --online\n" if !$online;
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$running = $pid;
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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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# activate volumes
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my $vollist = PVE::QemuServer::get_vm_volumes($conf);
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PVE::Storage::activate_volumes($session->{storecfg}, $vollist);
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PVE::Storage::activate_volumes($self->{storecfg}, $vollist);
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# fixme: check if storage is available on both nodes
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# test ssh connection
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my $cmd = [ @{$session->{rem_ssh}}, '/bin/true' ];
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eval { run_command($cmd); };
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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 $conf;
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return $running;
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}
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sub sync_disks {
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my ($session, $conf, $rhash, $running) = @_;
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my ($self, $vmid) = @_;
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logmsg('info', "copying disk images");
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$self->log('info', "copying disk images");
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my $conf = $self->{vmconf};
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$self->{volumes} = [];
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my $res = [];
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@ -366,11 +196,13 @@ sub sync_disks {
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my $cdromhash = {};
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# get list from PVE::Storage (for unused volumes)
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my $dl = PVE::Storage::vdisk_list($session->{storecfg}, undef, $session->{vmid});
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my $dl = PVE::Storage::vdisk_list($self->{storecfg}, undef, $vmid);
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PVE::Storage::foreach_volid($dl, sub {
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my ($volid, $sid, $volname) = @_;
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my $scfg = PVE::Storage::storage_config($session->{storecfg}, $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}, $sid, $self->{node});
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return if $scfg->{shared};
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@ -396,7 +228,9 @@ sub sync_disks {
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my ($sid, $volname) = PVE::Storage::parse_volume_id($volid);
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my $scfg = PVE::Storage::storage_config($session->{storecfg}, $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}, $sid, $self->{node});
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return if $scfg->{shared};
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@ -404,22 +238,22 @@ sub sync_disks {
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$sharedvm = 0;
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my ($path, $owner) = PVE::Storage::path($session->{storecfg}, $volid);
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my ($path, $owner) = PVE::Storage::path($self->{storecfg}, $volid);
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die "can't migrate volume '$volid' - owned by other VM (owner = VM $owner)\n"
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if !$owner || ($owner != $session->{vmid});
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if !$owner || ($owner != $self->{vmid});
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$volhash->{$volid} = 1;
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});
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if ($running && !$sharedvm) {
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if ($self->{running} && !$sharedvm) {
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die "can't do online migration - VM uses local disks\n";
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}
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# do some checks first
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foreach my $volid (keys %$volhash) {
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my ($sid, $volname) = PVE::Storage::parse_volume_id($volid);
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my $scfg = PVE::Storage::storage_config($session->{storecfg}, $sid);
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my $scfg = PVE::Storage::storage_config($self->{storecfg}, $sid);
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die "can't migrate '$volid' - storagy type '$scfg->{type}' not supported\n"
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if $scfg->{type} ne 'dir';
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@ -427,53 +261,66 @@ sub sync_disks {
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foreach my $volid (keys %$volhash) {
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my ($sid, $volname) = PVE::Storage::parse_volume_id($volid);
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push @{$rhash->{volumes}}, $volid;
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PVE::Storage::storage_migrate($session->{storecfg}, $volid, $session->{nodeip}, $sid);
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push @{$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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die "Failed to sync data - $@" if $@;
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}
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sub phase1 {
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my ($session, $conf, $rhash, $running) = @_;
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my ($self, $vmid) = @_;
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logmsg('info', "starting migration of VM $session->{vmid} to node '$session->{node}' ($session->{nodeip})");
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$self->log('info', "starting migration of VM $vmid to node '$self->{node}' ($self->{nodeip})");
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if (my $loc_res = PVE::QemuServer::check_local_resources($conf, 1)) {
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if ($running || !$session->{force}) {
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die "can't migrate VM which uses local devices\n";
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} else {
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logmsg('info', "migrating VM which uses local devices");
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}
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}
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my $conf = $self->{vmconf};
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# set migrate lock in config file
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$rhash->{clearlock} = 1;
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PVE::QemuServer::change_config_nolock($vmid, { lock => 'migrate' }, {}, 1);
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PVE::QemuServer::change_config_nolock($session->{vmid}, { lock => 'migrate' }, {}, 1);
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sync_disks($session, $conf, $rhash, $running);
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sync_disks($self, $vmid);
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# move config to remote node
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my $conffile = PVE::QemuServer::config_file($session->{vmid});
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my $newconffile = PVE::QemuServer::config_file($session->{vmid}, $session->{node});
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my $conffile = PVE::QemuServer::config_file($vmid);
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my $newconffile = PVE::QemuServer::config_file($vmid, $self->{node});
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die "Failed to move config to node '$session->{node}' - rename failed: $!\n"
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die "Failed to move config to node '$self->{node}' - rename failed: $!\n"
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if !rename($conffile, $newconffile);
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};
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sub phase2 {
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my ($session, $conf, $rhash) = @_;
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sub phase1_cleanup {
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my ($self, $vmid, $err) = @_;
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logmsg('info', "starting VM on remote node '$session->{node}'");
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$self->log('info', "aborting phase 1 - cleanup resources");
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my $unset = { lock => 1 };
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eval { PVE::QemuServer::change_config_nolock($vmid, {}, $unset, 1) };
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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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logmsg('info', "starting VM $vmid on remote node '$self->{node}'");
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my $rport;
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## start on remote node
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my $cmd = [@{$session->{rem_ssh}}, $qm_cmd, 'start',
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$session->{vmid}, '--stateuri', 'tcp', '--skiplock'];
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my $cmd = [@{$self->{rem_ssh}}, 'qm', 'start',
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$vmid, '--stateuri', 'tcp', '--skiplock'];
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run_command($cmd, outfunc => sub {
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$self->cmd($cmd, outfunc => sub {
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my $line = shift;
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if ($line =~ m/^migration listens on port (\d+)$/) {
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@ -483,23 +330,23 @@ sub phase2 {
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die "unable to detect remote migration port\n" if !$rport;
|
||||
|
||||
logmsg('info', "starting migration tunnel");
|
||||
$self->log('info', "starting migration tunnel");
|
||||
|
||||
## create tunnel to remote port
|
||||
my $lport = PVE::QemuServer::next_migrate_port();
|
||||
$rhash->{tunnel} = fork_tunnel($session->{nodeip}, $lport, $rport);
|
||||
$self->{tunnel} = $self->fork_tunnel($self->{nodeip}, $lport, $rport);
|
||||
|
||||
logmsg('info', "starting online/live migration");
|
||||
$self->log('info', "starting online/live migration");
|
||||
# start migration
|
||||
|
||||
my $start = time();
|
||||
|
||||
PVE::QemuServer::vm_monitor_command($session->{vmid}, "migrate -d \"tcp:localhost:$lport\"", 1);
|
||||
PVE::QemuServer::vm_monitor_command($vmid, "migrate -d \"tcp:localhost:$lport\"", 1);
|
||||
|
||||
my $lstat = '';
|
||||
while (1) {
|
||||
sleep (2);
|
||||
my $stat = PVE::QemuServer::vm_monitor_command($session->{vmid}, "info migrate", 1);
|
||||
my $stat = PVE::QemuServer::vm_monitor_command($vmid, "info migrate", 1);
|
||||
if ($stat =~ m/^Migration status: (active|completed|failed|cancelled)$/im) {
|
||||
my $ms = $1;
|
||||
|
||||
@ -510,10 +357,10 @@ sub phase2 {
|
||||
$rem = $1 if $stat =~ m/^remaining ram: (\d+) kbytes$/im;
|
||||
$total = $1 if $stat =~ m/^total ram: (\d+) kbytes$/im;
|
||||
|
||||
logmsg('info', "migration status: $ms (transferred ${trans}KB, " .
|
||||
"remaining ${rem}KB), total ${total}KB)");
|
||||
$self->log('info', "migration status: $ms (transferred ${trans}KB, " .
|
||||
"remaining ${rem}KB), total ${total}KB)");
|
||||
} else {
|
||||
logmsg('info', "migration status: $ms");
|
||||
$self->log('info', "migration status: $ms");
|
||||
}
|
||||
}
|
||||
|
||||
@ -521,7 +368,7 @@ sub phase2 {
|
||||
my $delay = time() - $start;
|
||||
if ($delay > 0) {
|
||||
my $mbps = sprintf "%.2f", $conf->{memory}/$delay;
|
||||
logmsg('info', "migration speed: $mbps MB/s");
|
||||
$self->log('info', "migration speed: $mbps MB/s");
|
||||
}
|
||||
}
|
||||
|
||||
@ -536,3 +383,62 @@ sub phase2 {
|
||||
$lstat = $stat;
|
||||
};
|
||||
}
|
||||
|
||||
sub phase3 {
|
||||
my ($self, $vmid) = @_;
|
||||
|
||||
my $volids = $self->{volumes};
|
||||
|
||||
# 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 $err =~ /^interrupted by signal$/;
|
||||
}
|
||||
}
|
||||
|
||||
if ($self->{tunnel}) {
|
||||
eval { finish_tunnel($self, $self->{tunnel}); };
|
||||
if (my $err = $@) {
|
||||
$self->log('err', $err);
|
||||
$self->{errors} = 1;
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
sub phase3_cleanup {
|
||||
my ($self, $vmid, $err) = @_;
|
||||
|
||||
my $conf = $self->{vmconf};
|
||||
|
||||
# always stop local VM
|
||||
eval { PVE::QemuServer::vm_stop($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;
|
||||
}
|
||||
|
||||
# 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;
|
||||
|
||||
Loading…
x
Reference in New Issue
Block a user