diff --git a/PVE/API2/Qemu.pm b/PVE/API2/Qemu.pm
index ad8713fe..29cd4c44 100644
--- a/PVE/API2/Qemu.pm
+++ b/PVE/API2/Qemu.pm
@@ -895,6 +895,12 @@ __PACKAGE__->register_method({
 		type => 'integer',
 		minimum => 0,
 		optional => 1,
+	    },
+	    keepActive => {
+		description => "Do not decativate storage volumes.",
+		type => 'boolean',
+		optional => 1,
+		default => 0,
 	    }
 	},
     },
@@ -916,6 +922,10 @@ __PACKAGE__->register_method({
 	raise_param_exc({ skiplock => "Only root may use this option." }) 
 	    if $skiplock && $user ne 'root@pam';
 
+	my $keepActive = extract_param($param, 'keepActive');
+	raise_param_exc({ keepActive => "Only root may use this option." }) 
+	    if $keepActive && $user ne 'root@pam';
+
 	my $storecfg = PVE::Storage::config();
 
 	my $realcmd = sub {
@@ -923,7 +933,8 @@ __PACKAGE__->register_method({
 
 	    syslog('info', "stop VM $vmid: $upid\n");
 
-	    PVE::QemuServer::vm_stop($storecfg, $vmid, $skiplock, 0, $param->{timeout});
+	    PVE::QemuServer::vm_stop($storecfg, $vmid, $skiplock, 0, 
+				     $param->{timeout}, 0, 1, $keepActive);
 
 	    return;
 	};
@@ -1001,6 +1012,12 @@ __PACKAGE__->register_method({
 		type => 'boolean',
 		optional => 1,
 		default => 0,
+	    },
+	    keepActive => {
+		description => "Do not decativate storage volumes.",
+		type => 'boolean',
+		optional => 1,
+		default => 0,
 	    }
 	},
     },
@@ -1022,6 +1039,10 @@ __PACKAGE__->register_method({
 	raise_param_exc({ skiplock => "Only root may use this option." }) 
 	    if $skiplock && $user ne 'root@pam';
 
+	my $keepActive = extract_param($param, 'keepActive');
+	raise_param_exc({ keepActive => "Only root may use this option." }) 
+	    if $keepActive && $user ne 'root@pam';
+
 	my $storecfg = PVE::Storage::config();
 
 	my $realcmd = sub {
@@ -1029,8 +1050,8 @@ __PACKAGE__->register_method({
 
 	    syslog('info', "shutdown VM $vmid: $upid\n");
 
-	    PVE::QemuServer::vm_stop($storecfg, $vmid, $skiplock, 0, 
-				     $param->{timeout}, 1, $param->{forceStop});
+	    PVE::QemuServer::vm_stop($storecfg, $vmid, $skiplock, 0, $param->{timeout}, 
+				     1, $param->{forceStop}, $keepActive);
 
 	    return;
 	};
diff --git a/PVE/QemuServer.pm b/PVE/QemuServer.pm
index 5a280e6c..27030e4b 100644
--- a/PVE/QemuServer.pm
+++ b/PVE/QemuServer.pm
@@ -2565,21 +2565,24 @@ sub get_vm_volumes {
 }
 
 sub vm_stop_cleanup {
-    my ($storecfg, $vmid, $conf) = @_;
+    my ($storecfg, $vmid, $conf, $keepActive) = @_;
 
     eval {
 	fairsched_rmnod($vmid); # try to destroy group
 
-	my $vollist = get_vm_volumes($conf);
-	PVE::Storage::deactivate_volumes($storecfg, $vollist);
+	if (!$keepActive) {
+	    my $vollist = get_vm_volumes($conf);
+	    PVE::Storage::deactivate_volumes($storecfg, $vollist);
+	}
     };
     warn $@ if $@; # avoid errors - just warn
 }
 
 # Note: use $nockeck to skip tests if VM configuration file exists.
-# We need that when migration VMs to other nodes (files already moved) 
+# We need that when migration VMs to other nodes (files already moved)
+# Note: we set $keepActive in vzdump stop mode - volumes need to stay active
 sub vm_stop {
-    my ($storecfg, $vmid, $skiplock, $nocheck, $timeout, $shutdown, $force) = @_;
+    my ($storecfg, $vmid, $skiplock, $nocheck, $timeout, $shutdown, $force, $keepActive) = @_;
 
     $timeout = 60 if !defined($timeout);
 
@@ -2620,7 +2623,7 @@ sub vm_stop {
 		    die "VM quit/powerdown failed - got timeout\n";
 		}
 	    } else {
-		vm_stop_cleanup($storecfg, $vmid, $conf) if $conf;
+		vm_stop_cleanup($storecfg, $vmid, $conf, $keepActive) if $conf;
 		return;
 	    }
 	} else {
@@ -2647,7 +2650,7 @@ sub vm_stop {
 	    sleep 1;
 	}
 
-	vm_stop_cleanup($storecfg, $vmid, $conf) if $conf;
+	vm_stop_cleanup($storecfg, $vmid, $conf, $keepActive) if $conf;
    });
 }
 
diff --git a/PVE/VZDump/QemuServer.pm b/PVE/VZDump/QemuServer.pm
index 8066566b..14778f43 100644
--- a/PVE/VZDump/QemuServer.pm
+++ b/PVE/VZDump/QemuServer.pm
@@ -193,7 +193,7 @@ sub stop_vm {
 
     my $wait = $opts->{stopwait} * 60;
     # send shutdown and wait
-    $self->cmd ("qm shutdown $vmid --skiplock --timeout $wait");
+    $self->cmd ("qm shutdown $vmid --skiplock --keepActive --timeout $wait");
 }
 
 sub start_vm {
diff --git a/changelog.Debian b/changelog.Debian
index 4de5b22d..5d3e3937 100644
--- a/changelog.Debian
+++ b/changelog.Debian
@@ -1,6 +1,8 @@
 qemu-server (2.0-15) unstable; urgency=low
 
   * online migration fix: close tunnel later, wait for connection close
+  
+  * fix bug #81: do no deactivate volumes in vzdump stop mode
 
  -- Proxmox Support Team <support@proxmox.com>  Tue, 17 Jan 2012 11:24:56 +0100