I'm using md devices. What I don't understand is how things with the raid are kept safe when write caching is enabled on the underlying devices. Forgetting filesystem integrity, if a write access hits one of the disks and the power goes out, won't the members of the array be inconsistent without the md layer knowing about it? For now I am running with write caching turned off. Also, some drives support write cache flushing and some do not. Does this make any difference to md? Thanks, -jkl - 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