diff --git a/cmd/climc/climc.go b/cmd/climc/climc.go
index 6f22d18d32..037cab5e46 100644
--- a/cmd/climc/climc.go
+++ b/cmd/climc/climc.go
@@ -4,8 +4,9 @@ import (
 	"fmt"
 	"os"
 	"strings"
+	"time"
 
-	"github.com/c-bata/go-prompt"
+	prompt "github.com/c-bata/go-prompt"
 	"github.com/yunionio/log"
 	"github.com/yunionio/pkg/util/version"
 	"github.com/yunionio/structarg"
@@ -34,6 +35,9 @@ type BaseOptions struct {
 	SUBCOMMAND     string `help:"climc subcommand" subcommand:"true"`
 }
 
+var CacheToken mcclient.TokenCredential
+var CacheTime time.Time
+
 func getSubcommandsParser() (*structarg.ArgumentParser, error) {
 	parse, e := structarg.NewArgumentParser(&BaseOptions{},
 		"climc",
@@ -116,18 +120,23 @@ func newClientSession(options *BaseOptions) (*mcclient.ClientSession, error) {
 		options.Timeout,
 		options.Debug,
 		options.Secure)
-	token, err := client.Authenticate(options.OsUsername,
-		options.OsPassword,
-		options.OsDomainName,
-		options.OsProjectName)
-	if err != nil {
-		return nil, err
+
+	if CacheToken == nil || {
+		token, err := client.Authenticate(options.OsUsername,
+			options.OsPassword,
+			options.OsDomainName,
+			options.OsProjectName)
+		if err != nil {
+			return nil, err
+		}
+		CacheToken = token
+		CacheTime = time.Now()
 	}
 
 	session := client.NewSession(options.OsRegionName,
 		options.OsZoneName,
 		options.OsEndpointType,
-		token,
+		CacheToken,
 		options.ApiVersion)
 	return session, nil
 }
@@ -144,7 +153,7 @@ func main() {
 		fmt.Print(parser.HelpString())
 	} else if options.Version {
 		fmt.Printf("Yunion API client version:\n %s\n", version.GetJsonString())
-	} else if len(os.Args) <= 1 {
+	} else if len(os.Args) <= 1 || (options.ApiVersion == "v2" && len(os.Args) <= 3) {
 		session, e := newClientSession(options)
 		if e != nil {
 			showErrorAndExit(e)
diff --git a/pkg/compute/guestdrivers/base.go b/pkg/compute/guestdrivers/base.go
index 948bbd0c38..dbb56293a8 100644
--- a/pkg/compute/guestdrivers/base.go
+++ b/pkg/compute/guestdrivers/base.go
@@ -54,13 +54,13 @@ func (self *SBaseGuestDriver) StartGuestCreateTask(guest *models.SGuest, ctx con
 }
 
 func (self *SBaseGuestDriver) OnGuestCreateTaskComplete(ctx context.Context, guest *models.SGuest, task taskman.ITask) error {
-	//if jsonutils.QueryBoolean(task.GetParams(), "auto_start", false) {
-	//	task.SetStage("on_auto_start_guest", nil)
-	//	return guest.StartGueststartTask(ctx, task.GetUserCred(), nil, task.GetTaskId())
-	//} else {
-	task.SetStage("on_sync_status_complete", nil)
-	return guest.StartSyncstatus(ctx, task.GetUserCred(), task.GetTaskId())
-	//}
+	if jsonutils.QueryBoolean(task.GetParams(), "auto_start", false) {
+		task.SetStage("on_auto_start_guest", nil)
+		return guest.StartGueststartTask(ctx, task.GetUserCred(), nil, task.GetTaskId())
+	} else {
+		task.SetStage("on_sync_status_complete", nil)
+		return guest.StartSyncstatus(ctx, task.GetUserCred(), task.GetTaskId())
+	}
 }
 
 func (self *SBaseGuestDriver) StartDeleteGuestTask(ctx context.Context, userCred mcclient.TokenCredential, guest *models.SGuest, params *jsonutils.JSONDict, parentTaskId string) error {
@@ -113,3 +113,7 @@ func (self *SBaseGuestDriver) DoGuestCreateDisksTask(ctx context.Context, guest
 func (self *SBaseGuestDriver) RequestChangeVmConfig(ctx context.Context, guest *models.SGuest, task taskman.ITask, vcpuCount, vmemSize int64) error {
 	return fmt.Errorf("Not Implement")
 }
+
+func (self *SBaseGuestDriver) RequestGuestHotAddIso(ctx context.Context, guest *models.SGuest, path string, task taskman.ITask) error {
+	return fmt.Errorf("Not Implement")
+}
diff --git a/pkg/compute/guestdrivers/esxi.go b/pkg/compute/guestdrivers/esxi.go
index e516d0c266..b0b36feb24 100644
--- a/pkg/compute/guestdrivers/esxi.go
+++ b/pkg/compute/guestdrivers/esxi.go
@@ -3,11 +3,8 @@ package guestdrivers
 import (
 	"context"
 
-	"github.com/yunionio/jsonutils"
-
 	"github.com/yunionio/onecloud/pkg/cloudcommon/db/taskman"
 	"github.com/yunionio/onecloud/pkg/compute/models"
-	"github.com/yunionio/onecloud/pkg/mcclient"
 )
 
 type SESXiGuestDriver struct {
@@ -44,3 +41,8 @@ func (self *SESXiGuestDriver) RequestDeleteDetachedDisk(ctx context.Context, dis
 	task.ScheduleRun(nil)
 	return nil
 }
+
+func (self *SESXiGuestDriver) RequestGuestHotAddIso(ctx context.Context, guest *models.SGuest, path string, task taskman.ITask) error {
+	task.ScheduleRun(nil)
+	return nil
+}
diff --git a/pkg/compute/guestdrivers/kvm.go b/pkg/compute/guestdrivers/kvm.go
index 73a6439786..b638298b15 100644
--- a/pkg/compute/guestdrivers/kvm.go
+++ b/pkg/compute/guestdrivers/kvm.go
@@ -243,3 +243,11 @@ func (self *SKVMGuestDriver) RqeuestSuspendOnHost(ctx context.Context, guest *mo
 	_, _, err := httputils.JSONRequest(httputils.GetDefaultClient(), ctx, "POST", url, header, nil, false)
 	return err
 }
+
+func (self *SKVMGuestDriver) RequestGuestCreateAllDisks(ctx context.Context, guest *models.SGuest, task taskman.ITask) error {
+	return guest.StartGuestCreateDiskTask(ctx, task.GetUserCred(), task.GetParams(), task.GetTaskId())
+}
+
+func (self *SKVMGuestDriver) RequestGuestHotAddIso(ctx context.Context, guest *models.SGuest, path string, task taskman.ITask) error {
+	return guest.StartSyncstatus(ctx, task.GetUserCred(), task.GetTaskId())
+}
diff --git a/pkg/compute/models/disks.go b/pkg/compute/models/disks.go
index 5b50f79363..93569d45f3 100644
--- a/pkg/compute/models/disks.go
+++ b/pkg/compute/models/disks.go
@@ -607,6 +607,11 @@ func parseDiskInfo(ctx context.Context, userCred mcclient.TokenCredential, info
 		}
 		return &diskConfig, nil
 	}
+
+	// default backend
+	diskConfig.Backend = STORAGE_LOCAL
+	// diskConfig.Medium = DISK_TYPE_HYBRID
+
 	diskStr, err := info.GetString()
 	if err != nil {
 		log.Errorf("invalid diskinfo format %s", err)
diff --git a/pkg/compute/models/guestdrivers.go b/pkg/compute/models/guestdrivers.go
index 3370ef5529..bd0f21ede6 100644
--- a/pkg/compute/models/guestdrivers.go
+++ b/pkg/compute/models/guestdrivers.go
@@ -85,6 +85,8 @@ type IGuestDriver interface {
 	AllowReconfigGuest() bool
 	DoGuestCreateDisksTask(ctx context.Context, guest *SGuest, task taskman.ITask) error
 	RequestChangeVmConfig(ctx context.Context, guest *SGuest, task taskman.ITask, vcpuCount, vmemSize int64) error
+
+	RequestGuestHotAddIso(ctx context.Context, guest *SGuest, path string, task taskman.ITask) error
 }
 
 var guestDrivers map[string]IGuestDriver
diff --git a/pkg/compute/models/guests.go b/pkg/compute/models/guests.go
index 7a228421b8..0186d7644b 100644
--- a/pkg/compute/models/guests.go
+++ b/pkg/compute/models/guests.go
@@ -521,6 +521,7 @@ func (manager *SGuestManager) ValidateCreateData(ctx context.Context, userCred m
 		hypervisor = HYPERVISOR_BAREMETAL
 	}
 
+	// base validate_create_data
 	if data.Contains("prefer_baremetal") || data.Contains("prefer_host") {
 		if !userCred.IsSystemAdmin() {
 			return nil, httperrors.NewNotSufficientPrivilegeError("Only system admin can specify preferred host")
@@ -558,7 +559,6 @@ func (manager *SGuestManager) ValidateCreateData(ctx context.Context, userCred m
 		if err != nil {
 			return nil, err
 		}
-
 	} else {
 		schedtags := make(map[string]string)
 		if data.Contains("aggregate_strategy") {
@@ -613,12 +613,16 @@ func (manager *SGuestManager) ValidateCreateData(ctx context.Context, userCred m
 		}
 	}
 
+	// default hypervisor
+	if len(hypervisor) == 0 {
+		hypervisor = HYPERVISOR_KVM
+	}
+
 	if !utils.IsInStringArray(hypervisor, HYPERVISORS) {
 		return nil, httperrors.NewInputParameterError("Hypervisor %s not supported", hypervisor)
 	}
 
 	data.Add(jsonutils.NewString(hypervisor), "hypervisor")
-
 	for idx := 1; data.Contains(fmt.Sprintf("disk.%d", idx)); idx += 1 {
 		diskJson, err := data.Get(fmt.Sprintf("disk.%d", idx))
 		if err != nil {
@@ -789,13 +793,27 @@ func getGuestResourceRequirements(ctx context.Context, userCred mcclient.TokenCr
 
 func (guest *SGuest) PostCreate(ctx context.Context, userCred mcclient.TokenCredential, ownerProjId string, query jsonutils.JSONObject, data jsonutils.JSONObject) {
 	guest.SVirtualResourceBase.PostCreate(ctx, userCred, ownerProjId, query, data)
-
+	tags := []string{"cpu_bound", "io_bound", "io_hardlimit"}
+	appTags := make([]string, 0)
+	for _, tag := range tags {
+		if data.Contains(tag) {
+			appTags = append(appTags, tag)
+		}
+	}
+	guest.setApptags(ctx, appTags, userCred)
 	osProfileJson, _ := data.Get("__os_profile__")
 	if osProfileJson != nil {
 		guest.setOSProfile(ctx, userCred, osProfileJson)
 	}
 }
 
+func (guest *SGuest) setApptags(ctx context.Context, appTags []string, userCred mcclient.TokenCredential) {
+	err := guest.SetMetadata(ctx, "app_tags", strings.Join(appTags, ","), userCred)
+	if err != nil {
+		log.Errorln(err)
+	}
+}
+
 func (manager *SGuestManager) OnCreateComplete(ctx context.Context, items []db.IModel, userCred mcclient.TokenCredential, query jsonutils.JSONObject, data jsonutils.JSONObject) {
 	pendingUsage := getGuestResourceRequirements(ctx, userCred, data, len(items))
 
@@ -2002,11 +2020,26 @@ func (self *SGuest) insertIso(imageId string) bool {
 	return cdrom.insertIso(imageId)
 }
 
-func (self *SGuest) insertIsoSucc(imageId string, path string, size int, name string) bool {
+func (self *SGuest) InsertIsoSucc(imageId string, path string, size int, name string) bool {
 	cdrom := self.getCdrom()
 	return cdrom.insertIsoSucc(imageId, path, size, name)
 }
 
+func (self *SGuest) GetDetailsIso(userCred mcclient.TokenCredential) jsonutils.JSONObject {
+	cdrom := self.getCdrom()
+	desc := jsonutils.NewDict()
+	if len(cdrom.ImageId) > 0 {
+		desc.Set("image_id", jsonutils.NewString(cdrom.ImageId))
+		desc.Set("status", jsonutils.NewString("inserting"))
+	}
+	if len(cdrom.Path) > 0 {
+		desc.Set("name", jsonutils.NewString(cdrom.Name))
+		desc.Set("size", jsonutils.NewInt(int64(cdrom.Size)))
+		desc.Set("status", jsonutils.NewString("ready"))
+	}
+	return desc
+}
+
 func (self *SGuest) StartInsertIsoTask(ctx context.Context, imageId string, hostId string, userCred mcclient.TokenCredential, parentTaskId string) error {
 	self.insertIso(imageId)
 
@@ -2014,7 +2047,7 @@ func (self *SGuest) StartInsertIsoTask(ctx context.Context, imageId string, host
 	data.Add(jsonutils.NewString(imageId), "image_id")
 	data.Add(jsonutils.NewString(hostId), "host_id")
 
-	task, err := taskman.TaskManager.NewTask(ctx, "GuestInsertISOTask", self, userCred, data, parentTaskId, "", nil)
+	task, err := taskman.TaskManager.NewTask(ctx, "GuestInsertIsoTask", self, userCred, data, parentTaskId, "", nil)
 	if err != nil {
 		return err
 	}
diff --git a/pkg/compute/models/hosts.go b/pkg/compute/models/hosts.go
index 7e4f837e3e..86b3f207bd 100644
--- a/pkg/compute/models/hosts.go
+++ b/pkg/compute/models/hosts.go
@@ -18,6 +18,7 @@ import (
 	"github.com/yunionio/sqlchemy"
 
 	"github.com/yunionio/onecloud/pkg/cloudcommon/db"
+	"github.com/yunionio/onecloud/pkg/cloudcommon/db/taskman"
 	"github.com/yunionio/onecloud/pkg/cloudprovider"
 	"github.com/yunionio/onecloud/pkg/compute/options"
 	"github.com/yunionio/onecloud/pkg/httperrors"
@@ -1517,6 +1518,22 @@ func (manager *SHostManager) GetHostsByManagerAndRegion(managerId string, region
 	return ret
 }
 
+func (self *SHost) StartImageCacheTask(ctx context.Context, userCred mcclient.TokenCredential, imageId, parentTaskId string, isForce bool) error {
+	//Todo
+	// HostcachedimagesManager.Register(userCred, self, imageId)
+	data := jsonutils.NewDict()
+	data.Set("image_id", jsonutils.NewString(imageId))
+	if isForce {
+		data.Set("is_force", jsonutils.JSONTrue)
+	}
+	task, err := taskman.TaskManager.NewTask(ctx, "StorageCacheImageTask", self, userCred, data, parentTaskId, "", nil)
+	if err != nil {
+		return err
+	}
+	task.ScheduleRun(nil)
+	return nil
+}
+
 func (self *SHost) Request(userCred mcclient.TokenCredential, method string, url string, headers http.Header, body jsonutils.JSONObject) (jsonutils.JSONObject, error) {
 	s := auth.GetSession(userCred, "", "")
 	_, ret, err := s.JSONRequest(self.ManagerUri, "", method, url, headers, body)
diff --git a/pkg/compute/tasks/guest_create_disk_task.go b/pkg/compute/tasks/guest_create_disk_task.go
index 4ba43f712a..a477d42ded 100644
--- a/pkg/compute/tasks/guest_create_disk_task.go
+++ b/pkg/compute/tasks/guest_create_disk_task.go
@@ -28,6 +28,10 @@ func (self *GuestCreateDiskTask) OnDiskPrepared(ctx context.Context, obj db.ISta
 	self.SetStageComplete(ctx, nil)
 }
 
+func (self *GuestCreateDiskTask) OnDiskPreparedFailed(ctx context.Context, obj db.IStandaloneModel, data jsonutils.JSONObject) {
+	self.SetStageFailed(ctx, data.String())
+}
+
 /* --------------------------------------------- */
 /* -----------KVMGuestCreateDiskTask------------ */
 /* --------------------------------------------- */
diff --git a/pkg/compute/tasks/guest_insert_iso_task.go b/pkg/compute/tasks/guest_insert_iso_task.go
index 59926cfd73..fa60fcd032 100644
--- a/pkg/compute/tasks/guest_insert_iso_task.go
+++ b/pkg/compute/tasks/guest_insert_iso_task.go
@@ -4,8 +4,10 @@ import (
 	"context"
 
 	"github.com/yunionio/jsonutils"
+
 	"github.com/yunionio/onecloud/pkg/cloudcommon/db"
 	"github.com/yunionio/onecloud/pkg/cloudcommon/db/taskman"
+	"github.com/yunionio/onecloud/pkg/compute/models"
 )
 
 type GuestInsertIsoTask struct {
@@ -17,5 +19,59 @@ func init() {
 }
 
 func (self *GuestInsertIsoTask) OnInit(ctx context.Context, obj db.IStandaloneModel, data jsonutils.JSONObject) {
-	// TODO
+	self.prepareIsoImage(ctx, obj)
+}
+
+func (self *GuestInsertIsoTask) prepareIsoImage(ctx context.Context, obj db.IStandaloneModel) {
+	imageId, _ := self.Params.GetString("image_id")
+	db.OpsLog.LogEvent(obj, db.ACT_ISO_PREPARING, imageId, self.UserCred)
+	var host *models.SHost
+	if self.Params.Contains("host_id") {
+		hostId, _ := self.Params.GetString("host_id")
+		iHost, _ := models.HostManager.FetchById(hostId)
+		host = iHost.(*models.SHost)
+	} else {
+		guest := obj.(*models.SGuest)
+		host = guest.GetHost()
+	}
+	self.SetStage("OnIsoPrepareComplete", nil)
+	host.StartImageCacheTask(ctx, self.UserCred, imageId, self.GetTaskId(), false)
+}
+
+func (self *GuestInsertIsoTask) OnIsoPrepareCompleteFailed(ctx context.Context, obj db.IStandaloneModel, data jsonutils.JSONObject) {
+	imageId, _ := self.Params.GetString("image_id")
+	db.OpsLog.LogEvent(obj, db.ACT_ISO_PREPARE_FAIL, imageId, self.UserCred)
+	guest := obj.(*models.SGuest)
+	guest.EjectIso(self.UserCred)
+	self.SetStageFailed(ctx, "OnIsoPrepareCompleteFailed")
+}
+
+func (self *GuestInsertIsoTask) OnIsoPrepareComplete(ctx context.Context, obj db.IStandaloneModel, data jsonutils.JSONObject) {
+	imageId, _ := data.GetString("image_id")
+	jSize, err := data.Get("size")
+	if err != nil {
+		self.SetStageFailed(ctx, err.Error())
+	}
+	size, err := jSize.Int()
+	if err != nil {
+		self.SetStageFailed(ctx, err.Error())
+	}
+	name, _ := data.GetString("name")
+	path, _ := data.GetString("path")
+	guest := obj.(*models.SGuest)
+	if guest.InsertIsoSucc(imageId, path, int(size), name) {
+		db.OpsLog.LogEvent(guest, db.ACT_ISO_ATTACH, guest.GetDetailsIso(self.UserCred), self.UserCred)
+		if guest.Status == models.VM_RUNNING {
+			self.SetStage("OnConfigSyncComplete", nil)
+			guest.GetDriver().RequestGuestHotAddIso(ctx, guest, path, self)
+		} else {
+			self.SetStageComplete(ctx, nil)
+		}
+	} else {
+		self.SetStageComplete(ctx, nil)
+	}
+}
+
+func (self *GuestInsertIsoTask) OnConfigSyncComplete(ctx context.Context, obj db.IStandaloneModel, data jsonutils.JSONObject) {
+	self.SetStageComplete(ctx, nil)
 }
diff --git a/pkg/util/esxi/storage.go b/pkg/util/esxi/storage.go
index e1c89478bf..bf8f918ccf 100644
--- a/pkg/util/esxi/storage.go
+++ b/pkg/util/esxi/storage.go
@@ -54,6 +54,10 @@ func (self *SDatastore) GetIZone() cloudprovider.ICloudZone {
 	return nil
 }
 
+func (self *SDatastore) GetIDisk(idStr string) (cloudprovider.ICloudDisk, error) {
+	return nil, cloudprovider.ErrNotImplemented
+}
+
 func (self *SDatastore) GetIDisks() ([]cloudprovider.ICloudDisk, error) {
 	return nil, cloudprovider.ErrNotImplemented
 }