for re-use with remote migration, where import and export happen on
different clusters connected via a websocket instead of SSH tunnel.
no semantic changes intended.
Signed-off-by: Fabian Grünbichler <f.gruenbich...@proxmox.com>
---
new in v3
using $opts across the board in storage_migrate to prevent future bugs
where options get out of sync between helper calls..
PVE/Storage.pm | 113 ++++++++++++++++++++++++++++++-------------------
1 file changed, 70 insertions(+), 43 deletions(-)
diff --git a/PVE/Storage.pm b/PVE/Storage.pm
index 4f3a44a..976bd63 100755
--- a/PVE/Storage.pm
+++ b/PVE/Storage.pm
@@ -651,16 +651,70 @@ sub storage_migrate_snapshot {
return $scfg->{type} eq 'zfspool' || $scfg->{type} eq 'btrfs';
}
-sub storage_migrate {
- my ($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 [ $send, @cstream ];
+};
+
+sub storage_migrate {
+ my ($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,
$target_storeid);
+ $opts->{snapshot} = '__migration__' if $opts->{migration_snapshot};
}
- my $migration_snapshot;
- if (!defined($snapshot)) {
- $migration_snapshot = storage_migrate_snapshot->($cfg, $target_storeid);
- $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;
--
2.30.2
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