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storage_migrate: pull out import/export_prepare

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for re-use with remote migration, where import and export happen on
different clusters connected via a websocket instead of SSH tunnel.

Signed-off-by: Fabian Grünbichler <f.gruenbichler@proxmox.com>
This commit is contained in:
Fabian Grünbichler
2022-02-09 14:07:49 +01:00
committed by Thomas Lamprecht
parent 686b07376f
commit 7a158d0bc9
1 changed files with 70 additions and 43 deletions
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113
PVE/Storage.pm
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@ -651,16 +651,70 @@ sub storage_migrate_snapshot {
return $scfg->{type} eq 'zfspool' || ($scfg->{type} eq 'btrfs' && $existing_snapshots);
}
sub storage_migrate {
my ($cfg, $volid, $target_sshinfo, $target_storeid, $opts, $logfunc) = @_;
my $volume_import_prepare = sub {
my ($volid, $format, $path, $apiver, $opts) = @_;
my $base_snapshot = $opts->{base_snapshot};
my $snapshot = $opts->{snapshot};
my $ratelimit_bps = $opts->{ratelimit_bps};
my $insecure = $opts->{insecure};
my $with_snapshots = $opts->{with_snapshots} ? 1 : 0;
my $migration_snapshot = $opts->{migration_snapshot} ? 1 : 0;
my $allow_rename = $opts->{allow_rename} ? 1 : 0;
my $recv = ['pvesm', 'import', $volid, $format, $path, '-with-snapshots', $with_snapshots];
if (defined($snapshot)) {
push @$recv, '-snapshot', $snapshot;
}
if ($migration_snapshot) {
push @$recv, '-delete-snapshot', $snapshot;
}
push @$recv, '-allow-rename', $allow_rename if $apiver >= 5;
if (defined($base_snapshot)) {
# Check if the snapshot exists on the remote side:
push @$recv, '-base', $base_snapshot if $apiver >= 9;
}
return $recv;
};
my $volume_export_prepare = sub {
my ($cfg, $volid, $format, $logfunc, $opts) = @_;
my $base_snapshot = $opts->{base_snapshot};
my $snapshot = $opts->{snapshot};
my $with_snapshots = $opts->{with_snapshots} ? 1 : 0;
my $migration_snapshot = $opts->{migration_snapshot} ? 1 : 0;
my $ratelimit_bps = $opts->{ratelimit_bps};
my $send = ['pvesm', 'export', $volid, $format, '-', '-with-snapshots', $with_snapshots];
if (defined($snapshot)) {
push @$send, '-snapshot', $snapshot;
}
if (defined($base_snapshot)) {
push @$send, '-base', $base_snapshot;
}
my $cstream;
if (defined($ratelimit_bps)) {
$cstream = [ '/usr/bin/cstream', '-t', $ratelimit_bps ];
$logfunc->("using a bandwidth limit of $ratelimit_bps bps for transferring '$volid'") if $logfunc;
}
volume_snapshot($cfg, $volid, $snapshot) if $migration_snapshot;
if (defined($snapshot)) {
activate_volumes($cfg, [$volid], $snapshot);
} else {
activate_volumes($cfg, [$volid]);
}
return $cstream ? [ $send, $cstream ] : [ $send ];
};
sub storage_migrate {
my ($cfg, $volid, $target_sshinfo, $target_storeid, $opts, $logfunc) = @_;
my $insecure = $opts->{insecure};
my ($storeid, $volname) = parse_volume_id($volid);
my $scfg = storage_config($cfg, $storeid);
@ -688,19 +742,12 @@ sub storage_migrate {
my $ssh_base = PVE::SSHInfo::ssh_info_to_command_base($target_sshinfo);
local $ENV{RSYNC_RSH} = PVE::Tools::cmd2string($ssh_base);
my @cstream;
if (defined($ratelimit_bps)) {
@cstream = ([ '/usr/bin/cstream', '-t', $ratelimit_bps ]);
$logfunc->("using a bandwidth limit of $ratelimit_bps bps for transferring '$volid'") if $logfunc;
if (!defined($opts->{snapshot})) {
$opts->{migration_snapshot} = storage_migrate_snapshot($cfg, $storeid, $opts->{with_snapshots});
$opts->{snapshot} = '__migration__' if $opts->{migration_snapshot};
}
my $migration_snapshot;
if (!defined($snapshot)) {
$migration_snapshot = storage_migrate_snapshot($cfg, $storeid, $opts->{with_snapshots});
$snapshot = '__migration__' if $migration_snapshot;
}
my @formats = volume_transfer_formats($cfg, $volid, $target_volid, $snapshot, $base_snapshot, $with_snapshots);
my @formats = volume_transfer_formats($cfg, $volid, $target_volid, $opts->{snapshot}, $opts->{base_snapshot}, $opts->{with_snapshots});
die "cannot migrate from storage type '$scfg->{type}' to '$tcfg->{type}'\n" if !@formats;
my $format = $formats[0];
@ -715,22 +762,7 @@ sub storage_migrate {
my $match_api_version = sub { $target_apiver = $1 if $_[0] =~ m!^APIVER (\d+)$!; };
eval { run_command($get_api_version, logfunc => $match_api_version); };
my $send = ['pvesm', 'export', $volid, $format, '-', '-with-snapshots', $with_snapshots];
my $recv = [@$ssh, '--', 'pvesm', 'import', $target_volid, $format, $import_fn, '-with-snapshots', $with_snapshots];
if (defined($snapshot)) {
push @$send, '-snapshot', $snapshot;
push @$recv, '-snapshot', $snapshot;
}
if ($migration_snapshot) {
push @$recv, '-delete-snapshot', $snapshot;
}
push @$recv, '-allow-rename', $allow_rename if $target_apiver >= 5;
if (defined($base_snapshot)) {
# Check if the snapshot exists on the remote side:
push @$send, '-base', $base_snapshot;
push @$recv, '-base', $base_snapshot if $target_apiver >= 9;
}
my $recv = [ @$ssh, '--', $volume_import_prepare->($target_volid, $format, $import_fn, $target_apiver, $opts)->@* ];
my $new_volid;
my $pattern = volume_imported_message(undef, 1);
@ -745,19 +777,13 @@ sub storage_migrate {
}
};
volume_snapshot($cfg, $volid, $snapshot) if $migration_snapshot;
if (defined($snapshot)) {
activate_volumes($cfg, [$volid], $snapshot);
} else {
activate_volumes($cfg, [$volid]);
}
my $cmds = $volume_export_prepare->($cfg, $volid, $format, $logfunc, $opts);
eval {
if ($insecure) {
my $input = IO::File->new();
my $info = IO::File->new();
open3($input, $info, $info, @{$recv})
open3($input, $info, $info, @$recv)
or die "receive command failed: $!\n";
close($input);
@ -774,7 +800,7 @@ sub storage_migrate {
# we won't be reading from the socket
shutdown($socket, 0);
eval { run_command([$send, @cstream], output => '>&'.fileno($socket), errfunc => $logfunc); };
eval { run_command($cmds, output => '>&'.fileno($socket), errfunc => $logfunc); };
my $send_error = $@;
# don't close the connection entirely otherwise the receiving end
@ -795,7 +821,8 @@ sub storage_migrate {
die $send_error if $send_error;
} else {
run_command([$send, @cstream, $recv], logfunc => $match_volid_and_log);
push @$cmds, $recv;
run_command($cmds, logfunc => $match_volid_and_log);
}
die "unable to get ID of the migrated volume\n"
@ -803,8 +830,8 @@ sub storage_migrate {
};
my $err = $@;
warn "send/receive failed, cleaning up snapshot(s)..\n" if $err;
if ($migration_snapshot) {
eval { volume_snapshot_delete($cfg, $volid, $snapshot, 0) };
if ($opts->{migration_snapshot}) {
eval { volume_snapshot_delete($cfg, $volid, $opts->{snapshot}, 0) };
warn "could not remove source snapshot: $@\n" if $@;
}
die $err if $err;