diff --git a/pkg/appsrv/appsrv.go b/pkg/appsrv/appsrv.go
index c3b3cebf12..d9865a6d61 100644
--- a/pkg/appsrv/appsrv.go
+++ b/pkg/appsrv/appsrv.go
@@ -245,7 +245,7 @@ func (app *Application) defaultHandle(w http.ResponseWriter, r *http.Request, ri
 		if ok {
 			fw := newResponseWriterChannel(w)
 			worker := make(chan *SWorker)
-			to := hand.processTimeout
+			to := hand.FetchProcessTimeout(r)
 			if to == 0 {
 				to = app.processTimeout
 			}
diff --git a/pkg/appsrv/handlerinfo.go b/pkg/appsrv/handlerinfo.go
index ccca71da48..1163d95f2a 100644
--- a/pkg/appsrv/handlerinfo.go
+++ b/pkg/appsrv/handlerinfo.go
@@ -41,6 +41,14 @@ type SHandlerInfo struct {
 	skipLog        bool
 }
 
+func (this *SHandlerInfo) FetchProcessTimeout(r *http.Request) time.Duration {
+	if r.Method == http.MethodGet && r.Header.Get("X-Export-Keys") == "true" {
+		return time.Hour * 2
+	} else {
+		return this.processTimeout
+	}
+}
+
 func (this *SHandlerInfo) GetName(params map[string]string) string {
 	if len(this.name) > 0 {
 		return this.name
diff --git a/pkg/cloudcommon/db/db_dispatcher.go b/pkg/cloudcommon/db/db_dispatcher.go
index 880e4a7047..e05b5b3ceb 100644
--- a/pkg/cloudcommon/db/db_dispatcher.go
+++ b/pkg/cloudcommon/db/db_dispatcher.go
@@ -476,6 +476,12 @@ func ListItems(manager IModelManager, ctx context.Context, userCred mcclient.Tok
 		limit = maxLimit
 	}
 
+	// export data only
+	exportLimit, err := query.Int("export_limit")
+	if query.Contains("export_keys") && err == nil {
+		limit = exportLimit
+	}
+
 	var primaryCol sqlchemy.IColumnSpec
 	primaryCols := manager.TableSpec().PrimaryColumns()
 	if len(primaryCols) == 1 {
diff --git a/pkg/compute/models/guests.go b/pkg/compute/models/guests.go
index 7bb189ee79..0ee5d2b42e 100644
--- a/pkg/compute/models/guests.go
+++ b/pkg/compute/models/guests.go
@@ -1550,6 +1550,13 @@ func (manager *SGuestManager) ListItemExportKeys(ctx context.Context, q *sqlchem
 		q.AppendField(eipsSubQuery.Field("ip_addr", "eip"))
 	}
 
+	if utils.IsInStringArray("host", keys) {
+		hostQuery := HostManager.Query("id", "name").GroupBy("id")
+		hostSubQuery := hostQuery.SubQuery()
+		q.LeftJoin(hostSubQuery, sqlchemy.Equals(q.Field("host_id"), hostSubQuery.Field("id")))
+		q.AppendField(hostSubQuery.Field("name", "host"))
+	}
+
 	// host_id as filter key
 	if utils.IsInStringArray("region", keys) {
 		zoneQuery := ZoneManager.Query("id", "cloudregion_id").SubQuery()
@@ -1589,6 +1596,9 @@ func (manager *SGuestManager) GetExportExtraKeys(ctx context.Context, query json
 	if disk, ok := rowMap["disk_size"]; ok {
 		res.Set("disk", jsonutils.NewString(disk))
 	}
+	if host, ok := rowMap["host"]; ok && len(host) > 0 {
+		res.Set("host", jsonutils.NewString(host))
+	}
 	if region, ok := rowMap["region"]; ok && len(region) > 0 {
 		res.Set("region", jsonutils.NewString(region))
 	}