migrate: only use import/export
This replaces the path-based and lvm/thin special cases in storage_migrate with the already generic-enough zfspool case which is already using import/export and does not directly depend on zfs anymore.
This commit is contained in:
Wolfgang Bumiller
committed by
Dietmar Maurer
Dietmar Maurer
parent
5cbbc78fdb
commit
da72898cc6
241
PVE/Storage.pm
241
PVE/Storage.pm
@ -546,186 +546,77 @@ sub storage_migrate {
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my $ssh_base = PVE::Cluster::ssh_info_to_command_base($target_sshinfo);
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local $ENV{RSYNC_RSH} = PVE::Tools::cmd2string($ssh_base);
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my $no_incremental = sub {
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my ($type) = @_;
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die "incremental migration not supported on storage type $type\n"
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if defined($base_snapshot);
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};
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my $no_snapshot = sub {
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my ($type) = @_;
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# $snapshot is currently only used by replication
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die "replicating storage migration not supported on storage type $type\n"
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if defined($snapshot);
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};
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my @cstream = ([ '/usr/bin/cstream', '-t', $ratelimit_bps ])
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if defined($ratelimit_bps);
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# only implemented for file system based storage
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if ($scfg->{path}) {
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$no_incremental->($scfg->{type});
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$no_snapshot->($scfg->{type});
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if ($tcfg->{path}) {
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my $src_plugin = PVE::Storage::Plugin->lookup($scfg->{type});
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my $dst_plugin = PVE::Storage::Plugin->lookup($tcfg->{type});
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my $src = $src_plugin->path($scfg, $volname, $storeid);
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my $dst = $dst_plugin->path($tcfg, $target_volname, $target_storeid);
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my $dirname = dirname($dst);
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if ($tcfg->{shared}) { # we can do a local copy
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run_command(['/bin/mkdir', '-p', $dirname]);
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run_command(['/bin/cp', $src, $dst]);
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} else {
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run_command([@$ssh, '/bin/mkdir', '-p', $dirname]);
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# we use rsync with --sparse, so we can't use --inplace,
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# so we remove file on the target if it already exists to
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# save space
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my ($size, $format) = PVE::Storage::Plugin::file_size_info($src);
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if ($format && ($format eq 'raw') && $size) {
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run_command([@$ssh, 'rm', '-f', $dst],
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outfunc => sub {});
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}
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my $cmd;
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my @bwlimit = ("--bwlimit=${ratelimit_bps}b") if defined($ratelimit_bps);
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if ($format eq 'subvol') {
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$cmd = ['/usr/bin/rsync', '--progress', '-X', '-A', '--numeric-ids',
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'-aH', '--delete', '--no-whole-file', '--inplace',
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'--one-file-system', @bwlimit,
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"$src/", "[root\@${target_ip}]:$dst"];
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} else {
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$cmd = ['/usr/bin/rsync', '--progress', '--sparse', '--whole-file',
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@bwlimit,
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$src, "[root\@${target_ip}]:$dst"];
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}
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my $percent = -1;
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run_command($cmd, outfunc => sub {
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my $line = shift;
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if ($line =~ m/^\s*(\d+\s+(\d+)%\s.*)$/) {
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if ($2 > $percent) {
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$percent = $2;
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print "rsync status: $1\n";
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*STDOUT->flush();
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}
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} else {
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print "$line\n";
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*STDOUT->flush();
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}
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});
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}
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} else {
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die "$errstr - target type '$tcfg->{type}' not implemented\n";
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my $migration_snapshot;
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if (!defined($snapshot)) {
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if ($scfg->{type} eq 'zfspool') {
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$migration_snapshot = 1;
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$snapshot = '__migration__';
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}
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} elsif ($scfg->{type} eq 'zfspool') {
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if ($tcfg->{type} eq 'zfspool') {
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die "$errstr - pool on target does not have the same name as on source!"
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if $tcfg->{pool} ne $scfg->{pool};
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my $migration_snapshot;
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if (!defined($snapshot)) {
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$migration_snapshot = 1;
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$snapshot = '__migration__';
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}
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my (undef, $volname) = parse_volname($cfg, $volid);
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my $zfspath = "$scfg->{pool}\/$volname";
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my @formats = volume_transfer_formats($cfg, $volid, $volid, $snapshot, $base_snapshot, 1);
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die "cannot migrate from storage type '$scfg->{type}' to '$tcfg->{type}'\n" if !@formats;
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my $format = $formats[0];
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my @insecurecmd;
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if ($insecure) {
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@insecurecmd = ('pvecm', 'mtunnel', '-run-command', 1);
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if (my $network = $target_sshinfo->{network}) {
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push @insecurecmd, '-migration_network', $network;
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}
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}
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my $send = ['pvesm', 'export', $volid, $format, '-', '-snapshot', $snapshot, '-with-snapshots', '1'];
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my $recv = [@$ssh, @insecurecmd, '--', 'pvesm', 'import', $volid, $format, '-', '-with-snapshots', '1'];
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if ($migration_snapshot) {
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push @$recv, '-delete-snapshot', $snapshot;
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}
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if (defined($base_snapshot)) {
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# Check if the snapshot exists on the remote side:
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push @$send, '-base', $base_snapshot;
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push @$recv, '-base', $base_snapshot;
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}
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volume_snapshot($cfg, $volid, $snapshot) if $migration_snapshot;
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eval {
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if ($insecure) {
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my $pid = open(my $info, '-|', @$recv)
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or die "receive command failed: $!\n";
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my ($ip) = <$info> =~ /^($PVE::Tools::IPRE)$/ or die "no tunnel IP received\n";
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my ($port) = <$info> =~ /^(\d+)$/ or die "no tunnel port received\n";
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my $socket = IO::Socket::IP->new(PeerHost => $ip, PeerPort => $port, Type => SOCK_STREAM)
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or die "failed to connect to tunnel at $ip:$port\n";
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run_command([$send, @cstream], output => '>&'.fileno($socket));
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} else {
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run_command([$send, @cstream, $recv]);
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}
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};
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my $err = $@;
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warn "send/receive failed, cleaning up snapshot(s)..\n" if $err;
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if ($migration_snapshot) {
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eval { volume_snapshot_delete($cfg, $volid, $snapshot, 0) };
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warn "could not remove source snapshot: $@\n" if $@;
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}
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die $err if $err;
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} else {
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die "$errstr - target type $tcfg->{type} is not valid\n";
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}
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} elsif ($scfg->{type} eq 'lvmthin' || $scfg->{type} eq 'lvm') {
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$no_incremental->($scfg->{type});
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$no_snapshot->($scfg->{type});
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if (($scfg->{type} eq $tcfg->{type}) &&
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($tcfg->{type} eq 'lvmthin' || $tcfg->{type} eq 'lvm')) {
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my (undef, $volname, $vmid) = parse_volname($cfg, $volid);
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my $size = volume_size_info($cfg, $volid, 5);
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my $src = path($cfg, $volid);
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my $dst = path($cfg, $target_volid);
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run_command([@$ssh, '--',
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'pvesm', 'alloc', $target_storeid, $vmid,
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$target_volname, int($size/1024)]);
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eval {
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if ($tcfg->{type} eq 'lvmthin') {
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run_command([["dd", "if=$src", "bs=4k"], @cstream,
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[@$ssh, "dd", 'conv=sparse', "of=$dst", "bs=4k"]]);
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} else {
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run_command([["dd", "if=$src", "bs=4k"], @cstream,
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[@$ssh, "dd", "of=$dst", "bs=4k"]]);
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}
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};
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if (my $err = $@) {
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run_command([@$ssh, 'pvesm', 'free', $target_volid]);
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die $err;
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}
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} else {
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die "$errstr - migrate from source type '$scfg->{type}' to '$tcfg->{type}' not implemented\n";
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}
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} else {
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die "$errstr - source type '$scfg->{type}' not implemented\n";
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}
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my @formats = volume_transfer_formats($cfg, $volid, $volid, $snapshot, $base_snapshot, 1);
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die "cannot migrate from storage type '$scfg->{type}' to '$tcfg->{type}'\n" if !@formats;
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my $format = $formats[0];
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my @insecurecmd;
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if ($insecure) {
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@insecurecmd = ('pvecm', 'mtunnel', '-run-command', 1);
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if (my $network = $target_sshinfo->{network}) {
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push @insecurecmd, '-migration_network', $network;
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}
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}
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my $send = ['pvesm', 'export', $volid, $format, '-', '-with-snapshots', '1'];
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my $recv = [@$ssh, @insecurecmd, '--', 'pvesm', 'import', $volid, $format, '-', '-with-snapshots', '1'];
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if (defined($snapshot)) {
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push @$send, '-snapshot', $snapshot
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}
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if ($migration_snapshot) {
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push @$recv, '-delete-snapshot', $snapshot;
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}
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if (defined($base_snapshot)) {
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# Check if the snapshot exists on the remote side:
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push @$send, '-base', $base_snapshot;
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push @$recv, '-base', $base_snapshot;
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}
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volume_snapshot($cfg, $volid, $snapshot) if $migration_snapshot;
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eval {
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if ($insecure) {
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open(my $info, '-|', @$recv)
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or die "receive command failed: $!\n";
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my ($ip) = <$info> =~ /^($PVE::Tools::IPRE)$/ or die "no tunnel IP received\n";
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my ($port) = <$info> =~ /^(\d+)$/ or die "no tunnel port received\n";
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my $socket = IO::Socket::IP->new(PeerHost => $ip, PeerPort => $port, Type => SOCK_STREAM)
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or die "failed to connect to tunnel at $ip:$port\n";
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# we won't be reading from the socket
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shutdown($socket, 0);
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run_command([$send, @cstream], output => '>&'.fileno($socket));
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# don't close the connection entirely otherwise the receiving end
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# might not get all buffered data (and fails with 'connection reset by peer')
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shutdown($socket, 1);
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1 while <$info>; # wait for the remote process to finish
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# now close the socket
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close($socket);
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if (!close($info)) { # does waitpid()
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die "import failed: $!\n" if $!;
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die "import failed: exit code ".($?>>8)."\n";
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}
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} else {
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run_command([$send, @cstream, $recv]);
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}
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};
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my $err = $@;
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warn "send/receive failed, cleaning up snapshot(s)..\n" if $err;
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if ($migration_snapshot) {
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eval { volume_snapshot_delete($cfg, $volid, $snapshot, 0) };
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warn "could not remove source snapshot: $@\n" if $@;
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}
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die $err if $err;
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}
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sub vdisk_clone {
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