> Am Sonntag, 17. September 2006 13:36 schrieben Sie: >> On 9/17/06, Ask Bjørn Hansen <ask@xxxxxxxxxxxxxx> wrote: >> > > It's recommended to use a script to scrub the raid device regularly, >> > > to detect sleeping bad blocks early. >> > >> > What's the best way to do that? dd the full md device to /dev/null? >> >> echo check >/sys/block/md?/md/sync_action >> >> Distros may have cron scripts to do this "right". >> >> And you need a fairly recent kernel. > > Does this test stress the discs a lot, like a resync? > How long does it take? > Can I use it on a mounted array? > I'd like to add to this question -- does 'check' action on a RAID5 array verify the accuracy of parity data, blindly read back all data, or only verify readability of data blocks? - 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
