Reduced the time it takes to create and mount volumes on ECFS cluster…

… with a large number of Data Containers

src/ecfs/emanage-helper.go

@@ -74,7 +74,7 @@ func (ems *emanageClient) GetClient() *emanageClient {
 }
 
 func (ems *emanageClient) GetDcByName(dcName string) (*emanage.DataContainer, error) {
-	glog.V(log.DEBUG).Infof("ecfs: GetDcByName - getting DCs from ECFS management")
+	glog.V(log.DEBUG).Infof("ecfs: GetDcByName %v - getting DCs from ECFS management", dcName)
 	dcs, err := ems.GetClient().DataContainers.GetAll(nil)
 	if err != nil {
 		return nil, errors.WrapPrefix(err, "Failed to list Data Containers", 0)

src/ecfs/mounter.go

@@ -53,14 +53,7 @@ func getNfsExportEcfs(volId volumeHandleType) (nfsExport string, err error) {
 		return
 	}
 
-	var emsClient emanageClient
-	dc, export, err := emsClient.GetDcDefaultExportByVolumeId(volId)
-	if err != nil {
-		err = errors.WrapPrefix(err, fmt.Sprintf("Failed to get DC/export for Volume Id %s", volId), 0)
-		return
-	}
-
-	return fmt.Sprintf("%v:%v/%v", nfsAddr, dc.Name, export.Name), nil
+	return fmt.Sprintf("%v:%v/%v", nfsAddr, string(volId), volumeExportName), nil
 }
 
 func getNfsExportEfaas(volId volumeHandleType) (nfsExport string, err error) {

src/ecfs/volume.go

@@ -76,17 +76,6 @@ func createDc(emsClient *emanageClient, opt *volumeOptions) (*emanage.DataContai
 }
 
 func createExportForVolume(emsClient *emanageClient, volOptions *volumeOptions) (export emanage.Export, err error) {
-	found, export, err := exportExists(emsClient, volumeExportName, volOptions)
-	if err != nil {
-		err = errors.WrapPrefix(err, fmt.Sprintf("Failed to check if export %v exists on DC %v (%v)",
-			volumeExportName, volOptions.DataContainer.Id, volOptions.DataContainer.Name), 0)
-		return
-	}
-	if found {
-		glog.V(log.DEBUG).Infof("ecfs: Export %v for volume %v already exists - nothing to do", volumeExportName, volOptions.VolumeId)
-		return
-	}
-
 	exportOpt := &emanage.ExportCreateForVolumeOpts{
 		DcId:        int(volOptions.DataContainer.Id),
 		Path:        "/",