X-Git-Url: https://git.proxmox.com/?p=pve-storage.git;a=blobdiff_plain;f=PVE%2FStorage.pm;h=71d6ad78db1255286c64d48549f10894011b9094;hp=7b285da39241f60e3a0a84bfef57e3a010c7cdcb;hb=HEAD;hpb=dc3655a1a5b4ba60dd8b6d7ce487406b644e648d

diff --git a/PVE/Storage.pm b/PVE/Storage.pm
deleted file mode 100755
index 7b285da..0000000
--- a/PVE/Storage.pm
+++ /dev/null
@@ -1,1626 +0,0 @@
-package PVE::Storage;
-
-use strict;
-use warnings;
-use Data::Dumper;
-
-use POSIX;
-use IO::Select;
-use IO::File;
-use IO::Socket::IP;
-use File::Basename;
-use File::Path;
-use Cwd 'abs_path';
-use Socket;
-
-use PVE::Tools qw(run_command file_read_firstline dir_glob_foreach $IPV6RE);
-use PVE::Cluster qw(cfs_read_file cfs_write_file cfs_lock_file);
-use PVE::DataCenterConfig;
-use PVE::Exception qw(raise_param_exc);
-use PVE::JSONSchema;
-use PVE::INotify;
-use PVE::RPCEnvironment;
-use PVE::SSHInfo;
-
-use PVE::Storage::Plugin;
-use PVE::Storage::DirPlugin;
-use PVE::Storage::LVMPlugin;
-use PVE::Storage::LvmThinPlugin;
-use PVE::Storage::NFSPlugin;
-use PVE::Storage::CIFSPlugin;
-use PVE::Storage::ISCSIPlugin;
-use PVE::Storage::RBDPlugin;
-use PVE::Storage::CephFSPlugin;
-use PVE::Storage::ISCSIDirectPlugin;
-use PVE::Storage::GlusterfsPlugin;
-use PVE::Storage::ZFSPoolPlugin;
-use PVE::Storage::ZFSPlugin;
-use PVE::Storage::DRBDPlugin;
-use PVE::Storage::PBSPlugin;
-
-# Storage API version. Icrement it on changes in storage API interface.
-use constant APIVER => 4;
-# Age is the number of versions we're backward compatible with.
-# This is like having 'current=APIVER' and age='APIAGE' in libtool,
-# see https://www.gnu.org/software/libtool/manual/html_node/Libtool-versioning.html
-use constant APIAGE => 3;
-
-# load standard plugins
-PVE::Storage::DirPlugin->register();
-PVE::Storage::LVMPlugin->register();
-PVE::Storage::LvmThinPlugin->register();
-PVE::Storage::NFSPlugin->register();
-PVE::Storage::CIFSPlugin->register();
-PVE::Storage::ISCSIPlugin->register();
-PVE::Storage::RBDPlugin->register();
-PVE::Storage::CephFSPlugin->register();
-PVE::Storage::ISCSIDirectPlugin->register();
-PVE::Storage::GlusterfsPlugin->register();
-PVE::Storage::ZFSPoolPlugin->register();
-PVE::Storage::ZFSPlugin->register();
-PVE::Storage::DRBDPlugin->register();
-PVE::Storage::PBSPlugin->register();
-
-# load third-party plugins
-if ( -d '/usr/share/perl5/PVE/Storage/Custom' ) {
-    dir_glob_foreach('/usr/share/perl5/PVE/Storage/Custom', '.*\.pm$', sub {
-	my ($file) = @_;
-	my $modname = 'PVE::Storage::Custom::' . $file;
-	$modname =~ s!\.pm$!!;
-	$file = 'PVE/Storage/Custom/' . $file;
-
-	eval {
-	    require $file;
-
-	    # Check perl interface:
-	    die "not derived from PVE::Storage::Plugin\n"
-		if !$modname->isa('PVE::Storage::Plugin');
-	    die "does not provide an api() method\n"
-		if !$modname->can('api');
-	    # Check storage API version and that file is really storage plugin.
-	    my $version = $modname->api();
-	    die "implements an API version newer than current ($version > " . APIVER . ")\n"
-		if $version > APIVER;
-	    my $min_version = (APIVER - APIAGE);
-	    die "API version too old, please update the plugin ($version < $min_version)\n"
-		if $version < $min_version;
-	    import $file;
-	    $modname->register();
-
-	    # If we got this far and the API version is not the same, make some
-	    # noise:
-	    warn "Plugin \"$modname\" is implementing an older storage API, an upgrade is recommended\n"
-		if $version != APIVER;
-	};
-	if ($@) {
-	    warn "Error loading storage plugin \"$modname\": $@";
-	}
-    });
-}
-
-# initialize all plugins
-PVE::Storage::Plugin->init();
-
-my $UDEVADM = '/sbin/udevadm';
-
-our $iso_extension_re = qr/\.(?:iso|img)/i;
-
-#  PVE::Storage utility functions
-
-sub config {
-    return cfs_read_file("storage.cfg");
-}
-
-sub write_config {
-    my ($cfg) = @_;
-
-    cfs_write_file('storage.cfg', $cfg);
-}
-
-sub lock_storage_config {
-    my ($code, $errmsg) = @_;
-
-    cfs_lock_file("storage.cfg", undef, $code);
-    my $err = $@;
-    if ($err) {
-	$errmsg ? die "$errmsg: $err" : die $err;
-    }
-}
-
-sub storage_config {
-    my ($cfg, $storeid, $noerr) = @_;
-
-    die "no storage ID specified\n" if !$storeid;
-
-    my $scfg = $cfg->{ids}->{$storeid};
-
-    die "storage '$storeid' does not exist\n" if (!$noerr && !$scfg);
-
-    return $scfg;
-}
-
-sub storage_check_node {
-    my ($cfg, $storeid, $node, $noerr) = @_;
-
-    my $scfg = storage_config($cfg, $storeid);
-
-    if ($scfg->{nodes}) {
-	$node = PVE::INotify::nodename() if !$node || ($node eq 'localhost');
-	if (!$scfg->{nodes}->{$node}) {
-	    die "storage '$storeid' is not available on node '$node'\n" if !$noerr;
-	    return undef;
-	}
-    }
-
-    return $scfg;
-}
-
-sub storage_check_enabled {
-    my ($cfg, $storeid, $node, $noerr) = @_;
-
-    my $scfg = storage_config($cfg, $storeid);
-
-    if ($scfg->{disable}) {
-	die "storage '$storeid' is disabled\n" if !$noerr;
-	return undef;
-    }
-
-    return storage_check_node($cfg, $storeid, $node, $noerr);
-}
-
-# storage_can_replicate:
-# return true if storage supports replication
-# (volumes alocated with vdisk_alloc() has replication feature)
-sub storage_can_replicate {
-    my ($cfg, $storeid, $format) = @_;
-
-    my $scfg = storage_config($cfg, $storeid);
-    my $plugin = PVE::Storage::Plugin->lookup($scfg->{type});
-    return $plugin->storage_can_replicate($scfg, $storeid, $format);
-}
-
-sub storage_ids {
-    my ($cfg) = @_;
-
-    return keys %{$cfg->{ids}};
-}
-
-sub file_size_info {
-    my ($filename, $timeout) = @_;
-
-    return PVE::Storage::Plugin::file_size_info($filename, $timeout);
-}
-
-sub volume_size_info {
-    my ($cfg, $volid, $timeout) = @_;
-
-    my ($storeid, $volname) = parse_volume_id($volid, 1);
-    if ($storeid) {
-	my $scfg = storage_config($cfg, $storeid);
-	my $plugin = PVE::Storage::Plugin->lookup($scfg->{type});
-	return $plugin->volume_size_info($scfg, $storeid, $volname, $timeout);
-    } elsif ($volid =~ m|^(/.+)$| && -e $volid) {
-	return file_size_info($volid, $timeout);
-    } else {
-	return 0;
-    }
-}
-
-sub volume_resize {
-    my ($cfg, $volid, $size, $running) = @_;
-
-    my $padding = (1024 - $size % 1024) % 1024;
-    $size = $size + $padding;
-
-    my ($storeid, $volname) = parse_volume_id($volid, 1);
-    if ($storeid) {
-        my $scfg = storage_config($cfg, $storeid);
-        my $plugin = PVE::Storage::Plugin->lookup($scfg->{type});
-        return $plugin->volume_resize($scfg, $storeid, $volname, $size, $running);
-    } elsif ($volid =~ m|^(/.+)$| && -e $volid) {
-        die "resize file/device '$volid' is not possible\n";
-    } else {
-	die "unable to parse volume ID '$volid'\n";
-    }
-}
-
-sub volume_rollback_is_possible {
-    my ($cfg, $volid, $snap) = @_;
-
-    my ($storeid, $volname) = parse_volume_id($volid, 1);
-    if ($storeid) {
-        my $scfg = storage_config($cfg, $storeid);
-        my $plugin = PVE::Storage::Plugin->lookup($scfg->{type});
-        return $plugin->volume_rollback_is_possible($scfg, $storeid, $volname, $snap);
-    } elsif ($volid =~ m|^(/.+)$| && -e $volid) {
-        die "snapshot rollback file/device '$volid' is not possible\n";
-    } else {
-	die "unable to parse volume ID '$volid'\n";
-    }
-}
-
-sub volume_snapshot {
-    my ($cfg, $volid, $snap) = @_;
-
-    my ($storeid, $volname) = parse_volume_id($volid, 1);
-    if ($storeid) {
-        my $scfg = storage_config($cfg, $storeid);
-        my $plugin = PVE::Storage::Plugin->lookup($scfg->{type});
-        return $plugin->volume_snapshot($scfg, $storeid, $volname, $snap);
-    } elsif ($volid =~ m|^(/.+)$| && -e $volid) {
-        die "snapshot file/device '$volid' is not possible\n";
-    } else {
-	die "unable to parse volume ID '$volid'\n";
-    }
-}
-
-sub volume_snapshot_rollback {
-    my ($cfg, $volid, $snap) = @_;
-
-    my ($storeid, $volname) = parse_volume_id($volid, 1);
-    if ($storeid) {
-        my $scfg = storage_config($cfg, $storeid);
-        my $plugin = PVE::Storage::Plugin->lookup($scfg->{type});
-	$plugin->volume_rollback_is_possible($scfg, $storeid, $volname, $snap);
-        return $plugin->volume_snapshot_rollback($scfg, $storeid, $volname, $snap);
-    } elsif ($volid =~ m|^(/.+)$| && -e $volid) {
-        die "snapshot rollback file/device '$volid' is not possible\n";
-    } else {
-	die "unable to parse volume ID '$volid'\n";
-    }
-}
-
-sub volume_snapshot_delete {
-    my ($cfg, $volid, $snap, $running) = @_;
-
-    my ($storeid, $volname) = parse_volume_id($volid, 1);
-    if ($storeid) {
-        my $scfg = storage_config($cfg, $storeid);
-        my $plugin = PVE::Storage::Plugin->lookup($scfg->{type});
-        return $plugin->volume_snapshot_delete($scfg, $storeid, $volname, $snap, $running);
-    } elsif ($volid =~ m|^(/.+)$| && -e $volid) {
-        die "snapshot delete file/device '$volid' is not possible\n";
-    } else {
-	die "unable to parse volume ID '$volid'\n";
-    }
-}
-
-sub volume_has_feature {
-    my ($cfg, $feature, $volid, $snap, $running, $opts) = @_;
-
-    my ($storeid, $volname) = parse_volume_id($volid, 1);
-    if ($storeid) {
-        my $scfg = storage_config($cfg, $storeid);
-        my $plugin = PVE::Storage::Plugin->lookup($scfg->{type});
-        return $plugin->volume_has_feature($scfg, $feature, $storeid, $volname, $snap, $running, $opts);
-    } elsif ($volid =~ m|^(/.+)$| && -e $volid) {
-	return undef;
-    } else {
-	return undef;
-    }
-}
-
-sub volume_snapshot_list {
-    my ($cfg, $volid) = @_;
-
-    my ($storeid, $volname) = parse_volume_id($volid, 1);
-    if ($storeid) {
-	my $scfg = storage_config($cfg, $storeid);
-	my $plugin = PVE::Storage::Plugin->lookup($scfg->{type});
-	return $plugin->volume_snapshot_list($scfg, $storeid, $volname);
-    } elsif ($volid =~ m|^(/.+)$| && -e $volid) {
-	die "send file/device '$volid' is not possible\n";
-    } else {
-	die "unable to parse volume ID '$volid'\n";
-    }
-    # return an empty array if dataset does not exist.
-}
-
-sub get_image_dir {
-    my ($cfg, $storeid, $vmid) = @_;
-
-    my $scfg = storage_config($cfg, $storeid);
-    my $plugin = PVE::Storage::Plugin->lookup($scfg->{type});
-
-    my $path = $plugin->get_subdir($scfg, 'images');
-
-    return $vmid ? "$path/$vmid" : $path;
-}
-
-sub get_private_dir {
-    my ($cfg, $storeid, $vmid) = @_;
-
-    my $scfg = storage_config($cfg, $storeid);
-    my $plugin = PVE::Storage::Plugin->lookup($scfg->{type});
-
-    my $path = $plugin->get_subdir($scfg, 'rootdir');
-
-    return $vmid ? "$path/$vmid" : $path;
-}
-
-sub get_iso_dir {
-    my ($cfg, $storeid) = @_;
-
-    my $scfg = storage_config($cfg, $storeid);
-    my $plugin = PVE::Storage::Plugin->lookup($scfg->{type});
-
-    return $plugin->get_subdir($scfg, 'iso');
-}
-
-sub get_vztmpl_dir {
-    my ($cfg, $storeid) = @_;
-
-    my $scfg = storage_config($cfg, $storeid);
-    my $plugin = PVE::Storage::Plugin->lookup($scfg->{type});
-
-    return $plugin->get_subdir($scfg, 'vztmpl');
-}
-
-sub get_backup_dir {
-    my ($cfg, $storeid) = @_;
-
-    my $scfg = storage_config($cfg, $storeid);
-    my $plugin = PVE::Storage::Plugin->lookup($scfg->{type});
-
-    return $plugin->get_subdir($scfg, 'backup');
-}
-
-# library implementation
-
-sub parse_vmid {
-    my $vmid = shift;
-
-    die "VMID '$vmid' contains illegal characters\n" if $vmid !~ m/^\d+$/;
-
-    return int($vmid);
-}
-
-# NOTE: basename and basevmid are always undef for LVM-thin, where the
-# clone -> base reference is not encoded in the volume ID.
-# see note in PVE::Storage::LvmThinPlugin for details.
-sub parse_volname {
-    my ($cfg, $volid) = @_;
-
-    my ($storeid, $volname) = parse_volume_id($volid);
-
-    my $scfg = storage_config($cfg, $storeid);
-
-    my $plugin = PVE::Storage::Plugin->lookup($scfg->{type});
-
-    # returns ($vtype, $name, $vmid, $basename, $basevmid, $isBase, $format)
-
-    return $plugin->parse_volname($volname);
-}
-
-sub parse_volume_id {
-    my ($volid, $noerr) = @_;
-
-    return PVE::Storage::Plugin::parse_volume_id($volid, $noerr);
-}
-
-# test if we have read access to volid
-sub check_volume_access {
-    my ($rpcenv, $user, $cfg, $vmid, $volid) = @_;
-
-    my ($sid, $volname) = parse_volume_id($volid, 1);
-    if ($sid) {
-	my ($vtype, undef, $ownervm) = parse_volname($cfg, $volid);
-	if ($vtype eq 'iso' || $vtype eq 'vztmpl') {
-	    # require at least read access to storage, (custom) templates/ISOs could be sensitive
-	    $rpcenv->check_any($user, "/storage/$sid", ['Datastore.AllocateSpace', 'Datastore.Audit']);
-	} elsif (defined($ownervm) && defined($vmid) && ($ownervm == $vmid)) {
-	    # we are owner - allow access
-	} elsif ($vtype eq 'backup' && $ownervm) {
-	    $rpcenv->check($user, "/storage/$sid", ['Datastore.AllocateSpace']);
-	    $rpcenv->check($user, "/vms/$ownervm", ['VM.Backup']);
-	} else {
-	    # allow if we are Datastore administrator
-	    $rpcenv->check($user, "/storage/$sid", ['Datastore.Allocate']);
-	}
-    } else {
-	die "Only root can pass arbitrary filesystem paths."
-	    if $user ne 'root@pam';
-    }
-
-    return undef;
-}
-
-my $volume_is_base_and_used__no_lock = sub {
-    my ($scfg, $storeid, $plugin, $volname) = @_;
-
-    my ($vtype, $name, $vmid, undef, undef, $isBase, undef) =
-	$plugin->parse_volname($volname);
-
-    if ($isBase) {
-	my $vollist = $plugin->list_images($storeid, $scfg);
-	foreach my $info (@$vollist) {
-	    my (undef, $tmpvolname) = parse_volume_id($info->{volid});
-	    my $basename = undef;
-	    my $basevmid = undef;
-
-	    eval{
-		(undef, undef, undef, $basename, $basevmid) =
-		    $plugin->parse_volname($tmpvolname);
-	    };
-
-	    if ($basename && defined($basevmid) && $basevmid == $vmid && $basename eq $name) {
-		return 1;
-	    }
-	}
-    }
-    return 0;
-};
-
-# NOTE: this check does not work for LVM-thin, where the clone -> base
-# reference is not encoded in the volume ID.
-# see note in PVE::Storage::LvmThinPlugin for details.
-sub volume_is_base_and_used {
-    my ($cfg, $volid) = @_;
-
-    my ($storeid, $volname) = parse_volume_id($volid);
-    my $scfg = storage_config($cfg, $storeid);
-    my $plugin = PVE::Storage::Plugin->lookup($scfg->{type});
-
-    $plugin->cluster_lock_storage($storeid, $scfg->{shared}, undef, sub {
-	return &$volume_is_base_and_used__no_lock($scfg, $storeid, $plugin, $volname);
-    });
-}
-
-# try to map a filesystem path to a volume identifier
-sub path_to_volume_id {
-    my ($cfg, $path) = @_;
-
-    my $ids = $cfg->{ids};
-
-    my ($sid, $volname) = parse_volume_id($path, 1);
-    if ($sid) {
-	if (my $scfg = $ids->{$sid}) {
-	    if ($scfg->{path}) {
-		my $plugin = PVE::Storage::Plugin->lookup($scfg->{type});
-		my ($vtype, $name, $vmid) = $plugin->parse_volname($volname);
-		return ($vtype, $path);
-	    }
-	}
-	return ('');
-    }
-
-    # Note: abs_path() return undef if $path doesn not exist
-    # for example when nfs storage is not mounted
-    $path = abs_path($path) || $path;
-
-    foreach my $sid (keys %$ids) {
-	my $scfg = $ids->{$sid};
-	next if !$scfg->{path};
-	my $plugin = PVE::Storage::Plugin->lookup($scfg->{type});
-	my $imagedir = $plugin->get_subdir($scfg, 'images');
-	my $isodir = $plugin->get_subdir($scfg, 'iso');
-	my $tmpldir = $plugin->get_subdir($scfg, 'vztmpl');
-	my $backupdir = $plugin->get_subdir($scfg, 'backup');
-	my $privatedir = $plugin->get_subdir($scfg, 'rootdir');
-
-	if ($path =~ m!^$imagedir/(\d+)/([^/\s]+)$!) {
-	    my $vmid = $1;
-	    my $name = $2;
-
-	    my $vollist = $plugin->list_images($sid, $scfg, $vmid);
-	    foreach my $info (@$vollist) {
-		my ($storeid, $volname) = parse_volume_id($info->{volid});
-		my $volpath = $plugin->path($scfg, $volname, $storeid);
-		if ($volpath eq $path) {
-		    return ('images', $info->{volid});
-		}
-	    }
-	} elsif ($path =~ m!^$isodir/([^/]+$iso_extension_re)$!) {
-	    my $name = $1;
-	    return ('iso', "$sid:iso/$name");
-	} elsif ($path =~ m!^$tmpldir/([^/]+\.tar\.gz)$!) {
-	    my $name = $1;
-	    return ('vztmpl', "$sid:vztmpl/$name");
-	} elsif ($path =~ m!^$privatedir/(\d+)$!) {
-	    my $vmid = $1;
-	    return ('rootdir', "$sid:rootdir/$vmid");
-	} elsif ($path =~ m!^$backupdir/([^/]+\.(tar|tar\.gz|tar\.lzo|tgz|vma|vma\.gz|vma\.lzo))$!) {
-	    my $name = $1;
-	    return ('iso', "$sid:backup/$name");
-	}
-    }
-
-    # can't map path to volume id
-    return ('');
-}
-
-sub path {
-    my ($cfg, $volid, $snapname) = @_;
-
-    my ($storeid, $volname) = parse_volume_id($volid);
-
-    my $scfg = storage_config($cfg, $storeid);
-
-    my $plugin = PVE::Storage::Plugin->lookup($scfg->{type});
-    my ($path, $owner, $vtype) = $plugin->path($scfg, $volname, $storeid, $snapname);
-    return wantarray ? ($path, $owner, $vtype) : $path;
-}
-
-sub abs_filesystem_path {
-    my ($cfg, $volid) = @_;
-
-    my $path;
-    if (parse_volume_id ($volid, 1)) {
-	activate_volumes($cfg, [ $volid ]);
-	$path = PVE::Storage::path($cfg, $volid);
-    } else {
-	if (-f $volid) {
-	    my $abspath = abs_path($volid);
-	    if ($abspath && $abspath =~ m|^(/.+)$|) {
-		$path = $1; # untaint any path
-	    }
-	}
-    }
-
-    die "can't find file '$volid'\n" if !($path && -f $path);
-
-    return $path;
-}
-
-sub storage_migrate {
-    my ($cfg, $volid, $target_sshinfo, $target_storeid, $opts, $logfunc) = @_;
-
-    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 $allow_rename = $opts->{allow_rename} ? 1 : 0;
-
-    my ($storeid, $volname) = parse_volume_id($volid);
-    my $target_volname = $opts->{target_volname} || $volname;
-
-    my $scfg = storage_config($cfg, $storeid);
-
-    # no need to migrate shared content
-    return if $storeid eq $target_storeid && $scfg->{shared};
-
-    my $tcfg = storage_config($cfg, $target_storeid);
-
-    my $vtype = (parse_volname($cfg, $volid))[0];
-
-    die "content type '$vtype' is not available on storage '$target_storeid'\n"
-	if !$tcfg->{content}->{$vtype};
-
-    my $target_volid = "${target_storeid}:${target_volname}";
-
-    my $target_ip = $target_sshinfo->{ip};
-
-    my $ssh = PVE::SSHInfo::ssh_info_to_command($target_sshinfo);
-    my $ssh_base = PVE::SSHInfo::ssh_info_to_command_base($target_sshinfo);
-    local $ENV{RSYNC_RSH} = PVE::Tools::cmd2string($ssh_base);
-
-    my @cstream = ([ '/usr/bin/cstream', '-t', $ratelimit_bps ])
-	if defined($ratelimit_bps);
-
-    my $migration_snapshot;
-    if (!defined($snapshot)) {
-	if ($scfg->{type} eq 'zfspool') {
-	    $migration_snapshot = 1;
-	    $snapshot = '__migration__';
-	}
-    }
-
-    my @formats = volume_transfer_formats($cfg, $volid, $target_volid, $snapshot, $base_snapshot, $with_snapshots);
-    die "cannot migrate from storage type '$scfg->{type}' to '$tcfg->{type}'\n" if !@formats;
-    my $format = $formats[0];
-
-    my $import_fn = '-'; # let pvesm import read from stdin per default
-    if ($insecure) {
-	my $net = $target_sshinfo->{network} // $target_sshinfo->{ip};
-	$import_fn = "tcp://$net";
-    }
-
-    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', $snapshot
-    }
-    if ($migration_snapshot) {
-	push @$recv, '-delete-snapshot', $snapshot;
-    }
-
-    if (defined($base_snapshot)) {
-	# Check if the snapshot exists on the remote side:
-	push @$send, '-base', $base_snapshot;
-	push @$recv, '-base', $base_snapshot;
-    }
-
-    volume_snapshot($cfg, $volid, $snapshot) if $migration_snapshot;
-    eval {
-	if ($insecure) {
-	    open(my $info, '-|', @$recv)
-		or die "receive command failed: $!\n";
-	    my ($ip) = <$info> =~ /^($PVE::Tools::IPRE)$/ or die "no tunnel IP received\n";
-	    my ($port) = <$info> =~ /^(\d+)$/ or die "no tunnel port received\n";
-	    my $socket = IO::Socket::IP->new(PeerHost => $ip, PeerPort => $port, Type => SOCK_STREAM)
-		or die "failed to connect to tunnel at $ip:$port\n";
-	    # we won't be reading from the socket
-	    shutdown($socket, 0);
-	    run_command([$send, @cstream], output => '>&'.fileno($socket), errfunc => $logfunc);
-	    # don't close the connection entirely otherwise the receiving end
-	    # might not get all buffered data (and fails with 'connection reset by peer')
-	    shutdown($socket, 1);
-
-	    # wait for the remote process to finish
-	    if ($logfunc) {
-		while (my $line = <$info>) {
-		    chomp($line);
-		    $logfunc->("[$target_sshinfo->{name}] $line");
-		}
-	    } else {
-		1 while <$info>;
-	    }
-
-	    # now close the socket
-	    close($socket);
-	    if (!close($info)) { # does waitpid()
-		die "import failed: $!\n" if $!;
-		die "import failed: exit code ".($?>>8)."\n";
-	    }
-	} else {
-	    run_command([$send, @cstream, $recv], logfunc => $logfunc);
-	}
-    };
-    my $err = $@;
-    warn "send/receive failed, cleaning up snapshot(s)..\n" if $err;
-    if ($migration_snapshot) {
-	eval { volume_snapshot_delete($cfg, $volid, $snapshot, 0) };
-	warn "could not remove source snapshot: $@\n" if $@;
-    }
-    die $err if $err;
-}
-
-sub vdisk_clone {
-    my ($cfg, $volid, $vmid, $snap) = @_;
-
-    my ($storeid, $volname) = parse_volume_id($volid);
-
-    my $scfg = storage_config($cfg, $storeid);
-
-    my $plugin = PVE::Storage::Plugin->lookup($scfg->{type});
-
-    activate_storage($cfg, $storeid);
-
-    # lock shared storage
-    return $plugin->cluster_lock_storage($storeid, $scfg->{shared}, undef, sub {
-	my $volname = $plugin->clone_image($scfg, $storeid, $volname, $vmid, $snap);
-	return "$storeid:$volname";
-    });
-}
-
-sub vdisk_create_base {
-    my ($cfg, $volid) = @_;
-
-    my ($storeid, $volname) = parse_volume_id($volid);
-
-    my $scfg = storage_config($cfg, $storeid);
-
-    my $plugin = PVE::Storage::Plugin->lookup($scfg->{type});
-
-    activate_storage($cfg, $storeid);
-
-    # lock shared storage
-    return $plugin->cluster_lock_storage($storeid, $scfg->{shared}, undef, sub {
-	my $volname = $plugin->create_base($storeid, $scfg, $volname);
-	return "$storeid:$volname";
-    });
-}
-
-sub map_volume {
-    my ($cfg, $volid, $snapname) = @_;
-
-    my ($storeid, $volname) = parse_volume_id($volid);
-
-    my $scfg = storage_config($cfg, $storeid);
-
-    my $plugin = PVE::Storage::Plugin->lookup($scfg->{type});
-
-    return $plugin->map_volume($storeid, $scfg, $volname, $snapname);
-}
-
-sub unmap_volume {
-    my ($cfg, $volid, $snapname) = @_;
-
-    my ($storeid, $volname) = parse_volume_id($volid);
-
-    my $scfg = storage_config($cfg, $storeid);
-
-    my $plugin = PVE::Storage::Plugin->lookup($scfg->{type});
-
-    return $plugin->unmap_volume($storeid, $scfg, $volname, $snapname);
-}
-
-sub vdisk_alloc {
-    my ($cfg, $storeid, $vmid, $fmt, $name, $size) = @_;
-
-    die "no storage ID specified\n" if !$storeid;
-
-    PVE::JSONSchema::parse_storage_id($storeid);
-
-    my $scfg = storage_config($cfg, $storeid);
-
-    die "no VMID specified\n" if !$vmid;
-
-    $vmid = parse_vmid($vmid);
-
-    my $defformat = PVE::Storage::Plugin::default_format($scfg);
-
-    $fmt = $defformat if !$fmt;
-
-    activate_storage($cfg, $storeid);
-
-    my $plugin = PVE::Storage::Plugin->lookup($scfg->{type});
-
-    # lock shared storage
-    return $plugin->cluster_lock_storage($storeid, $scfg->{shared}, undef, sub {
-	my $old_umask = umask(umask|0037);
-	my $volname = eval { $plugin->alloc_image($storeid, $scfg, $vmid, $fmt, $name, $size) };
-	my $err = $@;
-	umask $old_umask;
-	die $err if $err;
-	return "$storeid:$volname";
-    });
-}
-
-sub vdisk_free {
-    my ($cfg, $volid) = @_;
-
-    my ($storeid, $volname) = parse_volume_id($volid);
-    my $scfg = storage_config($cfg, $storeid);
-    my $plugin = PVE::Storage::Plugin->lookup($scfg->{type});
-
-    activate_storage($cfg, $storeid);
-
-    my $cleanup_worker;
-
-    # lock shared storage
-    $plugin->cluster_lock_storage($storeid, $scfg->{shared}, undef, sub {
-	# LVM-thin allows deletion of still referenced base volumes!
-	die "base volume '$volname' is still in use by linked clones\n"
-	    if &$volume_is_base_and_used__no_lock($scfg, $storeid, $plugin, $volname);
-
-	my (undef, undef, undef, undef, undef, $isBase, $format) =
-	    $plugin->parse_volname($volname);
-	$cleanup_worker = $plugin->free_image($storeid, $scfg, $volname, $isBase, $format);
-    });
-
-    return if !$cleanup_worker;
-
-    my $rpcenv = PVE::RPCEnvironment::get();
-    my $authuser = $rpcenv->get_user();
-
-    $rpcenv->fork_worker('imgdel', undef, $authuser, $cleanup_worker);
-}
-
-sub vdisk_list {
-    my ($cfg, $storeid, $vmid, $vollist) = @_;
-
-    my $ids = $cfg->{ids};
-
-    storage_check_enabled($cfg, $storeid) if ($storeid);
-
-    my $res = {};
-
-    # prepare/activate/refresh all storages
-
-    my $storage_list = [];
-    if ($vollist) {
-	foreach my $volid (@$vollist) {
-	    my ($sid, undef) = parse_volume_id($volid);
-	    next if !defined($ids->{$sid});
-	    next if !storage_check_enabled($cfg, $sid, undef, 1);
-	    push @$storage_list, $sid;
-	}
-    } else {
-	foreach my $sid (keys %$ids) {
-	    next if $storeid && $storeid ne $sid;
-	    next if !storage_check_enabled($cfg, $sid, undef, 1);
-	    push @$storage_list, $sid;
-	}
-    }
-
-    my $cache = {};
-
-    activate_storage_list($cfg, $storage_list, $cache);
-
-    foreach my $sid (keys %$ids) {
-	next if $storeid && $storeid ne $sid;
-	next if !storage_check_enabled($cfg, $sid, undef, 1);
-
-	my $scfg = $ids->{$sid};
-	my $plugin = PVE::Storage::Plugin->lookup($scfg->{type});
-	$res->{$sid} = $plugin->list_images($sid, $scfg, $vmid, $vollist, $cache);
-	@{$res->{$sid}} = sort {lc($a->{volid}) cmp lc ($b->{volid}) } @{$res->{$sid}} if $res->{$sid};
-    }
-
-    return $res;
-}
-
-sub template_list {
-    my ($cfg, $storeid, $tt) = @_;
-
-    die "unknown template type '$tt'\n"
-	if !($tt eq 'iso' || $tt eq 'vztmpl' || $tt eq 'backup' || $tt eq 'snippets');
-
-    my $ids = $cfg->{ids};
-
-    storage_check_enabled($cfg, $storeid) if ($storeid);
-
-    my $res = {};
-
-    # query the storage
-    foreach my $sid (keys %$ids) {
-	next if $storeid && $storeid ne $sid;
-
-	my $scfg = $ids->{$sid};
-	my $type = $scfg->{type};
-
-	next if !$scfg->{content}->{$tt};
-
-	next if !storage_check_enabled($cfg, $sid, undef, 1);
-
-	$res->{$sid} = volume_list($cfg, $sid, undef, $tt);
-    }
-
-    return $res;
-}
-
-sub volume_list {
-    my ($cfg, $storeid, $vmid, $content) = @_;
-
-    my @ctypes = qw(rootdir images vztmpl iso backup snippets);
-
-    my $cts = $content ? [ $content ] : [ @ctypes ];
-
-    my $scfg = PVE::Storage::storage_config($cfg, $storeid);
-
-    $cts = [ grep { defined($scfg->{content}->{$_}) } @$cts ];
-
-    my $plugin = PVE::Storage::Plugin->lookup($scfg->{type});
-
-    activate_storage($cfg, $storeid);
-
-    my $res = $plugin->list_volumes($storeid, $scfg, $vmid, $cts);
-
-    @$res = sort {lc($a->{volid}) cmp lc ($b->{volid}) } @$res;
-
-    return $res;
-}
-
-sub uevent_seqnum {
-
-    my $filename = "/sys/kernel/uevent_seqnum";
-
-    my $seqnum = 0;
-    if (my $fh = IO::File->new($filename, "r")) {
-	my $line = <$fh>;
-	if ($line =~ m/^(\d+)$/) {
-	    $seqnum = int($1);
-	}
-	close ($fh);
-    }
-    return $seqnum;
-}
-
-sub activate_storage {
-    my ($cfg, $storeid, $cache) = @_;
-
-    $cache = {} if !$cache;
-
-    my $scfg = storage_check_enabled($cfg, $storeid);
-
-    return if $cache->{activated}->{$storeid};
-
-    $cache->{uevent_seqnum} = uevent_seqnum() if !$cache->{uevent_seqnum};
-
-    my $plugin = PVE::Storage::Plugin->lookup($scfg->{type});
-
-    if ($scfg->{base}) {
-	my ($baseid, undef) = parse_volume_id ($scfg->{base});
-	activate_storage($cfg, $baseid, $cache);
-    }
-
-    if (!$plugin->check_connection($storeid, $scfg)) {
-	die "storage '$storeid' is not online\n";
-    }
-
-    $plugin->activate_storage($storeid, $scfg, $cache);
-
-    my $newseq = uevent_seqnum ();
-
-    # only call udevsettle if there are events
-    if ($newseq > $cache->{uevent_seqnum}) {
-	my $timeout = 30;
-	system ("$UDEVADM settle --timeout=$timeout"); # ignore errors
-	$cache->{uevent_seqnum} = $newseq;
-    }
-
-    $cache->{activated}->{$storeid} = 1;
-}
-
-sub activate_storage_list {
-    my ($cfg, $storeid_list, $cache) = @_;
-
-    $cache = {} if !$cache;
-
-    foreach my $storeid (@$storeid_list) {
-	activate_storage($cfg, $storeid, $cache);
-    }
-}
-
-sub deactivate_storage {
-    my ($cfg, $storeid) = @_;
-
-    my $scfg = storage_config ($cfg, $storeid);
-    my $plugin = PVE::Storage::Plugin->lookup($scfg->{type});
-
-    my $cache = {};
-    $plugin->deactivate_storage($storeid, $scfg, $cache);
-}
-
-sub activate_volumes {
-    my ($cfg, $vollist, $snapname) = @_;
-
-    return if !($vollist && scalar(@$vollist));
-
-    my $storagehash = {};
-    foreach my $volid (@$vollist) {
-	my ($storeid, undef) = parse_volume_id($volid);
-	$storagehash->{$storeid} = 1;
-    }
-
-    my $cache = {};
-
-    activate_storage_list($cfg, [keys %$storagehash], $cache);
-
-    foreach my $volid (@$vollist) {
-	my ($storeid, $volname) = parse_volume_id($volid);
-	my $scfg = storage_config($cfg, $storeid);
-	my $plugin = PVE::Storage::Plugin->lookup($scfg->{type});
-	$plugin->activate_volume($storeid, $scfg, $volname, $snapname, $cache);
-    }
-}
-
-sub deactivate_volumes {
-    my ($cfg, $vollist, $snapname) = @_;
-
-    return if !($vollist && scalar(@$vollist));
-
-    my $cache = {};
-
-    my @errlist = ();
-    foreach my $volid (@$vollist) {
-	my ($storeid, $volname) = parse_volume_id($volid);
-
-	my $scfg = storage_config($cfg, $storeid);
-	my $plugin = PVE::Storage::Plugin->lookup($scfg->{type});
-
-	eval {
-	    $plugin->deactivate_volume($storeid, $scfg, $volname, $snapname, $cache);
-	};
-	if (my $err = $@) {
-	    warn $err;
-	    push @errlist, $volid;
-	}
-    }
-
-    die "volume deactivation failed: " . join(' ', @errlist)
-	if scalar(@errlist);
-}
-
-sub storage_info {
-    my ($cfg, $content, $includeformat) = @_;
-
-    my $ids = $cfg->{ids};
-
-    my $info = {};
-
-    my @ctypes = PVE::Tools::split_list($content);
-
-    my $slist = [];
-    foreach my $storeid (keys %$ids) {
-	my $storage_enabled = defined(storage_check_enabled($cfg, $storeid, undef, 1));
-
-	if (defined($content)) {
-	    my $want_ctype = 0;
-	    foreach my $ctype (@ctypes) {
-		if ($ids->{$storeid}->{content}->{$ctype}) {
-		    $want_ctype = 1;
-		    last;
-		}
-	    }
-	    next if !$want_ctype || !$storage_enabled;
-	}
-
-	my $type = $ids->{$storeid}->{type};
-
-	$info->{$storeid} = {
-	    type => $type,
-	    total => 0,
-	    avail => 0,
-	    used => 0,
-	    shared => $ids->{$storeid}->{shared} ? 1 : 0,
-	    content => PVE::Storage::Plugin::content_hash_to_string($ids->{$storeid}->{content}),
-	    active => 0,
-	    enabled => $storage_enabled ? 1 : 0,
-	};
-
-	push @$slist, $storeid;
-    }
-
-    my $cache = {};
-
-    foreach my $storeid (keys %$ids) {
-	my $scfg = $ids->{$storeid};
-
-	next if !$info->{$storeid};
-	next if !$info->{$storeid}->{enabled};
-
-	my $plugin = PVE::Storage::Plugin->lookup($scfg->{type});
-	if ($includeformat) {
-	    my $pd = $plugin->plugindata();
-	    $info->{$storeid}->{format} = $pd->{format}
-		if $pd->{format};
-	    $info->{$storeid}->{select_existing} = $pd->{select_existing}
-		if $pd->{select_existing};
-	}
-
-	eval { activate_storage($cfg, $storeid, $cache); };
-	if (my $err = $@) {
-	    warn $err;
-	    next;
-	}
-
-	my ($total, $avail, $used, $active) = eval { $plugin->status($storeid, $scfg, $cache); };
-	warn $@ if $@;
-	next if !$active;
-	$info->{$storeid}->{total} = int($total);
-	$info->{$storeid}->{avail} = int($avail);
-	$info->{$storeid}->{used} = int($used);
-	$info->{$storeid}->{active} = $active;
-    }
-
-    return $info;
-}
-
-sub resolv_server {
-    my ($server) = @_;
-
-    my ($packed_ip, $family);
-    eval {
-	my @res = PVE::Tools::getaddrinfo_all($server);
-	$family = $res[0]->{family};
-	$packed_ip = (PVE::Tools::unpack_sockaddr_in46($res[0]->{addr}))[2];
-    };
-    if (defined $packed_ip) {
-	return Socket::inet_ntop($family, $packed_ip);
-    }
-    return undef;
-}
-
-sub scan_nfs {
-    my ($server_in) = @_;
-
-    my $server;
-    if (!($server = resolv_server ($server_in))) {
-	die "unable to resolve address for server '${server_in}'\n";
-    }
-
-    my $cmd = ['/sbin/showmount',  '--no-headers', '--exports', $server];
-
-    my $res = {};
-    run_command($cmd, outfunc => sub {
-	my $line = shift;
-
-	# note: howto handle white spaces in export path??
-	if ($line =~ m!^(/\S+)\s+(.+)$!) {
-	    $res->{$1} = $2;
-	}
-    });
-
-    return $res;
-}
-
-sub scan_cifs {
-    my ($server_in, $user, $password, $domain) = @_;
-
-    my $server;
-    if (!($server = resolv_server ($server_in))) {
-	die "unable to resolve address for server '${server_in}'\n";
-    }
-
-    # we support only Windows grater than 2012 cifsscan so use smb3
-    my $cmd = ['/usr/bin/smbclient', '-m', 'smb3', '-d', '0', '-L', $server];
-    if (defined($user)) {
-	die "password is required" if !defined($password);
-	push @$cmd, '-U', "$user\%$password";
-	push @$cmd, '-W', $domain if defined($domain);
-    } else {
-	push @$cmd, '-N';
-    }
-
-    my $res = {};
-    run_command($cmd,
-		outfunc => sub {
-		    my $line = shift;
-		    if ($line =~ m/(\S+)\s*Disk\s*(\S*)/) {
-			$res->{$1} = $2;
-		    } elsif ($line =~ m/(NT_STATUS_(\S*))/) {
-			$res->{$1} = '';
-		    }
-		},
-		errfunc => sub {},
-		noerr => 1
-    );
-
-    return $res;
-}
-
-sub scan_zfs {
-
-    my $cmd = ['zfs',  'list', '-t', 'filesystem', '-H', '-o', 'name,avail,used'];
-
-    my $res = [];
-    run_command($cmd, outfunc => sub {
-	my $line = shift;
-
-	if ($line =~m/^(\S+)\s+(\S+)\s+(\S+)$/) {
-	    my ($pool, $size_str, $used_str) = ($1, $2, $3);
-	    my $size = PVE::Storage::ZFSPoolPlugin::zfs_parse_size($size_str);
-	    my $used = PVE::Storage::ZFSPoolPlugin::zfs_parse_size($used_str);
-	    # ignore subvolumes generated by our ZFSPoolPlugin
-	    return if $pool =~ m!/subvol-\d+-[^/]+$!;
-	    return if $pool =~ m!/basevol-\d+-[^/]+$!;
-	    push @$res, { pool => $pool, size => $size, free => $size-$used };
-	}
-    });
-
-    return $res;
-}
-
-sub resolv_portal {
-    my ($portal, $noerr) = @_;
-
-    my ($server, $port) = PVE::Tools::parse_host_and_port($portal);
-    if ($server) {
-	if (my $ip = resolv_server($server)) {
-	    $server = $ip;
-	    $server = "[$server]" if $server =~ /^$IPV6RE$/;
-	    return $port ? "$server:$port" : $server;
-	}
-    }
-    return undef if $noerr;
-
-    raise_param_exc({ portal => "unable to resolve portal address '$portal'" });
-}
-
-
-sub scan_iscsi {
-    my ($portal_in) = @_;
-
-    my $portal;
-    if (!($portal = resolv_portal($portal_in))) {
-	die "unable to parse/resolve portal address '${portal_in}'\n";
-    }
-
-    return PVE::Storage::ISCSIPlugin::iscsi_discovery($portal);
-}
-
-sub storage_default_format {
-    my ($cfg, $storeid) = @_;
-
-    my $scfg = storage_config ($cfg, $storeid);
-
-    return PVE::Storage::Plugin::default_format($scfg);
-}
-
-sub vgroup_is_used {
-    my ($cfg, $vgname) = @_;
-
-    foreach my $storeid (keys %{$cfg->{ids}}) {
-	my $scfg = storage_config($cfg, $storeid);
-	if ($scfg->{type} eq 'lvm' && $scfg->{vgname} eq $vgname) {
-	    return 1;
-	}
-    }
-
-    return undef;
-}
-
-sub target_is_used {
-    my ($cfg, $target) = @_;
-
-    foreach my $storeid (keys %{$cfg->{ids}}) {
-	my $scfg = storage_config($cfg, $storeid);
-	if ($scfg->{type} eq 'iscsi' && $scfg->{target} eq $target) {
-	    return 1;
-	}
-    }
-
-    return undef;
-}
-
-sub volume_is_used {
-    my ($cfg, $volid) = @_;
-
-    foreach my $storeid (keys %{$cfg->{ids}}) {
-	my $scfg = storage_config($cfg, $storeid);
-	if ($scfg->{base} && $scfg->{base} eq $volid) {
-	    return 1;
-	}
-    }
-
-    return undef;
-}
-
-sub storage_is_used {
-    my ($cfg, $storeid) = @_;
-
-    foreach my $sid (keys %{$cfg->{ids}}) {
-	my $scfg = storage_config($cfg, $sid);
-	next if !$scfg->{base};
-	my ($st) = parse_volume_id($scfg->{base});
-	return 1 if $st && $st eq $storeid;
-    }
-
-    return undef;
-}
-
-sub foreach_volid {
-    my ($list, $func) = @_;
-
-    return if !$list;
-
-    foreach my $sid (keys %$list) {
-       foreach my $info (@{$list->{$sid}}) {
-           my $volid = $info->{volid};
-	   my ($sid1, $volname) = parse_volume_id($volid, 1);
-	   if ($sid1 && $sid1 eq $sid) {
-	       &$func ($volid, $sid, $info);
-	   } else {
-	       warn "detected strange volid '$volid' in volume list for '$sid'\n";
-	   }
-       }
-    }
-}
-
-sub extract_vzdump_config_tar {
-    my ($archive, $conf_re) = @_;
-
-    die "ERROR: file '$archive' does not exist\n" if ! -f $archive;
-
-    my $pid = open(my $fh, '-|', 'tar', 'tf', $archive) ||
-       die "unable to open file '$archive'\n";
-
-    my $file;
-    while (defined($file = <$fh>)) {
-	if ($file =~ $conf_re) {
-	    $file = $1; # untaint
-	    last;
-	}
-    }
-
-    kill 15, $pid;
-    waitpid $pid, 0;
-    close $fh;
-
-    die "ERROR: archive contains no configuration file\n" if !$file;
-    chomp $file;
-
-    my $raw = '';
-    my $out = sub {
-	my $output = shift;
-	$raw .= "$output\n";
-    };
-
-    PVE::Tools::run_command(['tar', '-xpOf', $archive, $file, '--occurrence'], outfunc => $out);
-
-    return wantarray ? ($raw, $file) : $raw;
-}
-
-sub extract_vzdump_config_vma {
-    my ($archive, $comp) = @_;
-
-    my $cmd;
-    my $raw = '';
-    my $out = sub {
-	my $output = shift;
-	$raw .= "$output\n";
-    };
-
-
-    if ($comp) {
-	my $uncomp;
-	if ($comp eq 'gz') {
-	    $uncomp = ["zcat", $archive];
-	} elsif ($comp eq 'lzo') {
-	    $uncomp = ["lzop", "-d", "-c", $archive];
-	} else {
-	    die "unknown compression method '$comp'\n";
-	}
-	$cmd = [$uncomp, ["vma", "config", "-"]];
-
-	# in some cases, lzop/zcat exits with 1 when its stdout 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/) {
-		$broken_pipe = 1;
-	    } elsif (!defined ($errstring) && $output !~ m/^\s*$/) {
-		$errstring = "Failed to extract config from VMA archive: $output\n";
-	    }
-	};
-
-	# in other cases, the pipeline will exit with exit code 141
-	# because of the broken pipe, handle / ignore this as well
-	my $rc;
-	eval {
-	    $rc = PVE::Tools::run_command($cmd, outfunc => $out, errfunc => $err, noerr => 1);
-	};
-	my $rerr = $@;
-
-	# use exit code if no stderr output and not just broken pipe
-	if (!$errstring && !$broken_pipe && $rc != 0 && $rc != 141) {
-	    die "$rerr\n" if $rerr;
-	    die "config extraction failed with exit code $rc\n";
-	}
-	die "$errstring\n" if $errstring;
-    } else {
-	# simple case without compression and weird piping behaviour
-	PVE::Tools::run_command(["vma", "config", $archive], outfunc => $out);
-    }
-
-    return wantarray ? ($raw, undef) : $raw;
-}
-
-sub extract_vzdump_config {
-    my ($cfg, $volid) = @_;
-
-    my ($storeid, $volname) = parse_volume_id($volid);
-    if (defined($storeid)) {
-	my $scfg = storage_config($cfg, $storeid);
-	if ($scfg->{type} eq 'pbs') {
-	    storage_check_enabled($cfg, $storeid);
-	    return PVE::Storage::PBSPlugin->extract_vzdump_config($scfg, $volname, $storeid);
-	}
-    }
-
-    my $archive = abs_filesystem_path($cfg, $volid);
-
-    if ($volid =~ /vzdump-(lxc|openvz)-\d+-(\d{4})_(\d{2})_(\d{2})-(\d{2})_(\d{2})_(\d{2})\.(tgz|(tar(\.(gz|lzo))?))$/) {
-	return extract_vzdump_config_tar($archive, qr!^(\./etc/vzdump/(pct|vps)\.conf)$!);
-    } elsif ($volid =~ /vzdump-qemu-\d+-(\d{4})_(\d{2})_(\d{2})-(\d{2})_(\d{2})_(\d{2})\.(tgz|((tar|vma)(\.(gz|lzo))?))$/) {
-	my $format;
-	my $comp;
-	if ($7 eq 'tgz') {
-	    $format = 'tar';
-	    $comp = 'gz';
-	} else {
-	    $format = $9;
-	    $comp = $11 if defined($11);
-	}
-
-	if ($format eq 'tar') {
-	    return extract_vzdump_config_tar($archive, qr!\(\./qemu-server\.conf\)!);
-	} else {
-	    return extract_vzdump_config_vma($archive, $comp);
-	}
-    } else {
-	die "cannot determine backup guest type for backup archive '$volid'\n";
-    }
-}
-
-sub volume_export {
-    my ($cfg, $fh, $volid, $format, $snapshot, $base_snapshot, $with_snapshots) = @_;
-
-    my ($storeid, $volname) = parse_volume_id($volid, 1);
-    die "cannot export volume '$volid'\n" if !$storeid;
-    my $scfg = storage_config($cfg, $storeid);
-    my $plugin = PVE::Storage::Plugin->lookup($scfg->{type});
-    return $plugin->volume_export($scfg, $storeid, $fh, $volname, $format,
-                                  $snapshot, $base_snapshot, $with_snapshots);
-}
-
-sub volume_import {
-    my ($cfg, $fh, $volid, $format, $base_snapshot, $with_snapshots) = @_;
-
-    my ($storeid, $volname) = parse_volume_id($volid, 1);
-    die "cannot import into volume '$volid'\n" if !$storeid;
-    my $scfg = storage_config($cfg, $storeid);
-    my $plugin = PVE::Storage::Plugin->lookup($scfg->{type});
-    return $plugin->volume_import($scfg, $storeid, $fh, $volname, $format,
-                                  $base_snapshot, $with_snapshots);
-}
-
-sub volume_export_formats {
-    my ($cfg, $volid, $snapshot, $base_snapshot, $with_snapshots) = @_;
-
-    my ($storeid, $volname) = parse_volume_id($volid, 1);
-    return if !$storeid;
-    my $scfg = storage_config($cfg, $storeid);
-    my $plugin = PVE::Storage::Plugin->lookup($scfg->{type});
-    return $plugin->volume_export_formats($scfg, $storeid, $volname,
-                                          $snapshot, $base_snapshot,
-                                          $with_snapshots);
-}
-
-sub volume_import_formats {
-    my ($cfg, $volid, $base_snapshot, $with_snapshots) = @_;
-
-    my ($storeid, $volname) = parse_volume_id($volid, 1);
-    return if !$storeid;
-    my $scfg = storage_config($cfg, $storeid);
-    my $plugin = PVE::Storage::Plugin->lookup($scfg->{type});
-    return $plugin->volume_import_formats($scfg, $storeid, $volname,
-                                          $base_snapshot, $with_snapshots);
-}
-
-sub volume_transfer_formats {
-    my ($cfg, $src_volid, $dst_volid, $snapshot, $base_snapshot, $with_snapshots) = @_;
-    my @export_formats = volume_export_formats($cfg, $src_volid, $snapshot, $base_snapshot, $with_snapshots);
-    my @import_formats = volume_import_formats($cfg, $dst_volid, $base_snapshot, $with_snapshots);
-    my %import_hash = map { $_ => 1 } @import_formats;
-    my @common = grep { $import_hash{$_} } @export_formats;
-    return @common;
-}
-
-# bash completion helper
-
-sub complete_storage {
-    my ($cmdname, $pname, $cvalue) = @_;
-
-    my $cfg = PVE::Storage::config();
-
-    return  $cmdname eq 'add' ? [] : [ PVE::Storage::storage_ids($cfg) ];
-}
-
-sub complete_storage_enabled {
-    my ($cmdname, $pname, $cvalue) = @_;
-
-    my $res = [];
-
-    my $cfg = PVE::Storage::config();
-    foreach my $sid (keys %{$cfg->{ids}}) {
-	next if !storage_check_enabled($cfg, $sid, undef, 1);
-	push @$res, $sid;
-    }
-    return $res;
-}
-
-sub complete_content_type {
-    my ($cmdname, $pname, $cvalue) = @_;
-
-    return [qw(rootdir images vztmpl iso backup snippets)];
-}
-
-sub complete_volume {
-    my ($cmdname, $pname, $cvalue) = @_;
-
-    my $cfg = config();
-
-    my $storage_list = complete_storage_enabled();
-
-    if ($cvalue =~ m/^([^:]+):/) {
-	$storage_list = [ $1 ];
-    } else {
-	if (scalar(@$storage_list) > 1) {
-	    # only list storage IDs to avoid large listings
-	    my $res = [];
-	    foreach my $storeid (@$storage_list) {
-		# Hack: simply return 2 artificial values, so that
-		# completions does not finish
-		push @$res, "$storeid:volname", "$storeid:...";
-	    }
-	    return $res;
-	}
-    }
-
-    my $res = [];
-    foreach my $storeid (@$storage_list) {
-	my $vollist = PVE::Storage::volume_list($cfg, $storeid);
-
-	foreach my $item (@$vollist) {
-	    push @$res, $item->{volid};
-	}
-    }
-
-    return $res;
-}
-
-# Various io-heavy operations require io/bandwidth limits which can be
-# configured on multiple levels: The global defaults in datacenter.cfg, and
-# per-storage overrides. When we want to do a restore from storage A to storage
-# B, we should take the smaller limit defined for storages A and B, and if no
-# such limit was specified, use the one from datacenter.cfg.
-sub get_bandwidth_limit {
-    my ($operation, $storage_list, $override) = @_;
-
-    # called for each limit (global, per-storage) with the 'default' and the
-    # $operation limit and should udpate $override for every limit affecting
-    # us.
-    my $use_global_limits = 0;
-    my $apply_limit = sub {
-	my ($bwlimit) = @_;
-	if (defined($bwlimit)) {
-	    my $limits = PVE::JSONSchema::parse_property_string('bwlimit', $bwlimit);
-	    my $limit = $limits->{$operation} // $limits->{default};
-	    if (defined($limit)) {
-		if (!$override || $limit < $override) {
-		    $override = $limit;
-		}
-		return;
-	    }
-	}
-	# If there was no applicable limit, try to apply the global ones.
-	$use_global_limits = 1;
-    };
-
-    my ($rpcenv, $authuser);
-    if (defined($override)) {
-	$rpcenv = PVE::RPCEnvironment->get();
-	$authuser = $rpcenv->get_user();
-    }
-
-    # Apply per-storage limits - if there are storages involved.
-    if (defined($storage_list) && @$storage_list) {
-	my $config = config();
-
-	# The Datastore.Allocate permission allows us to modify the per-storage
-	# limits, therefore it also allows us to override them.
-	# Since we have most likely multiple storages to check, do a quick check on
-	# the general '/storage' path to see if we can skip the checks entirely:
-	return $override if $rpcenv && $rpcenv->check($authuser, '/storage', ['Datastore.Allocate'], 1);
-
-	my %done;
-	foreach my $storage (@$storage_list) {
-	    next if !defined($storage);
-	    # Avoid duplicate checks:
-	    next if $done{$storage};
-	    $done{$storage} = 1;
-
-	    # Otherwise we may still have individual /storage/$ID permissions:
-	    if (!$rpcenv || !$rpcenv->check($authuser, "/storage/$storage", ['Datastore.Allocate'], 1)) {
-		# And if not: apply the limits.
-		my $storecfg = storage_config($config, $storage);
-		$apply_limit->($storecfg->{bwlimit});
-	    }
-	}
-
-	# Storage limits take precedence over the datacenter defaults, so if
-	# a limit was applied:
-	return $override if !$use_global_limits;
-    }
-
-    # Sys.Modify on '/' means we can change datacenter.cfg which contains the
-    # global default limits.
-    if (!$rpcenv || !$rpcenv->check($authuser, '/', ['Sys.Modify'], 1)) {
-	# So if we cannot modify global limits, apply them to our currently
-	# requested override.
-	my $dc = cfs_read_file('datacenter.cfg');
-	$apply_limit->($dc->{bwlimit});
-    }
-
-    return $override;
-}
-
-# checks if the storage id is available and dies if not
-sub assert_sid_unused {
-    my ($sid) = @_;
-
-    my $cfg = config();
-    if (my $scfg = storage_config($cfg, $sid, 1)) {
-	die "storage ID '$sid' already defined\n";
-    }
-
-    return undef;
-}
-
-1;