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Date: Fri, 17 Aug 2018 00:35:06 -0700
From: Christoph Hellwig <hch@infradead.org>
To: Changwei Ge <gechangwei@live.cn>
Cc: "dm-devel@redhat.com" <dm-devel@redhat.com>,
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Subject: Re: [RFC] Can DM pass SCSI command to path now?
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On Thu, Aug 16, 2018 at 11:56:48AM +0000, Changwei Ge wrote:
> Hi list,
> 
> Recently, I found that block request can't take SCSI CDB any more.
> 
> So, can we still pass SCSI command to DM device which will clone the 
> request and transfer it real path?

You never could before, as the infrastructure was always missing.