Re: [Qemu-devel] [PATCH v5 0/4] Introduce vhost-user-scsi and sample application

[Harris, James R]

> On Jul 6, 2017, at 10:11 AM, Marc-André Lureau <address@hidden> wrote:
> 
> Hi
> 
> ----- Original Message -----
>> 
>>> On Jul 6, 2017, at 9:56 AM, Paolo Bonzini <address@hidden> wrote:
>>> 
>>> 
>>> 
>>> On 06/07/2017 18:54, Harris, James R wrote:
>>>> Hi Michael,
>>>> 
>>>> Yes - we (SPDK team at Intel) have this on our TODO list, in addition
>>>> to a polled mode virtio-scsi driver (akin to the DPDK virtio-net driver
>>>> that
>>>> can be used in the guest).
>>> 
>>> Can you also look at virtio-blk poll-mode drivers and vhost-user-blk
>>> (vhost-user-blk would be really easy to write, the sample server being
>>> much more work than the QEMU code)?
>>> 
>>> Paolo
>> 
>> Hi Paolo,
>> 
>> vhost-user-blk:
>> 
>> We have an initial implementation in our SPDK QEMU repo.  Changpeng Liu
>> (added)
>> will be sending this to the QEMU mailing list shortly.  If you are interested
>> in viewing it
>> before it hits the mailing list, you can take a look at the patch here:
>> 
>> https://github.com/spdk/qemu/commit/db2fcb0f5002c3d195e756eab07bd976ccf6e7c8
> 
> Great! I also just started looking into this, I'll take a look at your 
> implementation. Do you also have a "server"/slave side, or plan to share one?

We will add a sample server that can be upstreamed into QEMU, and will also 
provide a morefully-functional vhost-user-blk
target with SPDK.

A lot of the SPDK vhost-user-blk work has been pushed out to our master branch 
already, but there’s still some WIP.

https://github.com/spdk/spdk/tree/master/lib/vhost

-Jim