diff --git a/pkg/compute/models/disks.go b/pkg/compute/models/disks.go
index a2d996d10c..a4e7cf9c4b 100644
--- a/pkg/compute/models/disks.go
+++ b/pkg/compute/models/disks.go
@@ -984,6 +984,13 @@ func (self *SDisk) ValidatePurgeCondition(ctx context.Context) error {
 }
 
 func (self *SDisk) validateDeleteCondition(ctx context.Context, isPurge bool) error {
+	if !isPurge {
+		storage := self.GetStorage()
+		host := storage.GetMasterHost()
+		if host == nil {
+			return httperrors.NewBadRequestError("storage of disk no valid host")
+		}
+	}
 	cnt, err := self.GetGuestDiskCount()
 	if err != nil {
 		return httperrors.NewInternalServerError("GetGuestDiskCount fail %s", err)
diff --git a/pkg/compute/models/guest_actions.go b/pkg/compute/models/guest_actions.go
index 979659079b..041f3cc7d3 100644
--- a/pkg/compute/models/guest_actions.go
+++ b/pkg/compute/models/guest_actions.go
@@ -2030,12 +2030,16 @@ func (self *SGuest) AllowPerformDetachnetwork(ctx context.Context, userCred mccl
 }
 
 func (self *SGuest) PerformDetachnetwork(ctx context.Context, userCred mcclient.TokenCredential, query jsonutils.JSONObject, data jsonutils.JSONObject) (jsonutils.JSONObject, error) {
-	if self.Status != api.VM_READY {
+	if !utils.IsInStringArray(self.Status, []string{api.VM_READY, api.VM_RUNNING}) {
 		return nil, httperrors.NewInvalidStatusError("Cannot detach network in status %s", self.Status)
 	}
-	reserve := jsonutils.QueryBoolean(data, "reserve", false)
+	var (
+		reserve   = jsonutils.QueryBoolean(data, "reserve", false)
+		netStr, _ = data.GetString("net_id")
+		gns       []SGuestnetwork
+		err       error
+	)
 
-	netStr, _ := data.GetString("net_id")
 	if len(netStr) > 0 {
 		netObj, err := NetworkManager.FetchByIdOrName(userCred, netStr)
 		if err != nil {
@@ -2044,12 +2048,10 @@ func (self *SGuest) PerformDetachnetwork(ctx context.Context, userCred mcclient.
 			}
 			return nil, httperrors.NewGeneralError(err)
 		}
-		gns, err := self.GetNetworks(netObj.GetId())
+		gns, err = self.GetNetworks(netObj.GetId())
 		if err != nil {
 			return nil, httperrors.NewGeneralError(err)
 		}
-		err = self.detachNetworks(ctx, userCred, gns, reserve, true)
-		return nil, err
 	}
 	ipStr, _ := data.GetString("ip_addr")
 	if len(ipStr) > 0 {
@@ -2060,8 +2062,7 @@ func (self *SGuest) PerformDetachnetwork(ctx context.Context, userCred mcclient.
 			}
 			return nil, httperrors.NewGeneralError(err)
 		}
-		err = self.detachNetworks(ctx, userCred, []SGuestnetwork{*gn}, reserve, true)
-		return nil, err
+		gns = []SGuestnetwork{*gn}
 	}
 	macStr, _ := data.GetString("mac")
 	if len(macStr) > 0 {
@@ -2072,10 +2073,18 @@ func (self *SGuest) PerformDetachnetwork(ctx context.Context, userCred mcclient.
 			}
 			return nil, httperrors.NewGeneralError(err)
 		}
-		err = self.detachNetworks(ctx, userCred, []SGuestnetwork{*gn}, reserve, true)
+		gns = []SGuestnetwork{*gn}
+	}
+	if self.Status == api.VM_READY {
+		err = self.detachNetworks(ctx, userCred, gns, reserve, true)
 		return nil, err
+	} else {
+		err = self.detachNetworks(ctx, userCred, gns, reserve, false)
+		if err != nil {
+			return nil, err
+		}
+		return nil, self.StartSyncTask(ctx, userCred, false, "")
 	}
-	return nil, httperrors.NewInputParameterError("no either ip_addr, mac or network specified")
 }
 
 func (self *SGuest) AllowPerformAttachnetwork(ctx context.Context, userCred mcclient.TokenCredential, query jsonutils.JSONObject, data jsonutils.JSONObject) bool {
diff --git a/pkg/compute/models/instance_snapshots.go b/pkg/compute/models/instance_snapshots.go
index 02c028061f..3bffb504a3 100644
--- a/pkg/compute/models/instance_snapshots.go
+++ b/pkg/compute/models/instance_snapshots.go
@@ -277,7 +277,7 @@ func (self *SInstanceSnapshot) ToInstanceCreateInput(
 	}
 	sourceInput.OsType = self.OsType
 	sourceInput.InstanceType = self.InstanceType
-	// sourceInput.Networks = serverConfig.Networks
+	sourceInput.Networks = serverConfig.Networks
 	return sourceInput, nil
 }
 
diff --git a/pkg/hostman/guestman/guestman.go b/pkg/hostman/guestman/guestman.go
index c22c9fecba..b9ddefab60 100644
--- a/pkg/hostman/guestman/guestman.go
+++ b/pkg/hostman/guestman/guestman.go
@@ -452,7 +452,7 @@ func (m *SGuestManager) GetStatus(sid string) string {
 			}
 		}
 		if guest.IsRunning() {
-			if guest.BlockJobsCount() > 0 {
+			if guest.Monitor != nil && guest.BlockJobsCount() > 0 {
 				return GUEST_BLOCK_STREAM
 			}
 			return GUEST_RUNNING
diff --git a/pkg/hostman/guestman/qemu-kvmhelper.go b/pkg/hostman/guestman/qemu-kvmhelper.go
index 7604b5251c..22854c9137 100644
--- a/pkg/hostman/guestman/qemu-kvmhelper.go
+++ b/pkg/hostman/guestman/qemu-kvmhelper.go
@@ -466,6 +466,10 @@ func (s *SKVMGuestInstance) _generateStartScript(data *jsonutils.JSONDict) (stri
 
 	bootOrder, _ := s.Desc.GetString("boot_order")
 	cmd += fmt.Sprintf(" -boot order=%s", bootOrder)
+	cdrom, _ := s.Desc.Get("cdrom")
+	if cdrom != nil && cdrom.Contains("path") {
+		cmd += ",menu=on"
+	}
 
 	if s.getBios() == "UEFI" {
 		cmd += fmt.Sprintf(" -bios %s", options.HostOptions.OvmfPath)
@@ -560,7 +564,6 @@ func (s *SKVMGuestInstance) _generateStartScript(data *jsonutils.JSONDict) (stri
 		cmd += " -drive id=ide0-cd0,media=cdrom,if=none"
 	}
 
-	cdrom, _ := s.Desc.Get("cdrom")
 	if cdrom != nil && cdrom.Contains("path") {
 		cdromPath, _ := cdrom.GetString("path")
 		if len(cdromPath) > 0 {