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Date: Fri, 11 Jan 2019 13:46:04 +0800
From: Yang Zhong <yang.zhong@intel.com>
Message-ID: <20190111054604.GA1038@yangzhon-Virtual>
References: <20190110083753.GA31730@yangzhon-Virtual>
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Subject: Re: [Qemu-devel] If Qemu support NVMe over Fabrics ?y
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To: Stefan Hajnoczi <stefanha@gmail.com>
Cc: QEMU Developers <qemu-devel@nongnu.org>, fam@euphon.net, pbonzini@redhat.com, keith.busch@intel.com, Yang Zhong <yang.zhong@intel.com>

On Thu, Jan 10, 2019 at 10:36:37AM +0000, Stefan Hajnoczi wrote:
> On Thu, Jan 10, 2019 at 04:37:53PM +0800, Yang Zhong wrote:
> > Do you know if Qemu support NVMe over Fabrics(NVMe-oF)?
> > https://nvmexpress.org/wp-content/uploads/NVMe_Over_Fabrics.pdf
> > 
> > The Qemu has enabled RDMA in last year, and i am not sure if Qemu 
> > should support NVME-oF. If Qemu support it, would you please share
> > me the qemu related command or guides? thanks a lot!
> 
> QEMU supports many different storage configurations.  Can you be more
> specific?
> 
> For example, if your host has NVMe-oF set up then you can give the NVMe
> block devices to QEMU just like any other host block device (-drive
> file=/dev/sdc,...).
> 
> But maybe you are thinking about other configurations, like exposing
> NVMe-oF to the guest?
> 
  Thanks Stefan's comments. We only want Qemu as NVMe-oF initiator to
  access remote target's resource.

  I checked the block/nvme.c and hw/block/nvme.c code, which seems do
  not support NVMe-oF . If i am wrong please correct me.

  If Qemu support NVMe-oF initiator, please share me how to use it. 
  If Qemu does not support it, please tell me if community has plan 
  to implement it. thanks a lot!
 
  Regards,

  Yang
 
> Stefan