if !stsAccountFound {
		pols, _ := cache.iamUserPolicyMap.Load(accessKey)
		for _, policy := range pols.toSlice() {
			if _, found = cache.iamPolicyDocsMap[policy]; !found {
				store.loadPolicyDocWithRetry(ctx, policy, cache.iamPolicyDocsMap, 3)
			}
		}
	} else {
		pols, _ := cache.iamSTSPolicyMap.Load(stsUserCred.Credentials.AccessKey)
		for _, policy := range pols.toSlice() {

	}

	var volInfos []VolInfo
	// TestXLStorage empty list vols.
	if volInfos, err = xlStorage.ListVols(context.Background()); err != nil {
		t.Fatalf("expected: <nil>, got: %s", err)
	} else if len(volInfos) != 1 {
		t.Fatalf("expected: one entry, got: %s", volInfos)
	}

	// TestXLStorage non-empty list vols.
	if err = xlStorage.MakeVol(context.Background(), "success-vol"); err != nil {