diff --git a/pkg/compute/guestdrivers/kvm.go b/pkg/compute/guestdrivers/kvm.go
index 78a916e22d..d777f19843 100644
--- a/pkg/compute/guestdrivers/kvm.go
+++ b/pkg/compute/guestdrivers/kvm.go
@@ -329,7 +329,7 @@ func (self *SKVMGuestDriver) RequestSyncToBackup(ctx context.Context, guest *mod
 	body := jsonutils.NewDict()
 	body.Set("backup_nbd_server_uri", jsonutils.NewString(guest.GetMetadata("backup_nbd_server_uri", task.GetUserCred())))
 	host := guest.GetHost()
-	url := fmt.Sprintf("%s/server/%s/drive-mirror", host.ManagerUri, guest.Id)
+	url := fmt.Sprintf("%s/servers/%s/drive-mirror", host.ManagerUri, guest.Id)
 	header := self.getTaskRequestHeader(task)
 	_, _, err := httputils.JSONRequest(httputils.GetDefaultClient(), ctx, "POST", url, header, body, false)
 	if err != nil {
diff --git a/pkg/compute/models/disks.go b/pkg/compute/models/disks.go
index aeeffa117d..8011d8beb6 100644
--- a/pkg/compute/models/disks.go
+++ b/pkg/compute/models/disks.go
@@ -95,7 +95,7 @@ type SDisk struct {
 	AutoDelete bool `nullable:"false" default:"false" get:"user" update:"user"` // Column(Boolean, nullable=False, default=False)
 
 	StorageId       string `width:"128" charset:"ascii" nullable:"true" list:"admin" create:"required"` // Column(VARCHAR(ID_LENGTH, charset='ascii'), nullable=False)
-	BackupStorageId string `width:"128" charset:"ascii" nullable:"true" list:"admin" create:"required"`
+	BackupStorageId string `width:"128" charset:"ascii" nullable:"true" list:"admin"`
 
 	// # backing template id and type
 	TemplateId string `width:"256" charset:"ascii" nullable:"true" list:"user"` // Column(VARCHAR(ID_LENGTH, charset='ascii'), nullable=True)
diff --git a/pkg/compute/models/guest_actions.go b/pkg/compute/models/guest_actions.go
index 8239026e7a..18dbf27bf3 100644
--- a/pkg/compute/models/guest_actions.go
+++ b/pkg/compute/models/guest_actions.go
@@ -199,8 +199,9 @@ func (self *SGuest) AllowPerformStop(ctx context.Context,
 
 func (self *SGuest) PerformStop(ctx context.Context, userCred mcclient.TokenCredential, query jsonutils.JSONObject,
 	data jsonutils.JSONObject) (jsonutils.JSONObject, error) {
-	isForce := jsonutils.QueryBoolean(data, "is_force", false)
-	if utils.IsInStringArray(self.Status, []string{VM_RUNNING, VM_STOP_FAILED}) || (isForce && self.Status == VM_STOPPING) {
+	// XXX if is force, force stop guest
+	var isForce = jsonutils.QueryBoolean(data, "is_force", false)
+	if isForce || utils.IsInStringArray(self.Status, []string{VM_RUNNING, VM_STOP_FAILED}) {
 		return nil, self.StartGuestStopTask(ctx, userCred, isForce, "")
 	} else {
 		return nil, httperrors.NewInvalidStatusError("Cannot stop server in status %s", self.Status)
diff --git a/pkg/compute/models/guests.go b/pkg/compute/models/guests.go
index 4a3b3fd5ae..5bb4ee2bce 100644
--- a/pkg/compute/models/guests.go
+++ b/pkg/compute/models/guests.go
@@ -90,6 +90,7 @@ const (
 	VM_SNAPSHOT        = "snapshot"
 	VM_SNAPSHOT_DELETE = "snapshot_delete"
 	VM_BLOCK_STREAM    = "block_stream"
+	VM_MIRROR_FAIL     = "mirror_failed"
 	VM_SNAPSHOT_SUCC   = "snapshot_succ"
 	VM_SNAPSHOT_FAILED = "snapshot_failed"
 
diff --git a/pkg/compute/tasks/guest_start_task.go b/pkg/compute/tasks/guest_start_task.go
index ba9f250e89..0f6c5454d1 100644
--- a/pkg/compute/tasks/guest_start_task.go
+++ b/pkg/compute/tasks/guest_start_task.go
@@ -110,7 +110,7 @@ func (self *GuestStartTask) OnStartBackupGuestComplete(ctx context.Context, gues
 func (self *GuestStartTask) OnStartComplete(ctx context.Context, obj db.IStandaloneModel, data jsonutils.JSONObject) {
 	guest := obj.(*models.SGuest)
 	db.OpsLog.LogEvent(guest, db.ACT_START, guest.GetShortDesc(), self.UserCred)
-	self.SetStage("on_guest_syncstatus_after_start", nil)
+	self.SetStage("OnGuestSyncstatusAfterStart", nil)
 	guest.StartSyncstatus(ctx, self.UserCred, self.GetTaskId())
 	logclient.AddActionLog(guest, logclient.ACT_VM_START, "", self.UserCred, true)
 	// self.taskComplete(ctx, guest)