From: hch@lst.de (Christoph Hellwig)
Subject: [PATCH 3/6] nvme: claim block devices
Date: Tue, 3 Oct 2017 13:55:07 +0200 [thread overview]
Message-ID: <20171003115506.GC24650@lst.de> (raw)
In-Reply-To: <ece83015-0def-8e36-5645-7be00be95c40@suse.de>
On Tue, Oct 03, 2017@12:08:26PM +0200, Hannes Reinecke wrote:
> With this patch dm-multipath will ignore this device, so it's
> _impossible_ to setup any device-mapper or md device on top of the
> 'nvme' device.
> Without this patch md will happily autostart any RAID device on these
> devices when it find a signature.
> Or the user can mount it.
> Or swap can attach it as a swapspace.
>
> _AND_ you can do the same with the subsystem device, too, without any
> indication that anything is amiss.
>
> Do we really want this?
I though we agreed last week to do dynamic claiming.
That is if someone claims the multipath-device we extend that claim to
all /dev/nvmeXnY devices, and if someone claims one of the /dev/nvmeXnY
devices we extent it to the multipath node. That should solve all of
the above issues.
next prev parent reply other threads:[~2017-10-03 11:55 UTC|newest]
Thread overview: 42+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-10-02 13:55 [PATCH 0/6] nvme: sanitize multipathing Hannes Reinecke
2017-10-02 13:55 ` [PATCH 1/6] nvme: display 'CMIC' controller attribute Hannes Reinecke
2017-10-02 16:15 ` Christoph Hellwig
2017-10-02 13:55 ` [PATCH 2/6] nvme: use 'nvmsXnZ' instead of 'nvm-subXnZ' Hannes Reinecke
2017-10-02 16:16 ` Christoph Hellwig
2017-10-02 16:20 ` Keith Busch
2017-10-11 14:32 ` Guan Junxiong
2017-10-02 13:55 ` [PATCH 3/6] nvme: claim block devices Hannes Reinecke
2017-10-02 16:42 ` Christoph Hellwig
2017-10-03 10:08 ` Hannes Reinecke
2017-10-03 11:55 ` Christoph Hellwig [this message]
2017-10-04 5:42 ` Hannes Reinecke
2017-10-04 6:15 ` Christoph Hellwig
2017-10-04 6:33 ` Hannes Reinecke
2017-10-04 7:13 ` Christoph Hellwig
2017-10-04 7:26 ` Hannes Reinecke
2017-10-05 1:08 ` Martin K. Petersen
2017-10-05 6:51 ` Johannes Thumshirn
2017-10-05 14:05 ` Keith Busch
2017-10-05 14:39 ` Hannes Reinecke
2017-10-05 14:47 ` Christoph Hellwig
2017-10-02 13:55 ` [PATCH 4/6] nvme: display 'NMIC' namespace attribute Hannes Reinecke
2017-10-02 16:16 ` Christoph Hellwig
2017-10-03 10:00 ` Hannes Reinecke
2017-10-03 11:49 ` Christoph Hellwig
2017-10-03 16:01 ` Hannes Reinecke
2017-10-02 13:55 ` [PATCH 5/6] nvme: Export subsystems to /sys/class/nvme-subsys Hannes Reinecke
2017-10-02 16:18 ` Christoph Hellwig
2017-10-02 16:53 ` Keith Busch
2017-10-02 16:56 ` Christoph Hellwig
2017-10-02 17:15 ` Keith Busch
2017-10-02 13:55 ` [PATCH 6/6] nvme: ignore retries for multipath devices Hannes Reinecke
2017-10-02 16:22 ` Christoph Hellwig
2017-10-03 10:02 ` Hannes Reinecke
2017-10-03 11:53 ` Christoph Hellwig
2017-10-02 14:35 ` [PATCH] nvme: reset retires after path failover Johannes Thumshirn
2017-10-02 14:43 ` Keith Busch
2017-10-02 15:08 ` Hannes Reinecke
2017-10-02 14:45 ` Johannes Thumshirn
2017-10-02 16:25 ` Christoph Hellwig
2017-10-02 14:46 ` Johannes Thumshirn
2017-10-02 16:19 ` Christoph Hellwig
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