Re: [Qemu-devel] [PATCH v2 0/3] Introduce vhost-user-scsi and sample application

["Michael S. Tsirkin" <mst@redhat.com>]

On Thu, Nov 10, 2016 at 05:49:16AM -0800, Felipe Franciosi wrote:
> Based on various discussions on the 2016 KVM Forum, I'm sending over a
> vhost-user-scsi implementation for your consideration.
> 
> This patch set introduces a new vhost-user SCSI device. While heavily
> based on vhost-scsi, it is implemented using vhost's userspace
> counterpart. The device has been coded and tested to work with live
> migration.
> 
> As part of this work, a new vhost-scsi-common device was created and
> the existing vhost-scsi device moved underneath it. The new
> vhost-user-scsi device is also placed underneath it.
> 
> A sample application based on the newly introduced libvhost-user is
> also included. It makes use of libiscsi for simplicity.
> 
> For convenience, I'm maintaining an up-to-date version of these
> patches (including some necessary fixes for libvhost-user and vhost
> core code still under discussion) on:
> 
> https://github.com/franciozzy/qemu/tree/vus-upstream
> 
> See the individual patches for build and use instructions.
> 
> Signed-off-by: Felipe Franciosi <felipe@nutanix.com>

Thanks!

I'll review after we put out the release, pls remember
to ping then.

I would like to get some feedback from storage maintainers
on whether they see issues with supporting this.

> v1 -> v2:
>  - Introduce new vhost-scsi-common device type.
>  - Move vhost-scsi device underneath vhost-scsi-common.
>  - Move sample application from tests/ to contrib/.
>  - Make sample application use the glib event loop.
>  - Minor fixes.
> 
> Felipe Franciosi (3):
>   vhost-scsi: create a vhost-scsi-common abstraction
>   vus: Introduce vhost-user-scsi host device
>   vus: Introduce a vhost-user-scsi sample application
> 
>  Makefile                                  |   4 +
>  Makefile.objs                             |   4 +
>  configure                                 |  11 +
>  contrib/vhost-user-scsi/Makefile.objs     |   1 +
>  contrib/vhost-user-scsi/vhost-user-scsi.c | 886 ++++++++++++++++++++++++++++++
>  hw/scsi/Makefile.objs                     |   3 +-
>  hw/scsi/vhost-scsi-common.c               | 143 +++++
>  hw/scsi/vhost-scsi.c                      | 188 ++-----
>  hw/scsi/vhost-user-scsi.c                 | 198 +++++++
>  hw/virtio/virtio-pci.c                    |  58 ++
>  hw/virtio/virtio-pci.h                    |  15 +
>  include/hw/virtio/vhost-scsi-common.h     |  48 ++
>  include/hw/virtio/vhost-scsi.h            |  11 +-
>  include/hw/virtio/vhost-user-scsi.h       |  34 ++
>  include/hw/virtio/virtio-scsi.h           |   7 +
>  15 files changed, 1466 insertions(+), 145 deletions(-)
>  create mode 100644 contrib/vhost-user-scsi/Makefile.objs
>  create mode 100644 contrib/vhost-user-scsi/vhost-user-scsi.c
>  create mode 100644 hw/scsi/vhost-scsi-common.c
>  create mode 100644 hw/scsi/vhost-user-scsi.c
>  create mode 100644 include/hw/virtio/vhost-scsi-common.h
>  create mode 100644 include/hw/virtio/vhost-user-scsi.h
> 
> -- 
> 1.9.4