# Re: Linear device of two arrays

- From: Nix \<hidden\>
- Date: 2017-07-07 11:07:35 
- List: linux-raid
- Page: https://ratatoskr.run/linux-raid/2017/07/6636040
- Thread: https://ratatoskr.run/linux-raid/2017/07/6636040/t.md

```text
On 5 Jul 2017, Wols Lists spake thusly:
> My feeling was, if you can't just add drives to the existing raid 10,
> create a new one which you can expand, migrate the fs across (btrfs
> would let you do that live, I believe, so xfs probably can too), then
> you can scrap the old raid-10 and add the drives into the new one.

In extremis you can always connect multiple block devices into one, or
indeed multiple *pieces* of them into one, using dmsetup with the linear
table. (However, this is not persistent, so you'd need to script redoing
it on every boot.)

-- 
NULL && (void)
```