On Wed, 2004-09-22 at 15:00, dr_snafu wrote:
> hello,
>
> i have a disk with data on it /dev/hdc,
> and a brand new empty disk /dev/hdb.
Partitions not in use?
> want to set up raid 1 without moving data off hdc.
> it very large and i have no where to put it
>
> will this work?: (notice # of devices)
>
> mdadm --create --verbose /dev/md0 --level=1
> --raid-devices=1 /dev/hdb
Again, no partitions? You can do that, don't get me wrong, but things
like raidautodetect work a bit more smoothly if you actually have a
partition table.
> will this create an unmirrored raid 1 setup?
> can i start and mount md0?
> then copy the data from hdb to md0?
>
> then?:
>
> mdadm /dev/md0 --add /dev/hdc
>
>
> seems too good to be true,
> maybe you know another way?
Use e2fsresize or whatever it's called to shrink the size of the e2fs on
/dev/hdc by 64k, then mdadm -C /dev/md0 -l raid1 -n 2 /dev/hdc failed,
then mdadm /dev/md0 -a /dev/hdb and all the data will then be synced
from hdc to hdb and when it's done the raid array will be up, running,
and fully operational.
--
Doug Ledford <dledford@xxxxxxxxxx> 919-754-3700 x44233
Red Hat, Inc.
1801 Varsity Dr.
Raleigh, NC 27606
-
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
