i, j, reference.Erasure.Sets[i][j], format.Erasure.Sets[i][j], errInconsistentDisk)
			}
		}
	}

	// Make sure that the diskID is found in the set.
	for i := 0; i < len(tmpFormat.Erasure.Sets); i++ {
		for j := 0; j < len(tmpFormat.Erasure.Sets[i]); j++ {
			if this == tmpFormat.Erasure.Sets[i][j] {
				return nil
			}
		}
	}