diff --git a/PVE/QemuServer.pm b/PVE/QemuServer.pm
index 2e822f37..7104ba2d 100644
--- a/PVE/QemuServer.pm
+++ b/PVE/QemuServer.pm
@@ -6079,7 +6079,8 @@ sub qemu_drive_mirror_monitor {
 		last if $skipcomplete; #do the complete later
 
 		if ($vmiddst && $vmiddst != $vmid) {
-		    if ($qga) {
+		    my $agent_running = $qga && qga_check_running($vmid);
+		    if ($agent_running) {
 			print "freeze filesystem\n";
 			eval { PVE::QemuServer::vm_mon_cmd($vmid, "guest-fsfreeze-freeze"); };
 		    } else {
@@ -6090,7 +6091,7 @@ sub qemu_drive_mirror_monitor {
 		    # if we clone a disk for a new target vm, we don't switch the disk
 		    PVE::QemuServer::qemu_blockjobs_cancel($vmid, $jobs);
 
-		    if ($qga) {
+		    if ($agent_running) {
 			print "unfreeze filesystem\n";
 			eval { PVE::QemuServer::vm_mon_cmd($vmid, "guest-fsfreeze-thaw"); };
 		    } else {
diff --git a/PVE/VZDump/QemuServer.pm b/PVE/VZDump/QemuServer.pm
index 65ca09d0..a6308293 100644
--- a/PVE/VZDump/QemuServer.pm
+++ b/PVE/VZDump/QemuServer.pm
@@ -404,7 +404,13 @@ sub archive {
 	$qmpclient->queue_cmd($vmid, $add_fd_cb, 'getfd',
 			      fd => $outfileno, fdname => "backup");
 
-	if ($self->{vmlist}->{$vmid}->{agent} && $vm_is_running){
+	my $agent_running = 0;
+
+	if ($self->{vmlist}->{$vmid}->{agent} && $vm_is_running) {
+	    $agent_running = PVE::QemuServer::qga_check_running($vmid);
+	}
+
+	if ($agent_running){
 	    eval { PVE::QemuServer::vm_mon_cmd($vmid, "guest-fsfreeze-freeze"); };
 	    if (my $err = $@) {
 		$self->logerr($err);
@@ -413,7 +419,7 @@ sub archive {
 
 	$qmpclient->queue_execute();
 
-	if ($self->{vmlist}->{$vmid}->{agent} && $vm_is_running ){
+	if ($agent_running){
 	    eval { PVE::QemuServer::vm_mon_cmd($vmid, "guest-fsfreeze-thaw"); };
 	    if (my $err = $@) {
 		$self->logerr($err);