On Jan 20, 2014, at 9:08 AM, George Mitchell <geo...@chinilu.com> wrote:
> After reading the recent posts on this topic I am beginning to think there is > some real confusion between "check sums" and "parity". Yes, I often see conventional raid6 assumed to always be capable of detecting and correcting corruption, not merely the ability to rebuild missing data of known location and length in a stripe (known either due to the drive reporting read error along with LBA; or a physical device becoming unavailable or unresponsive). > But I CAN see how bad RAM could affect parity calculations and resulting data > IN THE ABSENCE of protective checksums and cannot help but wonder if THAT is > what the original article is describing. Does Btrfs (and I'd presume ZFS) raid5/6 checksum both data and parity chunks? And in the case of raid6 are the two parities separately checksummed? Chris Murphy -- To unsubscribe from this list: send the line "unsubscribe linux-btrfs" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
