There is a nasty bug in md in 2.6.18 affecting at least raid1. This fixes it (and has already been sent to stable@xxxxxxxxxx). ### Comments for Changeset This fixes a bug introduced in 2.6.18. If a drive is added to a raid1 using older tools (mdadm-1.x or raidtools) then it will be included in the array without any resync happening. It has been submitted for 2.6.18.1. Signed-off-by: Neil Brown <neilb@xxxxxxx> ### Diffstat output ./drivers/md/md.c | 1 + 1 file changed, 1 insertion(+) diff .prev/drivers/md/md.c ./drivers/md/md.c --- .prev/drivers/md/md.c 2006-09-29 11:51:39.000000000 +1000 +++ ./drivers/md/md.c 2006-10-05 16:40:51.000000000 +1000 @@ -3849,6 +3849,7 @@ static int hot_add_disk(mddev_t * mddev, } clear_bit(In_sync, &rdev->flags); rdev->desc_nr = -1; + rdev->saved_raid_disk = -1; err = bind_rdev_to_array(rdev, mddev); if (err) goto abort_export; - 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
