diff --git a/xCAT-server/lib/xcat/plugins/kvm.pm b/xCAT-server/lib/xcat/plugins/kvm.pm
index b10009545..4b6fda72f 100644
--- a/xCAT-server/lib/xcat/plugins/kvm.pm
+++ b/xCAT-server/lib/xcat/plugins/kvm.pm
@@ -1603,13 +1603,14 @@ sub clonevm {
     if ($target) { #we need to take a single vm and create a master out of it
         return promote_vm_to_master(target=>$target,force=>$force,detach=>$detach);
     } elsif ($base) {
-        return clone_vm_from_master(base=>$base);
+        return clone_vm_from_master(base=>$base,detach=>$detach);
     }
 }
 
 sub clone_vm_from_master {
     my %args = @_;
     my $base=$args{base};
+    my $detach=$args{detach};
     my $vmmastertab=xCAT::Table->new('vmmaster',-create=>0);
     my $kvmmastertab = xCAT::Table->new('kvm_masterdata',-create=>0);
     unless ($vmmastertab and $kvmmastertab) {
@@ -1653,8 +1654,19 @@ sub clone_vm_from_master {
         $filename =~ s/^.*$mastername/$node/;
         $filename =~ m!\.([^\.]*)\z!;
         my $format=$1;
-        my $newbasexml="<volume><name>$filename</name><target><format type='$format'/></target><capacity>0</capacity><backingStore><path>$srcfilename</path><format type='$format'/></backingStore></volume>";
-        my $newvol = $destinationpool->create_volume($newbasexml);
+        my $newvol;
+        if ($detach) {
+            my $sourcevol = $hypconn->get_volume_by_path($srcfilename);
+            my %sourceinfo = %{$sourcevol->get_info()};
+            my $targxml = "<volume><name>$filename</name><target><format type='$format'/></target><capacity>".$sourceinfo{capacity}."</capacity></volume>";
+            xCAT::SvrUtils::sendmsg("Cloning ".$sourcevol->get_name()." (currently is ".($sourceinfo{allocation}/1048576)." MB and has a capacity of ".($sourceinfo{capacity}/1048576)."MB)",$callback,$node);
+            eval {
+             $newvol =$destinationpool->clone_volume($targxml,$sourcevol);
+            };
+        } else {
+            my $newbasexml="<volume><name>$filename</name><target><format type='$format'/></target><capacity>0</capacity><backingStore><path>$srcfilename</path><format type='$format'/></backingStore></volume>";
+           $newvol = $destinationpool->create_volume($newbasexml);
+        }
         my $newfilename=$newvol->get_path();
         $disk->findnodes("./source")->[0]->setAttribute("file"=>$newfilename);
     }