[pve-devel] [PATCH v3 storage] fix #5191: api, cli: implement moving a volume between storages

* [pve-devel] [PATCH v3 storage] fix #5191: api, cli: implement moving a volume between storages
@ 2024-07-03 12:59 Filip Schauer
  2024-09-05 12:12 ` Fiona Ebner
  0 siblings, 1 reply; 3+ messages in thread
From: Filip Schauer @ 2024-07-03 12:59 UTC (permalink / raw)
  To: pve-devel

Add the ability to move a backup, ISO, container template or snippet
between storages and nodes via an API method. Moving a VMA backup to a
Proxmox Backup Server requires the proxmox-vma-to-pbs package to be
installed. Currently only VMA backups can be moved to a Proxmox Backup
Server and moving backups from a Proxmox Backup Server is not yet
supported.

The method can be called from the PVE shell with `pvesm move-volume`:

```
pvesm move-volume <source volume> <target storage> [--target-node <node>] [--delete]
```

For example to move a VMA backup to a Proxmox Backup Server:

```
pvesm move-volume \
    local:backup/vzdump-qemu-100-2024_06_25-13_08_56.vma.zst pbs
```

Or move a container template to another node and delete the source:

```
pvesm move-volume \
    local:vztmpl/devuan-4.0-standard_4.0_amd64.tar.gz local \
    --target-node pvenode2 --delete
```

Or use curl to call the API method:

```
curl https://$APINODE:8006/api2/json/nodes/$SOURCENODE/storage/$SOURCESTORAGE/content/$SOURCEVOLUME \
    --insecure --cookie "$(<cookie)" -H "$(<csrftoken)" -X POST \
    --data-raw "target-storage=$TARGETSTORAGE&target-node=$TARGETNODE"
```

Signed-off-by: Filip Schauer <f.schauer@proxmox.com>
---
This patch depends on
[PATCH backup-qemu/vma-to-pbs 0/2] add support for notes and logs
https://lists.proxmox.com/pipermail/pbs-devel/2024-May/009445.html

As of the time of writing this the version of proxmox-vma-to-pbs
specified in debian/control does not exist.

Changes since v2:
* Specify permissions for move method
* Add success message to move method
* Limit the move method to non-vdisk volumes
* Check that source and target are not the same in the move method
* Remove the unnecessary movevolume method from pvesm and make the
  move-volume command call the move API method directly
* Fail when trying to move a protected volume with the delete option
  enabled, instead of ignoring the protection
* Change "not yet supported" to "not supported" in messages indicating
  unimplemented features
* Process auxiliary files first when moving a volume locally on a node
* Move a volume instead of copying it when trying to move a volume
  locally on a node with the delete option enabled.
* Use the more general `path` function instead of `filesystem_path` to
  get the path of a volume
* Loosen the required privileges to move an ISO or a container template,
  or when the delete option is not set.
* Move the volume_move sub from PVE::Storage to
  PVE::API2::Storage::Content since it is only used there.
* Explicitly check that storages are path-based in volume_move,
  except when moving a vma to a Proxmox Backup Server

Changes since v1:
* Rename pvesm command to move-volume
* Add a delete option to control whether the source volume should be
  kept
* Move the API method to the POST endpoint of
  /nodes/{node}/storage/{storage}/content/{volume}, replacing the
  experimental copy method that has not been used since its introduction
  in October 2011 883eeea6.
* Implement migrating volumes between nodes

 debian/control                  |   1 +
 src/PVE/API2/Storage/Content.pm | 245 +++++++++++++++++++++++++++-----
 src/PVE/CLI/pvesm.pm            |   2 +
 src/PVE/Storage.pm              |  74 ++++++----
 src/PVE/Storage/Plugin.pm       | 106 ++++++++++----
 5 files changed, 342 insertions(+), 86 deletions(-)

diff --git a/debian/control b/debian/control
index d7afa98..d45b1f6 100644
--- a/debian/control
+++ b/debian/control
@@ -42,6 +42,7 @@ Depends: ceph-common (>= 12.2~),
          nfs-common,
          proxmox-backup-client (>= 2.1.10~),
          proxmox-backup-file-restore,
+         proxmox-vma-to-pbs (>= 0.0.2),
          pve-cluster (>= 5.0-32),
          smartmontools,
          smbclient,
diff --git a/src/PVE/API2/Storage/Content.pm b/src/PVE/API2/Storage/Content.pm
index fe0ad4a..7d789d8 100644
--- a/src/PVE/API2/Storage/Content.pm
+++ b/src/PVE/API2/Storage/Content.pm
@@ -2,7 +2,9 @@ package PVE::API2::Storage::Content;
 
 use strict;
 use warnings;
-use Data::Dumper;
+
+use File::Basename;
+use File::Copy qw(copy move);
 
 use PVE::SafeSyslog;
 use PVE::Cluster;
@@ -483,15 +485,173 @@ __PACKAGE__->register_method ({
 	return $upid;
     }});
 
+sub volume_move {
+    my ($cfg, $source_volid, $target_storeid, $delete) = @_;
+
+    my ($source_storeid, $source_volname) = PVE::Storage::parse_volume_id($source_volid, 0);
+
+    die "source and target storage cannot be the same\n" if ($source_storeid eq $target_storeid);
+
+    PVE::Storage::activate_storage($cfg, $source_storeid);
+    my $source_scfg = PVE::Storage::storage_config($cfg, $source_storeid);
+    my $source_plugin = PVE::Storage::Plugin->lookup($source_scfg->{type});
+    my ($vtype) = $source_plugin->parse_volname($source_volname);
+
+    die "source storage '$source_storeid' does not support volumes of type '$vtype'\n"
+	if !$source_scfg->{content}->{$vtype};
+
+    PVE::Storage::activate_storage($cfg, $target_storeid);
+    my $target_scfg = PVE::Storage::storage_config($cfg, $target_storeid);
+    die "target storage '$target_storeid' does not support volumes of type '$vtype'\n"
+	if !$target_scfg->{content}->{$vtype};
+
+    if ($vtype eq 'backup' || $vtype eq 'iso' || $vtype eq 'vztmpl' || $vtype eq 'snippets') {
+	my $target_plugin = PVE::Storage::Plugin->lookup($target_scfg->{type});
+
+	if ($vtype eq 'backup') {
+	    die "moving a backup from a Proxmox Backup Server is not supported\n"
+		if $source_scfg->{type} eq 'pbs';
+
+	    my $protected = $source_plugin->get_volume_attribute(
+		$source_scfg, $source_storeid, $source_volname, 'protected');
+
+	    die "cannot delete protected backup\n"
+		if ($delete && $protected);
+	}
+
+	die "expected storage '$source_storeid' to be path based\n" if !$source_scfg->{path};
+	my $source_path = $source_plugin->path($source_scfg, $source_volname, $source_storeid);
+	die "$source_path does not exist" if (!-e $source_path);
+	my $source_dirname = dirname($source_path);
+
+	if ($vtype eq 'backup' && $target_scfg->{type} eq 'pbs') {
+	    my $info = PVE::Storage::archive_info($source_path);
+	    die "moving non-VMA backups to a Proxmox Backup Server is not supported\n"
+		if ($info->{format} ne 'vma');
+
+	    my $repo = PVE::PBSClient::get_repository($target_scfg);
+	    my $vmid = ($source_plugin->parse_volname($source_volname))[2];
+	    my $fingerprint = $target_scfg->{fingerprint};
+	    my $password = PVE::Storage::PBSPlugin::pbs_password_file_name(
+		$target_scfg, $target_storeid);
+	    my $namespace = $target_scfg->{namespace};
+	    my $keyfile = PVE::Storage::PBSPlugin::pbs_encryption_key_file_name(
+		$target_scfg, $target_storeid);
+	    my $master_keyfile = PVE::Storage::PBSPlugin::pbs_master_pubkey_file_name(
+		$target_scfg, $target_storeid);
+
+	    my $comp = $info->{compression};
+	    my $backup_time = $info->{ctime};
+	    my $log_file_path = "$source_dirname/$info->{logfilename}";
+	    my $notes_file_path = "$source_dirname/$info->{notesfilename}";
+
+	    my $vma_to_pbs_cmd = [
+		"vma-to-pbs",
+		"--repository", $repo,
+		"--vmid", $vmid,
+		"--fingerprint", $fingerprint,
+		"--password-file", $password,
+		"--backup-time", $backup_time,
+		"--compress",
+	    ];
+
+	    push @$vma_to_pbs_cmd, "--ns", $namespace if $namespace;
+	    push @$vma_to_pbs_cmd, "--log-file", $log_file_path if -e $log_file_path;
+	    push @$vma_to_pbs_cmd, "--notes-file", $notes_file_path if -e $notes_file_path;
+	    push @$vma_to_pbs_cmd, "--encrypt", "--keyfile", $keyfile if -e $keyfile;
+	    push @$vma_to_pbs_cmd, "--master-keyfile", $master_keyfile if -e $master_keyfile;
+
+	    if ($comp) {
+		PVE::Storage::decompress_archive_into_pipe($source_path, $vma_to_pbs_cmd);
+	    } else {
+		push @$vma_to_pbs_cmd, $source_path;
+		run_command($vma_to_pbs_cmd);
+	    }
+
+	    my $protected = $source_plugin->get_volume_attribute(
+		$source_scfg, $source_storeid, $source_volname, 'protected');
+
+	    if ($protected) {
+		my $target_volid = PVE::Storage::PBSPlugin::print_volid(
+		    $target_storeid, 'vm', $vmid, $backup_time);
+		my (undef, $target_volname) = PVE::Storage::parse_volume_id($target_volid, 0);
+		$target_plugin->update_volume_attribute(
+		    $target_scfg, $target_storeid, $target_volname, 'protected', 1);
+	    }
+	} else {
+	    die "expected storage '$target_storeid' to be path based\n" if !$target_scfg->{path};
+	    my $target_path = $target_plugin->path($target_scfg, $source_volname, $target_storeid);
+
+	    die "$target_path already exists" if (-e $target_path);
+
+	    my @created_files = ();
+
+	    eval {
+		if ($vtype eq 'backup') {
+		    my $target_dirname = dirname($target_path);
+		    my $info = PVE::Storage::archive_info($source_path);
+
+		    for my $type (qw(log notes)) {
+			my $filename = $info->{"${type}filename"} or next;
+			my $auxiliary_source_path = "$source_dirname/$filename";
+			my $auxiliary_target_path = "$target_dirname/$filename";
+			if (-e $auxiliary_source_path) {
+			    copy($auxiliary_source_path, $auxiliary_target_path)
+				or die "copying backup $type file failed: $!";
+			    push(@created_files, $auxiliary_target_path);
+			}
+		    }
+
+		    my $protected = $source_plugin->get_volume_attribute(
+			$source_scfg, $source_storeid, $source_volname, 'protected');
+
+		    if ($protected) {
+			my $protection_target_path = PVE::Storage::protection_file_path(
+                            $target_path);
+			$target_plugin->update_volume_attribute(
+			    $target_scfg, $target_storeid, $source_volname, 'protected', 1);
+			push(@created_files, $protection_target_path);
+		    }
+		}
+
+		if ($delete) {
+		    move($source_path, $target_path) or die "failed to move $vtype: $!";
+		} else {
+		    copy($source_path, $target_path) or die "failed to copy $vtype: $!";
+		}
+	    };
+	    if (my $err = $@) {
+		for my $created_file (@created_files) {
+		    eval { unlink($created_file) };
+		    warn $@ if $@;
+		}
+		die $err;
+	    }
+	}
+
+        PVE::Storage::archive_remove($source_path) if $delete;
+    } elsif ($vtype eq 'images') {
+	die "use pct move-volume or qm disk move\n";
+    } elsif ($vtype eq 'rootdir') {
+	die "cannot move OpenVZ rootdir\n";
+    }
+
+    return;
+}
+
 __PACKAGE__->register_method ({
-    name => 'copy',
+    name => 'move',
     path => '{volume}',
     method => 'POST',
-    description => "Copy a volume. This is experimental code - do not use.",
+    description => "Move a volume.",
+    permissions => {
+	description => "You need the 'Datastore.Allocate' privilege on the storages.",
+	user => 'all',
+    },
     protected => 1,
     proxyto => 'node',
     parameters => {
-    	additionalProperties => 0,
+	additionalProperties => 0,
 	properties => {
 	    node => get_standard_option('pve-node'),
 	    storage => get_standard_option('pve-storage-id', { optional => 1}),
@@ -499,14 +659,21 @@ __PACKAGE__->register_method ({
 		description => "Source volume identifier",
 		type => 'string',
 	    },
-	    target => {
-		description => "Target volume identifier",
+	    'target-storage' => {
+		description => "Target storage",
 		type => 'string',
 	    },
-	    target_node => get_standard_option('pve-node',  {
+	    'target-node' => get_standard_option('pve-node',  {
 		description => "Target node. Default is local node.",
 		optional => 1,
 	    }),
+	    delete => {
+		type => 'boolean',
+		description => "Delete the original volume after a successful copy. " .
+		    "By default the original is kept.",
+		optional => 1,
+		default => 0,
+	    },
 	},
     },
     returns => {
@@ -515,43 +682,51 @@ __PACKAGE__->register_method ({
     code => sub {
 	my ($param) = @_;
 
-	my $rpcenv = PVE::RPCEnvironment::get();
-
-	my $user = $rpcenv->get_user();
-
-	my $target_node = $param->{target_node} || PVE::INotify::nodename();
-	# pvesh examples
-	# cd /nodes/localhost/storage/local/content
-	# pve:/> create local:103/vm-103-disk-1.raw -target local:103/vm-103-disk-2.raw
-	# pve:/> create 103/vm-103-disk-1.raw -target 103/vm-103-disk-3.raw
-
 	my $src_volid = &$real_volume_id($param->{storage}, $param->{volume});
-	my $dst_volid = &$real_volume_id($param->{storage}, $param->{target});
+	my $dst_storeid = $param->{'target-storage'};
+	my ($src_storeid, $volname) = PVE::Storage::parse_volume_id($src_volid);
+	my $src_node = PVE::INotify::nodename();
+	my $dst_node = $param->{'target-node'} || $src_node;
+	my $delete = $param->{delete};
 
-	print "DEBUG: COPY $src_volid TO $dst_volid\n";
+	die "source and target cannot be the same\n"
+	    if ($src_node eq $dst_node && $src_storeid eq $dst_storeid);
 
 	my $cfg = PVE::Storage::config();
+	my $rpcenv = PVE::RPCEnvironment::get();
+	my $user = $rpcenv->get_user();
 
-	# do all parameter checks first
-
-	# then do all short running task (to raise errors before we go to background)
-
-	# then start the worker task
-	my $worker = sub  {
-	    my $upid = shift;
-
-	    print "DEBUG: starting worker $upid\n";
+	if ($delete) {
+	    $rpcenv->check($user, "/storage/$src_storeid", ["Datastore.Allocate"]);
+	} else {
+	    $rpcenv->check($user, "/storage/$src_storeid", ["Datastore.Audit"]);
+	}
 
-	    my ($target_sid, $target_volname) = PVE::Storage::parse_volume_id($dst_volid);
-	    #my $target_ip = PVE::Cluster::remote_node_ip($target_node);
+	my ($vtype) = PVE::Storage::parse_volname($cfg, $src_volid);
+	die "use pct move-volume or qm disk move" if $vtype eq 'images';
 
-	    # you need to get this working (fails currently, because storage_migrate() uses
-	    # ssh to connect to local host (which is not needed
-	    my $sshinfo = PVE::SSHInfo::get_ssh_info($target_node);
-	    PVE::Storage::storage_migrate($cfg, $src_volid, $sshinfo, $target_sid, {'target_volname' => $target_volname});
+	if ($vtype eq 'iso' || $vtype eq 'vztmpl') {
+	    $rpcenv->check($user, "/storage/$dst_storeid", ["Datastore.AllocateTemplate"]);
+	} else {
+	    $rpcenv->check($user, "/storage/$dst_storeid", ["Datastore.Allocate"]);
+	}
 
-	    print "DEBUG: end worker $upid\n";
+	my $worker = sub  {
+	    if ($src_node eq $dst_node) {
+		volume_move($cfg, $src_volid, $dst_storeid, $delete);
+	    } else {
+		PVE::Storage::storage_check_enabled($cfg, $dst_storeid, $dst_node);
+		my $sshinfo = PVE::SSHInfo::get_ssh_info($dst_node);
+		PVE::Storage::storage_migrate(
+		    $cfg, $src_volid, $sshinfo, $dst_storeid, {'target_volname' => $volname});
+		if ($delete) {
+		    my $src_path = PVE::Storage::abs_filesystem_path($cfg, $src_volid);
+		    PVE::Storage::archive_remove($src_path, 1);
+		}
+	    }
 
+	    print "Moved volume '$src_volid' on node '$src_node'"
+		." to '$dst_storeid' on node '$dst_node'\n";
 	};
 
 	return $rpcenv->fork_worker('imgcopy', undef, $user, $worker);
diff --git a/src/PVE/CLI/pvesm.pm b/src/PVE/CLI/pvesm.pm
index 9b9676b..8031fc1 100755
--- a/src/PVE/CLI/pvesm.pm
+++ b/src/PVE/CLI/pvesm.pm
@@ -690,6 +690,8 @@ our $cmddef = {
 	print "APIVER $res->{apiver}\n";
 	print "APIAGE $res->{apiage}\n";
     }],
+    'move-volume' => [ "PVE::API2::Storage::Content", 'move', ['volume', 'target-storage'],
+		{ node => $nodename } ],
     'prune-backups' => [ __PACKAGE__, 'prunebackups', ['storage'], { node => $nodename }, sub {
 	my $res = shift;
 
diff --git a/src/PVE/Storage.pm b/src/PVE/Storage.pm
index 739fd6d..18319ef 100755
--- a/src/PVE/Storage.pm
+++ b/src/PVE/Storage.pm
@@ -48,7 +48,15 @@ use constant APIVER => 10;
 # see https://www.gnu.org/software/libtool/manual/html_node/Libtool-versioning.html
 use constant APIAGE => 1;
 
-our $KNOWN_EXPORT_FORMATS = ['raw+size', 'tar+size', 'qcow2+size', 'vmdk+size', 'zfs', 'btrfs'];
+our $KNOWN_EXPORT_FORMATS = [
+    'raw+size',
+    'tar+size',
+    'qcow2+size',
+    'vmdk+size',
+    'zfs',
+    'btrfs',
+    'backup+size'
+];
 
 # load standard plugins
 PVE::Storage::DirPlugin->register();
@@ -1680,6 +1688,45 @@ sub extract_vzdump_config_tar {
     return wantarray ? ($raw, $file) : $raw;
 }
 
+sub decompress_archive_into_pipe {
+    my ($archive, $cmd, $outfunc) = @_;
+
+    my $info = archive_info($archive);
+    die "archive is not compressed\n" if !$info->{compression};
+    my $decompressor = $info->{decompressor};
+    my $full_cmd = [ [@$decompressor, $archive], $cmd ];
+
+    # lzop/zcat exits with 1 when the pipe is closed early,
+    # detect this and ignore the exit code later
+    my $broken_pipe;
+    my $errstring;
+    my $err = sub {
+	my $output = shift;
+	if (
+	    $output =~ m/lzop: Broken pipe: <stdout>/
+	    || $output =~ m/gzip: stdout: Broken pipe/
+	    || $output =~ m/zstd: error 70 : Write error.*Broken pipe/
+	) {
+	    $broken_pipe = 1;
+	} elsif (!defined ($errstring) && $output !~ m/^\s*$/) {
+	    $errstring = "failed to decompress archive: $output\n";
+	}
+    };
+
+    my $rc = eval { run_command($full_cmd, outfunc => $outfunc, errfunc => $err, noerr => 1) };
+    my $rerr = $@;
+
+    $broken_pipe ||= $rc == 141; # broken pipe from cmd POV
+
+    if (!$errstring && !$broken_pipe && $rc != 0) {
+	die "$rerr\n" if $rerr;
+	die "archive decompression failed with exit code $rc\n";
+    }
+    die "$errstring\n" if $errstring;
+
+    return;
+}
+
 sub extract_vzdump_config_vma {
     my ($archive, $comp) = @_;
 
@@ -1691,30 +1738,7 @@ sub extract_vzdump_config_vma {
     my $decompressor = $info->{decompressor};
 
     if ($comp) {
-	my $cmd = [ [@$decompressor, $archive], ["vma", "config", "-"] ];
-
-	# lzop/zcat exits with 1 when the pipe is closed early by vma, detect this and ignore the exit code later
-	my $broken_pipe;
-	my $errstring;
-	my $err = sub {
-	    my $output = shift;
-	    if ($output =~ m/lzop: Broken pipe: <stdout>/ || $output =~ m/gzip: stdout: Broken pipe/ || $output =~ m/zstd: error 70 : Write error.*Broken pipe/) {
-		$broken_pipe = 1;
-	    } elsif (!defined ($errstring) && $output !~ m/^\s*$/) {
-		$errstring = "Failed to extract config from VMA archive: $output\n";
-	    }
-	};
-
-	my $rc = eval { run_command($cmd, outfunc => $out, errfunc => $err, noerr => 1) };
-	my $rerr = $@;
-
-	$broken_pipe ||= $rc == 141; # broken pipe from vma POV
-
-	if (!$errstring && !$broken_pipe && $rc != 0) {
-	    die "$rerr\n" if $rerr;
-	    die "config extraction failed with exit code $rc\n";
-	}
-	die "$errstring\n" if $errstring;
+	decompress_archive_into_pipe($archive, ["vma", "config", "-"], $out);
     } else {
 	run_command(["vma", "config", $archive], outfunc => $out);
     }
diff --git a/src/PVE/Storage/Plugin.pm b/src/PVE/Storage/Plugin.pm
index 6444390..7308f33 100644
--- a/src/PVE/Storage/Plugin.pm
+++ b/src/PVE/Storage/Plugin.pm
@@ -1575,6 +1575,8 @@ sub prune_backups {
 #     unprivileged container. In other words, this is from the root user
 #     namespace's point of view with no uid-mapping in effect.
 #     As produced via `tar -C vm-100-disk-1.subvol -cpf TheOutputFile.dat .`
+#   backup+size: (backups only)
+#     A raw binary data stream prefixed with a protection flag and notes.
 
 # Plugins may reuse these helpers. Changes to the header format should be
 # reflected by changes to the function prototypes.
@@ -1623,6 +1625,16 @@ sub volume_export {
 	    run_command(['tar', @COMMON_TAR_FLAGS, '-cf', '-', '-C', $file, '.'],
 	                output => '>&'.fileno($fh));
 	    return;
+	} elsif ($format eq 'backup+size') {
+	    write_common_header($fh, $size);
+	    my $protected = $class->get_volume_attribute(
+		$scfg, $storeid, $volname, 'protected') ? 1 : 0;
+	    my $notes = $class->get_volume_attribute($scfg, $storeid, $volname, 'notes') // "";
+	    syswrite($fh, pack("C", $protected), 1);
+	    syswrite($fh, pack("Q<", length($notes)), 8);
+	    syswrite($fh, $notes, length($notes));
+	    run_command(['dd', "if=$file", "bs=4k", "status=progress"], output => '>&'.fileno($fh));
+	    return;
 	}
     }
     die $err_msg;
@@ -1635,6 +1647,10 @@ sub volume_export_formats {
 	    or return;
 	my ($size, $format) = file_size_info($file);
 
+	my ($vtype) = $class->parse_volname($volname);
+
+	return ('backup+size') if $vtype eq 'backup';
+
 	if ($with_snapshots) {
 	    return ($format.'+size') if ($format eq 'qcow2' || $format eq 'vmdk');
 	    return ();
@@ -1650,7 +1666,7 @@ sub volume_import {
     my ($class, $scfg, $storeid, $fh, $volname, $format, $snapshot, $base_snapshot, $with_snapshots, $allow_rename) = @_;
 
     die "volume import format '$format' not available for $class\n"
-	if $format !~ /^(raw|tar|qcow2|vmdk)\+size$/;
+	if $format !~ /^(raw|tar|qcow2|vmdk|backup)\+size$/;
     my $data_format = $1;
 
     die "format $format cannot be imported without snapshots\n"
@@ -1661,16 +1677,21 @@ sub volume_import {
     my ($vtype, $name, $vmid, $basename, $basevmid, $isBase, $file_format) =
 	$class->parse_volname($volname);
 
+    die "cannot import OpenVZ rootdir\n" if $vtype eq 'rootdir';
+
     # XXX: Should we bother with conversion routines at this level? This won't
     # happen without manual CLI usage, so for now we just error out...
-    die "cannot import format $format into a file of format $file_format\n"
-	if $data_format ne $file_format && !($data_format eq 'tar' && $file_format eq 'subvol');
+    if ($vtype eq 'images' && $data_format ne $file_format &&
+	!($data_format eq 'tar' && $file_format eq 'subvol')
+    ) {
+	die "cannot import format $format into a file of format $file_format\n";
+    }
 
     # Check for an existing file first since interrupting alloc_image doesn't
     # free it.
     my $file = $class->path($scfg, $volname, $storeid);
     if (-e $file) {
-	die "file '$file' already exists\n" if !$allow_rename;
+	die "file '$file' already exists\n" if !$allow_rename || $vtype ne 'images';
 	warn "file '$file' already exists - importing with a different name\n";
 	$name = undef;
     }
@@ -1678,29 +1699,58 @@ sub volume_import {
     my ($size) = read_common_header($fh);
     $size = int($size/1024);
 
-    eval {
-	my $allocname = $class->alloc_image($storeid, $scfg, $vmid, $file_format, $name, $size);
-	my $oldname = $volname;
-	$volname = $allocname;
-	if (defined($name) && $allocname ne $oldname) {
-	    die "internal error: unexpected allocated name: '$allocname' != '$oldname'\n";
+    if ($vtype eq 'images') {
+	eval {
+	    my $allocname = $class->alloc_image($storeid, $scfg, $vmid, $file_format, $name, $size);
+	    my $oldname = $volname;
+	    $volname = $allocname;
+	    if (defined($name) && $allocname ne $oldname) {
+		die "internal error: unexpected allocated name: '$allocname' != '$oldname'\n";
+	    }
+	    my $file = $class->path($scfg, $volname, $storeid)
+		or die "internal error: failed to get path to newly allocated volume $volname\n";
+	    if ($data_format eq 'raw' || $data_format eq 'qcow2' || $data_format eq 'vmdk') {
+		run_command(['dd', "of=$file", 'conv=sparse', 'bs=64k'],
+		    input => '<&'.fileno($fh));
+	    } elsif ($data_format eq 'tar') {
+		run_command(['tar', @COMMON_TAR_FLAGS, '-C', $file, '-xf', '-'],
+		    input => '<&'.fileno($fh));
+	    } else {
+		die "volume import format '$format' not available for $class";
+	    }
+	};
+	if (my $err = $@) {
+	    eval { $class->free_image($storeid, $scfg, $volname, 0, $file_format) };
+	    warn $@ if $@;
+	    die $err;
 	}
-	my $file = $class->path($scfg, $volname, $storeid)
-	    or die "internal error: failed to get path to newly allocated volume $volname\n";
-	if ($data_format eq 'raw' || $data_format eq 'qcow2' || $data_format eq 'vmdk') {
-	    run_command(['dd', "of=$file", 'conv=sparse', 'bs=64k'],
-	                input => '<&'.fileno($fh));
-	} elsif ($data_format eq 'tar') {
-	    run_command(['tar', @COMMON_TAR_FLAGS, '-C', $file, '-xf', '-'],
-	                input => '<&'.fileno($fh));
-	} else {
-	    die "volume import format '$format' not available for $class";
+    } elsif ($vtype eq 'iso' || $vtype eq 'snippets' || $vtype eq 'vztmpl' || $vtype eq 'backup') {
+	my $protected;
+	my $notes;
+
+	if ($vtype eq 'backup') {
+	    sysread($fh, $protected, 1);
+	    $protected = unpack('C', $protected);
+	    sysread($fh, my $notes_len, 8);
+	    $notes_len = unpack('Q<', $notes_len);
+	    sysread($fh, $notes, $notes_len);
+	}
+
+	eval {
+	    run_command(['dd', "of=$file", 'bs=64k'], input => '<&'.fileno($fh));
+	};
+	if (my $err = $@) {
+	    if (-e $file) {
+		eval { unlink($file) };
+		warn $@ if $@;
+	    }
+	    die $err;
+	}
+
+	if ($vtype eq 'backup') {
+	    $class->update_volume_attribute($scfg, $storeid, $volname, 'protected', $protected);
+	    $class->update_volume_attribute($scfg, $storeid, $volname, 'notes', $notes);
 	}
-    };
-    if (my $err = $@) {
-	eval { $class->free_image($storeid, $scfg, $volname, 0, $file_format) };
-	warn $@ if $@;
-	die $err;
     }
 
     return "$storeid:$volname";
@@ -1709,7 +1759,11 @@ sub volume_import {
 sub volume_import_formats {
     my ($class, $scfg, $storeid, $volname, $snapshot, $base_snapshot, $with_snapshots) = @_;
     if ($scfg->{path} && !defined($base_snapshot)) {
-	my $format = ($class->parse_volname($volname))[6];
+	my ($vtype, $format) = ($class->parse_volname($volname))[0, 6];
+
+	return ('backup+size') if $vtype eq 'backup';
+	return ('raw+size') if !defined($format);
+
 	if ($with_snapshots) {
 	    return ($format.'+size') if ($format eq 'qcow2' || $format eq 'vmdk');
 	    return ();
-- 
2.39.2



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