# Re: \[PATCH 01/19\] btrfs: require at least 4 devices for RAID 6

- From: Christoph Hellwig \<hch@lst.de\>
- Date: 2026-05-15 04:38:01 
- List: linux-arm-kernel
- Page: https://ratatoskr.run/linux-arm-kernel/2026/05/9008331
- Thread: https://ratatoskr.run/linux-arm-kernel/2026/05/8997837/t.md

```text
On Thu, May 14, 2026 at 12:57:53PM -0700, H. Peter Anvin wrote:
> That's what I'm saying – it should invoke the RAID-1 code under the
> cover (as with 3 disks, D = P = Q.)

Yes, if the btrfs maintainer cared for this setup that is what should
be done.

```