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Date: Thu, 8 Dec 2016 14:35:59 +0100
From: David Sterba <dsterba@suse.cz>
To: Liu Bo <bo.li.liu@oracle.com>
Cc: linux-btrfs@vger.kernel.org, Chris Mason <clm@fb.com>,
        Jan Kara <jack@suse.cz>
Subject: Re: [PATCH 2/6] Btrfs: set single device limit for dax usecase
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On Wed, Dec 07, 2016 at 01:45:06PM -0800, Liu Bo wrote:
> Dax on btrfs is not ready for multiple device.

How about DUP? Technically it's not multi-device but still stores
multiple copies, so I don't know if the implementation is ok with that.