On 1 October 2013 21:42, Mark Keisler <mark@xxxxxxxxxxx> wrote: > Is scrub (sync) needed on RAID10? I've noticed in mdadm monitor logs that > it seems to re-allocate data destined for bad blocks on the fly anyway. > Maybe I don't quite understand what the scrub does, though :) > I ran it for the first time on my RAID last night anyway to make sure all > way well since I am failing out a dying disk for replacement today. > -- > Mark Keisler > "I have been here. Now I am going there. Where? ... No, I won't have it!" > -- > 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 "Scrubbing" (or verifying the array consistency) is not /required/ on any array, but it's recommended, if you care about your data. So yeah, why not? For a RAID10 I suppose it just checks that the copies in the 2 sub arrays are identical. Another thing to do in addition to scrubbing would be extended SMART self-tests (smartctl -t long). Mathias -- 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
