On Thursday August 9, davidsen@xxxxxxx wrote: > I have an array on two drives which was set up as a RAID-0, because I > needed the space and performance. Now I have another identical drive, > ideally I would like to get to RAID-5, but I don't think that is going > to fly, so how about RAID-4? I could create with a missing parity drive, > then add the drive and see if it will rebuild. > > I hope to test this using loop devices, but time is fairly short right now. Providing the two drives are exactly the same size (which rounded down to a multiple of 64K), this will work. The parity drive is the last in the list so mdadm -C /dev/mdX -l4 -n3 -c WHATEVER /dev/sda1 /dev/sdb1 missing is the sort of thing you want. NeilBrown - 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
