diff --git a/cmd/climc/shell/servers.go b/cmd/climc/shell/servers.go
index 27cbae80de..be6db6bec8 100644
--- a/cmd/climc/shell/servers.go
+++ b/cmd/climc/shell/servers.go
@@ -167,7 +167,11 @@ func init() {
 	})
 
 	R(&options.ServerDeleteBackupOptions{}, "server-delete-backup", "Guest delete backup", func(s *mcclient.ClientSession, opts *options.ServerDeleteBackupOptions) error {
-		ret, err := modules.Servers.PerformAction(s, opts.ID, "delete-backup", nil)
+		params, err := options.StructToParams(opts)
+		if err != nil {
+			return err
+		}
+		ret, err := modules.Servers.PerformAction(s, opts.ID, "delete-backup", params)
 		if err != nil {
 			return err
 		}
diff --git a/pkg/compute/models/guest_actions.go b/pkg/compute/models/guest_actions.go
index e15a3da332..77c896bef4 100644
--- a/pkg/compute/models/guest_actions.go
+++ b/pkg/compute/models/guest_actions.go
@@ -2383,7 +2383,7 @@ func (self *SGuest) PerformDeleteBackup(ctx context.Context, userCred mcclient.T
 	}
 
 	taskData := jsonutils.NewDict()
-	taskData.Set("pruge", jsonutils.NewBool(jsonutils.QueryBoolean(data, "purge", false)))
+	taskData.Set("purge", jsonutils.NewBool(jsonutils.QueryBoolean(data, "purge", false)))
 	taskData.Set("host_id", jsonutils.NewString(self.BackupHostId))
 	taskData.Set("failed_status", jsonutils.NewString(VM_BACKUP_DELETE_FAILED))
 
diff --git a/pkg/mcclient/mcclient.go b/pkg/mcclient/mcclient.go
index eeec2ccb1a..cc8fdc4e87 100644
--- a/pkg/mcclient/mcclient.go
+++ b/pkg/mcclient/mcclient.go
@@ -5,8 +5,10 @@ import (
 	"crypto/tls"
 	"fmt"
 	"io"
+	"net"
 	"net/http"
 	"strings"
+	"time"
 
 	"yunion.io/x/jsonutils"
 	"yunion.io/x/log"
@@ -42,12 +44,19 @@ func NewClient(authUrl string, timeout int, debug bool, insecure bool, certFile,
 
 	tr := &http.Transport{
 		TLSClientConfig: tlsConf,
+		DialContext: (&net.Dialer{
+			Timeout: 5 * time.Second,
+		}).DialContext,
+		TLSHandshakeTimeout: 10 * time.Second,
 	}
 
 	client := Client{authUrl: authUrl,
-		timeout:  timeout,
-		debug:    debug,
-		httpconn: &http.Client{Transport: tr}}
+		timeout: timeout,
+		debug:   debug,
+		httpconn: &http.Client{
+			Transport: tr,
+		},
+	}
 	return &client
 }
 
diff --git a/pkg/mcclient/options/servers.go b/pkg/mcclient/options/servers.go
index ba7b82c87e..6e8150fd28 100644
--- a/pkg/mcclient/options/servers.go
+++ b/pkg/mcclient/options/servers.go
@@ -47,7 +47,7 @@ type ServerIdsOptions struct {
 
 type ServerDeleteBackupOptions struct {
 	ID    string `help:"ID of the server" json:"-"`
-	Purge bool   `help:"Purge Guest Backup" json:"purge"`
+	Purge *bool  `help:"Purge Guest Backup" json:"purge"`
 }
 
 type ServerShowOptions struct {
diff --git a/pkg/util/httputils/httputils.go b/pkg/util/httputils/httputils.go
index b13e1a8f76..8e62b50116 100644
--- a/pkg/util/httputils/httputils.go
+++ b/pkg/util/httputils/httputils.go
@@ -6,6 +6,7 @@ import (
 	"fmt"
 	"io"
 	"io/ioutil"
+	"net"
 	"net/http"
 	"net/url"
 	"os"
@@ -102,7 +103,11 @@ func GetAddrPort(urlStr string) (string, int, error) {
 
 func GetClient(insecure bool) *http.Client {
 	tr := &http.Transport{
-		TLSClientConfig: &tls.Config{InsecureSkipVerify: insecure},
+		DialContext: (&net.Dialer{
+			Timeout: 5 * time.Second,
+		}).DialContext,
+		TLSHandshakeTimeout: 10 * time.Second,
+		TLSClientConfig:     &tls.Config{InsecureSkipVerify: insecure},
 	}
 	return &http.Client{Transport: tr}
 }