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From: keith.busch@intel.com (Keith Busch)
Subject: 'modprobe nvme_core multipath=N' crashes in face of multipath fabric
Date: Wed, 11 Apr 2018 07:45:30 -0600	[thread overview]
Message-ID: <20180411134530.GC9238@localhost.localdomain> (raw)
In-Reply-To: <20180410204953.GA17979@redhat.com>

On Tue, Apr 10, 2018@04:49:53PM -0400, Mike Snitzer wrote:
> This isn't new since the 4.17 merge or anything, I first noticed this
> issue existed while using a 4.16-rc4 kernel.
> 
> modprobe nvme_core multipath=N

Thanks for the notice.

There is definitely a bug here when CONFIG_NVME_MULTIPATH=y but nvme_core
multipath is disabled in the presence of shared namespaces. I think we'd
need each namespace to get a different "head" out of the subsystem in
this case, but it may take a moment for me to detangle this.

  reply	other threads:[~2018-04-11 13:45 UTC|newest]

Thread overview: 7+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-04-10 20:49 'modprobe nvme_core multipath=N' crashes in face of multipath fabric Mike Snitzer
2018-04-11 13:45 ` Keith Busch [this message]
2018-04-11 14:17   ` Mike Snitzer
2018-04-11 17:58     ` Keith Busch
2018-04-11 21:46       ` Mike Snitzer
2018-04-12  8:12         ` Sagi Grimberg
2018-04-12 22:28           ` Keith Busch

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