diff --git a/pkg/apis/compute/disk.go b/pkg/apis/compute/disk.go
index 03c0ba2ebc..985f292212 100644
--- a/pkg/apis/compute/disk.go
+++ b/pkg/apis/compute/disk.go
@@ -317,5 +317,6 @@ type DiskAllocateFromBackupInput struct {
 }
 
 type DiskDeleteInput struct {
-	SkipRecycle *bool
+	SkipRecycle      *bool
+	EsxiFlatFilePath string
 }
diff --git a/pkg/compute/hostdrivers/kvm.go b/pkg/compute/hostdrivers/kvm.go
index f37daf51d5..8d3244eb57 100644
--- a/pkg/compute/hostdrivers/kvm.go
+++ b/pkg/compute/hostdrivers/kvm.go
@@ -294,6 +294,9 @@ func (self *SKVMHostDriver) RequestDeallocateDiskOnHost(ctx context.Context, hos
 
 	url := fmt.Sprintf("/disks/%s/delete/%s", storage.Id, disk.Id)
 	body := jsonutils.NewDict()
+	if flatPath := disk.GetMetadata(ctx, api.DISK_META_ESXI_FLAT_FILE_PATH, nil); flatPath != "" {
+		body.Set("esxi_flat_file_path", jsonutils.NewString(flatPath))
+	}
 	_, err := host.Request(ctx, task.GetUserCred(), "POST", url, header, body)
 	if err != nil {
 		if errors.Cause(err) == cloudprovider.ErrNotFound {
diff --git a/pkg/hostman/guestman/qemu-kvm.go b/pkg/hostman/guestman/qemu-kvm.go
index 73677d27ad..8ec941a572 100644
--- a/pkg/hostman/guestman/qemu-kvm.go
+++ b/pkg/hostman/guestman/qemu-kvm.go
@@ -1505,9 +1505,6 @@ func (s *SKVMGuestInstance) Delete(ctx context.Context, migrated bool) error {
 	if err := s.delTmpDisks(ctx, migrated); err != nil {
 		return errors.Wrap(err, "delTmpDisks")
 	}
-	if err := s.delFlatFiles(ctx); err != nil {
-		return errors.Wrap(err, "delFlatFiles")
-	}
 	output, err := procutils.NewCommand("rm", "-rf", s.HomeDir()).Output()
 	if err != nil {
 		return errors.Wrapf(err, "rm %s failed: %s", s.HomeDir(), output)
diff --git a/pkg/hostman/storageman/disk_local.go b/pkg/hostman/storageman/disk_local.go
index 465358b3a3..027d3a9c0a 100644
--- a/pkg/hostman/storageman/disk_local.go
+++ b/pkg/hostman/storageman/disk_local.go
@@ -33,6 +33,7 @@ import (
 	"yunion.io/x/onecloud/pkg/appctx"
 	"yunion.io/x/onecloud/pkg/cloudcommon/consts"
 	deployapi "yunion.io/x/onecloud/pkg/hostman/hostdeployer/apis"
+	"yunion.io/x/onecloud/pkg/hostman/hostdeployer/deployclient"
 	"yunion.io/x/onecloud/pkg/hostman/hostutils"
 	"yunion.io/x/onecloud/pkg/hostman/options"
 	"yunion.io/x/onecloud/pkg/hostman/storageman/remotefile"
@@ -134,16 +135,14 @@ func (d *SLocalDisk) Delete(ctx context.Context, params interface{}) (jsonutils.
 		return nil, err
 	}
 	d.UmountFuseImage()
-
-	/* ????????????????
-	   files = os.listdir(self.storage.path)
-	   for f in files:
-	       if f.startswith(self.id):
-	           if not re.match(r'[a-z0-9\-]*\.\d{14}', f):
-	               path = os.path.join(self.storage.path, f)
-	               print 'delete backing-file:', path
-	               self.storage.delete_diskfile(path)
-	*/
+	if p.EsxiFlatFilePath != "" {
+		connections := &deployapi.EsxiDisksConnectionInfo{Disks: []*deployapi.EsxiDiskInfo{{DiskPath: p.EsxiFlatFilePath}}}
+		_, err := deployclient.GetDeployClient().DisconnectEsxiDisks(ctx, connections)
+		if err != nil {
+			log.Errorf("Disconnect %s esxi disks failed %s", p.EsxiFlatFilePath, err)
+			return nil, err
+		}
+	}
 
 	d.Storage.RemoveDisk(d)
 	return nil, nil
diff --git a/pkg/hostman/storageman/diskhandlers/diskhandler.go b/pkg/hostman/storageman/diskhandlers/diskhandler.go
index 8d194ec1dc..bc1a0533e8 100644
--- a/pkg/hostman/storageman/diskhandlers/diskhandler.go
+++ b/pkg/hostman/storageman/diskhandlers/diskhandler.go
@@ -280,8 +280,9 @@ func diskCreate(ctx context.Context, userCred mcclient.TokenCredential, storage
 }
 
 func diskDelete(ctx context.Context, userCred mcclient.TokenCredential, storage storageman.IStorage, diskId string, disk storageman.IDisk, body jsonutils.JSONObject) (interface{}, error) {
+	flatPath, _ := body.GetString("esxi_flat_file_path")
 	if disk != nil {
-		hostutils.DelayTask(ctx, disk.Delete, compute.DiskDeleteInput{})
+		hostutils.DelayTask(ctx, disk.Delete, compute.DiskDeleteInput{EsxiFlatFilePath: flatPath})
 	} else {
 		hostutils.DelayTask(ctx, nil, nil)
 	}