linux-kernel - Re: about NPIV with qemu-kvm.

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Message-ID: <4EA79A0E.8030604@suse.de>
Date:	Wed, 26 Oct 2011 07:26:38 +0200
From:	Hannes Reinecke <hare@...e.de>
To:	ya su <suya94335@...il.com>
Cc:	Christoph Hellwig <hch@...radead.org>,
	Stefan Hajnoczi <stefanha@...il.com>,
	Paolo Bonzini <pbonzini@...hat.com>,
	Christoph Hellwig <chellwig@...hat.com>,
	Stefan Hajnoczi <stefanha@...ux.vnet.ibm.com>,
	kvm@...r.kernel.org, "Michael S. Tsirkin" <mst@...hat.com>,
	qemu-devel <qemu-devel@...gnu.org>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	Linux Virtualization <virtualization@...ts.linux-foundation.org>,
	"Nicholas A. Bellinger" <nab@...ux-iscsi.org>
Subject: Re: about NPIV with qemu-kvm.

On 10/26/2011 06:40 AM, ya su wrote:
> hi, hannes:
> 
>     I want to use NPIV with qemu-kvm, I issued the following command:
> 
>     echo '1111222233334444:5555666677778888' >
> /sys/class/fc_host/host0/vport_create
> 
>     and it will produce a new host6 and one vport succesfully, but it
> does not create any virtual hba pci device. so I don't know how to
> assign the virtual host to qemu-kvm.
> 
Well, you can't. There is no mechanism for. When using NPIV you need
to pass in the individual LUNs via eg virtio-blk.

>     from your this mail, does array will first need to assign a lun to
> this vport? and through this new created disk, like device /dev/sdf,
> then I add qemu-kvm with -drive file=/dev/sdf,if=virtio... arguments?
> 
Yes. That's what you need to do.

Cheers,

Hannes
-- 
Dr. Hannes Reinecke              zSeries & Storage
hare@...e.de                  +49 911 74053 688
SUSE LINUX Products GmbH, Maxfeldstr. 5, 90409 Nürnberg
GF: Markus Rex, HRB 16746 (AG Nürnberg)
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