From mboxrd@z Thu Jan  1 00:00:00 1970
Return-Path: <msnitzer@redhat.com>
Date: Thu, 4 Jan 2018 19:07:44 -0500
From: Mike Snitzer <snitzer@redhat.com>
To: Keith Busch <keith.busch@intel.com>
Cc: Linux Block <linux-block@vger.kernel.org>,
	Linux NVMe <linux-nvme@lists.infradead.org>,
	Device Mapper <dm-devel@redhat.com>, Christoph Hellwig <hch@lst.de>,
	Jens Axboe <axboe@kernel.dk>,
	Bart VanAssche <bart.vanassche@wdc.com>,
	James Smart <james.smart@broadcom.com>,
	"Martin K . Petersen" <martin.petersen@oracle.com>,
	Hannes Reinecke <hare@suse.com>, Sagi Grimberg <sagi@grimberg.me>
Subject: Re: [PATCH 0/5] Failover criteria unification
Message-ID: <20180105000744.GG16051@redhat.com>
References: <20180104224623.8944-1-keith.busch@intel.com>
 <20180104233627.GA16051@redhat.com>
 <20180104234727.GA15654@localhost.localdomain>
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On Thu, Jan 04 2018 at  6:47pm -0500,
Keith Busch <keith.busch@intel.com> wrote:

> On Thu, Jan 04, 2018 at 06:36:27PM -0500, Mike Snitzer wrote:
> > Right, I dropped that patch since it'd have only resulted in conflicts
> > come merge time.  As such, this series can easily go through the nvme
> > tree to Jens.
> 
> It looks like you can also touch up dm to allow it to multipath nvme
> even if CONFIG_NVME_MULTIPATH is set. It may be useful since native NVMe
> doesn't multipath namespaces across subsystems, and some crack smoking
> people want to create something that requires that.

I had a "CONFIG_NVME_MULITIPATH=Y" typo in the dm-mpath.c commit that
added the CONFIG_NVME_MULTIPATH mutual exclussion in dm-4.16; so I
just dropped it via rebase.

So now the underlying nvme devices (already multipath'd by NVMe) should
be discoverable by multipathd.  Who am I to judge crack smokers?