diff --git a/pkg/hostman/storageman/disk_rbd.go b/pkg/hostman/storageman/disk_rbd.go
index 59ba32c8ae..2488112f92 100644
--- a/pkg/hostman/storageman/disk_rbd.go
+++ b/pkg/hostman/storageman/disk_rbd.go
@@ -172,6 +172,7 @@ func (d *SRBDDisk) createFromTemplate(ctx context.Context, imageId, format strin
 	defer imageCacheManager.ReleaseImage(imageId)
 	storage := d.Storage.(*SRbdStorage)
 	destPool, _ := storage.StorageConf.GetString("pool")
+	storage.deleteImage(destPool, d.Id) //重装系统时，需要删除以前的系统盘
 	if err := storage.cloneImage(imageCacheManager.GetPath(), imageCache.GetName(), destPool, d.Id); err != nil {
 		return nil, err
 	}
diff --git a/pkg/hostman/storageman/storage_rbd.go b/pkg/hostman/storageman/storage_rbd.go
index 5c045e86ba..639a23c12c 100644
--- a/pkg/hostman/storageman/storage_rbd.go
+++ b/pkg/hostman/storageman/storage_rbd.go
@@ -268,9 +268,22 @@ func (s *SRbdStorage) copyImage(srcPool string, srcImage string, destPool string
 // 速度快
 func (s *SRbdStorage) cloneImage(srcPool string, srcImage string, destPool string, destImage string) error {
 	_, err := s.withImage(srcPool, srcImage, func(src *rbd.Image) (interface{}, error) {
-		snapshot, err := src.CreateSnapshot(destImage)
+		snapInfos, err := src.GetSnapshotNames()
 		if err != nil {
-			return nil, errors.Wrap(err, "src.CreateSnapshot")
+			return nil, errors.Wrap(err, "image.GetSnapshotNames()")
+		}
+		var snapshot *rbd.Snapshot = nil
+		for _, snap := range snapInfos {
+			if snap.Name == destImage {
+				snapshot = src.GetSnapshot(destImage)
+				break
+			}
+		}
+		if snapshot == nil {
+			snapshot, err = src.CreateSnapshot(destImage)
+			if err != nil {
+				return nil, errors.Wrap(err, "src.CreateSnapshot")
+			}
 		}
 
 		isProtect, err := snapshot.IsProtected()