On 27/04/15 16:37, Jean-Baptiste Thomas wrote:
I'm looking for a way to get MD to operate in a mode in which reading a sector from a RAID-1 device would not succeed until it got matching data from at least two components. Recent experience[1] suggests that a transient problem in one disk can completely hose a four way RAID-1 array, which is otherwise supposed to still be fine after a triple total failure. I'm hoping that a paranoid mode would have prevented that.
There isn't any such thing that I am aware of in Linux MD RAID. However, I've heard that if you want data integrity, then you could use zfs, which supports RAID as well as data checksums to ensure that the data read back matches the data you wrote....
Personally, I've never used zfs, and there might be other FS's that will have the feature as well (eg, btrfs etc).
Hope that helps... Regards, Adam -- Adam Goryachev Website Managers www.websitemanagers.com.au -- 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
