t.Fatal(err)
	}
	left, err := v.UnmarshalMsg(bts)
	if err != nil {
		t.Fatal(err)
	}
	if len(left) > 0 {
		t.Errorf("%d bytes left over after UnmarshalMsg(): %q", len(left), left)
	}

	left, err = msgp.Skip(bts)
	if err != nil {
		t.Fatal(err)
	}
	if len(left) > 0 {
		t.Errorf("%d bytes left over after Skip(): %q", len(left), left)
	}
}

func BenchmarkMarshalMsgWalkDirOptions(b *testing.B) {

		t.Fatal(err)
	}
	left, err := v.UnmarshalMsg(bts)
	if err != nil {
		t.Fatal(err)
	}
	if len(left) > 0 {
		t.Errorf("%d bytes left over after UnmarshalMsg(): %q", len(left), left)
	}

	left, err = msgp.Skip(bts)
	if err != nil {
		t.Fatal(err)
	}
	if len(left) > 0 {
		t.Errorf("%d bytes left over after Skip(): %q", len(left), left)
	}
}

func BenchmarkMarshalMsgSiteResyncStatus(b *testing.B) {

		t.Fatal(err)
	}
	left, err := v.UnmarshalMsg(bts)
	if err != nil {
		t.Fatal(err)
	}
	if len(left) > 0 {
		t.Errorf("%d bytes left over after UnmarshalMsg(): %q", len(left), left)
	}

	left, err = msgp.Skip(bts)
	if err != nil {
		t.Fatal(err)
	}
	if len(left) > 0 {
		t.Errorf("%d bytes left over after Skip(): %q", len(left), left)
	}
}

func BenchmarkMarshalMsgTierConfigMgr(b *testing.B) {

	return db.callbacks
}

// AddError add error to db
func (db *DB) AddError(err error) error {
	if err != nil {
		if db.Config.TranslateError {
			if errTranslator, ok := db.Dialector.(ErrorTranslator); ok {
				err = errTranslator.Translate(err)
			}
		}

		if db.Error == nil {
			db.Error = err
		} else {
			db.Error = fmt.Errorf("%v; %w", db.Error, err)
		}
	}
	return db.Error
}

	if len(expected) != len(actual) {
		t.Errorf("expected %d indices, but got %d", len(expected), len(actual))
		return
	}

	for i, ei := range expected {
		t.Run(ei.Name, func(t *testing.T) {
			ai := actual[i]
			tests.AssertObjEqual(t, ai, ei, "Name", "Class", "Type", "Where", "Comment", "Option")

			if len(ei.Fields) != len(ai.Fields) {

	if info.Free > info.Total {
		return info, fmt.Errorf("detected free space (%d) > total drive space (%d), fs corruption at (%s). please run 'fsck'", info.Free, info.Total, path)
	}
	info.Used = info.Total - info.Free
	return info, nil
}

// GetDriveStats returns IO stats of the drive by its major:minor
func GetDriveStats(major, minor uint32) (iostats IOStats, err error) {
	return IOStats{}, errors.New("operation unsupported")

	if info.Free > info.Total {
		return info, fmt.Errorf("detected free space (%d) > total drive space (%d), fs corruption at (%s). please run 'fsck'", info.Free, info.Total, path)
	}
	info.Used = info.Total - info.Free
	return info, nil
}

// GetDriveStats returns IO stats of the drive by its major:minor
func GetDriveStats(major, minor uint32) (iostats IOStats, err error) {
	return IOStats{}, errors.New("operation unsupported")

				}
				err = rec.WriteCSV(&gotB, opts)
				if err != nil {
					t.Error(err)
				}
				err = want.WriteCSV(&wantB, opts)
				if err != nil {
					t.Error(err)
				}

				if !bytes.Equal(gotB.Bytes(), wantB.Bytes()) {
					t.Errorf("CSV output mismatch.\nwant: %s(%x)\ngot:  %s(%x)", wantB.String(), wantB.Bytes(), gotB.String(), gotB.Bytes())
				}
				gotB.Reset()
				wantB.Reset()

-----------------
failure for all cases.

// Pseudo code for managing `format.json`.

// Generic checks.
if (no quorum) return error
if (any disk is corrupt) return error // Always error
if (jbod inconsistent) return error // Always error.
if (disks not recognized) // Always error.

// Specific checks.
if (all disks online)
  if (all disks return format.json)
     if (jbod consistent)

				if err == nil {
					t.Fatalf("Expected error for %s, got none", tt.name)
				}
				return
			}
			if err != nil {
				t.Fatalf("GetContentChecksum failed for %s: %v", tt.name, err)
			}

			if gotChksm == nil {
				t.Fatalf("Got nil checksum for %s", tt.name)
			}
			// Compare the full checksum structs
			if !chksm.Equal(gotChksm) {