diff --git a/pkg/apis/compute/disk_const.go b/pkg/apis/compute/disk_const.go
index 0b92c53405..5ea1d8af6e 100644
--- a/pkg/apis/compute/disk_const.go
+++ b/pkg/apis/compute/disk_const.go
@@ -64,7 +64,10 @@ const (
 	DISK_EXIST     = "exist"
 )
 
-const DISK_META_EXISTING_PATH = "disk_existing_path"
+const (
+	DISK_META_EXISTING_PATH      = "disk_existing_path"
+	DISK_META_LAST_ATTACHED_HOST = "__disk_last_attached_host"
+)
 
 const (
 	DISK_DRIVER_VIRTIO = "virtio"
diff --git a/pkg/apis/compute/storage_const.go b/pkg/apis/compute/storage_const.go
index 78387750aa..866327667a 100644
--- a/pkg/apis/compute/storage_const.go
+++ b/pkg/apis/compute/storage_const.go
@@ -163,7 +163,7 @@ var (
 		STORAGE_NFS, STORAGE_GPFS, STORAGE_VSAN, STORAGE_CIFS, STORAGE_CLVM, STORAGE_SLVM}
 
 	SHARED_FILE_STORAGE = []string{STORAGE_NFS, STORAGE_GPFS}
-	FIEL_STORAGE        = []string{STORAGE_LOCAL, STORAGE_NFS, STORAGE_GPFS}
+	FIEL_STORAGE        = []string{STORAGE_LOCAL, STORAGE_NFS, STORAGE_GPFS, STORAGE_LVM, STORAGE_CLVM, STORAGE_SLVM}
 
 	// 目前来说只支持这些
 	SHARED_STORAGE = []string{STORAGE_NFS, STORAGE_GPFS, STORAGE_RBD, STORAGE_CLVM, STORAGE_SLVM}
diff --git a/pkg/compute/hostdrivers/base.go b/pkg/compute/hostdrivers/base.go
index 90d82fa524..9d6b9693f3 100644
--- a/pkg/compute/hostdrivers/base.go
+++ b/pkg/compute/hostdrivers/base.go
@@ -59,7 +59,11 @@ func (self *SBaseHostDriver) ValidateDiskSize(storage *models.SStorage, sizeGb i
 	return fmt.Errorf("Not Implement ValidateDiskSize")
 }
 
-func (self *SBaseHostDriver) RequestDeleteSnapshotsWithStorage(ctx context.Context, host *models.SHost, snapshot *models.SSnapshot, task taskman.ITask) error {
+func (self *SBaseHostDriver) RequestDeleteSnapshotsWithStorage(ctx context.Context, host *models.SHost, snapshot *models.SSnapshot, task taskman.ITask, snapshotIds []string) error {
+	return fmt.Errorf("Not Implement")
+}
+
+func (self *SBaseHostDriver) RequestDeleteSnapshotWithoutGuest(ctx context.Context, host *models.SHost, snapshot *models.SSnapshot, params *jsonutils.JSONDict, task taskman.ITask) error {
 	return fmt.Errorf("Not Implement")
 }
 
diff --git a/pkg/compute/hostdrivers/kvm.go b/pkg/compute/hostdrivers/kvm.go
index 1e74a7f037..819ff964f4 100644
--- a/pkg/compute/hostdrivers/kvm.go
+++ b/pkg/compute/hostdrivers/kvm.go
@@ -410,10 +410,11 @@ func (self *SKVMHostDriver) RequestSaveUploadImageOnHost(ctx context.Context, ho
 	return err
 }
 
-func (self *SKVMHostDriver) RequestDeleteSnapshotsWithStorage(ctx context.Context, host *models.SHost, snapshot *models.SSnapshot, task taskman.ITask) error {
+func (self *SKVMHostDriver) RequestDeleteSnapshotsWithStorage(ctx context.Context, host *models.SHost, snapshot *models.SSnapshot, task taskman.ITask, snapshotIds []string) error {
 	url := fmt.Sprintf("/storages/%s/delete-snapshots", snapshot.StorageId)
 	body := jsonutils.NewDict()
 	body.Set("disk_id", jsonutils.NewString(snapshot.DiskId))
+	body.Set("snapshot_ids", jsonutils.NewStringArray(snapshotIds))
 
 	header := task.GetTaskRequestHeader()
 
@@ -421,6 +422,14 @@ func (self *SKVMHostDriver) RequestDeleteSnapshotsWithStorage(ctx context.Contex
 	return err
 }
 
+func (self *SKVMHostDriver) RequestDeleteSnapshotWithoutGuest(ctx context.Context, host *models.SHost, snapshot *models.SSnapshot, params *jsonutils.JSONDict, task taskman.ITask) error {
+	url := fmt.Sprintf("/storages/%s/delete-snapshot", snapshot.StorageId)
+	header := task.GetTaskRequestHeader()
+
+	_, err := host.Request(ctx, task.GetUserCred(), "POST", url, header, params)
+	return err
+}
+
 func (self *SKVMHostDriver) ValidateResetDisk(ctx context.Context, userCred mcclient.TokenCredential, disk *models.SDisk, snapshot *models.SSnapshot, guests []models.SGuest, data *jsonutils.JSONDict) (*jsonutils.JSONDict, error) {
 	if len(guests) > 1 {
 		return nil, httperrors.NewBadRequestError("Disk attach muti guests")
diff --git a/pkg/compute/models/disks.go b/pkg/compute/models/disks.go
index fc36e1b095..4911716317 100644
--- a/pkg/compute/models/disks.go
+++ b/pkg/compute/models/disks.go
@@ -2190,6 +2190,21 @@ func (self *SDisk) RealDelete(ctx context.Context, userCred mcclient.TokenCreden
 	return self.SVirtualResourceBase.Delete(ctx, userCred)
 }
 
+func (self *SDisk) RecordLastAttachedHost(ctx context.Context, userCred mcclient.TokenCredential, hostId string) error {
+	storage, err := self.GetStorage()
+	if err != nil {
+		return err
+	}
+	if storage.StorageType != api.STORAGE_SLVM {
+		return nil
+	}
+	return self.SetMetadata(ctx, api.DISK_META_LAST_ATTACHED_HOST, hostId, userCred)
+}
+
+func (self *SDisk) GetLastAttachedHost(ctx context.Context, userCred mcclient.TokenCredential) string {
+	return self.GetMetadata(ctx, api.DISK_META_LAST_ATTACHED_HOST, userCred)
+}
+
 // 同步磁盘状态
 func (self *SDisk) PerformSyncstatus(ctx context.Context, userCred mcclient.TokenCredential, query jsonutils.JSONObject, input api.DiskSyncstatusInput) (jsonutils.JSONObject, error) {
 	var openTask = true
diff --git a/pkg/compute/models/hostdrivers.go b/pkg/compute/models/hostdrivers.go
index 04f7dce7f5..fa33ba07c2 100644
--- a/pkg/compute/models/hostdrivers.go
+++ b/pkg/compute/models/hostdrivers.go
@@ -49,7 +49,8 @@ type IHostDriver interface {
 	// resize disk
 	RequestResizeDiskOnHost(ctx context.Context, host *SHost, storage *SStorage, disk *SDisk, size int64, task taskman.ITask) error
 
-	RequestDeleteSnapshotsWithStorage(ctx context.Context, host *SHost, snapshot *SSnapshot, task taskman.ITask) error
+	RequestDeleteSnapshotsWithStorage(ctx context.Context, host *SHost, snapshot *SSnapshot, task taskman.ITask, snapshotIds []string) error
+	RequestDeleteSnapshotWithoutGuest(ctx context.Context, host *SHost, snapshot *SSnapshot, params *jsonutils.JSONDict, task taskman.ITask) error
 	RequestResetDisk(ctx context.Context, host *SHost, disk *SDisk, params *jsonutils.JSONDict, task taskman.ITask) error
 	RequestCleanUpDiskSnapshots(ctx context.Context, host *SHost, disk *SDisk, params *jsonutils.JSONDict, task taskman.ITask) error
 	PrepareConvert(host *SHost, image, raid string, data jsonutils.JSONObject) (*api.ServerCreateInput, error)
diff --git a/pkg/compute/models/snapshots.go b/pkg/compute/models/snapshots.go
index b1355bcca7..c711c1dd19 100644
--- a/pkg/compute/models/snapshots.go
+++ b/pkg/compute/models/snapshots.go
@@ -730,16 +730,20 @@ func (self *SSnapshotManager) PerformDeleteDiskSnapshots(ctx context.Context, us
 	if snapshots == nil || len(snapshots) == 0 {
 		return nil, httperrors.NewNotFoundError("Disk %s dose not have snapshot", diskId)
 	}
+	snapshotIds := []string{}
 	for i := 0; i < len(snapshots); i++ {
 		if snapshots[i].FakeDeleted == false {
 			return nil, httperrors.NewBadRequestError("Can not delete disk snapshots, have manual snapshot")
 		}
+		snapshotIds = append(snapshotIds, snapshots[i].Id)
 	}
-	err = snapshots[0].StartSnapshotsDeleteTask(ctx, userCred, "")
+	err = snapshots[0].StartSnapshotsDeleteTask(ctx, userCred, "", snapshotIds)
 	return nil, err
 }
 
-func (self *SSnapshot) StartSnapshotsDeleteTask(ctx context.Context, userCred mcclient.TokenCredential, parentTaskId string) error {
+func (self *SSnapshot) StartSnapshotsDeleteTask(ctx context.Context, userCred mcclient.TokenCredential, parentTaskId string, snapshotIds []string) error {
+	data := jsonutils.NewDict()
+	data.Set("snapshot_ids", jsonutils.NewStringArray(snapshotIds))
 	task, err := taskman.TaskManager.NewTask(ctx, "BatchSnapshotsDeleteTask", self, userCred, nil, parentTaskId, "", nil)
 	if err != nil {
 		log.Errorln(err)
diff --git a/pkg/compute/storagedrivers/base.go b/pkg/compute/storagedrivers/base.go
index 2591a43abf..e297e33903 100644
--- a/pkg/compute/storagedrivers/base.go
+++ b/pkg/compute/storagedrivers/base.go
@@ -96,6 +96,36 @@ func (self *SBaseStorageDriver) RequestDeleteSnapshot(ctx context.Context, snaps
 			return err
 		}
 	}
+	if guest == nil {
+		storage := snapshot.GetStorage()
+		host, err := storage.GetMasterHost()
+		if err != nil {
+			return err
+		}
+		convertSnapshot, err := models.SnapshotManager.GetConvertSnapshot(snapshot)
+		if err != nil && err != sql.ErrNoRows {
+			return errors.Wrap(err, "get convert snapshot")
+		}
+		params := jsonutils.NewDict()
+		params.Set("delete_snapshot", jsonutils.NewString(snapshot.Id))
+		params.Set("disk_id", jsonutils.NewString(snapshot.DiskId))
+		disk, err := models.DiskManager.FetchById(snapshot.DiskId)
+		if err != nil && err != sql.ErrNoRows {
+			return errors.Wrap(err, "get disk by snapshot")
+		}
+		if !snapshot.OutOfChain {
+			if convertSnapshot != nil {
+				params.Set("convert_snapshot", jsonutils.NewString(convertSnapshot.Id))
+			} else if disk != nil {
+				params.Set("block_stream", jsonutils.JSONTrue)
+			} else {
+				params.Set("auto_deleted", jsonutils.JSONTrue)
+			}
+		} else {
+			params.Set("auto_deleted", jsonutils.JSONTrue)
+		}
+		return host.GetHostDriver().RequestDeleteSnapshotWithoutGuest(ctx, host, snapshot, params, task)
+	}
 
 	if jsonutils.QueryBoolean(task.GetParams(), "reload_disk", false) && snapshot.OutOfChain {
 		guest.SetStatus(task.GetUserCred(), api.VM_SNAPSHOT, "Start Reload Snapshot")
diff --git a/pkg/compute/tasks/disk_delete_task.go b/pkg/compute/tasks/disk_delete_task.go
index bf85fab26f..3a72b81f80 100644
--- a/pkg/compute/tasks/disk_delete_task.go
+++ b/pkg/compute/tasks/disk_delete_task.go
@@ -118,10 +118,16 @@ func (self *DiskDeleteTask) startDeleteDisk(ctx context.Context, disk *models.SD
 
 	purgeParams := jsonutils.QueryBoolean(self.Params, "purge", false)
 
-	host, err := storage.GetMasterHost()
-	if err != nil && errors.Cause(err) != sql.ErrNoRows && !purgeParams {
-		self.OnGuestDiskDeleteCompleteFailed(ctx, disk, jsonutils.NewString("storage.GetMasterHost"))
-		return
+	var host *models.SHost
+	if hostId := disk.GetLastAttachedHost(ctx, self.UserCred); hostId != "" {
+		host = models.HostManager.FetchHostById(hostId)
+	}
+	if host == nil {
+		host, err = storage.GetMasterHost()
+		if err != nil && errors.Cause(err) != sql.ErrNoRows && !purgeParams {
+			self.OnGuestDiskDeleteCompleteFailed(ctx, disk, jsonutils.NewString("storage.GetMasterHost"))
+			return
+		}
 	}
 
 	isPurge := false
diff --git a/pkg/compute/tasks/guest_detach_disk_task.go b/pkg/compute/tasks/guest_detach_disk_task.go
index d57f5d060d..b60357a3c6 100644
--- a/pkg/compute/tasks/guest_detach_disk_task.go
+++ b/pkg/compute/tasks/guest_detach_disk_task.go
@@ -60,6 +60,12 @@ func (self *GuestDetachDiskTask) OnInit(ctx context.Context, obj db.IStandaloneM
 		return
 	}
 
+	err = disk.RecordLastAttachedHost(ctx, self.UserCred, host.Id)
+	if err != nil {
+		self.OnTaskFail(ctx, guest, nil, jsonutils.NewString(err.Error()))
+		return
+	}
+
 	if !host.GetEnabled() {
 		self.OnDetachDiskCompleteFailed(ctx, guest, jsonutils.Marshal(map[string]string{"error": fmt.Sprintf("host %s(%s) is disabled", host.Name, host.Id)}))
 		return
diff --git a/pkg/compute/tasks/snapshot_delete_task.go b/pkg/compute/tasks/snapshot_delete_task.go
index b11c4406e2..ba217cc5d5 100644
--- a/pkg/compute/tasks/snapshot_delete_task.go
+++ b/pkg/compute/tasks/snapshot_delete_task.go
@@ -172,8 +172,16 @@ func (self *BatchSnapshotsDeleteTask) StartStorageDeleteSnapshot(ctx context.Con
 		self.SetStageFailed(ctx, jsonutils.NewString(errors.Wrapf(err, "snapshot.GetHost").Error()))
 		return
 	}
+
+	snapshotIds := []string{}
+	err = self.Params.Unmarshal(&snapshotIds, "snapshot_ids")
+	if err != nil {
+		self.SetStageFailed(ctx, jsonutils.NewString(errors.Wrapf(err, "unmarshal snapshot ids").Error()))
+		return
+	}
+
 	self.SetStage("OnStorageDeleteSnapshot", nil)
-	err = host.GetHostDriver().RequestDeleteSnapshotsWithStorage(ctx, host, snapshot, self)
+	err = host.GetHostDriver().RequestDeleteSnapshotsWithStorage(ctx, host, snapshot, self, snapshotIds)
 	if err != nil {
 		self.SetStageFailed(ctx, jsonutils.NewString(err.Error()))
 	}
diff --git a/pkg/compute/tasks/storage_cache_image_task.go b/pkg/compute/tasks/storage_cache_image_task.go
index 52070e7df2..a11be71f70 100644
--- a/pkg/compute/tasks/storage_cache_image_task.go
+++ b/pkg/compute/tasks/storage_cache_image_task.go
@@ -62,8 +62,6 @@ func (self *StorageCacheImageTask) OnRelinquishLeastUsedCachedImageComplete(ctx
 
 	db.OpsLog.LogEvent(storageCache, db.ACT_CACHING_IMAGE, imageId, self.UserCred)
 
-	self.SetStage("OnImageCacheComplete", nil)
-
 	var host *models.SHost
 	var err error
 	serverId, _ := self.Params.GetString("server_id")
@@ -75,7 +73,8 @@ func (self *StorageCacheImageTask) OnRelinquishLeastUsedCachedImageComplete(ctx
 			return
 		}
 		server := guest.(*models.SGuest)
-		server.SetStatus(self.GetUserCred(), api.VM_IMAGE_CACHING, "")
+		self.Params.Set("guest_oldstatus", jsonutils.NewString(server.Status))
+		server.SetStatus(self.GetUserCred(), api.VM_IMAGE_CACHING, "start cache image")
 		host, _ = server.GetHost()
 	} else {
 		host, err = storageCache.GetMasterHost()
@@ -86,6 +85,7 @@ func (self *StorageCacheImageTask) OnRelinquishLeastUsedCachedImageComplete(ctx
 		}
 	}
 
+	self.SetStage("OnImageCacheComplete", nil)
 	err = host.GetHostDriver().CheckAndSetCacheImage(ctx, host, storageCache, self)
 	if err != nil {
 		errData := taskman.Error2TaskData(err)
@@ -133,6 +133,20 @@ func (self *StorageCacheImageTask) OnCacheSucc(ctx context.Context, cache *model
 		scimg.SetExternalId(extImgId)
 	}
 	models.CachedimageManager.ImageAddRefCount(imageId)
+
+	serverId, _ := self.Params.GetString("server_id")
+	if len(serverId) > 0 {
+		guest, err := models.GuestManager.FetchById(serverId)
+		if err != nil {
+			errData := taskman.Error2TaskData(err)
+			self.OnImageCacheCompleteFailed(ctx, cache, errData)
+			return
+		}
+		server := guest.(*models.SGuest)
+		serverOldStatus, _ := self.Params.GetString("guest_oldstatus")
+		server.SetStatus(self.GetUserCred(), serverOldStatus, "on cache image success")
+	}
+
 	db.OpsLog.LogEvent(cache, db.ACT_CACHED_IMAGE, imageId, self.UserCred)
 	self.SetStageComplete(ctx, data)
 }
diff --git a/pkg/hostimage/host_image_service.go b/pkg/hostimage/host_image_service.go
index 49c0cc138c..413e209bc3 100644
--- a/pkg/hostimage/host_image_service.go
+++ b/pkg/hostimage/host_image_service.go
@@ -115,7 +115,7 @@ func getSnapshotPath(diskId, snapshotId string) string {
 		}
 	}
 	for _, vg := range HostImageOptions.LVMVolumeGroups {
-		diskPath := path.Join("/dev", vg, "snap_"+diskId+snapshotId)
+		diskPath := path.Join("/dev", vg, "snap_"+snapshotId)
 		if _, err := os.Stat(diskPath); !os.IsNotExist(err) {
 			return diskPath
 		}
diff --git a/pkg/hostman/guestman/guestman.go b/pkg/hostman/guestman/guestman.go
index 8cda9fcda3..f62964d999 100644
--- a/pkg/hostman/guestman/guestman.go
+++ b/pkg/hostman/guestman/guestman.go
@@ -1142,7 +1142,7 @@ func (m *SGuestManager) DeleteSnapshot(ctx context.Context, params interface{})
 	} else {
 		res := jsonutils.NewDict()
 		res.Set("deleted", jsonutils.JSONTrue)
-		return res, delParams.Disk.DeleteSnapshot(delParams.DeleteSnapshot, "")
+		return res, delParams.Disk.DeleteSnapshot(delParams.DeleteSnapshot, "", false)
 	}
 }
 
diff --git a/pkg/hostman/guestman/guesttasks.go b/pkg/hostman/guestman/guesttasks.go
index 55cdf8c9f9..ce908c264b 100644
--- a/pkg/hostman/guestman/guesttasks.go
+++ b/pkg/hostman/guestman/guesttasks.go
@@ -29,6 +29,7 @@ import (
 	"yunion.io/x/pkg/errors"
 	"yunion.io/x/pkg/utils"
 
+	api "yunion.io/x/onecloud/pkg/apis/compute"
 	hostapi "yunion.io/x/onecloud/pkg/apis/host"
 	"yunion.io/x/onecloud/pkg/appctx"
 	"yunion.io/x/onecloud/pkg/hostman/guestman/qemu"
@@ -1240,6 +1241,7 @@ type SGuestStreamDisksTask struct {
 
 	c          chan struct{}
 	streamDevs []string
+	lvmBacking []string
 }
 
 func NewGuestStreamDisksTask(ctx context.Context, guest *SKVMGuestInstance, callback func(), disksIdx []int) *SGuestStreamDisksTask {
@@ -1274,6 +1276,7 @@ func (s *SGuestStreamDisksTask) checkBlockDrives() {
 
 func (s *SGuestStreamDisksTask) onBlockDrivesSucc(blocks []monitor.QemuBlock) {
 	s.streamDevs = []string{}
+	s.lvmBacking = []string{}
 	for _, block := range blocks {
 		if len(block.Inserted.File) > 0 && len(block.Inserted.BackingFile) > 0 {
 			var stream = false
@@ -1286,10 +1289,17 @@ func (s *SGuestStreamDisksTask) onBlockDrivesSucc(blocks []monitor.QemuBlock) {
 			if !stream {
 				continue
 			}
+
 			s.streamDevs = append(s.streamDevs, block.Device)
+			disk, err := storageman.GetManager().GetDiskByPath(block.Inserted.File)
+			if err == nil && disk.GetType() == api.STORAGE_SLVM {
+				s.lvmBacking = append(s.lvmBacking, block.Inserted.BackingFile)
+			} else {
+				log.Errorf("failed get disk by path %s: %s", block.Inserted.File, err)
+			}
 		}
 	}
-	log.Infof("Stream devices %s: %v", s.GetName(), s.streamDevs)
+	log.Infof("Stream devices %s: %v , backingfiles %v", s.GetName(), s.streamDevs, s.lvmBacking)
 	if len(s.streamDevs) == 0 {
 		s.taskComplete()
 	} else {
@@ -1334,7 +1344,14 @@ func (s *SGuestStreamDisksTask) checkStreamJobs(jobs int) {
 	}
 }
 
+func (s *SGuestStreamDisksTask) deactivateLvmBackingFile() {
+	for _, lvPath := range s.lvmBacking {
+		storageman.TryDeactivateBackingLvs(lvPath)
+	}
+}
+
 func (s *SGuestStreamDisksTask) taskComplete() {
+	s.deactivateLvmBackingFile()
 	hostutils.UpdateServerProgress(context.Background(), s.Id, 100.0, 0.0)
 	s.SyncStatus("Guest Disks Block Stream Complete")
 
diff --git a/pkg/hostman/guestman/qemu-kvm.go b/pkg/hostman/guestman/qemu-kvm.go
index 632ce92e5a..bec1cb64a4 100644
--- a/pkg/hostman/guestman/qemu-kvm.go
+++ b/pkg/hostman/guestman/qemu-kvm.go
@@ -2211,7 +2211,7 @@ func (s *SKVMGuestInstance) ExecDeleteSnapshotTask(
 func (s *SKVMGuestInstance) deleteStaticSnapshotFile(
 	ctx context.Context, disk storageman.IDisk, deleteSnapshot, convertSnapshot string, blockStream bool,
 ) (jsonutils.JSONObject, error) {
-	if err := disk.DeleteSnapshot(deleteSnapshot, convertSnapshot); err != nil {
+	if err := disk.DeleteSnapshot(deleteSnapshot, convertSnapshot, blockStream); err != nil {
 		log.Errorln(err)
 		return nil, err
 	}
diff --git a/pkg/hostman/storageman/disk_base.go b/pkg/hostman/storageman/disk_base.go
index fbc7a17a82..cd8ec0a64b 100644
--- a/pkg/hostman/storageman/disk_base.go
+++ b/pkg/hostman/storageman/disk_base.go
@@ -60,14 +60,14 @@ type IDisk interface {
 	RebuildSlaveDisk(diskUri string) error
 	CreateFromUrl(ctx context.Context, url string, size int64, callback func(progress, progressMbps float64, totalSizeMb int64)) error
 	CreateFromTemplate(context.Context, string, string, int64, *apis.SEncryptInfo) (jsonutils.JSONObject, error)
-	CreateFromSnapshotLocation(ctx context.Context, location string, size int64, encryptInfo *apis.SEncryptInfo) error
+	CreateFromSnapshotLocation(ctx context.Context, location string, size int64, encryptInfo *apis.SEncryptInfo) (jsonutils.JSONObject, error)
 	CreateFromRbdSnapshot(ctx context.Context, snapshotId, srcDiskId, srcPool string) error
 	CreateFromImageFuse(ctx context.Context, url string, size int64, encryptInfo *apis.SEncryptInfo) error
 	CreateRaw(ctx context.Context, sizeMb int, diskFromat string, fsFormat string,
 		encryptInfo *apis.SEncryptInfo, diskId string, back string) (jsonutils.JSONObject, error)
 	PostCreateFromImageFuse()
 	CreateSnapshot(snapshotId string, encryptKey string, encFormat qemuimg.TEncryptFormat, encAlg seclib2.TSymEncAlg) error
-	DeleteSnapshot(snapshotId, convertSnapshot string) error
+	DeleteSnapshot(snapshotId, convertSnapshot string, blockStream bool) error
 	DeployGuestFs(diskInfo *deployapi.DiskInfo, guestDesc *jsonutils.JSONDict,
 		deployInfo *deployapi.DeployInfo) (jsonutils.JSONObject, error)
 	ConvertSnapshot(convertSnapshotId string) error
@@ -118,8 +118,8 @@ func (d *SBaseDisk) CreateFromTemplate(context.Context, string, string, int64, *
 	return nil, errors.Errorf("Not implemented")
 }
 
-func (d *SBaseDisk) CreateFromSnapshotLocation(ctx context.Context, location string, size int64, encryptInfo *apis.SEncryptInfo) error {
-	return errors.Errorf("Not implemented")
+func (d *SBaseDisk) CreateFromSnapshotLocation(ctx context.Context, location string, size int64, encryptInfo *apis.SEncryptInfo) (jsonutils.JSONObject, error) {
+	return nil, errors.Errorf("Not implemented")
 }
 
 func (d *SBaseDisk) CreateFromImageFuse(ctx context.Context, url string, size int64, encryptInfo *apis.SEncryptInfo) error {
diff --git a/pkg/hostman/storageman/disk_local.go b/pkg/hostman/storageman/disk_local.go
index c5bfe0b0e1..e02e1e2369 100644
--- a/pkg/hostman/storageman/disk_local.go
+++ b/pkg/hostman/storageman/disk_local.go
@@ -515,46 +515,9 @@ func (d *SLocalDisk) ConvertSnapshot(convertSnapshotId string) error {
 	return nil
 }
 
-func (d *SLocalDisk) DeleteSnapshot(snapshotId, convertSnapshot string) error {
+func (d *SLocalDisk) DeleteSnapshot(snapshotId, convertSnapshot string, blockStream bool) error {
 	snapshotDir := d.GetSnapshotDir()
-	snapshotPath := path.Join(snapshotDir, snapshotId)
-	if len(convertSnapshot) > 0 {
-		if !fileutils2.Exists(snapshotDir) {
-			err := procutils.NewCommand("mkdir", "-p", snapshotDir).Run()
-			if err != nil {
-				log.Errorln(err)
-				return err
-			}
-		}
-		convertSnapshotPath := path.Join(snapshotDir, convertSnapshot)
-		output := convertSnapshotPath + ".tmp"
-		if fileutils2.Exists(output) {
-			procutils.NewCommand("rm", "-f", output).Run()
-		}
-		img, err := qemuimg.NewQemuImage(convertSnapshotPath)
-		if err != nil {
-			return errors.Wrap(err, "NewQemuImage")
-		}
-		if err = img.Convert2Qcow2To(output, false, "", "", ""); err != nil {
-			log.Errorf("convert image %s to %s: %s", img.Path, output, err)
-			procutils.NewCommand("rm", "-f", output).Run()
-			return err
-		}
-		if err = procutils.NewCommand("rm", "-f", convertSnapshotPath).Run(); err != nil {
-			log.Errorf("rm convert snapshot file %s: %s", convertSnapshotPath, err)
-			return err
-		}
-		if err = procutils.NewCommand("mv", "-f", output, convertSnapshotPath).Run(); err != nil {
-			log.Errorf("mv snapshot file %s to %s: %s", output, convertSnapshotPath, err)
-			return err
-		}
-	}
-	err := procutils.NewCommand("rm", "-f", snapshotPath).Run()
-	if err != nil {
-		log.Errorf("rm snapshot file: %s", err)
-		return errors.Wrap(err, "rm snapshot file")
-	}
-	return nil
+	return DeleteLocalSnapshot(snapshotDir, snapshotId, d.getPath(), convertSnapshot, blockStream)
 }
 
 func (d *SLocalDisk) PrepareSaveToGlance(ctx context.Context, params interface{}) (jsonutils.JSONObject, error) {
diff --git a/pkg/hostman/storageman/disk_lvm.go b/pkg/hostman/storageman/disk_lvm.go
index 322487ed1f..9e5d890750 100644
--- a/pkg/hostman/storageman/disk_lvm.go
+++ b/pkg/hostman/storageman/disk_lvm.go
@@ -74,7 +74,7 @@ func (d *SLVMDisk) GetPath() string {
 
 // The LVM logical volume name is limited to 64 characters.
 func (d *SLVMDisk) GetSnapshotName(snapshotId string) string {
-	return "snap_" + d.Id + "_" + snapshotId
+	return "snap_" + snapshotId
 }
 
 func (d *SLVMDisk) GetSnapshotPath(snapshotId string) string {
@@ -408,20 +408,31 @@ func (d *SLVMDisk) CreateSnapshot(snapshotId string, encryptKey string, encForma
 		return err
 	}
 	if err := lvmutils.LvCreate(d.Storage.GetPath(), d.Id, lvSize); err != nil {
+		if e := lvmutils.LvRename(d.Storage.GetPath(), snapName, d.Id); e != nil {
+			log.Errorf("failed rename lv %s to %s: %s", snapName, d.GetPath(), e)
+		}
 		return errors.Wrap(err, "snapshot LvCreate")
 	}
 	img, err := qemuimg.NewQemuImage(d.GetPath())
 	if err != nil {
-		lvmutils.LvRemove(d.GetPath())
-		lvmutils.LvRename(d.Storage.GetPath(), snapName, d.Id)
+		if e := lvmutils.LvRemove(d.GetPath()); e != nil {
+			log.Errorf("failed remove lv %s: %s", d.GetPath(), e)
+		}
+		if e := lvmutils.LvRename(d.Storage.GetPath(), snapName, d.Id); e != nil {
+			log.Errorf("failed rename lv %s to %s: %s", snapName, d.GetPath(), e)
+		}
 		return errors.Wrapf(err, "failed qemuimg.NewQemuImage(%s))", d.GetPath())
 	}
 
 	snapPath := d.GetSnapshotPath(snapshotId)
 	err = img.CreateQcow2(0, false, snapPath, "", "", "")
 	if err != nil {
-		lvmutils.LvRemove(d.GetPath())
-		lvmutils.LvRename(d.Storage.GetPath(), snapName, d.Id)
+		if e := lvmutils.LvRemove(d.GetPath()); e != nil {
+			log.Errorf("failed remove lv %s: %s", d.GetPath(), e)
+		}
+		if e := lvmutils.LvRename(d.Storage.GetPath(), snapName, d.Id); e != nil {
+			log.Errorf("failed rename lv %s to %s: %s", snapName, d.GetPath(), e)
+		}
 		return errors.Wrapf(err, "CreateQcow2(%s)", snapPath)
 	}
 	return nil
@@ -475,8 +486,12 @@ func (d *SLVMDisk) ResetFromSnapshot(ctx context.Context, params interface{}) (j
 	return nil, nil
 }
 
-func (d *SLVMDisk) DeleteSnapshot(snapshotId, convertSnapshot string) error {
-	if len(convertSnapshot) > 0 {
+func (d *SLVMDisk) DeleteSnapshot(snapshotId, convertSnapshot string, blockStream bool) error {
+	if blockStream {
+		if err := ConvertLVMDisk(d.Storage.GetPath(), d.Id); err != nil {
+			return err
+		}
+	} else if len(convertSnapshot) > 0 {
 		if err := d.ConvertSnapshot(convertSnapshot); err != nil {
 			return err
 		}
@@ -503,59 +518,8 @@ func (d *SLVMDisk) DeleteAllSnapshot(skipRecycle bool) error {
 }
 
 func (d *SLVMDisk) ConvertSnapshot(convertSnapshot string) error {
-	convertSnapshotPath := d.GetSnapshotPath(convertSnapshot)
-	qemuImg, err := qemuimg.NewQemuImage(convertSnapshotPath)
-	if err != nil {
-		log.Errorln(err)
-		return err
-	}
-	lvSize, err := lvmutils.GetLvSize(convertSnapshotPath)
-	if err != nil {
-		return err
-	}
-
-	tmpVolume := d.Id + "-convert.tmp"
-	tmpVolumePath := path.Join("/dev", d.Storage.GetPath(), tmpVolume)
-	// create /dev/vg/snapshot-convert.tmp
-	if err := lvmutils.LvCreate(d.Storage.GetPath(), d.Id, lvSize); err != nil {
-		return errors.Wrap(err, "delete snapshot LvCreate")
-	}
-	srcInfo := qemuimg.SImageInfo{
-		Path:     convertSnapshotPath,
-		Format:   qemuImg.Format,
-		IoLevel:  qemuimg.IONiceNone,
-		Password: "",
-	}
-	destInfo := qemuimg.SImageInfo{
-		Path:     tmpVolumePath,
-		Format:   qemuimg.QCOW2,
-		IoLevel:  qemuimg.IONiceNone,
-		Password: "",
-	}
-	// convert /dev/vg/snapshot to /dev/vg/snapshot-convert.tmp
-	if err = qemuimg.Convert(srcInfo, destInfo, false, nil); err != nil {
-		lvmutils.LvRemove(tmpVolumePath)
-		return errors.Wrap(err, "failed convert tmp disk")
-	}
-
-	tmpVolume2 := d.Id + "-convert.tmp2"
-	tmpVolume2Path := path.Join("/dev", d.Storage.GetPath(), tmpVolume2)
-	// rename /dev/vg/snapshot to /dev/vg/snapshot-convert.tmp2
-	err = lvmutils.LvRename(d.Storage.GetPath(), convertSnapshot, tmpVolume2)
-	if err != nil {
-		return errors.Wrap(err, "failed rename disk to tmp")
-	}
-	// rename /dev/vg/snapshot-convert.tmp to /dev/vg/snapshot
-	err = lvmutils.LvRename(d.Storage.GetPath(), tmpVolume, convertSnapshot)
-	if err != nil {
-		return errors.Wrap(err, "failed rename tmp to disk")
-	}
-	// delete /dev/vg/snapshot-convert.tmp2
-	err = lvmutils.LvRemove(tmpVolume2Path)
-	if err != nil {
-		return errors.Wrap(err, "failed remove tmp disk")
-	}
-	return nil
+	convertSnapshotName := d.GetSnapshotName(convertSnapshot)
+	return ConvertLVMDisk(d.Storage.GetPath(), convertSnapshotName)
 }
 
 func (d *SLVMDisk) DoDeleteSnapshot(snapshotId string) error {
diff --git a/pkg/hostman/storageman/disk_nas.go b/pkg/hostman/storageman/disk_nas.go
index 3c4df1aad3..e7111d9a97 100644
--- a/pkg/hostman/storageman/disk_nas.go
+++ b/pkg/hostman/storageman/disk_nas.go
@@ -48,16 +48,16 @@ func (d *SNasDisk) CreateFromImageFuse(ctx context.Context, url string, size int
 	return fmt.Errorf("Not implemented")
 }
 
-func (d *SNasDisk) CreateFromSnapshotLocation(ctx context.Context, snapshotLocation string, size int64, encryptInfo *apis.SEncryptInfo) error {
+func (d *SNasDisk) CreateFromSnapshotLocation(ctx context.Context, snapshotLocation string, size int64, encryptInfo *apis.SEncryptInfo) (jsonutils.JSONObject, error) {
 	snapshotPath := path.Join(d.Storage.GetPath(), snapshotLocation)
 	newImg, err := qemuimg.NewQemuImage(d.GetPath())
 	if err != nil {
-		return errors.Wrap(err, "new image from snapshot")
+		return nil, errors.Wrap(err, "new image from snapshot")
 	}
 	if newImg.IsValid() {
 		if err := newImg.Delete(); err != nil {
 			log.Errorln(err)
-			return err
+			return nil, err
 		}
 	}
 	if encryptInfo != nil {
@@ -66,7 +66,7 @@ func (d *SNasDisk) CreateFromSnapshotLocation(ctx context.Context, snapshotLocat
 		err = newImg.CreateQcow2(0, false, snapshotPath, "", "", "")
 	}
 	if err != nil {
-		return errors.Wrap(err, "create image from snapshot")
+		return nil, errors.Wrap(err, "create image from snapshot")
 	}
 	retSize, _ := d.GetDiskDesc().Int("disk_size")
 	log.Infof("REQSIZE: %d, RETSIZE: %d", size, retSize)
@@ -77,9 +77,9 @@ func (d *SNasDisk) CreateFromSnapshotLocation(ctx context.Context, snapshotLocat
 			params.Set("encrypt_info", jsonutils.Marshal(encryptInfo))
 		}
 		_, err = d.Resize(ctx, params)
-		return err
+		return nil, err
 	}
-	return nil
+	return d.GetDiskDesc(), nil
 }
 
 func (d *SNasDisk) ResetFromSnapshot(ctx context.Context, params interface{}) (jsonutils.JSONObject, error) {
diff --git a/pkg/hostman/storageman/disk_rbd.go b/pkg/hostman/storageman/disk_rbd.go
index 396dfe458d..7ae143b342 100644
--- a/pkg/hostman/storageman/disk_rbd.go
+++ b/pkg/hostman/storageman/disk_rbd.go
@@ -263,7 +263,7 @@ func (d *SRBDDisk) ConvertSnapshot(convertSnapshotId string) error {
 	return nil
 }
 
-func (d *SRBDDisk) DeleteSnapshot(snapshotId, convertSnapshot string) error {
+func (d *SRBDDisk) DeleteSnapshot(snapshotId, convertSnapshot string, blockStream bool) error {
 	storage := d.Storage.(*SRbdStorage)
 	pool, _ := storage.StorageConf.GetString("pool")
 	return storage.deleteSnapshot(pool, d.Id, snapshotId)
@@ -282,7 +282,7 @@ func (d *SRBDDisk) DiskDeleteSnapshot(ctx context.Context, params interface{}) (
 	if !ok {
 		return nil, hostutils.ParamsError
 	}
-	err := d.DeleteSnapshot(snapshotId, "")
+	err := d.DeleteSnapshot(snapshotId, "", false)
 	if err != nil {
 		return nil, err
 	} else {
diff --git a/pkg/hostman/storageman/disk_slvm.go b/pkg/hostman/storageman/disk_slvm.go
index fa59cd3c2f..18ac764298 100644
--- a/pkg/hostman/storageman/disk_slvm.go
+++ b/pkg/hostman/storageman/disk_slvm.go
@@ -56,29 +56,27 @@ func (d *SSLVMDisk) Probe() error {
 	}
 
 	var lvPath = d.GetPath()
-	activated, err := lvmutils.LvIsActivated(lvPath)
-	if err != nil {
-		return errors.Wrap(err, "check lv is activated")
-	}
-	if !activated {
-		if err := lvmutils.LVActive(lvPath, d.Storage.Lvmlockd(), false); err != nil {
-			return errors.Wrap(err, "lv active")
-		}
+	if err := lvmutils.LVActive(lvPath, d.Storage.Lvmlockd(), false); err != nil {
+		return errors.Wrap(err, "lv active")
 	}
 
-	qemuImg, err := qemuimg.NewQemuImage(d.GetPath())
-	if err != nil {
-		log.Errorln(err)
-		return err
-	}
-	if qemuImg.BackFilePath != "" {
-		originActivated, err := lvmutils.LvIsActivated(qemuImg.BackFilePath)
+	diskPath := d.GetPath()
+	for diskPath != "" {
+		qemuImg, err := qemuimg.NewQemuImage(diskPath)
 		if err != nil {
-			return errors.Wrap(err, "check lv is activated")
+			log.Errorln(err)
+			return err
 		}
-		if !originActivated {
-			if err = lvmutils.LVActive(qemuImg.BackFilePath, d.Storage.Lvmlockd(), false); err != nil {
-				return errors.Wrap(err, "lv active origin")
+		diskPath = qemuImg.BackFilePath
+		if qemuImg.BackFilePath != "" {
+			originActivated, err := lvmutils.LvIsActivated(qemuImg.BackFilePath)
+			if err != nil {
+				return errors.Wrap(err, "check lv is activated")
+			}
+			if !originActivated {
+				if err = lvmutils.LVActive(qemuImg.BackFilePath, d.Storage.Lvmlockd(), false); err != nil {
+					return errors.Wrap(err, "lv active origin")
+				}
 			}
 		}
 	}
@@ -93,13 +91,23 @@ func (d *SSLVMDisk) CreateRaw(
 	ctx context.Context, sizeMb int, diskFormat string, fsFormat string,
 	encryptInfo *apis.SEncryptInfo, diskId string, back string,
 ) (jsonutils.JSONObject, error) {
+	if fileutils2.Exists(d.GetPath()) {
+		err := lvmutils.LVDeactivate(d.GetPath())
+		if err != nil {
+			return nil, errors.Wrap(err, "LVDeactivate")
+		}
+		if err := lvmutils.LvRemove(d.GetLvPath()); err != nil {
+			return nil, errors.Wrap(err, "CreateRaw lvremove")
+		}
+	}
 	ret, err := d.SLVMDisk.CreateRaw(ctx, sizeMb, diskFormat, fsFormat, encryptInfo, diskId, back)
 	if err != nil {
 		return ret, err
 	}
-	err = lvmutils.LVActive(d.GetPath(), d.Storage.Lvmlockd(), false)
+
+	err = lvmutils.LVDeactivate(d.GetPath())
 	if err != nil {
-		return ret, errors.Wrap(err, "lvactive shared")
+		return ret, errors.Wrap(err, "LVDeactivate")
 	}
 	return ret, nil
 }
@@ -107,13 +115,23 @@ func (d *SSLVMDisk) CreateRaw(
 func (d *SSLVMDisk) CreateFromTemplate(
 	ctx context.Context, imageId, format string, sizeMb int64, encryptInfo *apis.SEncryptInfo,
 ) (jsonutils.JSONObject, error) {
+	if fileutils2.Exists(d.GetPath()) {
+		err := lvmutils.LVDeactivate(d.GetPath())
+		if err != nil {
+			return nil, errors.Wrap(err, "LVDeactivate")
+		}
+		if err := lvmutils.LvRemove(d.GetLvPath()); err != nil {
+			return nil, errors.Wrap(err, "CreateRaw lvremove")
+		}
+	}
+
 	ret, err := d.SLVMDisk.CreateFromTemplate(ctx, imageId, format, sizeMb, encryptInfo)
 	if err != nil {
 		return ret, err
 	}
-	err = lvmutils.LVActive(d.GetPath(), d.Storage.Lvmlockd(), false)
+	err = lvmutils.LVDeactivate(d.GetPath())
 	if err != nil {
-		return ret, errors.Wrap(err, "lvactive shared")
+		return ret, errors.Wrap(err, "LVDeactivate")
 	}
 	return ret, nil
 }
@@ -122,7 +140,7 @@ func (d *SSLVMDisk) PreResize(ctx context.Context, sizeMb int64) error {
 	if ok, err := lvmutils.LvIsActivated(d.GetPath()); err != nil {
 		return err
 	} else if ok && d.Storage.Lvmlockd() {
-		err = lvmutils.LVActive(d.GetPath(), false, true)
+		err = lvmutils.LVActive(d.GetPath(), false, d.Storage.Lvmlockd())
 		if err != nil {
 			return errors.Wrap(err, "lvactive shared")
 		}
@@ -142,7 +160,7 @@ func (d *SSLVMDisk) Resize(ctx context.Context, params interface{}) (jsonutils.J
 	if ok, err := lvmutils.LvIsActivated(d.GetPath()); err != nil {
 		return nil, err
 	} else if ok && d.Storage.Lvmlockd() {
-		err = lvmutils.LVActive(d.GetPath(), false, true)
+		err = lvmutils.LVActive(d.GetPath(), false, d.Storage.Lvmlockd())
 		if err != nil {
 			return nil, errors.Wrap(err, "lvactive shared")
 		}
@@ -158,6 +176,23 @@ func (d *SSLVMDisk) Resize(ctx context.Context, params interface{}) (jsonutils.J
 	return ret, nil
 }
 
+func TryDeactivateBackingLvs(backingFile string) {
+	if backingFile == "" {
+		return
+	}
+	qemuImg, err := qemuimg.NewQemuImage(backingFile)
+	if err != nil {
+		log.Errorf("tryDeactivateBackingLvs NewQemuImage %s", err)
+		return
+	}
+	err = lvmutils.LVDeactivate(backingFile)
+	if err != nil {
+		log.Errorf("tryDeactivateBackingLvs LVDeactivate %s", err)
+		return
+	}
+	TryDeactivateBackingLvs(qemuImg.BackFilePath)
+}
+
 func (d *SSLVMDisk) Delete(ctx context.Context, params interface{}) (jsonutils.JSONObject, error) {
 	var lvPath = d.GetPath()
 	activated, err := lvmutils.LvIsActivated(lvPath)
@@ -169,38 +204,56 @@ func (d *SSLVMDisk) Delete(ctx context.Context, params interface{}) (jsonutils.J
 			return nil, errors.Wrap(err, "lv active")
 		}
 	}
+	qemuImg, err := qemuimg.NewQemuImage(lvPath)
+	if err != nil {
+		return nil, errors.Wrap(err, "NewQemuImage")
+	}
+	TryDeactivateBackingLvs(qemuImg.BackFilePath)
+
 	return d.SLVMDisk.Delete(ctx, params)
 }
 
 func (d *SSLVMDisk) CreateSnapshot(snapshotId string, encryptKey string, encFormat qemuimg.TEncryptFormat, encAlg seclib2.TSymEncAlg) error {
-	err := lvmutils.LVActive(d.GetPath(), false, true)
+	err := lvmutils.LVActive(d.GetPath(), false, d.Storage.Lvmlockd())
 	if err != nil {
 		return errors.Wrap(err, "lvactive exclusive")
 	}
 	err = d.SLVMDisk.CreateSnapshot(snapshotId, encryptKey, encFormat, encAlg)
 	if err != nil {
-		err := lvmutils.LVActive(d.GetPath(), true, false)
-		if err != nil {
-			log.Errorf("failed lvactive share %s", err)
+		e3 := lvmutils.LVActive(d.GetPath(), d.Storage.Lvmlockd(), false)
+		if e3 != nil {
+			log.Errorf("failed lvactive share %s", e3)
 		}
 		return err
 	}
+
+	// active disk share mode
+	err = lvmutils.LVActive(d.GetPath(), d.Storage.Lvmlockd(), false)
+	if err != nil {
+		return errors.Wrap(err, "lvactive snapshot share")
+	}
+
+	// active snapshot active mode
 	snapPath := d.GetSnapshotPath(snapshotId)
-	err = lvmutils.LVActive(snapPath, false, true)
+	err = lvmutils.LVActive(snapPath, d.Storage.Lvmlockd(), false)
 	if err != nil {
 		return errors.Wrap(err, "lvactive snapshot share")
 	}
 	return nil
 }
 
+func (d *SSLVMDisk) PostCreateFromImageFuse() {
+	log.Infof("slvm post create from fuse do nothing")
+}
+
 func (d *SSLVMDisk) ResetFromSnapshot(ctx context.Context, params interface{}) (jsonutils.JSONObject, error) {
-	err := lvmutils.LVActive(d.GetPath(), false, true)
+	err := lvmutils.LVActive(d.GetPath(), false, d.Storage.Lvmlockd())
 	if err != nil {
 		return nil, errors.Wrap(err, "lvactive exclusive")
 	}
 	ret, err := d.SLVMDisk.ResetFromSnapshot(ctx, params)
 	if err != nil {
-		err := lvmutils.LVActive(d.GetPath(), true, false)
+		err := lvmutils.LVActive(d.GetPath(), d.Storage.Lvmlockd(), false)
 		if err != nil {
 			log.Errorf("failed lvactive share %s", err)
 		}
@@ -208,3 +261,22 @@ func (d *SSLVMDisk) ResetFromSnapshot(ctx context.Context, params interface{}) (
 	}
 	return ret, nil
 }
+
+func (d *SSLVMDisk) CreateFromSnapshotLocation(ctx context.Context, snapshotLocation string, size int64, encryptInfo *apis.SEncryptInfo) (jsonutils.JSONObject, error) {
+	ret, err := d.SLVMDisk.CreateRaw(ctx, int(size), "", "", encryptInfo, d.Id, snapshotLocation)
+	if err != nil {
+		return nil, err
+	}
+
+	qemuImg, err := qemuimg.NewQemuImage(d.GetPath())
+	if err != nil {
+		return nil, errors.Wrap(err, "NewQemuImage")
+	}
+	TryDeactivateBackingLvs(qemuImg.BackFilePath)
+
+	err = lvmutils.LVDeactivate(d.GetPath())
+	if err != nil {
+		return nil, errors.Wrap(err, "LVDeactivate")
+	}
+	return ret, nil
+}
diff --git a/pkg/hostman/storageman/storage_base.go b/pkg/hostman/storageman/storage_base.go
index 851dde036f..839de721bd 100644
--- a/pkg/hostman/storageman/storage_base.go
+++ b/pkg/hostman/storageman/storage_base.go
@@ -98,6 +98,7 @@ type IStorage interface {
 
 	GetSnapshotDir() string
 	GetSnapshotPathByIds(diskId, snapshotId string) string
+	DeleteSnapshot(ctx context.Context, params interface{}) (jsonutils.JSONObject, error)
 	DeleteSnapshots(ctx context.Context, params interface{}) (jsonutils.JSONObject, error)
 	IsSnapshotExist(diskId, snapshotId string) (bool, error)
 
@@ -118,7 +119,7 @@ type IStorage interface {
 	// *SDiskCreateByDiskinfo
 	CreateDiskByDiskinfo(context.Context, interface{}) (jsonutils.JSONObject, error)
 	SaveToGlance(context.Context, interface{}) (jsonutils.JSONObject, error)
-	CreateDiskFromSnapshot(context.Context, IDisk, *SDiskCreateByDiskinfo) error
+	CreateDiskFromSnapshot(context.Context, IDisk, *SDiskCreateByDiskinfo) (jsonutils.JSONObject, error)
 	CreateDiskFromExistingPath(context.Context, IDisk, *SDiskCreateByDiskinfo) error
 	CreateDiskFromBackup(context.Context, IDisk, *SDiskCreateByDiskinfo) error
 
@@ -398,12 +399,7 @@ func (s *SBaseStorage) CreateDiskFromSnpashot(ctx context.Context, disk IDisk, i
 		return nil, httperrors.NewMissingParameterError("snapshot_url")
 	}
 
-	err := storage.CreateDiskFromSnapshot(ctx, disk, input)
-	if err != nil {
-		return nil, errors.Wrapf(err, "CreateDiskFromSnapshot")
-	}
-
-	return disk.GetDiskDesc(), nil
+	return storage.CreateDiskFromSnapshot(ctx, disk, input)
 }
 
 func (s *SBaseStorage) createDiskFromExistingPath(ctx context.Context, disk IDisk, input *SDiskCreateByDiskinfo) (jsonutils.JSONObject, error) {
diff --git a/pkg/hostman/storageman/storage_local.go b/pkg/hostman/storageman/storage_local.go
index 2ef11ddd11..aa41fa6b3b 100644
--- a/pkg/hostman/storageman/storage_local.go
+++ b/pkg/hostman/storageman/storage_local.go
@@ -543,11 +543,11 @@ func (s *SLocalStorage) CreateSnapshotFormUrl(
 }
 
 func (s *SLocalStorage) DeleteSnapshots(ctx context.Context, params interface{}) (jsonutils.JSONObject, error) {
-	diskId, ok := params.(string)
+	input, ok := params.(SStorageDeleteSnapshots)
 	if !ok {
 		return nil, hostutils.ParamsError
 	}
-	snapshotDir := path.Join(s.GetSnapshotDir(), diskId+options.HostOptions.SnapshotDirSuffix)
+	snapshotDir := path.Join(s.GetSnapshotDir(), input.DiskId+options.HostOptions.SnapshotDirSuffix)
 	output, err := procutils.NewCommand("rm", "-rf", snapshotDir).Output()
 	if err != nil {
 		return nil, fmt.Errorf("Delete snapshot dir failed: %s", output)
@@ -555,6 +555,82 @@ func (s *SLocalStorage) DeleteSnapshots(ctx context.Context, params interface{})
 	return nil, nil
 }
 
+func (s *SLocalStorage) DeleteSnapshot(ctx context.Context, params interface{}) (jsonutils.JSONObject, error) {
+	input, ok := params.(SStorageDeleteSnapshot)
+	if !ok {
+		return nil, hostutils.ParamsError
+	}
+
+	snapshotDir := path.Join(s.GetSnapshotDir(), input.DiskId+options.HostOptions.SnapshotDirSuffix)
+	diskPath := path.Join(s.GetPath(), input.DiskId)
+	return nil, DeleteLocalSnapshot(snapshotDir, input.SnapshotId, diskPath, input.ConvertSnapshot, input.BlockStream)
+}
+
+func DeleteLocalSnapshot(snapshotDir, snapshotId, diskPath, convertSnapshot string, blockStream bool) error {
+	//snapshotDir := d.GetSnapshotDir()
+	snapshotPath := path.Join(snapshotDir, snapshotId)
+	if blockStream {
+		//diskPath := d.getPath()
+		output := diskPath + ".tmp"
+		if fileutils2.Exists(output) {
+			procutils.NewCommand("rm", "-f", output).Run()
+		}
+		img, err := qemuimg.NewQemuImage(diskPath)
+		if err != nil {
+			return errors.Wrap(err, "NewQemuImage")
+		}
+		if err = img.Convert2Qcow2To(output, false, "", "", ""); err != nil {
+			log.Errorf("convert image %s to %s: %s", img.Path, output, err)
+			procutils.NewCommand("rm", "-f", output).Run()
+			return err
+		}
+		if err = procutils.NewCommand("rm", "-f", diskPath).Run(); err != nil {
+			log.Errorf("rm convert disk file %s: %s", diskPath, err)
+			return err
+		}
+		if err = procutils.NewCommand("mv", "-f", output, diskPath).Run(); err != nil {
+			log.Errorf("mv disk file %s to %s: %s", output, diskPath, err)
+			return err
+		}
+	} else if len(convertSnapshot) > 0 {
+		if !fileutils2.Exists(snapshotDir) {
+			err := procutils.NewCommand("mkdir", "-p", snapshotDir).Run()
+			if err != nil {
+				log.Errorln(err)
+				return err
+			}
+		}
+		convertSnapshotPath := path.Join(snapshotDir, convertSnapshot)
+		output := convertSnapshotPath + ".tmp"
+		if fileutils2.Exists(output) {
+			procutils.NewCommand("rm", "-f", output).Run()
+		}
+		img, err := qemuimg.NewQemuImage(convertSnapshotPath)
+		if err != nil {
+			return errors.Wrap(err, "NewQemuImage")
+		}
+		if err = img.Convert2Qcow2To(output, false, "", "", ""); err != nil {
+			log.Errorf("convert image %s to %s: %s", img.Path, output, err)
+			procutils.NewCommand("rm", "-f", output).Run()
+			return err
+		}
+		if err = procutils.NewCommand("rm", "-f", convertSnapshotPath).Run(); err != nil {
+			log.Errorf("rm convert snapshot file %s: %s", convertSnapshotPath, err)
+			return err
+		}
+		if err = procutils.NewCommand("mv", "-f", output, convertSnapshotPath).Run(); err != nil {
+			log.Errorf("mv snapshot file %s to %s: %s", output, convertSnapshotPath, err)
+			return err
+		}
+	}
+	err := procutils.NewCommand("rm", "-f", snapshotPath).Run()
+	if err != nil {
+		log.Errorf("rm snapshot file: %s", err)
+		return errors.Wrap(err, "rm snapshot file")
+	}
+	return nil
+}
+
 func (s *SLocalStorage) DestinationPrepareMigrate(
 	ctx context.Context, liveMigrate bool, disksUri string, snapshotsUri string,
 	disksBackingFile, diskSnapsChain, outChainSnaps jsonutils.JSONObject,
@@ -696,9 +772,7 @@ func doRebaseDisk(diskPath, newBasePath string, encInfo *apis.SEncryptInfo) erro
 	return nil
 }
 
-func (s *SLocalStorage) CreateDiskFromSnapshot(
-	ctx context.Context, disk IDisk, input *SDiskCreateByDiskinfo,
-) error {
+func (s *SLocalStorage) CreateDiskFromSnapshot(ctx context.Context, disk IDisk, input *SDiskCreateByDiskinfo) (jsonutils.JSONObject, error) {
 	info := input.DiskInfo
 	if info.Protocol == "fuse" {
 		var encryptInfo *apis.SEncryptInfo
@@ -707,11 +781,11 @@ func (s *SLocalStorage) CreateDiskFromSnapshot(
 		}
 		err := disk.CreateFromImageFuse(ctx, info.SnapshotUrl, int64(info.DiskSizeMb), encryptInfo)
 		if err != nil {
-			return errors.Wrapf(err, "CreateFromImageFuse")
+			return nil, errors.Wrapf(err, "CreateFromImageFuse")
 		}
-		return nil
+		return disk.GetDiskDesc(), nil
 	}
-	return httperrors.NewUnsupportOperationError("Unsupport protocol %s for Local storage", info.Protocol)
+	return nil, httperrors.NewUnsupportOperationError("Unsupport protocol %s for Local storage", info.Protocol)
 }
 
 func (s *SLocalStorage) CreateDiskFromExistingPath(
diff --git a/pkg/hostman/storageman/storage_lvm.go b/pkg/hostman/storageman/storage_lvm.go
index f974164ae1..23e929f7d1 100644
--- a/pkg/hostman/storageman/storage_lvm.go
+++ b/pkg/hostman/storageman/storage_lvm.go
@@ -186,7 +186,33 @@ func (s *SLVMStorage) GetSnapshotPathByIds(diskId, snapshotId string) string {
 }
 
 func (s *SLVMStorage) DeleteSnapshots(ctx context.Context, params interface{}) (jsonutils.JSONObject, error) {
-	return nil, errors.Errorf("unsupported operation")
+	input := params.(SStorageDeleteSnapshots)
+	for i := range input.SnapshotIds {
+		lvPath := path.Join("/dev", s.GetPath(), "snap_"+input.SnapshotIds[i])
+		if err := lvmutils.LvRemove(lvPath); err != nil {
+			return nil, err
+		}
+	}
+	return nil, nil
+}
+
+func (s *SLVMStorage) DeleteSnapshot(ctx context.Context, params interface{}) (jsonutils.JSONObject, error) {
+	input, ok := params.(SStorageDeleteSnapshot)
+	if !ok {
+		return nil, hostutils.ParamsError
+	}
+	if input.BlockStream {
+		if err := ConvertLVMDisk(s.GetPath(), input.DiskId); err != nil {
+			return nil, err
+		}
+	} else if len(input.ConvertSnapshot) > 0 {
+		convertSnapshotName := "snap_" + input.ConvertSnapshot
+		if err := ConvertLVMDisk(s.GetPath(), convertSnapshotName); err != nil {
+			return nil, err
+		}
+	}
+	snapId := path.Join("/dev", s.GetPath(), input.SnapshotId)
+	return nil, lvmutils.LvRemove(snapId)
 }
 
 func (s *SLVMStorage) IsSnapshotExist(diskId, snapshotId string) (bool, error) {
@@ -426,7 +452,7 @@ func (s *SLVMStorage) DestinationPrepareMigrate(
 	return nil
 }
 
-func (s *SLVMStorage) CreateDiskFromSnapshot(ctx context.Context, disk IDisk, input *SDiskCreateByDiskinfo) error {
+func (s *SLVMStorage) CreateDiskFromSnapshot(ctx context.Context, disk IDisk, input *SDiskCreateByDiskinfo) (jsonutils.JSONObject, error) {
 	info := input.DiskInfo
 	if info.Protocol == "fuse" {
 		var encryptInfo *apis.SEncryptInfo
@@ -435,11 +461,11 @@ func (s *SLVMStorage) CreateDiskFromSnapshot(ctx context.Context, disk IDisk, in
 		}
 		err := disk.CreateFromImageFuse(ctx, info.SnapshotUrl, int64(info.DiskSizeMb), encryptInfo)
 		if err != nil {
-			return errors.Wrapf(err, "CreateFromImageFuse")
+			return nil, errors.Wrapf(err, "CreateFromImageFuse")
 		}
-		return nil
+		return disk.GetDiskDesc(), nil
 	}
-	return httperrors.NewUnsupportOperationError("Unsupport protocol %s for lvm storage", info.Protocol)
+	return nil, httperrors.NewUnsupportOperationError("Unsupport protocol %s for lvm storage", info.Protocol)
 }
 
 func (s *SLVMStorage) CreateDiskFromExistingPath(context.Context, IDisk, *SDiskCreateByDiskinfo) error {
@@ -526,3 +552,58 @@ func (s *SLVMStorage) CloneDiskFromStorage(
 		TargetFormat:     qemuimg.QCOW2.String(),
 	}, nil
 }
+
+func ConvertLVMDisk(vgName, lvName string) error {
+	diskPath := path.Join("/dev", vgName, lvName)
+	qemuImg, err := qemuimg.NewQemuImage(diskPath)
+	if err != nil {
+		log.Errorln(err)
+		return err
+	}
+	lvSize, err := lvmutils.GetLvSize(diskPath)
+	if err != nil {
+		return err
+	}
+
+	tmpVolume := lvName + "-convert.tmp"
+	tmpVolumePath := path.Join("/dev", vgName, tmpVolume)
+	// create /dev/vg/disk-convert.tmp
+	if err := lvmutils.LvCreate(vgName, tmpVolume, lvSize); err != nil {
+		return errors.Wrap(err, "delete snapshot LvCreate")
+	}
+	srcInfo := qemuimg.SImageInfo{
+		Path:     diskPath,
+		Format:   qemuImg.Format,
+		IoLevel:  qemuimg.IONiceNone,
+		Password: "",
+	}
+	destInfo := qemuimg.SImageInfo{
+		Path:     tmpVolumePath,
+		Format:   qemuimg.QCOW2,
+		IoLevel:  qemuimg.IONiceNone,
+		Password: "",
+	}
+	// convert /dev/vg/disk to /dev/vg/disk-convert.tmp
+	if err = qemuimg.Convert(srcInfo, destInfo, false, nil); err != nil {
+		lvmutils.LvRemove(tmpVolumePath)
+		return errors.Wrap(err, "failed convert tmp disk")
+	}
+	tmpVolume2 := lvName + "-convert.tmp2"
+	tmpVolume2Path := path.Join("/dev", vgName, tmpVolume2)
+	// rename /dev/vg/disk to /dev/vg/disk-convert.tmp2
+	err = lvmutils.LvRename(vgName, diskPath, tmpVolume2)
+	if err != nil {
+		return errors.Wrap(err, "failed rename disk to tmp")
+	}
+	// rename /dev/vg/disk-convert.tmp to /dev/vg/disk
+	err = lvmutils.LvRename(vgName, tmpVolume, diskPath)
+	if err != nil {
+		return errors.Wrap(err, "failed rename tmp to disk")
+	}
+	// delete /dev/vg/disk-convert.tmp2
+	err = lvmutils.LvRemove(tmpVolume2Path)
+	if err != nil {
+		return errors.Wrap(err, "failed remove tmp disk")
+	}
+	return nil
+}
diff --git a/pkg/hostman/storageman/storage_nas.go b/pkg/hostman/storageman/storage_nas.go
index c21928e80e..77b871d618 100644
--- a/pkg/hostman/storageman/storage_nas.go
+++ b/pkg/hostman/storageman/storage_nas.go
@@ -94,11 +94,12 @@ func (s *SNasStorage) SyncStorageInfo() (jsonutils.JSONObject, error) {
 	return res, err
 }
 
-func (s *SNasStorage) CreateDiskFromSnapshot(ctx context.Context, disk IDisk, input *SDiskCreateByDiskinfo) error {
+func (s *SNasStorage) CreateDiskFromSnapshot(ctx context.Context, disk IDisk, input *SDiskCreateByDiskinfo) (jsonutils.JSONObject, error) {
 	info := input.DiskInfo
 	var encryptInfo *apis.SEncryptInfo
 	if info.Encryption {
 		encryptInfo = &info.EncryptInfo
 	}
+
 	return disk.CreateFromSnapshotLocation(ctx, input.DiskInfo.SnapshotUrl, int64(input.DiskInfo.DiskSizeMb), encryptInfo)
 }
diff --git a/pkg/hostman/storageman/storage_rbd.go b/pkg/hostman/storageman/storage_rbd.go
index 47f6e7c23a..9025cf7cbb 100644
--- a/pkg/hostman/storageman/storage_rbd.go
+++ b/pkg/hostman/storageman/storage_rbd.go
@@ -576,9 +576,17 @@ func (s *SRbdStorage) DeleteSnapshots(ctx context.Context, params interface{}) (
 	return nil, fmt.Errorf("Not support delete snapshots")
 }
 
-func (s *SRbdStorage) CreateDiskFromSnapshot(ctx context.Context, disk IDisk, input *SDiskCreateByDiskinfo) error {
+func (s *SRbdStorage) DeleteSnapshot(ctx context.Context, params interface{}) (jsonutils.JSONObject, error) {
+	return nil, fmt.Errorf("Not support delete snapshot")
+}
+
+func (s *SRbdStorage) CreateDiskFromSnapshot(ctx context.Context, disk IDisk, input *SDiskCreateByDiskinfo) (jsonutils.JSONObject, error) {
 	info := input.DiskInfo
-	return disk.CreateFromRbdSnapshot(ctx, info.SnapshotUrl, info.SrcDiskId, info.SrcPool)
+	err := disk.CreateFromRbdSnapshot(ctx, info.SnapshotUrl, info.SrcDiskId, info.SrcPool)
+	if err != nil {
+		return nil, err
+	}
+	return disk.GetDiskDesc(), nil
 }
 
 func (s *SRbdStorage) GetBackupDir() string {
diff --git a/pkg/hostman/storageman/storage_slvm.go b/pkg/hostman/storageman/storage_slvm.go
index 4711077aed..c8787e1028 100644
--- a/pkg/hostman/storageman/storage_slvm.go
+++ b/pkg/hostman/storageman/storage_slvm.go
@@ -15,11 +15,15 @@
 package storageman
 
 import (
+	"context"
+	"path"
+
 	"yunion.io/x/jsonutils"
 	"yunion.io/x/log"
 	"yunion.io/x/pkg/errors"
 
 	api "yunion.io/x/onecloud/pkg/apis/compute"
+	"yunion.io/x/onecloud/pkg/hostman/hostutils"
 	"yunion.io/x/onecloud/pkg/hostman/storageman/lvmutils"
 )
 
@@ -88,18 +92,58 @@ func (s *SSLVMStorage) GetDiskById(diskId string) (IDisk, error) {
 	}
 
 	var disk = NewSLVMDisk(s, diskId)
-	if disk.Probe() == nil {
+	err := disk.Probe()
+	if err == nil {
 		s.Disks = append(s.Disks, disk)
 		return disk, nil
+	} else {
+		log.Errorf("failed probe slvm disk %s: %s", diskId, err)
 	}
 	return nil, errors.ErrNotFound
 }
 
-func (s *SSLVMStorage) Accessible() error {
-	if err := lvmutils.VgActive(s.Path, true); err != nil {
-		log.Warningf("vgactive got %s", err)
+func (s *SSLVMStorage) CreateDiskFromSnapshot(ctx context.Context, disk IDisk, input *SDiskCreateByDiskinfo) (jsonutils.JSONObject, error) {
+	snapshotLocation := disk.GetSnapshotPath(input.DiskInfo.SnapshotId)
+
+	return disk.CreateFromSnapshotLocation(ctx, snapshotLocation, int64(input.DiskInfo.DiskSizeMb), &input.DiskInfo.EncryptInfo)
+}
+
+func (s *SSLVMStorage) DeleteSnapshot(ctx context.Context, params interface{}) (jsonutils.JSONObject, error) {
+	input, ok := params.(SStorageDeleteSnapshot)
+	if !ok {
+		return nil, hostutils.ParamsError
 	}
 
+	if input.BlockStream {
+		diskLvPath := path.Join("/dev", s.GetPath(), input.DiskId)
+		err := lvmutils.LVActive(diskLvPath, false, s.Lvmlockd())
+		if err != nil {
+			return nil, errors.Wrap(err, "lvactive exclusive")
+		}
+
+		err = ConvertLVMDisk(s.GetPath(), input.DiskId)
+		if err != nil {
+			return nil, err
+		}
+
+	} else if len(input.ConvertSnapshot) > 0 {
+		convertSnapshotName := "snap_" + input.ConvertSnapshot
+		convertSnapshotPath := path.Join("/dev", s.GetPath(), convertSnapshotName)
+		err := lvmutils.LVActive(convertSnapshotPath, false, s.Lvmlockd())
+		if err != nil {
+			return nil, errors.Wrap(err, "lvactive exclusive")
+		}
+
+		if err := ConvertLVMDisk(s.GetPath(), convertSnapshotName); err != nil {
+			return nil, err
+		}
+	}
+
+	snapId := path.Join("/dev", s.GetPath(), input.SnapshotId)
+	return nil, lvmutils.LvRemove(snapId)
+}
+
+func (s *SSLVMStorage) Accessible() error {
 	if err := lvmutils.VgDisplay(s.Path); err != nil {
 		return err
 	}
diff --git a/pkg/hostman/storageman/storagehandler/storagehandler.go b/pkg/hostman/storageman/storagehandler/storagehandler.go
index 193ab572ab..03ce00c984 100644
--- a/pkg/hostman/storageman/storagehandler/storagehandler.go
+++ b/pkg/hostman/storageman/storagehandler/storagehandler.go
@@ -56,6 +56,9 @@ func AddStorageHandler(prefix string, app *appsrv.Application) {
 		app.AddHandler("POST",
 			fmt.Sprintf("%s/%s/<storageId>/delete-snapshots", prefix, keyWords),
 			auth.Authenticate(storageDeleteSnapshots))
+		app.AddHandler("POST",
+			fmt.Sprintf("%s/%s/<storageId>/delete-snapshot", prefix, keyWords),
+			auth.Authenticate(storageDeleteSnapshot))
 		app.AddHandler("GET",
 			fmt.Sprintf("%s/%s/is-mount-point", prefix, keyWords),
 			auth.Authenticate(storageVerifyMountPoint))
@@ -441,6 +444,41 @@ func deleteBackup(ctx context.Context, params interface{}) (jsonutils.JSONObject
 	return nil, nil
 }
 
+func storageDeleteSnapshot(ctx context.Context, w http.ResponseWriter, r *http.Request) {
+	params, _, body := appsrv.FetchEnv(ctx, w, r)
+	var storageId = params["<storageId>"]
+	storage := storageman.GetManager().GetStorage(storageId)
+	if storage == nil {
+		hostutils.Response(ctx, w, httperrors.NewNotFoundError("Stroage Not found"))
+		return
+	}
+	diskId, err := body.GetString("disk_id")
+	if err != nil {
+		hostutils.Response(ctx, w, httperrors.NewImageNotFoundError("disk_id"))
+		return
+	}
+	// blockStream indicate snapshot<-disk
+	blockStream := jsonutils.QueryBoolean(body, "block_stream", false)
+	autoDeleted := jsonutils.QueryBoolean(body, "auto_deleted", false)
+
+	input := &storageman.SStorageDeleteSnapshot{
+		DiskId:      diskId,
+		BlockStream: blockStream,
+	}
+
+	if !blockStream && !autoDeleted {
+		convertSnapshot, err := body.GetString("convert_snapshot")
+		if err != nil {
+			hostutils.Response(ctx, w, httperrors.NewMissingParameterError("convert_snapshot"))
+			return
+		}
+		input.ConvertSnapshot = convertSnapshot
+	}
+
+	hostutils.DelayTask(ctx, storage.DeleteSnapshot, input)
+	hostutils.ResponseOk(ctx, w)
+}
+
 func storageDeleteSnapshots(ctx context.Context, w http.ResponseWriter, r *http.Request) {
 	params, _, body := appsrv.FetchEnv(ctx, w, r)
 	var storageId = params["<storageId>"]
@@ -454,6 +492,18 @@ func storageDeleteSnapshots(ctx context.Context, w http.ResponseWriter, r *http.
 		hostutils.Response(ctx, w, httperrors.NewImageNotFoundError("disk_id"))
 		return
 	}
-	hostutils.DelayTask(ctx, storage.DeleteSnapshots, diskId)
+	snapshotIds := []string{}
+	err = body.Unmarshal(&snapshotIds, "snapshot_ids")
+	if err != nil {
+		hostutils.Response(ctx, w, httperrors.NewMissingParameterError("snapshot_ids"))
+		return
+	}
+
+	input := &storageman.SStorageDeleteSnapshots{
+		DiskId:      diskId,
+		SnapshotIds: snapshotIds,
+	}
+
+	hostutils.DelayTask(ctx, storage.DeleteSnapshots, input)
 	hostutils.ResponseOk(ctx, w)
 }
diff --git a/pkg/hostman/storageman/storagehelper.go b/pkg/hostman/storageman/storagehelper.go
index 77836d7e87..12bf228fa6 100644
--- a/pkg/hostman/storageman/storagehelper.go
+++ b/pkg/hostman/storageman/storagehelper.go
@@ -46,6 +46,18 @@ type SDiskCleanupSnapshots struct {
 	DeleteSnapshots  []jsonutils.JSONObject
 }
 
+type SStorageDeleteSnapshots struct {
+	DiskId      string
+	SnapshotIds []string
+}
+
+type SStorageDeleteSnapshot struct {
+	DiskId          string
+	SnapshotId      string
+	ConvertSnapshot string
+	BlockStream     bool
+}
+
 type SDiskBakcup struct {
 	SnapshotId              string              `json:"snapshot_id"`
 	BackupId                string              `json:"backup_id"`