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Date:   Mon, 16 Sep 2019 23:48:11 -0700
From:   Christoph Hellwig <hch@infradead.org>
To:     Daegyu Han <hdg9400@gmail.com>
Cc:     linux-fsdevel@vger.kernel.org
Subject: Re: Sharing ext4 on target storage to multiple initiators using
 NVMeoF
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You might want to look into the pnfs block layout instead to do this
safely.  It is supported with XFS out of the box, but adding ext4
support shouldn't be all that hard.