Been mulling this problem over and I keep getting hung up on one problem with ECC on a two disk RAID1 setup. In the event of silent corruption of one disk, which one is the good copy? It works fine if the ECC code is identical across both mirrors. Just checksum both chunks and discard the incorrect one. It also works fine if the ECC codes are corrupted but the data chunks are identical. Discard the bad checksum. What if the corruption goes across several sectors and both data & ECC chuncks are corrupted? Now you're back to square one. -- Drew "Nothing in life is to be feared. It is only to be understood." --Marie Curie -- To unsubscribe from this list: send the line "unsubscribe linux-raid" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
