debug sporadic test error on travis

weed/storage/disk_location_ec_test.go

@@ -1,7 +1,10 @@
 package storage
 
 import (
+	"io/ioutil"
 	"testing"
+
+	"github.com/chrislusf/seaweedfs/weed/glog"
 )
 
 func TestLoadingEcShards(t *testing.T) {
@@ -14,4 +17,15 @@ func TestLoadingEcShards(t *testing.T) {
 	if len(dl.ecVolumes) != 1 {
 		t.Errorf("loading err")
 	}
+
+	fileInfos, err := ioutil.ReadDir(dl.Directory)
+	if err != nil {
+		t.Errorf("listing all ec shards in dir %s: %v", dl.Directory, err)
+	}
+
+	glog.V(0).Infof("FileCount %d", len(fileInfos))
+	for i, fileInfo := range fileInfos {
+		glog.V(0).Infof("file:%d %s size:%d", i, fileInfo.Name(), fileInfo.Size())
+	}
+
 }