On 8/7/07, Neil Brown <neilb@xxxxxxx> wrote: > On Tuesday August 7, saeed.bishara@xxxxxxxxx wrote: > > how can I create raid 5 array that preserves the contents of a given > > disk (part of the array)? > > I can do that in two steps, raid 5 on two disks then reshape it to be > > real raid5, but is there a direct way to do it? > > What do you mean by "real raid 5". Two disks are just as much an > array as 10. I meant by real raid 5 to raid 5 over 3 drives or above. > What do you mean by "direct". If I understand your requirements in one mdadm command > correctly, there are two obvious steps. > 1/ make the data appear in a raid5 > 2/ change the number of devices in the raid5. > > Are two steps too many? in this case I two options: 1. keep the filesystem unmounted tell step 1 in done -> the fs will not be available for long time 2. force umount before step 2. > > I guess I don't understand your question. > > 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
